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Grey Water Treatment of Washing Machine at household level

A sustainable approach for the treatment of greywater
produced by the washing machine

 

Problem Statement
Title: A sustainable approach for the treatment of greywater produced by the washing machine.
1.Can the grey water be recycled for purpose of washing clothes again? If yes, what treatment technology is suitable in terms of economic feasibility and size?
2. How many times can the treated water be reused?
3. What combination of technologies can be used to achieve the aim?

Abstract
On a weekly basis, each household generates 1000L of greywater from washing machines.This report presents cheap, effective and scalable methodology to treat greywater produced bywashing machines, which constitutes of various pollutants like oil, sand, surfactants, organicmatter, heavy metals etc. The results showed that the COD , turbidity, TSS values greatly decrease by using the proposed treatment process, which consists of 4 stages: CFF system(coagulation-flocculation-floatation), sand filtration, oxidation and water purifier filter system(activated carbon and membrane filtration). The COD and turbidity values of the final treated wastewater were reduced by almost 85% and 100% respectively. The results were very promising and indicated that the introduced methodology can be used by market-oriented companies to meet the water shortage demand, thereby sustaining the fresh water resources.

The complete report is availabe at : 


Design Figures: 

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