A review on effective design processes of constructed wetlands

Shukla, Amol; Parde, Divyesh; Gupta, Varun; Vijay, Ritesh; Kumar, Rakesh

doi:10.1007/s13762-021-03549-y

Cited by 51 publications

(11 citation statements)

References 140 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to previous research, intermittent aeration can reduce the photosynthetic process of plants, but four hours of intermittent aeration per day has very little effect on plants (Fan et al 2013). Intermittent aeration of 4-6 hours per day not only reduces aeration costs, but also improves N and organic removal efficiency (Shukla et al 2021).…”

Section: Aeration Reoxygenation Pondmentioning

confidence: 98%

“…Aquatic plants provide a large root surface area for microorganisms, and the oxygen transported to the inter-root sediment forms a clear aerobic zone near the root hairs, enhancing the redox potential of the inter-root zone and thus promoting the attachment, growth, and reproduction of aerobic bacteria, which facilitates pollutant removal (Fang et al 2021). Plants in an artificial wetland help transfer oxygen from the atmosphere to the roots, but half of the oxygen is taken up by the plants for respiration (Shukla et al 2021). The surface flow artificial wetlands were mainly planted with aquatic plants, such as Phragmites australis (Cav.)…”

Section: Surface Flow Artificial Wetlandsmentioning

confidence: 99%

See 1 more Smart Citation

Demonstration study of bypass multipond wetland system to enhance river water quality

Zeng

Xie

Guo

et al. 2022

Water Science and Technology

View full text Add to dashboard Cite

This study focused on the water quality of a river in Wuhan City, China, that is surrounded by ponds that were transformed into a bypass multipond wetland system to improve river water quality. The bypass multipond wetland system included surface flow artificial wetlands, modified partition ponds, aeration reoxygenation ponds, ecological ponds, and other processes. After the stable operation of the process, the water transparency was higher than 60 cm and the dissolved oxygen (DO) was higher than 5 mg/L, while the ammonia nitrogen (NH3-N) concentration was less than 1.0 mg/L, total phosphorus (TP) was lower than 0.2 mg/L, and chemical oxygen demand (COD) was lower than 20 mg/L, achieving the treatment target. After monitoring the results of each process, the process which best enhanced the water transparency enhancement was the surface flow of the artificial wetlands and ecological ponds. The aeration reoxygenation pond had the best effect on DO enhancement. The processes that most affected NH3-N and TP removal were the surface flow artificial wetlands and ecological ponds. The modified parthenogenic pond had the greatest effect on COD removal. The bypass multi-pond wetland system not only improved the river water quality but also enhanced the river landscape, and can act as a reference for similar river water quality improvement actions.

show abstract

Section: Aeration Reoxygenation Pondmentioning

confidence: 98%

Section: Surface Flow Artificial Wetlandsmentioning

confidence: 99%

Demonstration study of bypass multipond wetland system to enhance river water quality

Zeng

Xie

Guo

et al. 2022

Water Science and Technology

View full text Add to dashboard Cite

show abstract

“…The efficiency of the removal of the main contaminants of domestic and municipal wastewater in CWs is comparable to that of modern technologies of wastewater treatment, such as the activated sludge process (ASP), sequence batch reactor (SBR), mobile bed biofilm reactor (MBBR), upflow anaerobic sludge blanket (UASB), etc. CWs can remove BOD (85-90%), COD (65-80%), TSS (90-95%), TN (65-80%), and TP (35-50%) [30]. Furthermore, if CWs are used in their hybrid configuration and are associated with disinfection systems, they can be highly efficient in removing pathogenic microorganisms.…”

Section: Treatment Of Domestic Wastewater and Industrial Effluents By...mentioning

confidence: 99%

“…The advantages and disadvantages of CWs are well known and discussed in numerous reviews [9,12,30]. Low maintenance requirements, good treatment efficiency, and economic feasibility make CWs preferable to other wastewater treatment systems in certain situations.…”

Section: Final Considerationsmentioning

confidence: 99%

The Use of Constructed Wetlands to Treat Effluents for Water Reuse

de Campos,

Soto

2024

Environments

View full text Add to dashboard Cite

Constructed wetland systems (CWs) are technologies based on natural processes for pollutant removal and have been more and more accepted in the treatment of domestic and industrial wastewater. This study selected and reviewed articles published in the last six years involving the use of different CW conceptions and their association with other technologies to treat different effluents and evaluated the quality of the effluents for reuse. From a total of 81 articles reviewed, 41 presented quantitative data on the quality of the treated effluent in relation to the requirements of the reuse regulations in different countries of the world. CWs can be used to treat gray water and runoff water, as well as domestic and industrial effluents with the purpose of reusing them. While studies on the removal of new chemical and biological substances have increased, challenges are associated with the optimization of CWs to improve the removal of pathogens and new contaminants that have appeared more recently. The potential for the improved removal of those pollutants lies in the association of CWs with conventional and advanced technologies in new configurations. We concluded that studies related to the reuse of effluents using CWs are in constant evolution, with experiments at different scales. The perspectives are promising since CWs are an economic, environmentally friendly, and efficient technology to help in the mitigation of water scarcity problems imposed by climate changes.

show abstract

“…Constructed wetlands (CW) are one of the most used decentralized wastewater treatment methods [27] and can be easily coupled to a WABR. Over the years, CWs have seen a lot of improvement in the design and operation approach [28]. For example, embedding a microbial fuel cell into a CW bears potential to obtain bioelectricity from wastewater [29].…”

Section: Introductionmentioning

confidence: 99%