New Delhi – Water recovery management firm, Absolute Water, transforms sewage water into tap water with the help of Wriggly Little Allies.
The company built a sewage treatment plant (STP) in West Delhi’s Keshopur for Delhi Jal Board (DJB) as a pilot project.
The plant, built at a cost of Rs 55 lakh, is able to filter enough sewage and produce 1 lakh litres of clean, usable water a day.
The sewage is filtered by a homegrown water recovery system which is a five-layer stack of special micro-pollutant-chomping worms, wood chips, gravel and gravity sand.
The massive challenges to transform the sewage water into tap water includes the staggering amount of wastewater that India generates and the severe water stress that’s likely to worsen over the next decade.
According to a 2016 Central Pollution Control Board (CPCB) report, India generates 61,754 million litres of sewage everyday, out of which nearly 63% is untreated.
The organic media stacks of wood chips, gravel and soil needs to be replaced after every 8-12 months.
Absolute’s system gives a glimpse of a circular approach that could change the way people think towards water conservation and measures on how to use it.