To see the other types of publications on this topic, follow the link: Sewage sludge management.
Journal articles on the topic 'Sewage sludge management'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Sewage sludge management.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Turlej, Tymoteusz, and Marian Banaś. "Sustainable management of sewage sludge." E3S Web of Conferences 49 (2018): 00120. http://dx.doi.org/10.1051/e3sconf/20184900120.
Full textAbstract:
The structure of municipal sewage sludge management in Poland, along with the change in legal regulations, has changed radically. The management of sewage sludge is of key importance for environmental pollution and limiting the negative impact on human health. This article presents current legal policies in Poland, methods of commonly used sewage sludge management in European countries, discusses the selection of an appropriate method for the disposal of municipal sewage sludge and an analysis of the current state of sewage sludge management in Poland. In addition, the difficulties associated with the adaptation of sewage sludge management for the requirements of sustainable development are discussed. The article contains foundations, challenges and concerns related to the thermal transformation of municipal sediments. Also forecast and directions of activities in sewage sludge management in Poland are presented.
2
Aira, Manuel, Ana Gómez-Roel, and Jorge Domínguez. "Earthworms Significantly Alter the Composition, Diversity, Abundance and Pathogen Load of Fungal Communities in Sewage Sludge from Different Urban Wastewater Treatment Plants." Pathogens 14, no. 5 (2025): 409. https://doi.org/10.3390/pathogens14050409.
Full textAbstract:
Management of sewage sludge is of ongoing concern because this waste product is generated continuously and contains high levels of harmful constituents. Among these constituents, fungal pathogens are of increasing concern. Vermicomposting can reduce the amounts of bacterial pathogens in sewage sludge; however, information about the effects of earthworms on fungal pathogens is limited or non-existent. We therefore aimed to determine whether vermicomposting can control fungal pathogens present in sewage sludge. Using next-generation sequencing techniques, we characterized fungal communities in sewage sludge from eight wastewater treatment plants (WWTPs) and in casts (feces) of earthworms feeding on sewage sludge. Fungal communities in earthworm casts primarily included taxa that were absent from sewage sludges, indicating a significant change in fungal composition. Changes in fungal diversity depended on the source of sewage sludge (WWTP). All of the sewage sludges contained low levels of fungal pathogens, most of which were significantly reduced or eliminated by earthworms, such as Armillaria, Cystobasidium, Exophiala and Ophiosthoma. Moreover, earthworm gut transit enhanced beneficial (saprotrophic) fungi like Arthrobotrys, Aseroe, Crepidotus and Trichurus. Overall, digestion of sewage sludge by earthworms alone generated a mainly pathogen-free fungal community with a high proportion of saprotrophic taxa, which would enhance nutrient cycling rates.
3
Przydatek, Grzegorz, and Aldona Katarzyna Wota. "Analysis of the comprehensive management of sewage sludge in Poland." Journal of Material Cycles and Waste Management 22, no. 1 (2019): 80–88. http://dx.doi.org/10.1007/s10163-019-00937-y.
Full textAbstract:
Abstract The methods of sewage sludge management in Poland have largely been determined by the legal requirements related to the Poland’s membership in the European Union. Since 1st January 2016, sewage sludge landfilling is prohibited. It must be emphasised that legal changes regarding wastewater management, along with the systematic increase in the volume of produced sludge, entail the necessity to change the existing method of sewage sludge management. This paper contains an analysis of solutions for management of sewage sludge produced in Poland over the period of 8 years. The goal of the work was an assessment of comprehensive management of sewage sludge produced in Poland from 2009 to 2016. Despite the decrease in the agricultural use of sewage sludge, their average share of 32% was the highest among other forms of sewage sludge management in Poland. Another form, related with the final stage of sewage sludge management, concerned its thermal processing. It was treated as a promising method, with a 19% increase over the analysed period. An optimal solution should be found to ensure safe management of sewage sludge.
4
Królik, Dariusz, Przemysław Wypych, and Jakub Kostecki. "Sewage Sludge Management in a Sewage Treatment Plant." Civil and Environmental Engineering Reports 29, no. 3 (2019): 209–17. http://dx.doi.org/10.2478/ceer-2019-0036.
Full textAbstract:
Abstract Sewage sludge produced in municipal sewage treatment plants, because of its physicochemical and sanitary properties, is a serious threat to the environment. In order to neutralize it, various methods of processing are used, which directly affect the quantity and quality of produced sewage sludge, which in the final stage can be used naturally. Properly managed sludge management is presented on the example of a sewage treatment plant, conducting the methane fermentation process with the production of biogas.
5
Stürmer, Bernhard, and Melanie Waltner. "Best Available Technology for P-Recycling from Sewage Sludge—An Overview of Sewage Sludge Composting in Austria." Recycling 6, no. 4 (2021): 82. http://dx.doi.org/10.3390/recycling6040082.
Full textAbstract:
In order to close the phosphorus cycle in the long term, efficient recycling processes are necessary to ensure that this critical nutrient can be returned to arable land. Sewage sludge recycling is of particular importance due to the relatively high phosphorus content of sewage sludge. In this article, the current recycling paths of Austrian sewage sludge are highlighted, focusing on the advantages and limitations of sewage sludge composting. In addition to nutrient contents, pollutant loads were also analyzed in order to also discuss the limitations of this recycling pathway. Therefore, data from Austrian composting plants with focus on sewage sludge are used. The results show that the currently relevant pollutants (heavy metals) are predominantly below the limits prescribed for recycling and spreading on arable land. However, in order to decide on a recycling path at an early stage, a pollutant monitoring system must be in place. Due to pollution, mono-incineration with subsequent phosphorus recovery is also currently being discussed in Austria. Mono-incineration can represent an important component of sewage sludge disposal, because some sewage sludges are not suitable for composting due to potential environmental hazards. Therefore, it is important that evidence-based limit values and measures for the reduction in pollutants for input sources are determined.
6
Rosiek, Ksymena. "Directions and Challenges in the Management of Municipal Sewage Sludge in Poland in the Context of the Circular Economy." Sustainability 12, no. 9 (2020): 3686. http://dx.doi.org/10.3390/su12093686.
Full textAbstract:
Landfilling was the main method of sewage sludge disposal in Poland for decades. After Poland’s accession to the European Union (EU), many investments have been made into providing better access to tap water as well as to collect and treat municipal sewage. However, sewage sludge treatment has not been treated as an integral part of the implementation of wastewater management obligations. Stricter European Union regulations regarding the management of municipal sewage sludge (MSS) pose new challenges for Poland. The aim of this study was to analyze changes in the direction of the final management of municipal sewage sludge in Poland based on the analysis of strategic documents, regulations, literature, and available statistical data. The aim of the analysis was to search for directions to modify how sewage sludge is managed, given the approach promoted by the circular economy concept. The results prove that investments in wastewater treatment plants according to the EU sewage directive are not applied to the development of infrastructure that would enable the disposal of sewage sludge, which, for many years, has been stored (landfilling) or used directly in agriculture and ground reclamation. The introduction of stricter regulations in the area of sewage sludge usage and better wastewater treatment have increased the level of difficulties concerning sewage sludge management. Poland faces the challenge of defining sewage sludge management directions. The circular economy concept offers an approach that can be the basis for the creation of a new sewage sludge management strategy for Poland. The concept allows the combined goals of sewage sludge disposal and of energy and nutrients recovery to be achieved.
7
Campbell, H. W., and T. R. Bridle. "Sludge management by thermal conversion to fuels." Canadian Journal of Civil Engineering 13, no. 5 (1986): 569–74. http://dx.doi.org/10.1139/l86-083.
