Relevant bibliographies by topics / Mechanical-biological wastewater treatment plant

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Academic literature on the topic 'Mechanical-biological wastewater treatment plant'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 February 2022

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Journal articles on the topic "Mechanical-biological wastewater treatment plant"

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Płuciennik-Koropczuk, Ewelina, Anita Jakubaszek, Sylwia Myszograj, and Sylwia Uszakiewicz. "Cod Fractions In Mechanical-Biological Wastewater Treatment Plant." Civil And Environmental Engineering Reports 24, no. 1 (March 28, 2017): 207–17. http://dx.doi.org/10.1515/ceer-2017-0015.

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Abstract The paper presents results of studies concerning the designation of COD fraction in the raw, mechanically treated and biologically treated wastewater. The test object was a wastewater treatment plant with the output of over 20,000 PE. The results were compared with data received in the ASM models. During investigation following fractions of COD were determined: dissolved non-biodegradable SI, dissolved easily biodegradable SS, in organic suspension slowly degradable XS and in organic suspension non-biodegradable XI. Methodology for determining the COD fraction was based on the guidelines ATV-A 131. The real percentage of each fraction in total COD in raw wastewater are different from data received in ASM models.
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Dracea, Dragos, Augustina Tronac, and Sebastian Mustata. "Current Trends in Biological Wastewater Treatment." “Agriculture for Life, Life for Agriculture” Conference Proceedings 1, no. 1 (July 1, 2018): 373–76. http://dx.doi.org/10.2478/alife-2018-0055.

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Abstract Waste water treatment plants are complex systems consisting of construction, hydro-mechanical, electrical, monitoring and automation equipment. Monitoring activities emphasize that the processes are dynamic; wastewater quality at the entering point of treatment plant varies in a wide range. Treatment technologies adopted must reduce major pollutants; that involves nitrification-denitrification processes and biological and chemical reduction of phosphorus through mechanical-chemical-biological treatment pathways. Increasing the activated sludge concentration in a wastewater treatment plant is an effective method by altering the process dynamics and by reducing the produced sludge volume. There are proposed and discussed in terms of technical and cost efficiency different technological wastewater treatment schemes. In Romania, wastewater treatment plants and sewage systems operating involve processes based on the new systems overrated, there is mandatory to diminish quantities in water supply systems and to exclude improperly working of wastewater pre-treatment stations. Those operations impose technological measures ensuring efficient functioning regardless the service conditions.
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la Cour Jansen, Jes, Bodil Mose Pedersen, and Erik Moldt. "Evaluation of Small Wastewater Treatment Plants in the County of Århus – Denmark." Water Science and Technology 28, no. 10 (November 1, 1993): 33–41. http://dx.doi.org/10.2166/wst.1993.0201.

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Influent and effluent data from about 120 small wastewater treatment plants (100 - 2000 PE) have been collected and processed. Seven different types of plants are represented. The effluent quality and the treatment efficiency have been evaluated. The most common type of plant is mechanical/biological treatment plants. Some of them are nitrifying and some are also extended for chemical precipitation of phosphorus. Constructed wetlands and biological sandfilters are also represented among the small wastewater treatment plants.
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BELYaKOV, A. V. "RESEARCH OF OIL REFINING PLANT WASTEWATER’S ONE-STAGE BIOLOGICAL TREATMENT." Urban construction and architecture 3, no. 4 (December 15, 2013): 24–27. http://dx.doi.org/10.17673/vestnik.2013.04.4.

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The article reports on the research results of wastewaters biological treatment at Novokuibyshevsk oil refining plant using the technology of nitrification - denitrification. The paper reveals the possibility of meeting modern requirements for treated water quality by nitrogen compounds while treating industrial wastewater without mixing it with municipal wastewater. Necessary dependencies and technological parameters for choosing the mode of experimental and production use of treatment structures by one-stage scheme with nitrification-denitrification are given.
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Feofanov, Ju A. "BIOLOGICAL TREATMENT OF WASTE PAPER RECYCLING PLANT WASTEWATER." Water and Ecology 25, no. 3 (2020): 14–21. http://dx.doi.org/10.23968/2305-3488.2020.25.3.14-21.

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Introduction. Among characteristic features of waste paper recycling plant wastewater, the following can be distinguished: significant fluctuations in consumption and composition, high content of undissolved and dissolved substances (in particular, starch, fiber, dispersed thermoplastic and other substances). Local wastewater treatment can reduce the concentration of undissolved and — partially — dissolved contaminants. Besides, it makes it possible to reuse valuable substances and treated water in production. However, a significant amount of dissolved contaminants is dumped by factories at off-site biological treatment plants. In this case, bioreactors with suspended activated sludge (aeration tanks) as well as bioreactors with attached biomass are used for wastewater treatment. Methods. The purpose of the study was to determine the consumption and composition of wastewater discharged by waste paper recycling plants, as well as the technological parameters and performance of biological treatment facilities, including a moving bed biofilm reactor and aeration tanks. In-process control over the operation of treatment plants was carried out by means of instrumental measurements and laboratory analyses conducted according to standard methods. Results. The article examines the results of the operation of biological wastewater treatment facilities used to treat wastewater from a paper mill, where different grades of waste paper are used as raw materials. The main characteristics of biological wastewater treatment facilities’ operation have been identified. Relationships between the oxidation capacity and the load in terms of organic pollution have been obtained for a bioreactor with a moving bed (1st stage) and aeration tanks (2nd stage of biological wastewater treatment). Measures have been proposed to improve the performance of existing treatment plants.
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Myszograj, Sylwia, and Ewelina Płuciennik-Koropczuk. "COD and nitrogen compounds balance in mechanical-biological wastewater treatment plant with sludge treatment." DESALINATION AND WATER TREATMENT 186 (2020): 443–49. http://dx.doi.org/10.5004/dwt.2020.25629.

