Constructed wetlands for treatment of combined sewer overflow in the US: a review of design challenges and application status - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue Water Année : 2014

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

Résumé

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.
Fichier principal
Vignette du fichier
ly2014-pub00043286.pdf (926.85 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-01143003 , version 1 (20-04-2015)

Identifiants

Citer

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, 2014, 6 (11), pp.3362-3385. ⟨10.3390/w61133662⟩. ⟨hal-01143003⟩

Collections

IRSTEA INRAE
81 Consultations
294 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More