Full textAbstract:
The philosophy of sludge management in the sewage treatment industry must respond to changes in processing costs and environmental requirements. As overall costs increase, the efficiency of sludge management must be increased either by ugrading the existing scheme or introducing new technology. Both of these approaches are discussed briefly in the paper and it is pointed out that low-temperature conversion of sludge to fuel appears to have considerable potential as a viable new technology.Experimental work carried out at Environment Canada's Wastewater Technology Centre used batch and continuous reactors to evaluate this technology at bench scale. Tests on a number of mixed raw sludges (primary + waste activated) resulted in the following yields: oil, 22–25%, char, 50–60%, noncondensable gas, 10–12%, and reaction water, 5–12%.The impact of a number of sludge treatment alternatives, including the conversion of sludge to oil, are discussed with respect to energy efficiency, flexibility, and public acceptance. The future plans of Environment Canada for the development and demonstration of sludge-to-oil technology are also discussed. Key words: sewage sludge, thermal conversion, energy recovery, sludge management, oil, fuel, char.
8
Tsybina, Anna, Christoph Wünsch, Irina Glushankova, and Anna Arduanova. "Development and Substantiation of Approaches to the Management of Sewage Sludge of Different Storage Periods." Energies 16, no. 15 (2023): 5698. http://dx.doi.org/10.3390/en16155698.
Full textAbstract:
A widespread method of sewage sludge disposal is still simple storage in sludge lagoons. Subsequent thermal utilization is hardly possible because sludge properties change over time and energy content is reduced. Use as a soil conditioner in agriculture or landscaping is usually not possible due to high heavy metal contents. This paper describes a method in which a 10-year-old accumulated sewage sludge can be utilized as technical soil by mixing it with pyrolized fresh sewage sludge. For this purpose, physicochemical and toxicological characteristics of sewage sludge of different storage periods were identified, processes of thermal destruction of sewage sludge analyzed, toxicological characteristics of solid products of thermal sludge treatment determined, and the possibility of using the sewage sludge–pyrolysate mixture as technical soil was assessed. Results show that the gross calorific value of fresh and one-year stored sewage sludge is with approx. 15,000 kJ/kg dry basis sufficient to produce pyrolysate autothermally. It is also shown that when the pyrolysis residue is mixed with fresh or 1-year old sewage sludge, heavy metals can be immobilized and thus the leaching of heavy metals significantly reduced by up to 75%. The method described can thus be a possible option for recycling accumulated sewage sludge.
9
Kowalski, Zygmunt, Agnieszka Makara, Joanna Kulczycka, et al. "Conversion of Sewage Sludge into Biofuels via Different Pathways and Their Use in Agriculture: A Comprehensive Review." Energies 17, no. 6 (2024): 1383. http://dx.doi.org/10.3390/en17061383.
Full textAbstract:
The valorisation of sewage sludge for sustainable agricultural use and biofuel production proposes an effective and beneficial management of sewage sludge in a closed-loop cycle. The management of sewage sludge biowaste is a rising problem due to increasing waste storage expenses. In this sense, the use of circular economy principles in sewage sludge management creates opportunities to develop new technologies for processing. The biorefinery model allows the application of wasteless technologies via sewage sludge valorisation in terms of agricultural use and biofuel production, especially with the hydrothermal carbonisation method. Applying hydrothermal carbonisation in the treatment of biosolid sewage sludge has numerous benefits due to processing highly hydrated organic waste into carbon hydro char, a high-quality solid biofuel. The direct use of sewage sludge in the soil does not allow for full use of its functional properties. However, the hydrothermal carbonisation of sewage sludge results in biocarbon pellets, making it a viable approach. This work also discusses the barriers (legal, chemical, biological, and technical) and possibilities related to sewage sludge biorefining processes.
10
Dokulilová, Tereza, Tomáš Vítěz, Jan Chovanec, Robert Rouš, Monika Vítězová, and Ivan Kushkevych. "Primary and Activated Sludge Biogas Production: Effect of Temperature." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 66, no. 1 (2018): 23–28. http://dx.doi.org/10.11118/actaun201866010023.
Full textAbstract:
Sewage sludge management is a problem of growing importance. Anaerobic sewage sludge stabilization is commonly used technology, where organic matter contained in primary and activated sewage sludge is converted into biogas, so both, pollution control and energy recovery can be achieved. The paper deals with the effect of process temperature (36 °C, 42 °C and 50 °C) on biogas production and quality during anaerobic stabilization of primary and activated sewage sludge generated during purifying process in low‑loaded activated sludge process. Primary and activated sewage sludge samples were taken at the wastewater treatment plant Brno, Czech Republic. The characteristics of sludges (dry matter and organic dry matter content, pH, conductivity, redox potential) were dermined. Biogas production and quality was measured using 3 anaerobic systems, each of 8 batch anaerobic fermenters, at the 3 different temperature conditions 36 °C, 42 °C and 50 °C. Hydraulic retention time was 20 days. Hypothesis, which predicts that the fermentation of primary and activated sludge provides dissimilar methane quantity and quality under different temperature conditions (36 °C, 42 °C and 50 °C), was partially confirmed. Temperature 42 °C significantly increased biogas production from primary sewage sludge (by 60 % in comparison with production at 36 °C). For activated sewage sludge samples no significant influence of temperature on the biogas production was observed.
11
Ostojski, Arkadiusz. "Elementary analysis and energetic potential of the municipal sewage sludges from the Gdańsk and Kościerzyna WWTPs." E3S Web of Conferences 26 (2018): 00004. http://dx.doi.org/10.1051/e3sconf/20182600004.
Full textAbstract:
This paper aims to present municipal sewage sludge (MSS) elementary analysis and energetic potential based on measurement of heat of combustion (higher heating value HHV) and calculation of calorific values (lower heating value LHV). The analysis takes into the consideration water content in sewage sludge, at different utilization stages, in wastewater treatment plants in Gdańsk Wschód and Kościerzyna – Pomeranian Voivodeship. The study yielded the following results (in % dry matter): ash 19÷31 %, C - 31÷36 %, H - 5÷6 %, N - 4÷6 %, O - 28÷32 %, S – 1 %. Calorific value of stabilized sludges in Gdańsk was on average 13.8÷15 MJ/kg. In case of sludges not undergoing digestion from Kościerzyna WWTP, the calorific value was at the level of 17.5 MJ/kg. Thus, sewage sludges are good energy carriers. High water content though is the problem, as it lowers the useful effect of heat. There is no alternative for thermal sewage sludge neutralization, which is in conformity with valid Polish National Waste Management Plan (KPGO 2022).
12
Malczewska, Beata, Bartosz Jawecki, and Sławomir Woźniak. "Zalety i wady kompostowania osadów ściekowych w porównaniu z termicznym ich spalaniem – studium przypadku." Przegląd Naukowy Inżynieria i Kształtowanie Środowiska 26, no. 1 (2017): 125–35. http://dx.doi.org/10.22630/pniks.2017.26.1.11.
Full textAbstract:
New challenges for the territorial government in the field of urban sewage sludge oblige to limit it storage. Sewage sludge management is one of the most difficult environmental and economic problems. Therefore, it is important to choose the right technology for the sewage sludge disposal. The purpose of this article is an evaluation of applied disposal methods on sewage treatment sludge plant and comparison of this method (sewage sludge composting) with thermal transformation of sewage sludge. Study confi rms that, in the present case, the composting of sewage sludge is the most advantageous solution.
13
Stoll, U., and K. Parameswaran. "Treatment and disposal of domestic sewage sludge and nightsoil sludge for Bangkok." Water Science and Technology 34, no. 11 (1996): 209–17. http://dx.doi.org/10.2166/wst.1996.0282.
