RAIN WATER HARVESTING AND UTILIZATION
Rain water harvesting is one of the most effective methods of water management and water conservation. It is the term used to indicate the collection and storage of rain water used for human, animals and plant needs. It involves collection and storage of rain water at surface or in sub-surface aquifer, before it is lost as surface run off. The augmented resource can be harvested in the time of need.
Artificial recharge to ground water is a process by which the ground water reservoir is augmented at a rate exceeding that under natural conditions of replenishment. The collected water is stored and pumped in a separate pipe distribution. This is a very useful method for a developing country like India in reducing the cost and the demand of treated water and also economizing the treatment plants operation, maintenance and distribution costs.
To make the college self-sufficient in water resources not only for domestic application but also for improving the green belt particularly lawn and garden an innovative, scientific system of Rain Water Harvesting was installed in the college premises. Total areal extent of the engineering college is 50 acres, which is equivalent to 565381 sq. The vacant area constitutes around 538770 sq. m.
SURFACE RUNOFF WATER HARVESTING:
The runoff from the unpaved area is intercepted at the main gate by a collection trench. From here the runoff eventually drains into an abandoned open well, which facilitates groundwater recharge. The storm water drains carries huge quantity of runoff water during monsoon. The rainwater harvesting system consists of filter tank of size 2m dia and 2m depth , collection chamber of size 1m dia and 1m depth and recharge well of size 3m dia and 5m depth at appropriate places. Based on average annual rainfall of 867 mm, the annual roof water and surface water generated from the terraces of buildings and open areas is 18457 KL and 2,80,260 KL, respectively. The harvested rain water is utilized for recharging the open well and bore wells by artificial recharge structure. The runoff water generates from the campus during monsoon is diverted to aquifer system. This rain water system overcomes the ill effects of inadequate natural recharge and over exploitation of water due to increasing demand it also targets the gradual improvement in the quality of water by implementing artificial recharge structure In addition to the tangible benefits, it also inculcate awareness to the student community who happen to be budding engineers and entrepreneurs of our country. The institution not only provides a modernized and sophisticated teaching learning infrastructure in the green atmosphere but redefined its environmental culture with green campus concepts.
ROOFTOP WATER HARVESTING:
In our institution water is collected from the roofs of buildings and stored in rainwater tanks. The runoff from the terrace of the college building is channelised into the recharge wells All the rooftop rainwater outlets, discharge into storm water drains and then to the recharge structures. To facilitate groundwater recharge, all structures are provided with deep bore wells. Layer of bricks filled inside the recharge well ensures proper filtration of harvested water.