Academic literature on the topic 'Constructed wetland (CW)'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Constructed wetland (CW).'
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.
Journal articles on the topic "Constructed wetland (CW)"
1
Surabhi Singh. "Wastewater Pretreatment Methods for Constructed Wetland: A Review." International Journal for Research in Applied Sciences and Biotechnology 9, no. 3 (2022): 40–47. http://dx.doi.org/10.31033/ijrasb.9.3.8.
Full textAbstract:
The constructed wetland (CW) performance depends on constructed wetland, bed media, and vegetation variations. This study represents a descriptive review of wastewater methods for wetland construction. The wastewater generation includes dairy waste, textile waste, piggery waste, petrochemical waste, tannery waste, etc. This review summarizes constructed wetlands variations, including vegetation, efficiency removal, maintenance, and construction cost. The fundamental definition of CW is that it is an eco-friendly technique to remove the pollutants from the wastewater and is mostly used by petroleum refineries, municipalities, the drainage system of agriculture and so on. Earlier, multiple innovations in the microbiology field eventually correlated with wastewater contaminants removal techniques. This review provides a brief review of the CW key aspects, like the CW types, challenges, opportunities, applications, materials, the recent advances. It also covers the current-technical advancement evaluation report and frames the unsolved CW problems. The terminology on the performance metric demonstrates that the CW community is growing rapidly. This manuscript has also mentioned an outline of the future trends and research proposals.
2
Sunny Pathak, Sunny Pathak, and Dr B. L. Jagetiya Dr. B. L. Jagetiya. "Wastewater Treatment Using Constructed Wetland." Journal of Advances in Science and Technology 20, no. 1 (2024): 5–9. http://dx.doi.org/10.29070/fjzapc98.
Full textAbstract:
Municipal wastewater, wastewater from petroleum refineries, agricultural drainage, acid minedrainage, etc. have all benefited from the use of constructed wetlands (CW), an ecologically benignmethod for purging pollutants from wastewater. The science of microbiology has expanded at anastounding rate during the last decade. Focusing on developments in the previous three decades, thispaper provides a comprehensive assessment of important facets of CW, including its many forms, thecontaminants their removal mechanisms, degradation routes, difficulties, possibilities, materials,applications, and theory. Key unresolved issues in CW have also been framed in an effort to both foreseeand enable future progress in the area of CW. The rapidly expanding CW sector will benefit from theseguidelines, which have been created via the standardization of essential design components. In anattempt to standardize the rapidly expanding CW community, this study summarizes the present state ofthe art of CW technology assessment and offers definitions performance metric terminology.
3
Pavan, S. Kamble, and Dalvi Trupti. "Wastewater Treatment using Horizontal Subsurface Flow Constructed Wetland." International Journal of Trend in Scientific Research and Development 2, no. 1 (2017): 480–82. https://doi.org/10.31142/ijtsrd6988.
Full textAbstract:
Conventional wastewater treatment systems comprising of energy intensive and mechanized treatment components require heavy investment and entail high operating costs. Constructed wetlands are accepted as a reliable wastewater treatment technology and represent an appropriate solution for the treatment of many wastewater types. A constructed wetland is a shallow basin filled with some sort of substrate, usually soil or gravel, and planted with vegetation tolerant of saturated conditions The role of constructed wetlands as environmental barrier and as a psychological separation is especially important for indirect potable reuse, when combined with other appropriate barriers. In addition to wastewater treatment, wetlands provide additional benefits, including environmental enhancement, habitat for plants and animals and passive recreational opportunities for the community. The studied constructed wetland reduced concentrations of contaminants present in the wastewater. In this project, constructed wetland using horizontal subsurface flow is studied. Wastewater is treated in constructed wetland planted with aquatic plant Typhalatifolia. Initially wastewater is supplied to the wetland through inlet chamber. Treatment performance of a constructed wetland CW commissioned in a developing country was evaluated for removal efficiency of chemical oxygen demand COD . Pavan S. Kamble | Trupti Dalvi "Wastewater Treatment using Horizontal Subsurface Flow Constructed Wetland" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-1 , December 2017, URL: https://www.ijtsrd.com/papers/ijtsrd6988.pdf
4
Xu, QiaoLing, Li Wang, Ping Wang, XueYuan Wen, and Feng Zhang. "Clogging in Vertical Flow Constructed Wetlands: Causes for Clogging and Influence of Decontamination." Ecological Chemistry and Engineering S 29, no. 1 (2022): 65–75. http://dx.doi.org/10.2478/eces-2022-0007.