Full textAbstract:
In the recent past, treatment and disposal of sewage sludge has become an expensive and environmentally sensitive problem in western countries. It is becoming a growing problem worldwide with its focus on the megacities in the newly developed countries, since sludge production will continue to increase as new sewage treatment plants are built and environmental quality standards become more stringent. With some traditional disposal routes coming under pressure, the challenge facing the wastewater treatment authorities is to find cost-effective and environmentally sound solutions whilst responding to increasing public awareness. This paper describes the development of a plan for integrated management of municipal sludges (sewage sludge, nightsoil/septage sludge) which has high security for medium-and long-term sludge utilization and disposal as the goal. It concludes that incineration and agricultural use should be implemented and operated in parallel as first priority options.
14
Ramírez, J. J., B. Frostell, and R. Galindo. "A systems approach evaluation of sludge management strategies: sludge management in Valparaíso and Aconcagua, Chile." Water Science and Technology 46, no. 4-5 (2002): 381–87. http://dx.doi.org/10.2166/wst.2002.0630.
Full textAbstract:
In the 5th Region, located in central Chile, infrastructure projects are being implemented in order to increase the capacity to treat and dispose of sewage. In order to analyse the sludge management alternatives the ORWARE model was used. The research project was divided in two stages: in the first stage, the sewage and sludge management strategies to be compared as well as the objectives were established. The management alternatives chosen were for chemical or biological treatment of sewage while for sludge the management alternatives were based on digestion, composting or lime stabilisation. The second stage included simulation and analysis of results. The main conclusions of the work were: if “lowest possible emissions” is the main objective of sewage treatment, biological treatment should be applied. Regarding pathogen reduction, both chemical precipitation and biological treatment attain an adequate reduction if the treated sewage is to be discharged to the sea. On the other hand, additional disinfection is needed in the case of discharge to rivers. Control at source should be stressed to avoid heavy metals and toxic organic compounds in the sludge.
15
Werle, Sebastian. "Sewage Sludge-To-Energy Management In Eastern Europe: A Polish Perspective." Ecological Chemistry and Engineering S 22, no. 3 (2015): 459–69. http://dx.doi.org/10.1515/eces-2015-0027.
Full textAbstract:
Abstract The Sewage Sludge Directive 86/278/EEC was adopted about 30 years ago with a view to encourage sewage sludge reuse in agriculture and to regulate its use. Meanwhile, some EU Member States have adopted stricter standards and management practices than those specified in the Directive. In particular, the majority of Member States has introduced more stringent standards for sludge quality, including stricter limits for most potentially toxic elements, organic contaminants and other elements. In general, untreated sludge is no longer applied and in several Member States it is prohibited. In some cases, stringent standards have resulted in an effective ban on use of sludge in agriculture. Moreover, the implementation of the Urban Wastewater Treatment Directive 91/271/EC should increase EU production of sewage sludge, thus enhancing problems related to sustainable sewage sludge management. Additionally, European legislation prohibits the landfill and water deposits of sewage sludge. The latest trends in the field of sludge management, ie combustion, pyrolysis, gasification and co-combustion, have generated significant scientific interest. This trend is specially strong visible in “new” EU Members countries which have to introduce strong EU Directive in their low system. Here the review the state of knowledge and technology in thermal methods for the utilization of municipal sewage sludge to obtain useful forms of energy such as pyrolysis, gasification, combustion, and co-combustion taking into consideration Poland situation is presented.
16
Christodoulou, A., and K. Stamatelatou. "Overview of legislation on sewage sludge management in developed countries worldwide." Water Science and Technology 73, no. 3 (2015): 453–62. http://dx.doi.org/10.2166/wst.2015.521.
Full textAbstract:
The need to apply innovative technologies for maximizing the efficiency and minimizing the carbon footprint of sewage treatment plants has upgraded sewage sludge management to a highly sophisticated research and development sector. Sewage sludge cannot be regarded solely as ‘waste’; it is a renewable resource for energy and material recovery. From this perspective, legislation on sewage sludge management tends to incorporate issues related to environmental protection, public health, climate change impacts and socio-economic benefits. This paper reviews the existing legislative frameworks and policies on sewage sludge management in various countries, highlighting the common ground as well as the different priorities in all cases studied. More specifically, the key features of legislation regarding sludge management in developed countries such as the USA, Japan, Australia, New Zealand and the European Union (EU27) are discussed.
17
Šurić, Jona, Ivan Brandić, Anamarija Peter, et al. "Wastewater Sewage Sludge Management via Production of the Energy Crop Virginia Mallow." Agronomy 12, no. 7 (2022): 1578. http://dx.doi.org/10.3390/agronomy12071578.
Full textAbstract:
Wastewater treatment plants are facilities where wastewater is treated by technological processes. A byproduct of a wastewater treatment plant is sewage sludge, which can be both a good soil conditioner and a source of nutrients for the crops to which it is applied. Energy crops are non-food plants that can cleanse the soil of heavy metals through their ability to phytoremediate. The purpose of this study is to determine the effects of different amounts of sewage sludge on soil and plants. In the experiment Virginia mallow (Sida hermaphrodita L.) was used and the influence of stabilized sewage sludge in the amounts of 1.66, 3.32 and 6.64 t/ha dry matter on the energy composition and biomass yield was observed.The obtained results showed a yield of 8.85 t/ha at the maximum amount of sewage sludge used. Hemicellulose content was 20.20% in the application of 6.64 t/ha of sewage sludge and 19.70% in the control, while lignin content was 17.97% in the control and 16.77% in the maximum amount of sewage sludge. The heavy metals molybdenum and nickel did not differ significantly under the influence of larger amounts of sewage sludge, while manganese increased from 23.66 to 35.82 mg/kg.
18
Smurzyńska, Anna, Kamil Kozłowski, Marta Cieślik, et al. "Methane fermentation as a possibility of utilization and energy – efficient management of sewage sludge." BIO Web of Conferences 10 (2018): 01016. http://dx.doi.org/10.1051/bioconf/20181001016.
Full textAbstract:
Sewage sludge contains organic and biogenic substances that should be used. These materials may also contain toxic substances and heavy metals, and therefore require proper management in accordance with applicable law. Sewage sludge disposal is important for the protection of the environment, but also for the costs associated with the disposal of sludge. There are many technologies that are designed to use the properties of sewage sludge. It should be emphasized, however, that the proposed sewage sludge management technologies require investment outlays. In the present situation, research experiments have been carried out in the Environmental Technology Laboratory of the University of Environmental and Life Sciences in Poznan, indicating the possibility of efficient use of sewage sludge in the methane fermentation process. The use of sewage sludge in the fermentation mix allows the fertilizer to be obtained in the form of fermentation pulp, which also has the same properties as natural fertilizers. It should also be noted that the effect of physicochemical changes is the production of biogas, which is the source of electricity and/or heat. The economic sustainability of the use of sludge (taking into account the current costs of their disposal) is unequivocally positive when co-fermented in an appropriate proportion. The results show that sewage sludge can be successfully used in biogas plants as a co-substrate of fermentation mix. Therefore, the use of sewage sludge in biogas plants not only allows for the safe management and production of fertilizers, but also for the "green" energy.
19
Dregulo, A. M. "A STUDY OF HEAVY METAL COMPOSITIONS AND PHOSPHATES IN POLYMER SUBSTANCES OF THE ACTIVATED SLUDGE BIOMASS." Water and Ecology 25, no. 3 (2020): 8–13. http://dx.doi.org/10.23968/2305-3488.2020.25.3.8-13.
