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Constructed wetlands for greywater recycle and reuse - Atlanta
Citation:
Arden, S. AND Cissy Ma. Constructed wetlands for greywater recycle and reuse - Atlanta. Presented at 2018 Water Research Foundation Conference, Atlanta, Georgia, May 06 - 08, 2018.
Impact/Purpose:
To explore alternative green infrastructure such as constructed wetland as treatment unit process of greywater, and the implications in non-potable water reuse applications. Greywater reuse has been suggested as a way to diversify local water supply portfolios while at the same time lessening the burden on existing environments and infrastructure. Constructed wetlands are often suggested as an economically and energetically efficient treatment technology, though their ability to consistently meet applicable water quality standards, microbiological in particular, is questionable. Here we review the existing case study literature to summarize the ability of greywater constructed wetlands to meet non-potable reuse standards. We show that although microbiological standards cannot be reliably met, certain wetland types can produce effluent that reliably meets chemical and physical standards. Furthermore, if combined with common disinfection unit processes, the treatment train can produce effluent of sufficient quality to meet all non-potable reuse standards.
Description:
Greywater reuse has been suggested as a way to diversify local water supply portfolios while at the same time lessening the burden on existing environments and infrastructure. Constructed wetlands are often suggested as an economically and energetically efficient treatment technology, though their ability to consistently meet applicable water quality standards, microbiological in particular, is questionable. Here we review the existing case study literature to summarize the ability of greywater constructed wetlands to meet non-potable reuse standards. We show that although microbiological standards cannot be reliably met, certain wetland types can produce effluent that reliably meets chemical and physical standards. Furthermore, if combined with common disinfection unit processes, the treatment train can produce effluent of sufficient quality to meet all non-potable reuse standards.