Full textAbstract:
Abstract With the continuous operation of constructed wetlands, substrate clogging is issue. In order to solve the problem, there is practical significance to understand the causes for clogging in constructed wetlands. Two pilot-scale vertical flow constructed wetlands were established, namely, CW-B and CW-C. By studying the relationship between the accumulation of different substances and the banked-up water area, it was found that the accumulation of non-filter substances and total solids was an important reason for the clogging of the substrate, and the accumulation degree of non-filter inorganic substances was more obvious than that of non-filter organic substances, and the blockage was mainly located in the 10-20 cm layer. In the vertical flow constructed wetland with river sand as the main substrate, water accumulation will occur when the content of total solid and non-filter substances exceeds 67.233 g and 101.228 g per cubic meter of substrate, respectively. Therefore, it is important to pay attention to the substrate particle size matching of 0-20 cm layer to reduce the clogging in the vertical flow constructed wetland. The clogging has little effect on chemical oxygen demand (COD) removal, but great effect on total phosphorus (TP) removal. Compared with the control wetland (CW-C), the biomass content in the CW-B with biochar increased by 334.26 nmol P/g, which can improve the removal efficiency of total nitrogen (TN) and total phosphorus (TP), but also increase the risk of clogging in the vertical flow constructed wetland. Future research should try to combine the anti-blocking research results of biochar constructed wetlands to improve the purification effect, which is of great significance to promote the sustainable development of constructed wetlands.
5
Araneda, Ignacio, Natalia Tapia, Katherine Lizama Allende, and Ignacio Vargas. "Constructed Wetland-Microbial Fuel Cells for Sustainable Greywater Treatment." Water 10, no. 7 (2018): 940. http://dx.doi.org/10.3390/w10070940.
Full textAbstract:
Greywater reuse through decentralized and low-cost treatment systems emerges as an opportunity to tackle the existing demand for water. In recent years, constructed wetlands (CW) systems and microbial fuel cells (MFCs) have emerged as attractive technologies for sustainable wastewater treatment. In this study, constructed wetland microbial fuel cells (CW-MFCs) planted with Phragmites australis were tested to evaluate the potential of combining these two systems for synthetic greywater treatment and energy recovery. Open (CW) and closed circuit (CW-MFCs) reactors were operated for 152 days to evaluate the effect of energy recovery on the removal of soluble chemical oxygen demand (sCOD), nutrients and total suspended solids (TSS). Results indicate no significant differences for sCOD and phosphate removal efficiencies. CW-MFCs and CW reactors presented sCOD removal efficiency of 91.7 ± 5.1% and 90 ± 10% and phosphate removal efficiencies of 56.3 ± 4.4% and 61.5 ± 3.5%, respectively. Nitrate removal efficiencies were higher in CW: 99.5 ± 1% versus 86.5 ± 7.1% in CW-MFCs, respectively. Energy generation reached a maximum power density of 33.52 ± 7.87 mW m−3 and 719.57 ± 67.67 mW m−3 at a poised anode potential of −150 mV vs. Ag/AgCl. Thus, our results suggest that the incorporation of MFC systems into constructed wetlands does allow energy recovery while providing effective greywater treatment.
6
Spieles, Douglas J. "Wetland Construction, Restoration, and Integration: A Comparative Review." Land 11, no. 4 (2022): 554. http://dx.doi.org/10.3390/land11040554.
