Qualitative Characterization of Household Greywater in Developing Countries: A Comprehensive Review

Abstract

Greywater is a type of wastewater generated from household activities which include bathing, laundry and kitchen activities. Greywater has a lower quality than potable water, but it is of higher quality than sewage. This article is a qualitative review presenting the quantities and qualitative characteristics of greywater in developed and developing countries. The chapter aims at highlighting the presence of nitrogen, phosphorus and pathogenic microorganisms. This paper provides a comprehensive review of greywater in order to understand the physiochemical and microbiological composition of greywater which represents the first step in choosing the most appropriate technology for the treatment process and to best evaluate the health risks associated with greywater discharge into the environment.