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Zoric, Jelena, V. Simic, and Ana Petrovic. "On the possibility of using biological toxicity tests to monitor the work of wastewater treatment plants." Archives of Biological Sciences 60, no. 3 (2008): 431–36. http://dx.doi.org/10.2298/abs0803431z.

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The aim of this study was to ascertain the possibility of using biological toxicity tests to monitor influent and effluent wastewaters of wastewater treatment plants. The information obtained through these tests is used to prevent toxic pollutants from entering wastewater treatment plants and discharge of toxic pollutants into the recipient. Samples of wastewaters from the wastewater treatment plants of Kragujevac and Gornji Milanovac, as well as from the Lepenica and Despotovica Rivers immediately before and after the influx of wastewaters from the plants, were collected between October 2004 and June 2005. Used as the test organism in these tests was the zebrafish Brachydanio rerio Hamilton - Buchanon (Cyprinidae). The acute toxicity test of 96/h duration showed that the tested samples had a slight acutely toxic effect on B. rerio, except for the sample of influent wastewater into the Cvetojevac wastewater treatment plant, which had moderately acute toxicity, indicating that such water should be prevented from entering the system in order to eliminate its detrimental effect on the purification process.
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Kriš, J., M. Galík, V. Kvassay, and G. Ivanič. "Sludge disposal and wastewater treatment in the region of Bratislava." Water Practice and Technology 8, no. 2 (June 1, 2013): 286–303. http://dx.doi.org/10.2166/wpt.2013.030.

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In the process of wastewater treatment there are generated products that wastewater treatment plant operators want to eliminate. The most important product – waste generated in mechanical-biological treatment of wastewater – is sludge. Bratislava Water Company (BVS) operates three wastewater treatment plants (WWTP) with different mechanical-biological treatment technologies in the region of the Slovak capital. The total capacity of these WWTP is 1,515,000 population equivalent (p.e.). The WWTP serve the needs of about 557,000 p.e. who produce about 140,000 m3/day of wastewater. Annual production of mechanically dewatered anaerobically stabilized sludge is about 560,000 tons. At present, the biogas obtained from sludge is used for bioenergy production. The resulting thermal energy is used for technological purposes such as heating of operating premises and sludge digestion tanks. The obtained sludge is further recovered as a component in production of industrial compost or it can also be used for direct application to agricultural or forest land (if appropriate composition).
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Шевченко, Ольга Алексеевна, Віталій Анатолійович Крупко, Леонід Миколайович Клінцов, and Інна Миколаївна Іванова. "Modeling of biological wastewater treatment plant efficiency." Eastern-European Journal of Enterprise Technologies 5, no. 10(71) (October 15, 2014): 16. http://dx.doi.org/10.15587/1729-4061.2014.27554.

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Egamberdiev, N. B., Zilola Sharipjonova, Bobur Nasibov, A. O. Khomidov, M. I. Alimova, and A. A. Abdumalikov. "Biological treatment of industrial and domestic wastewater of a brewery in Uzbekistan." E3S Web of Conferences 264 (2021): 01055. http://dx.doi.org/10.1051/e3sconf/202126401055.

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During the period of water shortage in the Republic, modern resource-saving irrigation methods and the use of purified and industrial waters and their reuse in irrigation is an urgent problem in ecology. Among the methods for treating industrial wastewater in a cheaper, cost effective way is the biological treatment method. It is the study of the effectiveness of biological treatment of industrial wastewater from primary winemaking using selected strains of aquatic plants (pistia). The object of wastewater research is selecting a Pistia algae strain, carrying out biochemical, hydrochemical analyses of wastewater before and after treatment, and the chemical composition of the Pistia algae biomass. All studies were carried out according to the standard studies of UzGOST for waste and drinking water and algological methods used by the Institute of Botany of ANRUz, State Enterprise "Institute GIDROINGEO", etc. The efficiency of biological purification of wastewaters of primary winemaking by higher aquatic plants of the pistia was established. With the help of the research carried out, the wastewater treatment of the food plant, in particular, the Kibray wine station with the Pistia algae, was established: the optimal parameters of growth, development and purification capacity of pistia algae were established for various variants of experiments and wastewater samples; designed and assembled a semi-industrial plant for biological wastewater treatment of the Kibray wine station and carried out work on industrial wastewater treatment. Wastewater from the Kibray wine station contains organic compounds, namely yeast sediments, proteins, fats, carbohydrates, fiber, which are food for Pistia algae. Pistia biomass obtained after cultivation in wastewater after sterilization can be used as feed in livestock and poultry farming, as it contains a large number of proteins, fats and carbohydrates.
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Dissertations / Theses on the topic "Mechanical-biological wastewater treatment plant"

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Li, Wen. "Improvement of Biological Processes of Inland Municipal Wastewater Treatment Plant." Thesis, KTH, Mark- och vattenteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-190742.