Full textAbstract:
Introduction. Heavy metals discharged with wastewater can lead to a toxic effect on the microbiocenosis of activated sludge and significantly decrease the degree of wastewater treatment, which dictates the need for a more detailed study and search for ways to detoxify activated sludge at the recycling stage and, at the same time, solve the problems of the neutralization of sewage sludge for safe soil disposal. To ensure the adequacy of the approach to the choice of the methodology for the neutralization of sludge, including sewage sludge, it is necessary to perform compositional analysis of their organic fractions and heavy metal compositions. Methods. To determine the quantitative content of organic components in activated sludge, a sample of sludge was dried to an air-dry state and then subjected to separation into fractions using a method based on the different solubility of compounds with the use of different solvents. Then, extractants were added step by step to the weighted samples of sewage sludge weighing about 2 g each (in a volume 20 times greater than the weight of the weighted sample (40 ml)). Results. The results of the study show that polysaccharides are the dominant form of the organic fraction (polymers) in sewage sludge. Most heavy metals were identified in acidic polysaccharides, humic-like acids and lipids. Significant concentrations of phosphates were observed for the same components of polymer substances in the biomass of activated sludges. Conclusion. The products of extraction of polymer substances of the activated sludge biomass and the content of heavy metals in them may indicate the biosorption of heavy metals by zoogleal accumulations (having a polysaccharide structure) of activated sludges in aeration tanks during biological treatment. Therefore, extracellular biopolymers can be a “target” in the development of targeted technologies for the neutralization of activated sludges.
20
Ciuła, Józef, Iwona Wiewiórska, Halina Potok, and Aneta Babiarz. "Recycling of Sewage Sludge in Poland – Environmental Aspects and Risks Related to Its Management in a Circular Economy." Rocznik Ochrona Środowiska 27 (June 10, 2025): 320–40. https://doi.org/10.54740/ros.2025.026.
Full textAbstract:
Sewage sludge generated in the process of household and industrial wastewater treatment plants should be utilized in line with the principles of sustainable development, taking into account the processes that are an inherent part of the circular economy. The research conducted for this paper has shown that, on average, in Poland between 2019 and 2023, over a million sewage sludge deposits were created; 57% of these were household and 43% were industrial sewage sludge. The generated sewage sludge is processed in four major processes, covering its use: in agriculture (56.09%), thermal processing (20.62%), storage (17.5%), and compost production (4.72%). The analysis of technical and environmental aspects has demonstrated that the available technologies are sufficient to utilize sewage sludge in accordance with the principle of a circular economy, utilizing state-of-the-art technologies. On the other hand, the heavy metals contained in sewage sludge pose a potential threat to human health if the sludge is not properly managed and safety rules are not adhered to in waste management. The research results form a basis for discussion, focusing on both the quality and quantity aspects, leading to the optimization of methods for utilizing sewage sludge in thermal, organic, or material recycling processes to increase the recycling rate of sewage sludge in Poland.
21
ALHAFEZ, Livia, Nicoleta MUNTEAN, Edward MUNTEAN, and Dumitru RISTOIU. "Polycyclic Aromatic Hydrocarbons in Sewage Sludge from Cluj-Napoca Wastewater Treatment Plant." Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Agriculture 70, no. 2 (2013): 387–89. http://dx.doi.org/10.15835/buasvmcn-agr:9760.
Full textAbstract:
Polycyclic aromatic hydrocarbons (PAHs) are organic compounds widely distributed in the environment. In the present work, concentrations of these organic compounds in sludge samples from Cluj-Napoca wastewater treatment plant are reported. The objective was to investigate PAHs in sludge from wastewater treatment plant and to assess their potential for land application. Primary sludge, fermented sludge, fermented concentrated sludge, anaerobic-digested dehydrated sludge and rejection water samples were collected monthly from December 2012. Ultrasonic assisted extraction with hexane was used, being followed by filtration and concentration to dryness in a rotary evaporator; the obtained residue was redisolved in acetonitrile. High performance liquid chromatographic analysis was achieved using an Agilent 1100 system consisting in a solvent degasser, a quaternary pumping system, an autosampler, a column oven, a diode-array detector and a fluorescence detector. Separations were accomplished using an Envirosep PP column with acetonitrile:water as mobile phase (45:55 v/v). Detection limit was 0.001 ïg/ kg, with good linearities for all PAHs, with correlation coefficients higher than 0.998. PAHs with four rings appeared to be the primary components in most of the tested sludge samples, the highest concentration levels being in anaerobic-digested dehydrated sludge samples. The obtained results can be helpful for the regional policy makers to make proper decisions on treating the increasing amount of sewage sludge, to provide practical reference for establishing threshold values of PAHs for land application of sludge, knowing that the practice of recycling sewage sludge onto agricultural lands poses an additional risk of soil contamination with PAHs.
22
Zere Taskin, Sinem, and Ugur Bilgili. "Using Sewage Sludge as Alternative Fertilizer: Effects on Turf Performance of Perennial Ryegrass." Sustainability 15, no. 18 (2023): 13597. http://dx.doi.org/10.3390/su151813597.
Full textAbstract:
Two years of research were carried out to evaluate the effects of various sewage sludge and nitrogen doses on the turf performance of perennial ryegrass (Lolium perenne L.) under Mediterranean-type climatic conditions. Four nitrogen sources (NS) [NS1: ammonium nitrate (26%), NS2: Bursa City’s wastewater treatment plant’s waste, NS3: biogas production plant reactor waste, and NS4: food processing and canning factory’s sludge waste] were used in the research. Four different nitrogen doses (0.0, 2.0, 4.0, and 6.0 g m−2) were applied. The sewage sludges were analyzed before the start of the research. It was determined that the heavy metal concentrations were below the limit values, and the plant nutrient content was high. Turfgrass color and quality observations were taken in the study, and turfgrass clipping yield was determined. The 4.0 g m−2 nitrogen dose provided acceptable turf color and quality values among the sewage sludges. NS4 showed the best turf performance among the sewage sludges. Despite increased turf color and quality values, sewage sludge produced a low clipping yield. Food processing and canning factories’ sewage sludges can be alternatives to a nitrogen source.
23
Siddiqui, Mohd Imran, Hasan Rameez, Izharul Haq Farooqi, and Farrukh Basheer. "Recent Advancement in Commercial and Other Sustainable Techniques for Energy and Material Recovery from Sewage Sludge." Water 15, no. 5 (2023): 948. http://dx.doi.org/10.3390/w15050948.
Full textAbstract:
Rapid population growth and urbanization have resulted in a multi-fold increase in water consumption over the last few decades, resulting in the generation of large amounts of sewage and sewage sludge that impose severe environmental burdens if not handled properly. Sludge management itself accounts for up to 50% of the total operating costs of wastewater treatment plants (WWTPs). Conventional sludge management practices such as incineration, landfilling, and ocean disposal have been deemed difficult in light of today’s stringent environmental legislation and compliance standards. As a result, progress has been made toward developing more sustainable approaches for sludge management. This study reviews recent advancements in sewage sludge management techniques that not only ensure the safe disposal of sewage sludge but also focus on utilizing the potential of sewage sludge as feedstock for energy and resource recovery. Energy could be recovered by subjecting the pre-treated sludge to controlled anaerobic digestion (AD) to produce biogas or by utilizing the lipid content of the sewage sludge through esterification or direct sludge pyrolysis to produce biodiesel/bio-oil. Heavy metals such as Ag, Au, Cu, Fe, Ga, Cr, and others, as well as nutrients such as N, P, K, Mg, S, and others, could also be recovered. If energy and resource recovery from sewage sludge is practiced on a global scale, it could significantly contribute to global greenhouse gas (GHG) emission reduction. This review discusses the commercially developed and still-under-research technologies for energy and other resource recovery of sewage sludge. Additionally, techniques, along with their limitations and potential measures to improve their yields, are also discussed.
