Alternative Water Processor Test Development

Pickering, Karen D.; Mitchell, J. L.; Adam, Niklas; Bárta, D.; Meyer, Caitlin; Pensinger, Stuart; Vega, Leticia; Callahan, Michael R.; Flynn, Michael; Wheeler, Ray; Birmele, Michele N.; Lunn, Griffin M.; Jackson, W. Andrew

doi:10.2514/6.2013-3401

Cited by 3 publications

(1 citation statement)

References 4 publications

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“…Two types of detergents were evaluated for clothes washing: (a) a United States Department of Agriculture certified bio-based laundry (BBL) detergent, (b) a conventional non-bio-based laundry (non-BBL) detergent. The BBL detergent was reported to be less toxic to graywater effluent microbial community compared to the non-BBL detergent (Pickering et al, 2013). The non-BBL detergent contained 22 organic compounds; while the BBL detergent contained 16 ingredients, seven of which were organic compounds and nine were inorganic compounds.…”

Section: Materials and Graywater Sourcesmentioning

confidence: 98%

Feasibility of a semi-batch vertical-flow wetland for onsite residential graywater treatment

Bill

Stenstrom

et al. 2015

Ecological Engineering

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Available online xxx Keywords: Graywater treatment Vertical flow wetland Nonpotable water reuse Biofilm Semi-batch A B S T R A C TThe technical feasibility of graywater treatment, via a semi-batch vertical flow wetland (SB-VFW), was evaluated at a single family home for aboveground water reuse. Graywater treatment was achieved to a quality level that was well within the regulatory compliance limits (e.g., with respect to biochemical oxygen demand (BOD), total suspended solids (TSS) and turbidity) for above ground reuse. System performance over the course of a five-month field study demonstrated that the necessary treatment time was typically $3 h for a 300 L batch. The SB-VFW operated in a stable manner owing to the use of a coconut soil substitute that has high hydraulic conductivity and also enabled avoidance of clogging due to excess biofilm growth. The latter was made possible through the use of a bio-based laundry (BBL) detergent which had a lower organic content relative to conventional laundry detergents. The system was able to return to normal operation even after detergent shock loads. Results of the present study are encouraging and suggest that residential level graywater treatment is technically feasible and can thus potentially expand the range of possible water reuse applications.

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Section: Materials and Graywater Sourcesmentioning

confidence: 98%