Concerned over environmental degradation, architect Ashish Ganju was interested in sustainable solutions for urban set-ups. He implemented a home wastewater recycling system at his house in 2000. Now, Ganju’s house is a zero discharge system he achieved at a nominal cost.
His quaint, cottage-in-the-woods like house in Ayanagar village, near Arjan Garh Metro station, is located at the southern tip of Delhi.
An area ill-famous for continuously depleting groundwater table is just a stone’s throw away from Gurgaon, which too has witnessed groundwater exploitation leading to falling water table.
Earlier in 2000, Ganju had opted for a recycling system using a reed bed.
It is basically a plant, which is able to remove pollutants from water. He planted it on the two sides of the boundary of his house.
“All water from our house went into a manhole, which passed below the reed bed. It is the roots of the reed plant, which remove pollutants. The water then reached another manhole, where we had put a quality watch. Once satisfied, then it is allowed to flow into a well and naturally percolates to the ground, to recharge groundwater,” explained Ganju.
After running this system successfully for a few years, Ganju’s wife wanted her garden back.
So they switched from the ‘reed bed method’ to another system. Now they have a septic tank below the ground.
Below it, is a filtration bed of coarse sand, gravel and other material that purifies water before allowing it to percolate to the ground.
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