24
Staśkiewicz, Marcin, and Krystyna Lelicińska-Serafin. "Właściwości paliwowe komunalnych osadów ściekowych jako odnawialnego źródła energii." Polish Journal for Sustainable Development 24, no. 2 (2020): 77–84. http://dx.doi.org/10.15584/pjsd.2020.24.2.9.
Full textAbstract:
The technological properties of municipal sewage sludge indicate various possibilities of its management. They also have potential for use as a renewable energy source. The paper uses own research on the fuel properties of municipal sewage sludge, analyses the results of the research, assesses the potential of the sewage sludge as a renewable energy source and indicates the possibilities of its management. The research shows high values of combustion heat and high content of total organic matter in the analysed sewage sludge.
25
Bradley, Robert M., and G. R. Dhanagunan. "Sewage sludge management in Malaysia." International Journal of Water 2, no. 4 (2004): 267. http://dx.doi.org/10.1504/ijw.2004.005526.
Full text
26
Mininni, Giuseppe. "Effective management of sewage sludge." Environmental Science and Pollution Research 22, no. 10 (2015): 7187–89. http://dx.doi.org/10.1007/s11356-015-4433-7.
Full text
27
Seghezzo, L., C. M. Cuevas, A. P. Trupiano, et al. "Stability and activity of anaerobic sludge from UASB reactors treating sewage in subtropical regions." Water Science and Technology 54, no. 2 (2006): 223–29. http://dx.doi.org/10.2166/wst.2006.509.
Full textAbstract:
The production of small amounts of well-stabilized biological sludge is one of the main advantages of upflow anaerobic sludge bed (UASB) reactors over aerobic wastewater treatment systems. In this work, sludge produced in three pilot-scale UASB reactors used to treat sewage under subtropical conditions was assessed for both stability and specific methanogenic activity. Stability of primary sludge from settling tanks and digested sludge from conventional sludge digesters was also measured for comparison purposes. Kinetic parameters like the hydrolysis rate constant and the decay rate constant were calculated. High stability was observed in sludge from UASB reactors. Methanogenic activity in anaerobic sludges was relatively low, probably due to the low organic matter concentration in influent sewage. Knowledge on sludge growth rate, stability, and activity might be very useful to optimize sludge management activities in full-scale UASB reactors.
28
Đurđević, Dinko, Saša Žiković, and Paolo Blecich. "Sustainable Sewage Sludge Management Technologies Selection Based on Techno-Economic-Environmental Criteria: Case Study of Croatia." Energies 15, no. 11 (2022): 3941. http://dx.doi.org/10.3390/en15113941.
Full textAbstract:
The management and disposal of sewage sludge is becoming a growing concern at the global level. In the past, the main goal was to completely eliminate sewage sludge since it was deemed a threat to humans and the environment, but recently different possibilities for energy generation and material recovery are emerging. Existing technologies such as incineration or direct application in agriculture contribute to quantity reduction and nutrient recovery but are unable to fully exploit the potential of sewage sludge within the frameworks of circular economy and bioeconomy. This paper developed a model within the PROMETHEE method, which analyses technologies for the sustainable management of sewage sludge, which could make the most from it. For the empirical part of the study, the Republic of Croatia was used as a country in which sewage sludge is increasing in quantity as a result of recent upgrades and expansions in the wastewater system. Incineration, gasification, anaerobic digestion, and nutrient recovery were analyzed as treatment concepts for the increased amounts of sewage sludge. The model reveals that the best solution is the material recovery of sewage sludge, using the struvite production pathway through analysis of selected criteria.
29
Wojtasik, Michał. "Zagospodarowanie osadów ściekowych." Nafta-Gaz 80, no. 10 (2024): 646–52. http://dx.doi.org/10.18668/ng.2024.10.06.
Full textAbstract:
Osady ściekowe to produkt uboczny oczyszczania ścieków. Ten stały produkt powstaje zarówno przy obróbce ścieków komunalnych, jak i przemysłowych. Jest to materiał problematyczny, jednak cieszący się coraz większym zainteresowaniem, między innymi ze względu na jego potencjał energetyczny oraz odpadowe pochodzenie. Każde wykorzystanie osadów ściekowych wpisuje się w gospodarkę o obiegu zamkniętym, więc przewiduje się, że w najbliższych latach będzie to produkt poszukiwany na rynku. Osady ściekowe stanowią odpad o bardzo złożonym i zmiennym składzie, zależnym od miejsca wytworzenia i zastosowanej technologii oczyszczania ścieków – wykazano nawet pewne zmienności jego składu zależne od czasu (pory roku) ich pozyskania. W składzie osadów ściekowych znajdować się może wiele niebezpiecznych substancji, takich jak metale ciężkie, dlatego przed składowaniem lub ponownym wykorzystaniem materiał ten musi zostać przetworzony lub zmodyfikowany. Z drugiej strony osady ściekowe charakteryzują się stosunkowo wysoką wartością opałową, co powoduje, że stają się one coraz bardziej interesującym materiałem energetycznym o niskim śladzie węglowym (odpad). Przeszkodą w bezpośrednim jego zastosowaniu jako paliwa jest wysoka zawartość związków nieorganicznych, co przyczynia się do powstawania dużych ilości popiołów pochodzących z ich spalania. W niniejszej pracy przedstawiono ogólną charakterystykę osadów ściekowych powstających w procesie oczyszczania zarówno ścieków komunalnych, jak i przemysłowych. Zaprezentowano przykładowe wyniki badań fizykochemicznych osadów ściekowych pozyskanych z regionalnej instalacji przetwarzania odpadów komunalnych (RIPOK). Omówiono zmienność niektórych parametrów fizykochemicznych. Przedstawiono wybrane, perspektywiczne metody zagospodarowania osadów ściekowych, w tym zastosowanie ich w rolnictwie, kompostowanie, fermentację oraz termiczne przekształcanie. Szczególną uwagę zwrócono na metodę pirolizy, czyli beztlenowego przetwarzania osadów w kierunku otrzymywania biowęgla, czyli produktu o dużej wartości. Opisano kierunki wykorzystania biowęgla otrzymanego z osadów ściekowych. Na zakończenie artykułu odniesiono się do aktualnej struktury zagospodarowania osadów ściekowych w Polsce.
30
Ender, Tommy, Vicky Shettigondahalli Ekanthalu, and Michael Nelles. "HYDROTHERMAL CARBONIZATION OF SEWAGE SLUDGE – AN EFFECTIVE APPROACH TO TREAT AND MANAGE SEWAGE SLUDGE IN RURAL AREAS OF GERMANY?" Volume 24 - September 2023, no. 24 (September 30, 2023): 70–77. http://dx.doi.org/10.31025/2611-4135/2023.18308.
Full textAbstract:
As the result of new regulation from the German Sewage Sludge Ordinance (AbfKlärV 2017) and the future obligation to recover phosphorus, thermal treatment (mono-incineration) has become increasingly popular, whereas land-based utilization has decreased. Germany has produced 1.71 million metric tons (DM) of sewage sludge in the year 2021. Sewage sludge contains important nutrients such as phosphorus but also heavy metals and organic pollutants making the direct utilization of sewage sludge in agriculture controversial. Rural areas in particular have benefited from land-based sewage sludge utilization however the future ban on direct land-based utilization is forcing them to find alternative solutions for sewage sludge treatment and management. Hydrothermal carbonization (HTC) has developed considerably over the last 15 years and offers a viable alternative for the utilization of municipal and industrial organic waste such as sewage sludge. The process takes place in an aqueous environment without the need for pre-drying sewage sludge and thereby facilitating direct processing. HTC is especially suitable in combination with the recovery of nutrients like phosphorus. Technologies to recover this essential resource are important because phosphorus is an element that cannot be substituted and is therefore essential. HTC could make a significant contribution to sewage sludge management in combination with phosphorus recovery. However, the technology has yet to establish itself as a sewage sludge valorization process (2023) and is not yet a recognized state-of-the-art. Nevertheless, the HTC technology could gain greater relevance in the future, especially as an alternative valorization pathway for sewage sludge in rural areas of Germany.
