A residential demonstration home in Arizona, USA, was retrofitted to recycle greywater for landscape irrigation and toilet flushing.
|Title||Water quality study of graywater treatment systems|
|Publication Type||Journal Article|
|Year of Publication||1995|
|Authors||Gerba, CP, Straub, TM, Rose, JB, Karpiscak, MM, Foster, KE, Brittain, RG|
|Pagination||p. 78-84: 4 fig., 5 tab.|
|Keywords||bacteriological quality, cartridge filters, comparative analysis, demonstration projects, disinfection, household appliances, nitrates, sand filtration, suspended solids removal, turbidity removal, usa, usa arizona, wastewater recycling, wastewater treatment, water hyacinth|
A residential demonstration home in Arizona, USA, was retrofitted to recycle greywater for landscape irrigation and toilet flushing. The following five simple greywater treatment systems were installed at the home and evaluated: (1) water hyacinths and sand filtration; (2) water hyacinths, copper ion disinfection and sand filtration; (3) copper ion disinfection and sand filtration; (4) copper/silver ion disinfection and sand filtration; and (5) 20- micron cartridge filtration. Treatment reduced nitrate concentrations to an average of 2.6 mg/litre. Reductions in suspended solids and turbidity were influenced more by the quality of greywater entering the system than the efficiency of the systems themselves. Even though all systems were capable of significant reductions in faecal indicator bacteria, suspended solids, and turbidity, additional treatment or disinfection was needed to comply with the State of Arizona's standards for coliform and faecal coliform bacteria.
|Notes||Repr. from: Water resources bulletin, vol. 31, no. 1, 1995. - 19 ref.|