Full textAbstract:
In response to the global loss and degradation of wetland ecosystems, extensive efforts have been made to reestablish wetland habitat and function in landscapes where they once existed. The reintroduction of wetland ecosystem services has largely occurred in two categories: constructed wetlands (CW) for wastewater treatment, and restored wetlands (RW) for the renewal or creation of multiple ecosystem services. This is the first review to compare the objectives, design, performance, and management of CW and RW, and to assess the status of efforts to combine CW and RW as Integrated Constructed Wetlands (ICW). These wetland systems are assessed for their ecological attributes and their relative contribution to ecosystem services. CW are designed to process a wide variety of wastewaters using surface, subsurface, or hybrid treatment systems. Designed and maintained within narrow hydrologic parameters, CW can be highly effective at contaminant transformation, remediation, and sequestration. The ecosystem services provided by CW are limited by their status as high-stress, successionally arrested systems with low landscape connectivity and an effective lifespan. RW are typically situated and designed for a greater degree of connection with regional ecosystems. After construction, revegetation, and early successional management, RW are intended as self-maintaining ecosystems. This affords RW a broader range of ecosystem services than CW, though RW system performance can be highly variable and subject to invasive species and landscape-level stressors. Where the spatial and biogeochemical contexts are favorable, ICW present the opportunity to couple CW and RW functions, thereby enhancing the replacement of wetland services on the landscape.
7
Sukhla, Prof Saurabh M., Mr Khatik Sufiyan Jameel, Mr Prasad Abhishek Ramesh, et al. "Wastewater Treatment Using Constructed Wetland System." International Journal for Research in Applied Science and Engineering Technology 10, no. 5 (2022): 1303–6. http://dx.doi.org/10.22214/ijraset.2022.42463.
Full textAbstract:
Abstract: Natural wetland such as marshes ,swamps and bogs protect water quality . constructed or artificial wetland system mimic the treatment that occurs in natural wetlands by rellyilng on plants and a combination of naturally occurring biological , chemical and physical processes to remove pollutants from water . As of 1999,there were more than 500 constructed wetland in Europe and 600 in north America . constructed wetland are a less energy intensive and more environmentally sound way of treating waste water and conserving potable water . The first single family home constructed wetland in southern Nevada was completed Eighth years ago. A constructed wetland (CW) is an artificial wetland to treat sewage, greywater, stormwater runoff or industrial wastewater. It may also be designed for land reclamation after mining, or as a mitigation step for natural areas lost to land development constructed wetlands also act as a biofilter and/or can remove a range of pollutants (such as organic matter, nutrients, pathogens, heavy metals) from the water. Constructed wetlands are designed to remove water pollutants such as suspended solids, organic matter and nutrients (nitrogen and phosphorus).
8
Ma, Fei, Li Jiang, and Ting Zeng. "Reversing Clogging in Vertical-Flow Constructed Wetlands by Backwashing Treatment." Advanced Materials Research 129-131 (August 2010): 1064–68. http://dx.doi.org/10.4028/www.scientific.net/amr.129-131.1064.
Full textAbstract:
More and more constructed wetland CW) were used to treat waste water in the world for its advantage on cheaper and efficiency. CW would clog for improper design or imperfect management, so application for it was limited. The purpose of this paper is that using backwashing method resolve filter media clogging problem which is an intractable matter in constructed wetlands project. The effects of the backwashing treatment on pollutant removal, as well as the influence on characteristics of hydraulics of wetlands, were studied. The experimental results indicate that CW hydraulic conductivity, hydraulic resistance time and removal rate of COD increased after backwashing. This paper confirmed that backwashing method can reverse clogging in vertical-flow constructed wetlands, and provided design guidance for applying backwashing method to treat clogging vertical-flow constructed wetlands.
9
Jingyu, Huang, Nicholas Miwornunyuie, David Ewusi-Mensah, and Desmond Ato Koomson. "Assessing the factors influencing the performance of constructed wetland–microbial fuel cell integration." Water Science and Technology 81, no. 4 (2020): 631–43. http://dx.doi.org/10.2166/wst.2020.135.
Full textAbstract:
Abstract Constructed wetland coupled microbial fuel cell (CW-MFC) systems integrate an aerobic zone and an anaerobic zone to treat wastewater and to generate bioenergy. The concept evolves based on the principles of constructed wetlands and plant MFC (one form of photosynthetic MFC) technologies, of which all contain plants. CW-MFC have been used in a wide range of application since their introduction in 2012 for wastewater treatment and electricity generation. However, there are few reports on the individual components and their performance on CW-MFC efficiency. The performance and efficiency of this technology are significantly influenced by several factors such as the organic load and sewage composition, hydraulic retention time, cathode dissolved oxygen, electrode materials and wetland plants. This paper reviews the influence of the macrophyte (wetland plants) component, substrate material, microorganisms, electrode material and hydraulic retention time (HRT) on CW-MFC performance in wastewater treatment and electricity generation. The study assesses the relationship between these parameters and discusses progress in the development of this integrated system to date.
