Small Scale and Sustainable Household Grey-Water Recycling (S3HWR)
Implementing Organization
Indian Institute of Science
Indian Institute of Technology (IIT)
Principal Investigator
Dr. Hoysala N Chanakya
Chief Research Scientist
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Indian Institute of Science
ASTRA / Centre for Sustainable Technologies
CO-Principal Investigator
Makarand M. Ghangrekar
Professor
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Department of Electrical Engineering, Indian Institute of Technology (IIT), Kharagpur, West Bengal
Department of Civil Engineering
Project Overview
Small-scale sustainable household grey-water recycling (S3HWR) project attempts to evolve an intra-household (HH) greywater recycling technology suitable for India using a combination of anaerobic and aerobic systems that can function within our socio-culturally acceptable construct of water recycling. Within HH, greywater recycling systems stand best to succeed to meet emerging shortages /outages. Proven /sustainable (efficient, <1m3/d) technology options do not exist today. We combine primary anaerobic (biofilm or AnSBR), with a (1of4) femto-power aerator-ozonator /constructed wetland /microbial electrogenic cell / solar photocatalyzer based secondary treatment to remove detergents, anti-microbials and bacterial loads and make recycled water clear, odour /froth free and socio-culturally acceptable. After rigourous trials to withstand perturbations we will build intra-HH and test in situ greywater recyclers providing recycled water of <10BOD @10/m3 operating uninterrupted ?3yrs. CST-IISc, Civil Engg-IITKgp, SBS-BITS-Goa and NITK will partner to evolve, rigorously test and come out with a prototype with an Industry partner for large-scale adoption.