Journal
RESOURCES CONSERVATION AND RECYCLING
Volume 55, Issue 3, Pages 356-361Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.resconrec.2010.11.001
Keywords
Design; Quantification; Water saving; Performance evaluation; Characteristics
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In India, the per capita water availability is reducing day by day due to rapid growth in population and increasing water demand. Greywater treatment and reuse is one of the feasible options in developing countries like India to overcome this problem. A greywater collection, treatment and reuse system was designed and implemented in an urban household having a water requirement of 165 liter per capita per day (lpcd) and a greywater generation rate of 80 lpcd. An upflow-downflow greywater treatment plant having a screening, sedimentation, filtration and disinfection as major treatment processes was constructed and treated greywater is used for toilet flushing and to irrigate the vegetables in the backyard of the household. Greywater characterisation indicates that COD and BOD are sufficiently reduced during the treatment and there is also substantially reduction in Escherichia coli count. The payback period of this greywater treatment and reuse system is estimated to be 1.6 year. (C) 2010 Elsevier B.V. All rights reserved.
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