10
Othman, Maidiana, Zuliziana Suif, Nordila Ahmad, Siti Khadijah Che Osmi, and Mohamad Nazrul Hafiz Mohd Nadzri. "Performance of Pilot-scale Constructed Wetland for Treating Stormwater." Jurnal Kejuruteraan si4, no. 2 (2021): 141–45. http://dx.doi.org/10.17576/jkukm-2021-si4(2)-21.
Full textAbstract:
Water scarcity and storm water management are two major challenges that effect the ecosystem and urban environment. In hot and humid country such as Malaysia, wastewater reuse should be encouraging whenever it is safe and economically feasible. Constructed wetlands (CW) have been recognized as one of the environmentally friendly technologies and successfully used for treating a diverse range of wastewaters. Constructed wetland can also be suitable habitat for native wetland plants and associated fauna. In an urban setting such as a university campus, a constructed wetland can also be landscaped as an educational and attractive green space, providing service learning and teaching opportunities for campus and surround community members. This study examines the performance of pilot-scale constructed wetlands as a sustainable wastewater treatment in Universiti Pertahanan Nasional Malaysia (UPNM) campus for treating and reusing the stormwater in the mini-reservoir. The pilot-scale of constructed wetlands have been designed and constructed in the laboratory using native wetland plant, the Cat-tail Typha Angustifolia. The pilot-scale of CW with vertical subsurface flow (VSF) system was able to remove all parameters better than horizontal subsurface flow (HSF) system. The highest percentage of removal of all parameters was at hydraulic retention time (HRT) of 5 hours and percentage of removal increased with an increase in HRT. The percentage of removal for total suspended solid (TSS), Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), and Dissolved Oxygen (DO) approximately 84%, 71%, 68%, and 25%. Thus, the constructed wetland had the potential to increase the water quality level of stromwater in UPNM campus in order to support the sustainability and Green Campus environment campaign.
Dissertations / Theses on the topic "Constructed wetland (CW)"
1
Hamadeh, Ahmed F. "Soil Aquifer Treatment (SAT) and Constructed Wetlands (CW) Applications for Nutrients and Organic Micropollutants (OMPs) Attenuation Using Primary and Secondary Wastewater Effluents." Diss., 2014. http://hdl.handle.net/10754/324605.
Full textAbstract:
Constructed wetlands (CW) and soil aquifer treatment (SAT) represent natural
wastewater treatment systems (NWTSs). The high costs of conventional
wastewater treatment techniques encourage more studies to investigate lower cost
treatment methods which make these appropriate for developing and also in
developed countries.
The main objective of this research was to investigate the removals of
nutrients and organic micropollutants (OMPs) through SAT, CW and the
CW-SAT hybrid system.
CWs are an efficient technology to purify and remove different nutrients as well as
OMPs from wastewater. They removed most of the dissolved organic matter
(DOC), total nitrogen (TN), ammonium and phosphate. Furthermore, CWs
aeration could be used as one of the alternatives to reduce CWs footprint by around
10%. The vegetation in CWs plays an essential role in the treatment especially for
nitrogen and phosphate removals, it is responsible for the removal of 15%, 55%,
38%, and 22% for TN, dissolved organic nitrogen (DON), nitrate and phosphate,
respectively. CWs achieved a very high removal for some OMPs; they attenuated
acetaminophen, caffeine, fluoxetine and trimethoprim (>90%) under different
redox conditions. Moreover, it was found that increasing temperature (up to 36 C)
could enhance the removals of atenolol, caffeine, DEET and trimethoprim by 17%,
14%, 28% and 45%, respectively. On the other hand, some OMPs, were found to
be removed by vegetation such as: acetaminophen, caffeine, fluoxetine,
sulfamethoxazole, and trimethoprim. Moreover, atenolol, caffeine, fluoxetine and
trimethoprim, showed high removal (>80%) through SAT system. It was also
found that, temperature increasing and using primary instead of secondary effluent
could enhance the removal of some OMPs.