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This master thesis gives an account for various aeration schemes that are utilized in conventional activated sludge treatment process in a wastewater treatment plant. By altering between different aeration schemes, the project aimed at reducing energy consumption along with maintaining the treatment performance at the plant. A series of experiments on the treatment performance over several different aeration schemes thus has been conducted on site at Solviken in Mora, Sweden. The project is basically a case study where no parameters were manually controlled except for the aeration schemes at the plant. Energy consumption reduction is logically relative to the ratio between aeration and non-aeration intervals. Several criteria were tested in regards to the treatment performance, including pH value, organic matters, phosphorus substances and microorganisms. The study has come up with a superior aeration scheme for the plant, as well as indicated processes that can be improved at the plant.
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Buck, Andrew. "Characterisation of chemical processes operating within a biological wastewater treatment plant." Thesis, Open University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.409874.

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Graan, Daniel, and Rasmus Bäckman. "Energy recovery at Chişinȃu wastewater treatment plant." Thesis, University of Skövde, School of Technology and Society, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-4080.

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Possibilities for energy recovery from sludge at Chişinȃu wastewater treatment plant have been investigated and evaluated. One way of recovering energy from sludge is to produce biogas through anaerobic digestion. Which method of biogas usage that is to prefer in Chişinȃu has been evaluated from a cost-efficiency point of view. There is a possibility that a new waste incineration plant will be built next to the wastewater treatment plant, and therefore solutions that benefit from a co-operation have been discussed. The results show that biogas production would be suitable and profitable in a long time perspective if the gas is used for combined heat and power production. Though, the rather high, economical interest rates in Moldova are an obstacle for profitability.

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Litteken, Garrett Michael. "IMPACT OF WATER TREATMENT PLANT ALUM SLUDGE RESIDUALS ON WASTEWATER TREATMENT PLANT BIOLOGICAL PROCESSES: A CASE STUDY." OpenSIUC, 2017. https://opensiuc.lib.siu.edu/theses/2246.

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Water treatment plant (WTP) residual discharge is considered a pollutant and requires treatment to prevent negative impacts when released to the environment. As regulatory requirement becomes increasingly strict, WTPs are required to find suitable methods for the treatment of sludge residuals. Wastewater treatment plants(WWTP) provide existing treatment methods to remove contaminants from WTP residuals. A case study on the Carbondale Water Treatment Plant (CWTP) and receiving Carbondale Southeast Waste Water Treatment Plant (SEWWTP) provided an opportunity to quantify potential negative impacts for the discharge of residual alum sludge to a biologic sludge digestion plant. The first part of the study focused on quantifying changes to the SEWWTP loading conditions from the addition of metal salt coagulant water treatment residuals discharged by the CWTP. Historic sludge quantities and treatment methodologies for both the CWTP and SEWWTP were used to predict loading conditions and residual concentrations at the SEWWTP. Ammonia, BOD, pH, and TSS concentrations from the CWTP were not identified to significantly impact the existing concentrations at the SEWWTP. Metals concentrations from the CWTP were also found to fall within WWTP regulatory quantities. The second part of the study evaluated potential impacts to beneficial bacteria populations in the SEWWTP oxidation ditch from the receipt of CWTP alum residuals. Studies of residual alum sludge impacts to beneficial bacterial populations are rare, and often do not translate from one treatment plants processes to the next. The SEWWTP employs a multi-ring oxidation ditch with an anoxic outer ring and aerobic middle and inner rings. Biologic Activity Reaction Tests (BART) were used to isolate beneficial bacteria species typically present in oxidation ditches including heterotrophic aerobic bacteria, denitrifying bacteria, and nitrifying bacteria. Heterotrophic aerobic bacteria and denitrifying bacteria are the predominant beneficial bacteria species in the outer ring, while nitrifying bacteria and heterotrophic aerobic bacteria dominate the aerobic inner rings. Heterotrophic aerobic bacteria and denitrifying bacteria populations identified in the outer ring of the oxidation ditch did not demonstrate any population impacts from the receipt of residual alum sludge. In addition, nitrifying bacteria populations and heterotrophic aerobic bacteria population demonstrated no impacts from the introduction of CWTP residual alum waste to the aerobic inner ring of the oxidation ditch. Overall, the study demonstrated the treatment of residual alum sludge from a WTP is possible through the existing biological processes at a WWTP.
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Basu, Pradipta Ranjan. "Evaluation of biological treatment for the degradation of petroleum hydrocarbons in a wastewater treatment plant." Texas A&M University, 2005. http://hdl.handle.net/1969.1/2418.

