Chemical-free electrochemical that cleans sewage before it enters Tamirabharani
A pilot project in Tirunelveli is testing a chemical-free electrochemical system to treat raw sewage before it enters the Tamirabharani river. This initiative aims to address severe pollution issues while long-term underground drainage projects face significant delays.
Why it matters
It demonstrates a potential technological solution for urban water pollution in regions where traditional infrastructure projects are stalled.
A pilot sewage-treatment trial conducted at a sewage outfall on the Tamirabharani river has demonstrated that raw municipal sewage can be treated to a quality that betters statutory pollution-control standards stipulated by the government agencies and National Green Tribunal mandate.
Despite connecting 23,000 houses and commercial establishments in the first phase of the underground sewage system implemented at a cost of ₹52.26 crore, Tirunelveli Municipal Corporation has admitted that around 80% of sewage was still entering the river, which is also the source of drinking water.
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