The CWs performance study showed that these systems are adapted to the
prevailing extreme arid conditions and the average percent removals are about,
88%, 96%, 98%, 98% and 92%, for COD, BOD and TSS, ammonium and
phosphate, respectively.
Additionally, the natural hybrid system (CW-SAT) can provide an effective
treatment technology of reclaimed water for replenishing aquifers and subsequent
reuse. This hybrid system embodied the performance advantages of both processes
and exhibits a high potential for removal of OMPs, nutrients, metals as well as
pathogens, bacteria and viruses.
Book chapters on the topic "Constructed wetland (CW)"
1
Rajpurohit, Praveen, and Manaswini Behera. "Treatment of Domestic Wastewater Using Constructed Wetland Coupled Microbial Fuel Cell (CW-MFC)." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-7842-3_24.
Full text
2
Sudarsan, J. S., Radhika Kumkumwar, Shraddha Kademwar, Nowel Bose, Akash Chobe, and Rishikesh Salunke. "Constructed Wetland (CW) Technique as an Effective Sustainable Treatment for Wastewater: A Review." In Lecture Notes in Civil Engineering. Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-5839-6_23.
Full text
3
Chandel, Himani, Kashika Keshari, Sibiraj Murugesan, et al. "Enhanced Effluent Treatment and Bioelectricity Generation Using Coupled Constructed Wetland-Microbial Fuel Cell (CW-MFC) Technology: Challenges and Opportunities." In Aquatic Macrophytes: Ecology, Functions and Services. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-3822-3_12.
Full text
4
Azaizeh, Hassan, Abeer Albalawneh, Samer Kalbouneh, and Yoram Gerchman. "Constructed Wetlands Lessons from Three Middle East Countries : The Effect of Plants and Filter Media on CW Performance." In Constructed Wetlands for Wastewater Treatment in Hot and Arid Climates. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-03600-2_10.
Full text
5
Mishra, Sudeep Kumar, Sanket Dey Chowdhury, Puspendu Bhunia, and Arindam Sarkar. "Constructed wetland for landfill leachate treatment." In Landfill Leachate Management. IWA Publishing, 2023. http://dx.doi.org/10.2166/9781789063318_0111.
Full textAbstract:
Due to complex chemical composition and high recalcitrance, the treatment of landfill leachate becomes challenging. The conventional wastewater treatment processes employed to remediate the landfill leachate necessitate huge operation and maintenance costs. For more than two decades, constructed wetlands (CWs) have been successfully used to treat landfill leachate. These systems mimic the natural wetland process and eliminate pollutants from wastewater. For effective landfill leachate treatment, a comprehensive understanding of its chemical composition and the quantitative and qualitative changes in its characteristics, and the factors that influence them is essential. This chapter reviews the pollutant removal mechanisms, application and performance, and the factors affecting the performance of the CW systems during landfill leachate management. Furthermore, a detailed analysis of the compatibility of various types of CWs for landfill leachate treatment has also been incorporated in this chapter.
6
Narayan, Maitreyie, Praveen Solanki, and R. K. Srivastava. "Constructed Wetland-Microbial Fuel Cells (CW-MFCs)." In Handbook of Research on Green Technologies for Sustainable Management of Agricultural Resources. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-7998-8434-7.ch009.
Full textAbstract:
By 2025, two-thirds of the world's population may be facing water shortages, according to the World Wildlife Federation. By 2030, water demand is forecast to increase by 40%. Over 1.2 billion are basically living in areas of physical water scarcity. And almost 1.6 billion face economic water shortage. And as our population continues to grow, there's just going to be more problems. So, we are in extreme need of that creation which can treat used water and can also provide us electricity so that we can use that water for irrigation purposes, toilet flush, and industrial purposes. In recent years the research work reported about an innovative constructed wetland microbial fuel cell (CW-MFCs) for more deduction of pollutants and instantaneous bioelectricity generation. A microbial fuel cell joined with constructed wetland (CW-MFC) is a novel device to treat the wastewater and create power that has more volume for wastewater treatment, is easy to repair, environmentally friendly, requires less space, and is also most cost-efficient than other devices.
