Granular media filtration for on-site treatment of greywater: A review

Rapid urbanization and industrialization have put pressure on water resources and centralized wastewater treatment facilities and the need for greywater treatment at decentralized levels is increasing. This paper reviews the studies that used granular filtration for the treatment of greywater. Filte...

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Bibliographic Details
Published in:Water science and technology 2022-09, Vol.86 (5), p.992-1016
Main Authors: Shaikh, Irshad N., Ahammed, M. Mansoor
Format: Article
Language:English
Subjects:
Bibliometrics
Filter media
Filters
Filtration
Granular materials
Granular media
Greywater
Industrialization
Keywords
Media
Microorganisms
Toilet facilities
Urbanization
Visualization
Wastewater treatment
Water resources
Water reuse
Water treatment plants
Wetlands
Zeolites
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Summary:Rapid urbanization and industrialization have put pressure on water resources and centralized wastewater treatment facilities and the need for greywater treatment at decentralized levels is increasing. This paper reviews the studies that used granular filtration for the treatment of greywater. Filter media characteristics that helps in the selection of suitable sustainable and environmental friendly materials without compromising the quality of treated greywater is first reported. The effect of type of filter media, media size and media depth along with the effect of operating conditions are discussed in detail. The choice, role and effect of different pre-treatment alternatives to granular media filtration are also presented. The efficiency of the filters to remove different physicochemical and microbial parameters was compared with different reuse guidelines and standards. Reported studies indicate that not only filter media characteristics and operating conditions but also the quality of raw greywater significantly influence the filter performance. Based on the source of greywater and desired reuse option, different granular media filtration alternatives are suggested. Operation of filters with properly selected media at optimum conditions based on the source of greywater helps filter in achieve the different reuse standards.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2022.269