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BITS Goa, Belgium university develop new technology

Panjim: Adding another feature to its cap, BITS-Pilani K K Birla Goa campus has developed a technology to disinfect wastewater through electricity in a bid to limit the risk to inhabitants around open drains.The project titled ‘Empowered septic tank as decentralized wastewater treatment system’ was carried out by a team of professors and doctorate students of BITS and Ghent University in Belgium.“This project aims to develop a financially affordable and simple-to-operate decentralized wastewater treatment system for a single household as well as for a gated community of 100 people (25 families) that will produce high quality effluent for safe disposal.
The waste treatment system will involve the bio-electrolysis of wastewater to reduce its Chemical Oxygen Demand (COD) and odour,” Prof Srikanth Mutnuri of BITS Pilani told Herald.The team is using electrochemical manipulation of water to change the pH to kill pathogens in the wastewater. He revealed that the team started with a small unit in the lab to demonstrate the system and subsequently built a system that serves a household of 10 people and a larger one for about 100 people.The team, comprising BITS PhD students Guruprasad Talekar, Anant Yadav and Priya Sharma; and Ghent University professors Korneel Rabaey and Willy Verstraete is currently testing this larger system which is attached to a hostel on the campus.The new technology is a strong push towards the desired future standalone and sustainable toilet and sanitation technologies that do not require to be connected to a larger sewerage system and neither needs the input of chemicals. “The team is now discussing a rollout over multiple sites in India,” Mutnuri said. [H]

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