7
Alvi, Sahail, Sai Shankar Sahu, Vivek Rana, and Subodh Kumar Maiti. "Constructed wetlands: an approach toward phytoremediation for wastewater treatment." In Clean Technologies Toward the Development of a Sustainable Environment and Future. IWA Publishing, 2023. http://dx.doi.org/10.2166/9781789063783_0181.
Full textAbstract:
Abstract Constructed wetlands (CWs) have been used as a proven efficient technology for wastewater treatment since the early 1950s. However, the first full-scale operation was conducted in the late 1960s. CW is an engineered system that utilizes various macrophytes to treat wastewater. It is cost effective, easy to operate, and maintain as compared to other conventional wastewater treatment technologies. It works with the mechanisms of different phytoremediation processes (i.e., phytoextraction, phytostabilization, phytovolatization, phytodegradation) and sedimentation, agglomeration and biodegradation of wastewater. CW can be classified on the basis of vegetation types (submerged, emergent, free-floating, and floating leaved), hydrological properties (free water, surface flow, and subsurface flow). Subsurface flow wetlands can be further classified as vertical or horizontal depending on the flow direction. Hybrid systems such as CWs clubbed with tube settler for hospital wastewater, biochar-based CW for manure wastewater are reported to have better treatment efficiency. However, the performance of CWs depends on several factors like vegetation type, type of wetland, type of wastewater treated, design specification of CWs, substrate used, microbiology of CW, climate and hydrological factors, and so on. Therefore, this chapter mainly focuses on all these aspects to fill the knowledge gaps and gives an insight to future research challenges and opportunities to achieve sustainability in the field of wastewater treatment.
8
Dhanda, Anil, Akash Tripathi, Rishabh Raj, and M. M. Ghangrekar. "Amalgamation of constructed wetland and microbial fuel cell for cost-effective and low carbon emitting treatment of industrial wastewater." In Resource Recovery from Industrial Wastewater through Microbial Electrochemical Technologies. IWA Publishing, 2024. http://dx.doi.org/10.2166/9781789063813_0193.
Full textAbstract:
The increasing demand for potable water and the negative impacts of industrial wastewaters on freshwater sources have necessitated the development of new technologies for holistic wastewater treatment. Constructed wetland–microbial fuel cell (CW–MFC) is an innovative and sustainable technology that combines the benefits of both CW and MFC. The wetland component provides conducive habitat for microbial growth, while the fuel cell generates electricity from microbial activity while treating wastewater. The same approach can potentially remove a wide range of recalcitrant pollutants from industrial effluents in addition to organic matter, nitrogen, and phosphorus. This technology consumes less energy, has low operating/maintenance costs and simultaneously produces renewable energy from waste streams, which makes it superior to traditional wastewater treatment technologies. The current chapter explores different types of CW–MFC systems evolved for wastewater application, emphasizing the fundamental principles, design considerations, and operation mechanisms of these systems. Further, the efficacy of CW–MFC for the treatment of a variety of industrial wastewaters, such as dairy, brewery, and pharmaceutical wastewater, is also elucidated. The chapter also highlights the challenges and limitations of the CW–MFC-based technologies and the measures required to improve their performance and scalability aspects.
9
Farraji, Hossein. "Phytoremediation of Nitrogen and Phosphorus in Municipal Wastewater by Cyperus alternifolius Planted Constructed Wetland." In Handbook of Research on Microbial Tools for Environmental Waste Management. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-3540-9.ch008.
Full textAbstract:
Nowadays municipal wastewater (MWW) treatment by phytoremediation techniques goes as an emerging technique in the USA and many European countries. Cleaning wastewater with constructed wetland (CW) is an advanced type of phytoremediation. Low concentration of hazardous metallic elements in this major wastewater caused its capability for treatment by CW. This treatment method highly depends on the presence of macrophytes, media, and operating factors which have high influences in the efficiency of this technology. This chapter will discuss on engineering controls that traditionally are available and practically could be used in the commonly CW. Recirculation, dry to wet duration, artificial aeration, absorbent application, dilution and carbon source addition through this eco-friendly decontamination method. The concentration of this manuscript will be on Cyperus alternifolius as a well-known rapid growth plant species which often known as an ornamental plant. This review on try to illustrate practical ways to enhancing efficiency of decontamination of MWW in CW
10
Farraji, Hossein. "Phytoremediation of Nitrogen and Phosphorus in Municipal Wastewater by Cyperus alternifolius Planted Constructed Wetland." In Research Anthology on Ecosystem Conservation and Preserving Biodiversity. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-6684-5678-1.ch053.
