Monday, September 02, 2019

AAI to harvest rainwater at Chennai airport

Chennai: Before the onset of monsoon, the Airports Authority of India (AAI) has started training its engineers on rainwater harvesting techniques, including rooftop harvesting and through recharge wells, in a bid to improve water availability at Chennai airport and its surroundings.
The idea is to harvest rainwater from stormwater drains that criss-cross the 1,301.28acre compound of the airport. These drains carry rainwater from nearby residential areas to Adyar river.
The Central Ground Water Board, which is conducting the training, will carry out a study on the groundwater scene and aquifers in the substrata of operational area of the airport and will come up with solutions to recharge groundwater. The report will be submitted in 10 days.
Airport director S Sree Kumar said, “The aim is to increase the quality and yield of groundwater not only for the airport but also for surrounding neighbourhoods. It will also increase water table and will reduce the hardness of water.”
He said, “A study was required because the drains are in the operational area where runways and taxiways are located and also because we have to install harvesting system which will be installed based on the study.”
AAI is also planning to install a filtering system to improve quality of water fed into the recharge wells.
The groundwater mostly tapped from seven to eight borewells inside the airport is hard water. However, the open wells inside the airport has good quality water.
The airport uses approximately 10 lakh to 12 lakh litres of water per day. The water is sourced from borewells, open wells, sewage treatment plant and supply from the government. The water sourced from borewells is hard water and is treated in an RO plant before it is used. Around 50% of the requirement of water is met through supply from the government.
02/09/19 Times of India
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