Skip to Main content Skip to Navigation
Journal articles

Constructed wetlands for treatment of combined sewer overflow in the US: a review of design challenges and application status

Abstract : As combined sewer systems and centralized wastewater treatment facilities age, many communities in the world are challenged by management of combined sewer overflow (CSO). Constructed wetlands are considered to be one of the green infrastructure solutions to CSOs in the US. Despite the wide application of constructed wetlands to different types of wastewaters, the stochastic and intermittent nature of CSO presents challenges for design and performance assessment of constructed wetlands. This paper reviews the application status of CSO constructed wetlands in the US, assesses the benefits of CSO constructed wetlands, identifies challenges to designing CSO constructed wetlands, and proposes design considerations. This review finds that constructed wetlands are effective in CSO treatment and relatively less expensive to build than comparable grey infrastructure. Constructed wetlands not only remove pollutants, but also mitigate the event-associated flow regime. The design challenges include incorporating considerations of green infrastructure into permit requirements, determining design capacity for highly variable flows, requiring pretreatment, and needing adaptive design and intensive monitoring. Simultaneous monitoring of flow rate and water quality at both the inflow and outflow of CSO constructed wetlands is required for performance assessment and needed to support design, but is rarely available.
Document type :
Journal articles
Complete list of metadatas

Cited literature [23 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01143003
Contributor : Import Ws Irstea <>
Submitted on : Monday, April 20, 2015 - 10:45:54 AM
Last modification on : Monday, May 18, 2020 - 2:35:33 PM
Long-term archiving on: : Tuesday, April 18, 2017 - 9:50:19 PM

File

ly2014-pub00043286.pdf
Publisher files allowed on an open archive

Identifiers

Collections

Citation

W. Tao, J.S. Bays, D. Meyer, R.C. Smardon, Z.F. Levy. Constructed wetlands for treatment of combined sewer overflow in the US: a review of design challenges and application status. Water, MDPI, 2014, 6 (11), pp.3362-3385. ⟨10.3390/w61133662⟩. ⟨hal-01143003⟩

Share

Metrics

Record views

207

Files downloads

461