Full textAbstract:
Nowadays municipal wastewater (MWW) treatment by phytoremediation techniques goes as an emerging technique in the USA and many European countries. Cleaning wastewater with constructed wetland (CW) is an advanced type of phytoremediation. Low concentration of hazardous metallic elements in this major wastewater caused its capability for treatment by CW. This treatment method highly depends on the presence of macrophytes, media, and operating factors which have high influences in the efficiency of this technology. This chapter will discuss on engineering controls that traditionally are available and practically could be used in the commonly CW. Recirculation, dry to wet duration, artificial aeration, absorbent application, dilution and carbon source addition through this eco-friendly decontamination method. The concentration of this manuscript will be on Cyperus alternifolius as a well-known rapid growth plant species which often known as an ornamental plant. This review on try to illustrate practical ways to enhancing efficiency of decontamination of MWW in CW
Conference papers on the topic "Constructed wetland (CW)"
1
Tan, Sew Keng, M. Faris M Shah, Suriati Sufian, and Pui Vun Chai. "Constructed Wetland as an Alternative to Conventional Industrial Wastewater Treatment to Promote Carbon Sequestration for Sustainable Future." In International Petroleum Technology Conference. IPTC, 2023. http://dx.doi.org/10.2523/iptc-22913-ms.
Full textAbstract:
Abstract Constructed wetlands (CW) are man-made systems that mimic the natural wetlands. They can be used for various purposes, including wastewater treatment, stormwater management, and carbon sequestration. Wetlands naturally absorb and store carbon from the atmosphere, and CW can replicate this process by using plants and microorganisms to remove and store carbon from the water. Conventional wastewater treatment plants (WWTP) use more energy and contribute to carbon emissions, so many industries are looking for ways to reduce greenhouse gas (GHG) emissions. While CW have been widely used for municipal and sewage treatment, their use as an alternative or supplement to industrial wastewater treatment, particularly in the oil and gas and petrochemical industries, is limited. However, CW have the potential to promote carbon sequestration and have a lower cost of capital and operating expenses compared to conventional WWTP, while also emitting lower GHG emissions. A case study is presented for two types of system in which one is actual operating conventional WWTP in Malaysia design and operate at 60m3/d and a hybrid CW of equivalent treatment capability and capacity. The case study found that GHG emissions from a conventional WWTP were approximately 3.75 times higher than the hybrid CW system with the same treatment capacity. For a small capacity WWTP at 60m3 per day, converting the treatment system from conventional WWTP to CW will reduce approximately 45.7t CO2 eq per year based on Life Cycle Assessment (LCA) calculation. The conventional WWTP consumed much higher power especially from the air blower compared to CW where limited number of equipment is required. The additional carbon sink for CW from carbon sequestration from plant, soil decomposition and sediment has not been quantified in the LCA calculation. Hence, it is expected the actual CO2 eq emission for CW is much lesser than the conventional WWTP. With all the benefit identified and the proven success case in several places, the adoption of CW as an industrial WWTP should be widely promoted as the replacement of conventional WWTP for sustainable future.
2
Tan, Sew Keng, M. Faris M Shah, Suriati Sufian, and Pui Vun Chai. "Constructed Wetland as an Alternative to Conventional Industrial Wastewater Treatment to Promote Carbon Sequestration for Sustainable Future." In International Petroleum Technology Conference. IPTC, 2023. http://dx.doi.org/10.2523/iptc-22913-ea.