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Biodegradation of petroleum hydrocarbon can be an effective treatment method applied to control oil pollution in both fresh water and marine environments. Hydrocarbon degraders, both indigenous and exogenous, are responsible for utilizing petroleum hydrocarbon as their substrate for growth and energy, thereby degrading them. Biodegradation of hydrocarbons is often enhanced by bioaugmentation and biostimulation depending on the contaminated environment and the competence of the hydrocarbon degraders present. An evaluation of the performance of the biological treatment of petroleum hydrocarbon by the hydrocarbon degrading microbes at the Brayton Fire School??s 4 million gallon per day (MGD) wastewater treatment plant was the main research objective. Samples were taken for two seasons, winter (Nov 03 ?? Jan 03) and summer (Jun 04 ?? Aug 04), from each of the four treatment units: the inlet tank, equalization tank, aeration tank and the outfall tank. The population of aliphatic hydrocarbon degraders were enumerated and nutrient availability in the system were used to evaluate the effectiveness of on-going bioaugmentation and biostimulation. Monitoring of general effluent parameters was conducted to evaluate the treatment plant??s removal efficiency and to determine if effluent discharge was in compliance with the TCEQ permit. The aeration tank is an activated sludge system with no recycling. Hydrocarbon degraders are supplied at a constant rate with additional nutrient supplement. There was a significant decrease in the population of microbes that was originally fed to the system and the quantity resident in the aeration tank. Nutrient levels in the aeration tank were insufficient for the concentration of hydrocarbon degraders, even after the application of dog food as a biostimulant. The use of dog food is not recommended as a nutrient supplement. Adding dog food increases the nitrogen and phosphorus concentration in the aeration tank but the amount of carbon being added with the dog food increases the total chemical oxygen demand (COD) and biochemical oxygen demand (BOD). An increase in the concentration of total COD and BOD further increases the nitrogen and phosphorus requirement in the system. The main objective of supplying adequate nutrients to the hydrocarbon degraders would never be achieved as there would be an additional demand of nutrients to degrade the added carbon source. This research study was conducted to identify the drawbacks in the treatment plant which needs further investigation to improve efficiency.
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Mosca, Denise Michele. "Nitrification and denitrification : biological nitrogen removal and sludge generation at the York River treatment plant /." Thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-01102009-063031/.

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Mbaya, Andre MK. "Impact of urine diversion on Biological Nutrients Removal Activated Sludge Wastewater Treatment Plant (BNRAS WWTP)." Master's thesis, University of Cape Town, 2011. http://hdl.handle.net/11427/10579.

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This experimental investigation was started to study the impacts urine separated WW [Wastewater] can have on BNRAS WWTPs [Biological Nutrient Removal Activated Sludge Wastewater Treatment Plants] with a UCT and a JHB configuration.
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Frisk, Daniel, and Deniz Pektas. "Survey of systems for utilizing produced biogas in asmall-scale wastewater treatment plant: Storvreta, Uppsala." Thesis, KTH, Energiteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-245226.

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Den här rapporten ämnar att ge en analys över energibehovet av ett mindre reningsverk samt hur utnyttjandet av den biogas som produceras vid reningen kan ökas. Energi-analysen kommer att inbegripa reningsverkets värme- och elbehov i nuläget samt hur hur det kan komma att utvecklas inom den närliggande framtiden. Energi-analysen kommer ligga till grund för vilken teknisk lösning som bäst lämpar sig för reningsverkets användning av dess producerade biogas.  Reningsverket som har blivit undersökt i rapporten är Storvretas reningsverk som ligger strax utanför Uppsala. Storvreta producerar idag cirka 73 800 Nm3 biogas. Reningsverket förbränner i nuläget biogasen i en värmepanna som värmer reningsverkets lokaler, samt till uppvärmning av slam till rötkammaren för att bibehålla dess temperatur. Den gaspanna som i nuläget används är underdimensionerad och kan ej förbränna biogas i samma takt som den produceras, den överblivna gasen facklas bort. För att täcka reningsverkets resterande värmebehov används även en värmepanna som körs på el (Uppsala Vatten och Avfall AB 2016, 13-14). De tekniska lösningar som undersöks i rapporten ligger inom de ekonomiska gränser som förutsätts av produktionskapaciteten för biogas i Storvretas reningsverk, då produktionen av biogas starkt styr de ekonomiska medel som finns att tillgå. Således begränsas de tekniker som kan användas för att ta tillvara på biogasen. De tekniska lösningar som har undersökts i rapporten är:  ● Förbränning av gasen i olika motorer för att täcka det egna värmebehovet samt till att producera el. ● En värmepanna med högre effekt som minskar användandet av el-värmepannan samt ger en möjlighet att sälja värme till fjärrvärmenätet. ● Rågas försäljning till en uppgraderingsanläggning via ett rågasnät ● En uppgraderingsmodul på plats kombinerat med ett mobilt högtryckslager. I den ekonomiska analysen gav resultatet att systemet med förbränning av gasen i en ny gaspanna med högre effekt  för att täcka det egna värmebehovet har störst lönsamhet, till störst del genom att användningen av elpannan minskas. Vid en ny investering i en gaspanna bör en större gaspanna väljas för den marginella skillnaden i investering men att det ger en möjlighet att sälja överskottsvärme till fjärrvärmenätet. Alternativet med en uppgraderingsanläggning kan vara lönsamt ifall avsättning finns för den uppgraderade gasen och att det måste säkerhetsställas innan systemet tas i drift. Produktionskapaciteten på Storvreta reningsverk är för liten för att kraftvärmesystem eller gasledning ska vara ekonomiskt hållbara utan de systemen gynnas av större produktion av biogas.
This report aims to carry out an analysis of the energy requirements of a small wastewater treatment plant and how the utilization of the biogas produced can be increased. The energy analysis will include the treatment plant's heat and electricity needs at present and how the needs will develop in the near future. The energy analysis will form the basis for which technical solution best suits the purge plant's use of its biogas production. The wastewater treatment plant which has been investigated in the report is Storvreta’s wastewater treatment plant, located just outside Uppsala, Sweden. Storvreta today produces approximately 73 800 Nm3 biogas.The treatment plant is currently burning the biogas in a gas combustion boiler that warms the treatment plant's premises, as well as heating the sludge to the digestion chamber to maintain its temperature. The gas boiler currently in use is under-dimensioned and can not burn biogas at the same rate as it is produced, the leftover gas is discarded. In order to cover the wastewater treatment plant's remaining heat demand a electric boiler is used (Uppsala Vatten och Avfall AB 2016, 13-14). The technical solutions investigated in the report are within the economic limits required by biogas production capacity in Storvreta's purification plant, as the production of biogas strongly controls the financial resources available. Thus, the techniques that can be used to utilize the biogas are limited. The technical solutions investigated in the report are: ● Combustion of the gas in different engines to cover the heat demand of the plant and to produce electricity. ● A boiler that have a higher output that reduces the use of the electric boiler and provides an opportunity to sell heat to the district heating system. ● Raw gas sales to an upgrade facility via a raw gas piping. ● An on-site upgrade module combined with a mobile high-pressure storage and sell gas as a vehicle gas. In the economic analysis, the result was that the system of combustion of gas in a new boiler with a higher output to cover the plants own needs of heat has the greatest profitability, mostly because of the reduced usage of the electric boiler. In the case of a new investment in a gas boiler, a larger gas boiler should be chosen. Although there is a marginal difference in investment, it provides an opportunity to sell excess heat to the district heating system. The option of an upgrade facility can be profitable if there is demand for the upgraded gas and the demand must be secured before the system is put into operation. The production capacity of the Storvreta wastewater treatment plant is too small for Combined heat and power systems or gas pipelines to be economically sustainable, due to these systems benefiting from larger production of biogas.
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Marcin, Richard, and Matej Mucha. "THEORETICAL STUDY TO IMPROVE THE ENERGY BALANCE IN WASTEWATER TREATMENT PLANT : Investigation of microalgae photobioreactor in biological treatment step and open algal pond in reject water treatment in Uppsala and Västerås." Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-29917.

