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Many educational institutions in the city have taken up rain harvesting for water conservation and minimize their dependence on the civic water supply. The harvested water is mostly used for watering plants and trees, gardens, kitchen gardens and play grounds. At the Sevasadan English Medium School run by the Pune Sevasadan Society in Kothrud, the rainwater harvesting arrangement comprises a bore-well, a filter and a sedimentation pit that will be constantly recharged by the rainwater collected from the rooftop and storm water drains covering an area of 1675 sq m. The recharge potential of the well is estimated at approximate 1.7 million litre per annum. The system was set up in March last year.
The rainwater collected on the terrace is channelized to the sedimentation pit. Chambers have been constructed and connected to the bore-well. The system not only recharges the ground water, but also helps the school in several ways to save drinking water. The school has a one-acre ground on which water needs to be sprinkled everyday. "Rainwater harvesting has helped us in a big way to reduce the load on the drinking water supply as a lot of water is consumed for watering this ground. Besides, we have a kitchen garden where students do their projects. Here also we use the rainwater," said Nitin Lele, trustee, Pune Sevasadan Society.
At the Nowrosjee Wadia College, the recharge potential of the rainwater harvesting system is 45 million liter water. M.N. Andar, who headed the execution of the project at the college, said the water crisis was a global challenge that required immediate attention. "It is our responsibility to educate people, especially the youth, about conserving water. I would like to urge my students and teachers to act as catalysts and encourage the community at large to take up projects like rain water harvesting." The project aims to provide adequate water for non-drinking purposes and recharge groundwater on the entire campus.
The set-up includes rainwater harvesting structures in five buildings, two soak pits, two water collection trenches and a filtration pit to recharge the existing well. The college has selected the rooftops of the buildings of examination department, mechanical department, physics department and college of engineering for harvesting rainwater. "Rainwater is collected through downtakes and trenches. It then undergoes a filtering process before it is collected in the well." said Andar. The well is the college's main source of water for all purposes except drinking. The water is mainly used to water the plants and the college ground.
Courtesy: Times of India
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