A Clever Way of Getting Clean Water to a Ballooning Global Population

With over 1.2 billion citizen , India is the second - most populated nation on Earth . Sixty - eight percentof Indians live in rural area that might not have clean boozing urine . Since the Earth population will hit 9 billion by 2050 , with many of those hoi polloi living in developing land , increased entree to sporting water is crucial . One Amerindic company ’s engineer a well that could provide just that .

In India , a banging 80,000 square mi of land is calculate to carry water system that ’s too salty to drink . Much of the groundwater there is brackish and has high salinity , and desalination resources are n’t available . That leave that water completely useless for drinking , and largest ineffective for irrigation .

So civil engineers at theSehgal Foundation , a 16 - year - old Amerind nonprofit , ginned up a clever well design that does a expert job of gathering fresh rainwater that can be safely collect from wells used in rural areas .

In India , many community expend recharge wells : Concrete tubes in the ground designed to collect rain runoff from space like rooftops during monsoon . That water is campaign back into the ground in a process called “ groundwater recharge . ” In many nations , as the population increases , humans have startedpumping too much waterout of the ground . As a result , many of our aquifers — rocks underground saturate with usable water system — are turn tail wry . So reload wells can help solve this by “ recharge ” the underground water provision .

The problem is , once pull together in some of these recharge well , that rainwater float atop that piquant groundwater that many Indian country have to administer with , since the rainwater is lighter . This makes it impossible to extract the reinvigorated H2O without mix it with salt water supply , too .

So the team at Sehgal had to redesign recharge wells . They basically unfold it out in both directions , like it was putty : The part above ground became taller , and the part underground extend profoundly into the earth . This novel shape increase the hydrostatic pressure within the well . So , when the pressurized water is collected , it pierce through the saline groundwater underneath and actually forms a “ bubble ” of freshwater within the saline water . The pressure exerted from the surround piquant water proceed that pocket of potable water supply intact .

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Next , freshwater from within that freshwater pocket is pump to the surface with a hired hand pump , and then lean through a filter that rids the water of any contamination . Voila : Safe , useable water .

The Sehgal Foundation was one of14 company and startupsthat the United Nations take from a competition of 800 global entries to address theUN ’s 17 Sustainable Development goal . The governing body present its alongside other pioneer at UN Headquarters in New York last month .

This ingenious direction of rethinking rainwater assemblage could be a game - changer for our planet ’s ever - growing population . According to theGlobal Water Forum , general demand for clean urine will jump 55 % by 2050 , once humans hit 9 billion . The only elbow room we ’ll meet those needs is by using enceinte technology , like this smart innovation in India .

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