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The self-treatment system of nature cannot handle man-caused high rate water pollution on its own, therefore cleaning in wastewater treatment plant (WWTP) is necessary to avoid eutrophication – excessive enrichment of nature by nutrients. Current technologies applied in WWTPs are old, outdating and highly energy demanding, especially biological treatment step generally requires large amount of energy for aeration of water. The alternative to current system could be microalgae treatment step, which would use green algae to consume pollutants present in the waste water, namely nitrogen, phosphorus and heavy metals. Via photosynthesis it could produce oxygen required for biological oxidation of organic matter. Furthermore carbon source is necessary for microalgal growth, this can be added to the water as CO2 produced in other industries and so decrease global greenhouse gas footprint. Co-digestion of microalgae with undigested wastewater sludge under mesophilic conditions can give a synergic effect for biogas production, therefore harvested and co-digested microalgae could contribute to positive energy balance of WWTP. Full-scale microalgae cultivation in WWTP can be achieved only when good grow is guaranteed. This is a result of many factors, particularly access to nutrients, light condition, water temperature, and pH. The goal of master’s thesis was to understand and evaluate main factors influencing algal growth using literature review, propose design of microalgae treatment step with artificial lights and evaluate energy balance, of wastewater treatment plants in Uppsala and Västerås with new design. The work proposed two different designs of microalgae treatment steps, modelled in Excel and applied to current state of municipal WWTP in Västerås and Uppsala with belonging satellite plants. The first design of microalgae activated photobioreactor (MAASPBR) aimed to replace current biological treatment step. This is possible in Västerås and Uppsala WWTPs if microalgae can consume 75% of total nitrogen (Ntot) and produce at least 13.5 and 2.4 tonne O2/day in Västerås and Uppsala respectively. The sensitivity analysis showed that minimal volumetric algal yield of 0.15 kg/m3 ,day and 0.25 kg/m3 ,day is required for Västerås and Uppsala respectively, when oxygen production rate of 1.92 kg O2/kg microalgae is assumed. Furthermore harvested and co-digested algae with sewage sludge contributes to significant increase of biogas production and negligible transportation energy increase. The second design of open algal pond for reject water (OAPRW) aims to cultivate microalgae on reject water with high concentration of nutrients, generated in sludge centrifuge. The model assumed high algal growth due to excessive amount of nutrients and increased water temperature to 24°C. Results show a possible 23% and 20% electricity saving on blowers in the biological treatment in Västerås and Uppsala respectively. Both models have positive impact on energy balance in all WWTPs, however MAASPBR has greater uncertainties, because this type of photobioreactor has not been tested unlike OAPRW which has been tested in pilot plant scale.
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Guinn, Richard J. (Richard Joe). "Biological and Toxicological Responses Resulting from Dechlorination of a Major Municipal Wastewater Treatment Plant Discharge to the Trinity River." Thesis, University of North Texas, 1995. https://digital.library.unt.edu/ark:/67531/metadc279074/.

