Hauz Khaz Lake gets a new lease of life
EVOLVE was founded in 2010 by Tarun Nanda, a civil and environmental engineer from the UK who returned to his roots. Ever since, he has assiduously been working towards reviving the Hauz Khas Lake that happens to be a major public waterbody as well as a popular get away spot in the heart of Delhi, by creating urban wetlands.
Bringing international engineering expertise, Tarun's focus has been on the innovative application of engineering techniques to solve water pollution and infrastructure needs for both private and public projects.
[EVOLVE] has already designed low cost sustainable infrastructure for slums as well as for private residencies.
The revival of Hauz Khas Lake, Delhi is being done by mainly using constructed and floating wetlands, creating the Hauz Khas Urban wetlands.
Working closely with Tarun in this project has been Debayani Panja.
The corporate sponsor of the project is Pernod Ricard India Foundation.
Sharing more, Tarun says, "Subsequent to getting the permission in August 2017, we launched a crowdfunder, and began working with volunteers until the corporate sponsor came on board in August 2018. The total area of the constructed wetlands is 425 sqm, and we strongly believe that it is the largest and the most technologically advanced natural sewage treatment plant in Delhi. We have used different types of wetland designs such as horizontal flow, vertical flow, sub surface flow wetlands and the surface flow wetlands. And some wetlands that change their function depending on lake level and the inlet flows.
We have built two natural water treatment plants, one to filter the incoming water, and the other one to filter the existing lake volume. It is the first lake in Delhi, if not the whole of India, where water is pumped from the lake, and fed into a filtration plant before being returned to the lake. The source of the water is a mix of partially treated and raw sewage, which we filter before it enters the lake. We have also installed 50 floating wetland islands with the help of citizens and schools like Pathways Noida, who got 600 children to the Hauz Khas lake, who have not only adopted islands, but also built and installed them on their own. We are working together to build a better India, and this happens to be our main driving force."
The key achievements of EVOLVE in India has been the Initiation and raising of funding for the revival of Hauz Khas Lake in Delhi, and working in sync with the Delhi Development Authority (DDA) to create the Hauz Khas Urban Wetlands using constructed and floating wetlands, as well as running an educational program to involve and teach the public how to restore local water bodies."