The New Town Kolkata Development Authority (NKDA) is planning to launch a pilot project in the township to recycle wastewater for various purposes, including washing and gardening. The authorities are setting a target to achieve recycling of wastewater that will serve 25% of the daily requirement of water for various purposes other than drinking in the next five years.
Senior NKDA officials recently went to Bangalore to understand the water and waste management strategies followed there. “The authorities there were making tertiary treatment of wastewater in a 300-acre area after its usual conventional treatment in the sewage treatment plants using advanced technology. This treated and recycled water is being used for irrigation purpose,” said an NKDA official.
NKDA wants to follow the model and start off a pilot project near the New Town mela ground. “Presently, tertiary treatment of wastewater is being done on a small scale in Biswa Bangla Convention Centre with the recycled water being used for gardening, washing roads and flushing toilets. We want to expand this for the entire township,” an official said.
Officials said that they have seen in Bangalore that efforts were being taken to reduce water leakage and wastage by recycling the leaked water. NKDA authorities have already asked officials of the public health engineering department (PHE) to come up with an estimate as to how much water gets wasted due to leakage in New Town so that steps could be taken to control it.
As per estimates, out of 9.2 million gallon water per day that is supplied to New Town, roughly 80% goes to sewer network. Taking this estimate, about 7 million gallon of water goes to the sewer network after use and some also goes to waste through leakages.
“The plan is to reduce the amount of water leakage and increase recycling of wastewater. The goal is to meet at least 25% of the daily requirement from water recycled and saved from leakage in the next five years,” an official said. In adjacent Sector V, as per preliminary estimates, only 3% to 4% of water goes waste due to leakage.
The Housing Infrastructure Development Corporation (Hidco) has been working to develop rainwater harvesting and wastewater recycling units in New Town for various uses like gardening, washing and irrigation in different commercial and other establishments.
Source: Times of India