31
Domini, Marta, Giorgio Bertanza, Reza Vahidzadeh, and Roberta Pedrazzani. "Sewage Sludge Quality and Management for Circular Economy Opportunities in Lombardy." Applied Sciences 12, no. 20 (2022): 10391. http://dx.doi.org/10.3390/app122010391.
Full textAbstract:
From the perspective of a circular economy that prioritizes resource reuse and recovery, sewage sludge could be a source of nutrients for agricultural soils or a source of energy, depending on its characteristics. Lombardy is the region with the highest quantity of sludge production and management in Italy. A methodology was developed to: extract and analyze quantitative data on sewage sludge (EWC 190805) production and management (2017–2018); collect and analyze qualitative data from publicly available documents in tender processes for sewage sludge management (2014–2020). Sludge from Lombardy’s wastewater treatment facilities displayed average qualities that were useful for recovery in agriculture after additional stabilization treatments. Sludge showed generally low heating values and elevated water content and should require additional treatments to be used in mono-combustion. The study discovered that there is still work to be done in sludge recovery in agriculture in Lombardy, taking biosolid quality into account. Sludge, on the other hand, can be converted into energy. The methodology for collecting and analyzing site-specific data presented here can be applied to other areas. The findings can assist and guide decision-makers in developing future regional sewage sludge management strategies.
32
Górka, Justyna, Małgorzata Cimochowicz-Rybicka, and Dominika Poproch. "Sludge Management at the Kraków-Płaszów WWTP—Case Study." Sustainability 14, no. 13 (2022): 7982. http://dx.doi.org/10.3390/su14137982.
Full textAbstract:
Municipal wastewater treatment plants are good examples of facilities where the concept of a circular economy model can be effectively implemented by the recovery of energy as well as secondary and natural materials. That is why anaerobic co-digestion has become one of the most appealing renewable energy pathways and takes a key position within sludge-handling processes. This research looked into the feasibility of the utilization of water sludge from a water treatment plant in anaerobic co-digestion with sewage sludge. The experiments confirmed that anaerobic digestion of sewage sludge together with water sludge significantly improved fermentation gas (biogas) production. The best results were observed when water treatment sludge constituted 30% of the mass of sewage sludge (as volatile solids, VS). At this ratio, approximately 20% more biogas was produced in laboratory experiments compared to the biogas production from sewage sludge only. The results, once confirmed on a semi-technical scale, will help to develop a sequence of processes which would enhance biogas production. Both the technology and the final product offer a comprehensive solution for waste generated at water and wastewater treatment plants. The innovative approach allows for the use of various waste streams and their combined processing following the principle of the circular economy.
33
Eljarrat, Ethel. "Effects of Sewage Sludges Contaminated with Chlorinated Aromatic Hydrocarbons on Sludge-Treated Areas (Soils and Sediments)." Scientific World JOURNAL 2 (2002): 1729–33. http://dx.doi.org/10.1100/tsw.2002.880.
Full textAbstract:
The fate of PCDDs, PCDFs, and PCBs in sewage sludges after different management techniques — such as agricultural application, land restoration, and marine disposal — was studied. Changes observed in the concentrations, in the ratio between PCDD and PCDF levels, and in the isomeric distribution suggest the influence of the sewage sludge on the sludge-treated areas (soils and sediments). Whereas land application techniques seem to produce no serious environmental consequences, marine disposal practices produce considerable increases in the levels of contamination in marine sediments.
34
Wójcik, Marta, Feliks Stachowicz, and Adam Masłoń. "Ecological and Economic Aspects of the Application of Sewage Sludge in Energetic Plant Plantations - A Swot Analysis." Civil and Environmental Engineering Reports 27, no. 4 (2017): 157–68. http://dx.doi.org/10.1515/ceer-2017-0058.
Full textAbstract:
Abstract Sewage sludge management in Poland is a relatively new field of waste management called “in statu nascendi”, the standards of which have not been recognized yet. It also requires the implementation of new solutions in the field of sewage sludge. So far, the most popular method of sewage sludge utilization has been landfill disposal. In line with the restriction placed on landfill waste with a calorific value above 6 MJ/kg introduced on 1 January 2016, agricultural use and thermal methods are particularly applied. Municipal sewage sludge may be successfully used in the cultivation of energetic plant plantations. The aforementioned waste could be treated as an alternative to traditional mineral fertilizers, which in turn might successfully provide valuable nutrients for plants. This paper illustrates the SWOT analysis (Strengths, Weaknesses, Opportunities, and Threats) associated with the use of sewage sludge from Świlcza-Kamyszyn WTTP (Podkarpackie Province, Poland) for agricultural purposes. This analysis could be useful in evaluating the utility of sewage sludge in perennial plant plantations in order to determine the appropriate waste management strategies.
35
Merzari, Fabio, Jillian Goldfarb, Gianni Andreottola, Tanja Mimmo, Maurizio Volpe, and Luca Fiori. "Hydrothermal Carbonization as a Strategy for Sewage Sludge Management: Influence of Process Withdrawal Point on Hydrochar Properties." Energies 13, no. 11 (2020): 2890. http://dx.doi.org/10.3390/en13112890.
Full textAbstract:
Conventional activated sludge systems, still widely used to treat wastewater, produce large amounts of solid waste that is commonly landfilled or incinerated. This study addresses the potential use of Hydrothermal Carbonization (HTC) to valorize sewage sludge residues examining the properties of hydrochars depending on HTC process conditions and sewage sludge withdrawal point. With increasing HTC severity (process residence time and temperature), solid yield, total Chemical Oxygen Demand (COD) and solid pH decrease while ash content increases. Hydrochars produced from primary (thickened) and secondary (digested and dewatered) sludge show peculiar distinct properties. Hydrochars produced from thickened sludge show good fuel properties in terms of Higher Heating Value (HHV) and reduced ash content. However, relatively high volatile matter and O:C and H:C ratios result in thermal reactivity significantly higher than typical coals. Both series of carbonized secondary sludges show neutral pH, low COD, enhanced phosphorous content and low heavy metals concentration: as a whole, they show properties compatible with their use as soil amendments.
36
Shagidullin, R. R., А. M. Petrov, and D. V. Ivanov. "Approaches to Recultivation of Sewage Sludge Cards of Biological Treatment Facilities of the City of Kazan." Ecology and Industry of Russia 25, no. 3 (2021): 18–23. http://dx.doi.org/10.18412/1816-0395-2021-3-18-23.
Full textAbstract:
Quantitative, physicochemical, toxicological and microbiological characteristics of sewage sludge accumulated on sewage sludge cards of Municipal Unitary Enterprise Vodokanal in Kazan are determined. The use of sewage sludge for land restoration and as organic fertilizers is limited by the high content of bacteria of the group of Escherichia coli and heavy metals. Considering the significant volumes of sewage sludge, a method for their restoration directly in sewage sludge cards using quicklime and zeolite is proposed. Experiments have shown that the introduction of calcium oxide and activated zeolite in the amount of 2.5–5.0 % and 20–30 % by weight of the raw sludge, respectively, stops the fermentation processes, provides disinfection, dehydration and structuring of sewage sludge, promotes the immobilization of heavy metals. The intensity of ammonia release into the atmosphere was determined for different technological parameters of sewage sludge treatment.
