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Proposal Number: 5670

Domain: Sustainable Habitat

Theme(s): Urban Planning & Urban Design
Urbanization & Environment
Water, Sanitation and Solid waste management

Supporting Central Government Agency: Ministry of Urban Development

Budget (Rs. Lakhs): 242.10

Principal Investigator: Hoysala N Chanakya

Principal Investigator Institute: Indian Institute Of Science, Bengaluru

Makarand M. Ghangrekar ,Indian Institute of Technology, Kharagpur
Srikanth Mutnuri ,Birla Institute of Technology and Science-Pilani, Goa campus
ARUN KUMAR THALLA ,National Institute of Technology-Karnataka, Surathkal
Lakshmi Narayana Rao ,Indian Institute of Science Bangalore

Domain: Sustainable Habitat

Project Title

Small Scale and Sustainable Household Grey-Water Recycling (S3HWR)

Web Abstract

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.