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Federal regulations such as the Clean Water Act (P.L. 92-500), and its amendments, direct the Environment Protection Agency (EPA) to implement programs to control the releases of conventional pollutants and toxics into the waterways of the United States. The EPA began requiring treatment plants to conduct toxicity tests (biomonitoring) of their effluent discharges. To control toxicity caused by chlorination of wastewater discharges, the EPA also began requiring some treatment facilities to dechlorinate their wastewater before discharging. This research was funded by the EPA to document the changes that occurred in the Trinity River from the dechlorination of the effluent from Ft. Worth's Village Creek municipal wastewater treatment plant. The study occurred over a two year period beginning in August 1990. A wide variety of biological field assessments and toxicological assays were used to measure various responses. Seven river stations, covering approximately twenty river miles, and the treatment plant effluent were assessed. Two of the river stations were upstream from the treatment plant and used as reference sites. The remaining five river stations were downstream from the treatment plant, spread out over seventeen river miles. The study evaluated the impact of chlorination prior to dechlorination, which served as a baseline. Responses determined during dechlorination were compared to the baseline data. An overall improvement in species richness and diversity was seen at those river stations which had previously been adversely impacted by chlorine. Aquatic toxicity tests, such as those required to be used by dischargers, were conducted during this study. Periodic toxicity was observed with these tests in the effluent and river samples after dechlorination was initiated. Those tests, along with in situ toxicity assays, proved to be good predictors of biological community responses.
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Books on the topic "Mechanical-biological wastewater treatment plant"

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Piotrowski, Robert. Hierarchiczne sterowanie predykcyjne stężeniem tlenu w reaktorze biologicznej oczyszczalni ścieków: Hierarchical predictive control of dissolved oxygen in biological wastewater treatment plant. Gdańsk: Politechnika Gdańska, 2011.

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Abbasi, S. A. Wastewater treatment with aquatic plants. Roorkee: INCOH Secretariat, 1995.

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Basic mechanical maintenance procedures at water and wastewater plants. Chelsea, MI: Lewis Publishers, 1991.

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Lukanin, Aleksandr. Engineering ecology: processes and devices sewage treatment and recycling of precipitation. ru: INFRA-M Academic Publishing LLC., 2017. http://dx.doi.org/10.12737/22139.

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The book describes the composition and properties of wastewater, shows the main methods of sewage treatment, the basic techniques of sludge treatment, as well as hardware design of these processes. Also in the manual covers the methods, processes and devices for mechanical and biological wastewater treatment, as well as processing and recycling of sludge, are the methods of calculations related equipment. Compliant with the Federal state educational standard of the latest generation of higher education. The publication is intended for students directions "Technosphere safety" (20.03.01, 20.04.01), "Ecology and Nature" (05.03.06, 05.04.06), as well as the "Industrial Ecology and Biotechnology» (19.00.00). Also, the benefit will be useful to professionals working in the field of environmental engineering.
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T, Webb Richard M., Puerto Rico Aqueduct and Sewer Authority., and Geological Survey (U.S.), eds. Assessment of the habitats, biota, sediments, and water quality near the discharge of primary-treated effluent from the Mayagüez Regional Wastewater Treatment Plant, Bahía de Añasco, Puerto Rico. San Juan, P.R: U.S. Dept. of the Interior, U.S. Geological Survey, 2000.

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M, Henze, ed. Wastewater treatment: Biological and chemical processes. Berlin: Springer-Verlag, 1995.

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Benefield, Larry D. Biological process design for wastewater treatment. Ibis Publishing, 1993.

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Ltd, Canviro Consultants, Norbert W. Schmidtke & Associates., David I. Jenkins and Assoc., and Canada. Environmental Protection Programs Directorate., eds. Retrofitting municipal wastewater treatment plants for enhanced biological phosphorus removal. [Toronto]: Minister of Supply and Services Canada, 1986.

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1952-, Tyagi R. D., and Vembu Kannan, eds. Wastewater treatment by immobilized cells. Boca Raton: CRC Press, 1990.

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W, Randall Clifford, Barnard James L, and Stensel H. David, eds. Design and retrofit of wastewater treatment plants for biological nutrient removal. Lancaster, Pa: Technomic Pub. Co., 1992.

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Book chapters on the topic "Mechanical-biological wastewater treatment plant"

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Herva, Juhani, and Eero Meskus. "Upgrading the Chemical Precipitation Process Using a Fixed Film Biological Reactor: A Case Study of the Taskila Plant of Oulu, Finland." In Chemical Water and Wastewater Treatment V, 255–65. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-72279-0_21.

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Kumar, Vineet, Ram Chandra, Indu Shekhar Thakur, Gaurav Saxena, and Maulin P. Shah. "Recent Advances in Physicochemical and Biological Treatment Approaches for Distillery Wastewater." In Combined Application of Physico-Chemical & Microbiological Processes for Industrial Effluent Treatment Plant, 79–118. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-0497-6_6.

