Vol. 8, Issue 1 (2020)
Characterization and treatment of grey water: A review
Author(s): SS Rakesh, Dr. PT Ramesh, Dr. R Murugaragavan, Dr. S Avudainayagam and Dr. S Karthikeyan
Abstract: Wastewater generated from households is categorised in to two types, greywater and black water, greywater constituting the largest flow. Greywater refers to the household wastewater generated from showers, washing machines and bathroom sinks excluding toilet wastes and that it has low pathogenic and organic contaminants. The greywater from residential apartment accounts for 50 – 70 per cent. The composition of greywater varies greatly according to its origin (i.e., bathroom, laundry or kitchen greywater) and is influenced by the water quality of the locality. A variety of contaminants including acidic and alkaline substances, suspended and dissolved solids, fats, oil and grease, heavy metals, synthetic chemicals and pathogenic organisms are likely to be present in greywater. The organic fractions in greywater is around 30 per cent, while the nutrient fraction constitute 9 – 20 per cent. Heavy metals, xenobiotic compounds, nitrates, phosphates, quaternary ammonium compounds (QUATS) were reported as contaminants in greywater. Most of these originate from body lotions, hair dyes and make-up materials. The presence of these compounds could harm ecosystems if not properly treated and disposed. The greywater needs to be treated and reused for the various household purposes, other than direct consumption.
Pages: 34-40 | 1756 Views 155 Downloads
How to cite this article:
SS Rakesh, Dr. PT Ramesh, Dr. R Murugaragavan, Dr. S Avudainayagam, Dr. S Karthikeyan. Characterization and treatment of grey water: A review. Int J Chem Stud 2020;8(1):34-40. DOI: 10.22271/chemi.2020.v8.i1a.8316