AN EXPERIMENTAL INVESTIGATION OF GRAY WATER TREATABILITY AND ITS CHARACTERISTICS ENHANCEMENT BY DIFFERENT MEDIUM

Abstract

Gray water is generated during domestic activities through wash basins, bathrooms, kitchen sinks and automobile cleaning etc. They often contain objectionable parameters, such as solids, organic, nutrients, coli forms etc restricting the disposal into water bodies/its beneficial uses. Gray water plays an important role to be a resource which can be treated for application in a lot of areas which are water starved. Treated Gray water can be one of the reliable alternatives with the increased challenges of freshwater availability. It contains low organic matters which makes it to be used prior to the treated sewer water as its availability is throughout the year. It is cost feasible for recycling and also a good source of water for augmenting water supply. Various medium of a filter treatment method of Gray water are used in this research such as gravels, Course Sand, Charcoal for both Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) removal efficacy. A study was performed on Gray water generated from residences of Sector 26, Pratapnagar, Jaipur collected and physico-chemical-biological parameters analyzed from the same. The samples analyzed showed clearly high values of pollution parameters necessitating a simple treatment scheme to suit the reuse as a medium at gardens for irrigation purpose.