Full textAbstract:
Abstract Constructed wetlands (CW) are man-made systems that mimic the natural wetlands. They can be used for various purposes, including wastewater treatment, stormwater management, and carbon sequestration. Wetlands naturally absorb and store carbon from the atmosphere, and CW can replicate this process by using plants and microorganisms to remove and store carbon from the water. Conventional wastewater treatment plants (WWTP) use more energy and contribute to carbon emissions, so many industries are looking for ways to reduce greenhouse gas (GHG) emissions. While CW have been widely used for municipal and sewage treatment, their use as an alternative or supplement to industrial wastewater treatment, particularly in the oil and gas and petrochemical industries, is limited. However, CW have the potential to promote carbon sequestration and have a lower cost of capital and operating expenses compared to conventional WWTP, while also emitting lower GHG emissions. A case study is presented for two types of system in which one is actual operating conventional WWTP in Malaysia design and operate at 60m3/d and a hybrid CW of equivalent treatment capability and capacity. The case study found that GHG emissions from a conventional WWTP were approximately 3.75 times higher than the hybrid CW system with the same treatment capacity. For a small capacity WWTP at 60m3 per day, converting the treatment system from conventional WWTP to CW will reduce approximately 45.7t CO2 eq per year based on Life Cycle Assessment (LCA) calculation. The conventional WWTP consumed much higher power especially from the air blower compared to CW where limited number of equipment is required. The additional carbon sink for CW from carbon sequestration from plant, soil decomposition and sediment has not been quantified in the LCA calculation. Hence, it is expected the actual CO2 eq emission for CW is much lesser than the conventional WWTP. With all the benefit identified and the proven success case in several places, the adoption of CW as an industrial WWTP should be widely promoted as the replacement of conventional WWTP for sustainable future.
3
Valença, Gabriela Oliveira, Paulo Belli Filho, Dayane Dall’Ago Conejo e. Silva, and Rodrigo de Almeida Mohedano. "Constructed wetlands as carbon sinks – a review." In ENSUS2023 - XI Encontro de Sustentabilidade em Projeto. Grupo de Pesquisa Virtuhab/UFSC, 2023. http://dx.doi.org/10.29183/2596-237x.ensus2023.v11.n4.p124-136.
Full textAbstract:
In the face of global warming, research on carbon removal to mitigate the effects of climate change has been carried out. The use of constructed wetlands for wastewater treatment is known, however the quantity of studies about carbon sequestration of this system is still limited. Thus, the systematic and literature review aimed to expose the characteristics of constructed wetlands in relation to greenhouse gas emissions. The bases used were Scopus, Springer and Google Schoolar and the selected terms were related to constructed wetlands and GHG. It was concluded that the horizontal subsurface flow CWs has the potential to become a carbon sink, due to the carbon retained in the plants, and may emit less N2O than the vertical subsurface flow CW; about the emission of CH4, it is important to know the species of plant adopted due to its influence on methane emissions.
4
Baquir, Mohammad, and Nadeem Khalil. "MUNICIPAL WASTEWATER TREATMENT IN SUBSURFACE VERTICAL FLOW CONSTRUCTED WETLANDS USING CONVENTIONAL MEDIA IN SETUP PHASE." In Computing for Sustainable Innovation: Shaping Tomorrow’s World. Innovative Research Publication, 2024. http://dx.doi.org/10.55524/csistw.2024.12.1.18.
Full textAbstract:
Experimental investigation on municipal wastewater treatment through 6 pilot scale Subsurface Vertical Flow Constructed Wetlands (SSVF CWs) was studied utilizing two conventional materials as substrate used as 12 mm size gravel overlain by 2 mm size uniformly graded coarse sandat SWINGS site of Aligarh Muslim University, Aligarh, India. Among 6 CW beds first bed was kept unplanted and rest of the 5 beds were planted with Phragmites Karka, Canna Indica, Iris, Sagittaria and Phragmites Australis for conducting comparative study among macrophytes species used in context of contaminants removal. The primary emphasis of this study was the initial few months of the CWs running in setup phase. This phase encompasses improving phases in development of substrate permeability, microbial growth on substrate and rhizosphere, until the steady state for operation was achieved. The aims of this research paper are to assess duration requirement in setup phase for SSVF CWs through variations in removal efficiencies, and also to analyse the efficacy of conventional materials as substrate in the treatment of biological oxygen demand (BOD) and chemical oxygen demand (COD). The findings indicated that following a period of 174 days of running, the CWs had achieved a state of consistent permeability and commenced a stable removal process. The removal efficiencies for BOD and COD are found as Unplanted < Iris < Canna Indica < Sagittaria < Phragmites Karka < Phragmites Australis.