Treatment and recycling of greywater in AIKTC

Abstract

Safe and sufficient quantity of water is important for a healthy growth of citizenry. The gap between water demand and current water supply is increasing day by day. Proper sanitation, especially decentralized approach, can solve the matter of water system and wastewater management by reuse of greywater. Typically, from an institution, greywater (GW) flow is around 65 % of the total wastewater flow. The light greywater accounts for about 50% of the total GW. Therefore, GW has a high potential for recycling and reuse. The aim of this project is to show the current state of the art in GW treatment and to determine the further scope of research. Treatment systems with different treatment processes are discussed in detail with regard to the efficiency of pollutant removal, sewage concentrations and standards for reuse. Treated greywater can be used for non-potable purposes such as irrigation, toilet flushing, car washing and dust control as well as for recharging aquifers.