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Piotrowski, Robert, and Tomasz Ujazdowski. "Model of Aeration System at Biological Wastewater Treatment Plant for Control Design Purposes." In Advances in Intelligent Systems and Computing, 349–59. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-50936-1_30.

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Ying, Wei-chi, Wei Zhang, and Yung-Tse Hung. "Fenton Oxidation and Biological Activated Carbon Treatment for Recycling Biotreated Coking Plant Wastewater." In Integrated Natural Resources Research, 1–28. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-61002-9_1.

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Brepols, C., T. Engels, and H. Schäfer. "Improved Biological Nutrient Removal and Reduced Energy Consumption at a Retrofitted Wastewater Treatment Plant." In Lecture Notes in Civil Engineering, 628–32. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-58421-8_98.

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Martín-Sánchez, Juan M., and José Rodellar. "Application of ADEX COP V.1 to the Biological Process of a Wastewater Treatment Plant." In ADEX Optimized Adaptive Controllers and Systems, 299–328. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09794-7_12.

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Xu, Juan, and Guoping Sheng. "Spectral Approach to Binding Between Metals and Dissolved Organic Matter from a Biological Wastewater Treatment Plant." In Functions of Natural Organic Matter in Changing Environment, 949–52. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-5634-2_174.

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Henze, Mogens. "Plants for Biological Phosphorus Removal." In Wastewater Treatment, 285–97. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-04806-1_8.

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Henze, Mogens. "Plants for Biological Phosphorus Removal." In Wastewater Treatment, 273–84. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-662-22605-6_8.

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Akunna, Joseph C. "Biological Treatment Processes." In Anaerobic Waste-Wastewater Treatment and Biogas Plants, 1–22. First edition. | Boca Raton, FL : CRC Press/Taylor & Francis Group, [2018] | “A CRC title, part of the Taylor & Francis imprint, a member of the Taylor & Francis Group, the academic division of T&F Informa plc.”: CRC Press, 2018. http://dx.doi.org/10.1201/9781351170529-1.

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Conference papers on the topic "Mechanical-biological wastewater treatment plant"

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Ashby, Jim, and Tony Sobkowicz. "Field Testing Improves Citrus Plant Biological Treatment." In ASME 2002 Citrus Engineering Conference. American Society of Mechanical Engineers, 2002. http://dx.doi.org/10.1115/cec2002-4804.

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Wastewater from citrus processing contains high levels of sugars, suspended solids, and caustic cleaning agents. Biological treatment is the only economical process for removing and neutralizing all of these contaminants, and the activated sludge process is the workhorse of the biological treatment stable. The biological treatment system must produce a treated effluent of the highest quality, regardless of the wild variation in flow and composition of the influent. Problems in the treatment process can almost always be traced to either a wastewater loading that is higher than the system can tolerate, or a failure to maintain and operate the treatment system to realize its treatment potential. A thorough review of the operational and loading characteristics of the system will determine whether excessive loading or inadequate treatment system is responsible for the system failure. When the problem has been identified, it can be resolved in one of three ways: □ A new treatment system of greater capacity can be installed to replace the inadequate system. □ The wastewater loading, hydraulic and organic, can be reduced through changes in fruit processing practices. □ Changes in the existing treatment system (equipment or operational) can be identified to increase its capacity. Paper published with permission.
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Lijie Zhao, Tianyou Chai, and Qiumei Cong. "Hybrid Dynamic Model of Anoxic-Aeration Biological Wastewater Treatment Plant." In 2006 6th World Congress on Intelligent Control and Automation. IEEE, 2006. http://dx.doi.org/10.1109/wcica.2006.1713291.

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Douville, Chris, and Jordan Macknick. "Energy Usage and Management at a Large Wastewater Treatment Facility in Boulder, Colorado." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-65994.

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Wastewater treatment plants require substantial amounts of energy for pumping and treating water as well as for other plant operations. National and regional policy changes resulting in stricter water quality standards could result in an increase in energy requirements for treatment, as further treatment or more energy intensive technologies would be required. Given rises in energy costs, effective energy management plans are necessary for municipal wastewater treatment plants. Energy usage in wastewater treatment plants can be reduced through a number of different technology options without compromising water quality output. These different technology options vary in effectiveness, energy intensity, and upfront and operational costs, and the choice of technologies is often dependent upon local conditions and plant specific characteristics. Energy management can be improved also through electricity production on-site from the capture of methane gases released during treatment or from the inclusion of renewable electricity generating technologies. These technology options augment the creation of energy on-site while not necessarily reducing total energy demands. The objective of this paper is to, through use of a case study of a wastewater treatment facility in Boulder, Colorado, describe the most energy intensive processes of wastewater treatment, review various technology options for these processes, and discuss the opportunities and barriers to improving energy management at wastewater treatment plants. This paper is part of a topical session entitled “An Energy Appetite of U.S. Water Systems — what does it take to supply our water?”
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GONZÁLEZ VALENCIA, JOSÉ GUADALUPE, JULIO CÉSAR ORANTES ÁVALOS, and ADRIANA FLORES RAMÍREZ. "REDUCTION OF THE PRODUCTION OF BIOLOGICAL SLUDGE IN A WASTEWATER TREATMENT PLANT." In 38th IAHR World Congress. The International Association for Hydro-Environment Engineering and Research (IAHR), 2019. http://dx.doi.org/10.3850/38wc092019-0776x.

