What is it about?
The concentrated greywater generated from the sub-Saharan urban poor is a problem to dwellers when disposed to the street or other open spaces without any treatment. The concentrated greywater is the main cause of environmental pollution and a health risk for the community. The study was designed to study the feasibility of vermifiltration to treat concentrated greywater in hot climate.
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Why is it important?
It is suggested that this technology could be an alternative sanitation option for urban poor to reduce the effect of greywater pollution. The zero cost for collection and the ability to treat pollutants physically, chemically and biologically in a single facility makes the technology cheaper and selective.
Perspectives
This research was conducted during the hottest period (March -May). The dominantly available earthworm, Eudrilus eugeniae, tolerated temperatures above 40oC inside the filter and improved the conditions of the vermifilter. The vermifilter was almost odour free compared to the control unit.
Dr Amare Tiruneh Adugna
Addis Ababa Science and Technology University
Read the Original
This page is a summary of: Greywater treatment by vermifiltration for sub-Saharan urban poor, Journal of Water Sanitation and Hygiene for Development, August 2014, IWA Publishing,
DOI: 10.2166/washdev.2014.021.
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