Water Board plans hi-tech recycling unit

The Bangalore Water Supply and Sewerage Board, which is planning to set up a recycling plant at Vrushabhavathi Valley, along the course of Arkavathy river, proposes to invite tenders for the Rs 475-crore project once it receives the  government’s nod. 

The board will also set up a 160-million-litre (ML) capacity ultrafiltration (UF) plant at Doddabele in Kengeri with new membrane technology. After treating, the water will be allowed to mix with Arkavathy river course and pumped till Tavarekere near Magadi Road for 18 kilometres to mix with rainwater. 

Later, the water will be allowed to flow through gravity for seven kilometres to reach Thippagondanahalli reservoir (TG Halli).

The BWSSB is also planning to upgrade the existing 145 ML-capacity water treatment plant at TG Halli adopting dissolved air flotation (DAF) technology, already in use for treating water supplied through Cauvery IV Stage II Phase. Though BWSSB discontinued supply of water from TG Halli reservoir a year ago, the new project might draw more water to the reservoir to help supplies to City dwellers.

The alternative sources of water through recycle and reuse of treated waste water in Vrushabhavathi Valley is a BWSSB project in collaboration with Singapore’s Public Utilities Board, which has already conducted six workshops, including one in Singapore, where BWSSB engineers visited Singapore’s water plants. Singapore Cooperation Enterprise, Temasek Foundation and CH2M HILL are consultants who have prepared reports after exploring the ground realities of setting up a waste water recycle plant.

The consultants have also provided public education, outreach and engagement plan the BWSSB is formulating for implementation. Under the outreach programme, all stakeholders will be roped in to create awareness about using treated water for potable purpose. NGOs will be asked to conduct educative programmes. Essay competitions will be conducted for schoolchildren to educate them about reclaimed water.

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