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Maria, G., C. Maria, R. Salcedo, and S. Feyo de Azevedo. "Optimal monitoring and risk limits for a wastewater biological treatment serial plant." In 2001 European Control Conference (ECC). IEEE, 2001. http://dx.doi.org/10.23919/ecc.2001.7076534.

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Piotrowski, Robert, Piotr Hirsch, and Jakub Lorenc. "Comparison of algorithms for hybrid nonlinear optimization problem in biological wastewater treatment plant." In 2018 International Interdisciplinary PhD Workshop (IIPhDW). IEEE, 2018. http://dx.doi.org/10.1109/iiphdw.2018.8388242.

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Ökten, Burcu Balaban, Yaprak Arıcı Üstüner, and Anıl Aksoy. "Labor Productivity on Construction Sites: A Case Study of Biological Wastewater Treatment Plant Construction." In 4th International Conference of Contemporary Affairs in Architecture and Urbanism – Full book proceedings of ICCAUA2020, 20-21 May 2021. Alanya Hamdullah Emin Paşa University, 2021. http://dx.doi.org/10.38027/iccaua2021211n13.

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The production efficiency of labor on construction sites is an important factor for the success of projects. Skills, experience, and training are among the critical factors affecting labor productivity on construction sites. Especially in construction sites where a new construction technique is used, the teams' efficiency is affected by the learning processes. Laborers' unfamiliarity with the new technique can cause time delays and, accordingly, cost overruns. This research examines laborers' challenges in building an unfamiliar structure at construction sites through a case study. With a comprehensive literature review, interactions between laborers' learning process for new structures and construction time estimation were examined, and the case has been evaluated accordingly. It was observed that the time estimation could not be predicted during an unfamiliar construction form such as examined in the field study. This study is aimed to set an example for the construction sites where new productions take place.
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Keleman, Michael P. "Economics of Wastewater Treatment Codigestion." In ASME 2010 4th International Conference on Energy Sustainability. ASMEDC, 2010. http://dx.doi.org/10.1115/es2010-90397.

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Wastewater treatment is the method by which sewage of both residential and industrial sources is processed to promote public health and reduce environmental impacts on receiving waters. This physical and biological process generates sludge, which after being treated to reduce pathogens, is referred to as biosolids. In the US there are over 16,000 wastewater treatment plants (WWTP), and every year they produce approximately 7 million tons of biosolids according to the EPA.1 These biosolids are handled differently depending upon local conditions, but most are either buried in landfills, land applied for agriculture or incinerated. Reducing the volume of biosolids produced by each facility is desirable for improving operational efficiency since lower volumes are easier to manage and cheaper to handle and dispose. Most facilities utilize either aerobic digestion to process sludge into biosolids, but larger facilities use anaerobic digestion because this process reduces the overall volume of solids left for management. Anaerobic digestion is more complex and capital intensive, so typically only those facilities treating flows higher than 5 million gallons per day (MGD) use anaerobic digestion. Given current economic conditions and rising energy costs, however, anaerobic digestion is becoming more attractive to utility managers as they attempt to offset energy costs. The anaerobic process produces methane gas. Also called biogas, methane can be utilized not only to fire boilers for heating digesters and nearby buildings, but also to fuel internal combustion engines, microturbines or fuel cells to generate power for plant processes such as blowers in the aeration system. There is also the potential for WWTPs to obtain carbon credits for utilizing renewable energy, especially in those states with renewable portfolio standards. Because anaerobic digestion has limited application in the US, this study evaluated economic viability at plants with design flows less than 5 MGD by incorporating codigestion of food waste to improve the production of biogas for use as energy to reduce operational costs and recover capital costs.
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Wang, W. B., S. Q. Li, and Y. W. Han. "The research status and prospects of bioaugmentation and microflora in the treatment process of coke plant wastewater." In International Conference on Environmental Science and Biological Engineering. Southampton, UK: WIT Press, 2014. http://dx.doi.org/10.2495/esbe140881.

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Li, Qing-xue, Li-ying Jia, and Ping Wu. "Notice of Retraction: Occurrence and Fate of Heavy Metals in the Biological Wastewater Treatment Plant." In 2011 5th International Conference on Bioinformatics and Biomedical Engineering. IEEE, 2011. http://dx.doi.org/10.1109/icbbe.2011.5781087.

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Reports on the topic "Mechanical-biological wastewater treatment plant"

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Burrows, W. D., Elizabeth T. Paulson, and Robert P. Carnahan. Biological Treatment of Composition B Wastewaters. 3. Analysis of Performance of Holston Army Ammunition Plant Wastewater Treatment Facility, January 1985 through August 1986: Errata. Fort Belvoir, VA: Defense Technical Information Center, May 1992. http://dx.doi.org/10.21236/ada261814.

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Burton, Dennis T., and William C. Graves. Evaluation of Several Biological Monitoring Techniques for Hazard Assessment of Potentially Contaminated Wastewater and Groundwater. Volume 1. Aberdeen Proving Ground-Edgewood Area Wastewater Treatment Plant. Fort Belvoir, VA: Defense Technical Information Center, July 1992. http://dx.doi.org/10.21236/ada260734.

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