37
Panasiewicz, Katarzyna, Alicja Niewiadomska, Hanna Sulewska, et al. "The effect of sewage sludge and BAF inoculant on plant condition and yield as well as biochemical and microbial activity of soil in willow (Salix viminalisL.) culture as an energy crop." PeerJ 7 (March 11, 2019): e6434. http://dx.doi.org/10.7717/peerj.6434.
Full textAbstract:
Excessive amounts of sewage sludge produced in sewage treatment plants along with the ban on its storage and dumping require rapid solutions to the problem of sewage sludge management. An example of a rational and environmentally viable method may be provided by its application in agriculture and environmental management. The optimal solution is to use sludge as a fertiliser for industrial plants, including energy crops, that is, those not used in food production. For environmental reasons it is essential to control soil quality and condition following sludge application. Analyses of the residual effect of sewage sludge and bacteria, actinobacteria, fungi microbial inoculant (BAF) on selected physiological parameters of plants and microbial activity of soil were conducted in the years 2013–2015 on experimental fields of the Poznan University of Life Sciences. The results indicate that the application of sewage sludge increased yields and improved selected photosynthesis activity and biometric traits of willow. Among the tested combinations the best results were obtained following the application of sewage sludge combined with the BAF medium microbial inoculant. Similar dependencies were observed when evaluating soil microbial activity.
38
Hawrylik, Eliza, and Andrzej Butarewicz. "Toxicity assessment of sewage sludge from municipal sewage treatment plants." Ekonomia i Środowisko - Economics and Environment 82, no. 3 (2022): 257–68. http://dx.doi.org/10.34659/eis.2022.82.3.491.
Full textAbstract:
The aim of this study was to assess the toxicity of sewage sludge from the municipal sewage treatment plant in Bialystok. Raw sewage, sewage sludge from the primary settling tank, activated sludge, sludge before the fermentation chamber, recirculated sludge and sewage sludge after fermentation and dehydration on press were tested. The Microtox Model 500 kit using Aliivibrio fischeri luminescent bacteria was used for the toxicity analyzes. The EC50 index (indicating the concentration of toxic substances resulting in a 50% reduction in the intensity of luminescence of the bacterial strains used) converted into the TUa toxicity units was adopted as the value describing the toxicity of the tested media. The obtained results showed high and very high ecotoxicity of raw sewage and sewage sludge from the primary settling tank, sludge in front of the fermentation chamber and after fermentation and dehydration in the press. The use of tests determining the toxicity of sewage flowing into the sewage treatment plant and sewage sludge generated at various stages of the treatment process allows to detect the danger associated with the uncontrolled discharge of toxic substances into the sewage system.
39
Evers, P., F. Schmitt, D. R. Albrecht, and N. Jardin. "The Ruhrverband sewage sludge disposal concept in the conflict between European and German standards and regulations." Water Science and Technology 52, no. 10-11 (2005): 247–53. http://dx.doi.org/10.2166/wst.2005.0700.
Full textAbstract:
The Ruhrverband, acting as a water association responsible for integrated water resources management within the entire natural river basin of the Ruhr, operates a network of 83 wastewater treatment plants (WWTPs) and connected sludge disposal facilities. According to German regulations, the disposal of sewage sludge containing more than 5% of organic dry solids will be prohibited as of 1 June 2005. In Germany, the only future alternative to incineration will be the agricultural utilization of sludge. However, this way of sludge disposal is presently the subject of critical discussions in Germany because of the organic and inorganic toxic substances, which may be contained in sewage sludge, despite the fact that very stringent standards are to be met by agricultural uses. On the other hand, application of sewage sludge to agricultural land is explicitly supported by the European Sewage Sludge Directive 86/278/EEC. In the face of this controversial situation the Ruhrverband has initiated, in 2000, the development of a comprehensive and sustainable sludge and waste disposal concept for all wastewater facilities it operates in the entire Ruhr River Basin. The concept includes de-central sludge digestion and dewatering and subsequent transport to two central sludge incineration plants. It is expected that in future not more than 5% of all sludges produced in Ruhrverband's WWTPs will be used in agriculture. That means, the major part of 95% will have to be incinerated.
40
Đurđević, Dinko, Saša Žiković, and Tomislav Čop. "Socio-Economic, Technical and Environmental Indicators for Sustainable Sewage Sludge Management and LEAP Analysis of Emissions Reduction." Energies 15, no. 16 (2022): 6050. http://dx.doi.org/10.3390/en15166050.
Full textAbstract:
The waste management sector is transitioning from a dirty and undesirable industry towards a green and sustainable future where energy and materials are recycled. Recycling has potential in sewage sludge treatment, where energy and highly valuable nutrients can be recovered through innovative and sustainable sludge management. Although there are many technologies and techniques already used for sewage sludge, the indicators for their sustainability are not developed. In terms of sustainable and innovative sewage sludge treatment, usually, only techno-economic aspects of existing and current technologies are considered. We explore the existing indicators and propose new indicators for sustainable and innovative sewage sludge treatment technologies. The indicators are differentiated into four main categories: technical, social, environmental and economic, where specific indicators are explained, followed by a description of their impact on sustainability. We also consider a case study using the LEAP tool, which considered GHG emissions when utilizing sewage sludge as an energy feedstock to replace existing fossil fuels in the energy mix in several scenarios. The results showed a significant emissions reduction when sludge is used—37.6% and 90.9% in 2030 and 2050, respectively.
41
Zhang, Xuan, Yang Jiao, Laihao Yu, Lili Liu, Xidong Wang, and Yingyi Zhang. "Effect of Sewage Sludge Addition on Microstructure and Mechanical Properties of Kaolin-Sewage Sludge Ceramic Bricks." Coatings 12, no. 7 (2022): 944. http://dx.doi.org/10.3390/coatings12070944.
Full textAbstract:
The dramatic increase in sewage sludge production requires researchers to develop and explore more commercially viable ways for alleviating current environmental and socioeconomic challenges connected with its routine management. It has been established that sewage sludge can be processed to fabricate various valuable products or as fuels for electricity generation. In this research, kaolin (calcined from coal gangue) and sewage sludge were successfully used to prepare porous ceramic bricks without any additives. The effect of sewage sludge on the microstructure, phase composition, and mechanical properties of kaolin-sewage sludge ceramic bricks was investigated. The results show that the kaolin-sewage sludge ceramic bricks are mainly composed of mullite (3Al2O3·2SiO2), sillimanite (Al2SiO5), aluminum phosphate (AlPO4), hematite (Fe2O3) as well as a small amount of quartz (SiO2). The ceramic bricks present a typical porous structure, and the number and size of micropores increases noticeably with the increase of sewage sludge content. The sintering shrinkage rate and porosity of ceramic bricks increased significantly with the increase of sewage sludge content, which is mainly attributed to the increase of liquid phase proportion and high temperature volatilization. Sewage sludge can significantly improve the mechanical properties of kaolin-sewage sludge ceramic bricks. When the sewage sludge content is 30 wt.%, the ceramic bricks present the maximum compressive strength and flexural strength and high porosity (32.74%). The maximum sintering shrinkage rate and porosity are 12.17% and 40.51%, respectively.
42
Spataru, Ana, Rohan Jain, Jae Wook Chung, Gabriel Gerner, Rolf Krebs, and Piet N. L. Lens. "Enhanced adsorption of orthophosphate and copper onto hydrochar derived from sewage sludge by KOH activation." RSC Advances 6, no. 104 (2016): 101827–34. http://dx.doi.org/10.1039/c6ra22327c.
Full textAbstract:
Hydrochar, produced by hydrothermal carbonization of sewage sludge, adsorbs orthophosphate to improve effluent quality, recover & reutilize phosphorous and positively impact sewage sludge management.
43
Nowak, O., V. Kuehn, and M. Zessner. "Sludge management of small water and wastewater treatment plants." Water Science and Technology 48, no. 11-12 (2004): 33–41. http://dx.doi.org/10.2166/wst.2004.0797.
Full textAbstract:
“Disposal or reuse?” is the big question in respect to sewage and water sludges. This question is even more decisive for small plants, because the achievement of the advanced treatment necessary for disposal is much more difficult in small units than in big ones. The paper discusses this question with main focus on small WWTPs and gives a short overview of the specifics of sludge treatment in small units as well as of outlets for sludge from water treatment plants. In general, small WWTPs do not have a better sludge quality than larger ones, but the economic pressure to realise reuse is higher on them than on large plants.
44
Lee, D. J., L. Spinosa, P. J. He, and T. B. Chen. "Sludge production and management processes: case study in China." Water Science and Technology 54, no. 5 (2006): 189–96. http://dx.doi.org/10.2166/wst.2006.562.
Full textAbstract:
In 2010, the sewage sludge production rate will be 178,500 t dried solids (ds) for Beijing and 294,000 t-ds for Shanghai, respectively. Beijing adopts a centralized system to stabilize 78% of her sludge in three rural Stabilization Centres. Aerated composting technique will be used. Shanghai on the contrary decentralizes the management plan to treat the sludge on site. Diverse treatment trains, such as aerobic/anaerobic digestion, drying, incineration, and composting will be applied. Production rate, treatment plan, and the associated costs, energy consumption, carbon dioxide emission, and risk assessment for heavy metals and pathogens on human health were evaluated in this report for sludges yielded in Beijing and Shanghai, China.
45
Poblete, Israel Bernardo S., Ofélia de Queiroz F. Araujo, and José Luiz de Medeiros. "Sewage-Water Treatment and Sewage-Sludge Management with Power Production as Bioenergy with Carbon Capture System: A Review." Processes 10, no. 4 (2022): 788. http://dx.doi.org/10.3390/pr10040788.
Full textAbstract:
Sewage-water treatment comprehends primary, secondary, and tertiary steps to produce reusable water after removing sewage contaminants. However, a sewage-water treatment plant is typically a power and energy consumer and produces high volumes of sewage sludge mainly generated in the primary and secondary steps. The use of more efficient anaerobic digestion of sewage water with sewage sludge can produce reasonable flowrates of biogas, which is shown to be a consolidated strategy towards the energy self-sufficiency and economic feasibility of sewage-water treatment plants. Anaerobic digestion can also reduce the carbon footprint of energy sources since the biogas produced can replace fossil fuels for electricity generation. In summary, since the socio-economic importance of sewage treatment is high, this review examined works that contemplate: (i) improvements of sewage-water treatment plant bioenergy production and economic performances; (ii) the exploitation of technology alternatives for the energy self-sufficiency of sewage-water treatment plants; (iii) the implementation of new techniques for sewage-sludge management aiming at bioenergy production; and (iv) the implementation of sewage-water treatment with bioenergy production and carbon capture and storage.
46
Miłek, Dorota, Jolanta Latosińska, and Zbigniew Dyk. "Sewage sludge management – a case study." Economic and Environmental Studies 18, no. 46 (2018): 733–46. http://dx.doi.org/10.25167/ees.2018.46.16.
Full text
47
Wisniewski, Zbigniew, Józef Kuczmaszewski, Katarzyna Halicka, et al. "Critical assessment and recommendations for sewage sludge management in Poland." Economics and Environment 87, no. 4 (2024): 1–28. http://dx.doi.org/10.34659/eis.2023.87.4.641.
Full textAbstract:
The purpose of the article is to demonstrate practices used to supervise the use of sewage sludge for agricultural purposes. The presented research and conclusions are a trend analysis and are not to be used to penalise entities. Sewage sludge, which comes from the illegal dumping of wastewater into municipal wastewater by industrial plants, contains large amounts of heavy metals. Treatment plants transfer the sludge for agricultural use. Regulations specifically restrict the mode and conditions for such use of sludge. Methods: the research was carried out using a proprietary questionnaire, which is a supplement to the reporting questionnaire of the National Urban Wastewater Treatment Program implemented by the State Water Company "Wody Polskie". Results: The survey was conducted at 208 wastewater treatment plants in Poland. The results show that the majority of wastewater treatment plants do not properly supervise the process of introducing sewage sludge into the soil. They also lack supervision of how much heavy metals from wastewater are introduced into the soil. This means that there is a very high risk of contamination of agricultural soils. The results obtained could initiate a detailed analysis of this phenomenon in Poland. A comprehensive study of the scale of the practice and its current effects is required to determine the actual condition of soil treated with sewage sludge.
48
Junio, Geraldo R. Zuba, Regynaldo A. Sampaio, Luiz A. Fernandes, et al. "Content of Heavy Metals in Soil and in Pineapple Fertilized With Sewage Sludge." Journal of Agricultural Science 11, no. 9 (2019): 281. http://dx.doi.org/10.5539/jas.v11n9p281.
Full textAbstract:
The usage of sewage sludge in agriculture can increase the levels of heavy metals in the soil, compromising their use as fertilizer. The objective of this study was to evaluate the contamination of soil and pineapple by heavy metals after the application of treated sewage sludge by different forms in three orders of soils under greenhouse conditions. The treatments, in a factorial scheme 7 × 3 were distributed in a randomized complete block design with three replications, corresponding to seven fertilization management: soil without fertilization, chemical fertilization, fertilization with composted sludge sewage, fertilization with vermicompost sewage sludge, fertilization with solarized sewage sludge, fertilization as sewage sludge dried in a Bruthus-Albrecht rotary sludge dryer and fertilization with limed sludge sewage, combined with three orders of soils: Cambisol, Nitisol and Acrisol. The Zn, Cu, Cr, Pb, Ba, Cd, Ni, As and Se contents were analyzed in the soil, in the leaf of greater length (D leaf) and in the fruit pulp of the pineapple. The Acrisol provided more favorable conditions to the increase in the availability and absorption of Pb and As by D leaf and fruit of the pineapple. Fertilization with composted, vermicompost and solarized sewage sludge provided high levels of Pb, As, Zn in leaf D and in the pineapple fruit, relating the interference of sludge stabilization process with the absorption of metals by pineapple fruits.
49
Lee, D. J., and J. C. Liu. "Route to synthesize the sludge management processes." Water Science and Technology 49, no. 10 (2004): 259–66. http://dx.doi.org/10.2166/wst.2004.0658.
Full text
50
Wójcik, Marta, Feliks Stachowicz, and Adam Masłoń. "Sewage sludge conditioning with the application of ash from biomass-fired power plant." E3S Web of Conferences 30 (2018): 03005. http://dx.doi.org/10.1051/e3sconf/20183003005.
Full textAbstract:
During biomass combustion, there are formed combustion products. Available data indicates that only 29.1 % of biomass ashes were recycled in Poland in 2013. Chemical composition and sorptive properties of ashes enable their application in the sewage sludge treatment. This paper analyses the impact of ashes from biomass-combustion power plant on sewage sludge dewatering and higienisation. The results obtained in laboratory tests proved the possitive impact of biomass ashes on sewage sludge hydration reduction after dewatering and the increase of filtrate volume. After sludge conditioning with the use of biomass combustion by-products, the final moisture content decreased by approximatelly 10÷25 % in comparison with raw sewage sludge depending on the method of dewatering. The application of biomass combustion products in sewage sludge management could provide an alternative method of their utilization according to law and environmental requirements.