The Buddha Purnima project wing intends to earn Rs 60 lakh per month from the sale of treated water from Hussainsagar, which is the only revenue generating project under the Hussainsagar Lake and Catchment Improvement Programme (HCIP).
The three filling stations, at NTR Garden service gate, Khairatabad flyover and Sanjeevaiah Park second gate together will have the capacity to fill 1,000 tankers (of 10 kilo liters) per day. Out of the 50 MLD of treated water, 35 MLD will be used to maintain the lake balance, seven will be used by HMDA and the rest will be sold.
These three filling stations will be connected with a six-km pipeline procured from Kolkata.
According to HMDA chief engineer for the reuse project who explained that, “Per day, 50 MLD of sewerage water is being treated at various sewerage treatment plants (STPs), out of which 35 MLD is needed to maintain the lake balance (for evaporation and percolation); of the remaining 15 MLD, 7.10 MLD is required for gardening and landscaping of HMDA amusement establishments surrounding Hussainsagar. The remaining 8 MLD will be stored at the filling stations for sale.”
The treated water contains dissolved oxygen less than 3 milligrams per liter (mg/l), residual chlorine from 0.1 to 0.2 mg/l and other elements like phosphorus, nitrogen, coliform and suspended solids. This can be used for irrigation, landscaping, construction, gardening and washing purposes.
Till now, the South Central Railway, Secunderabad, has come forward to purchase 1.10 MLD for washing bogies (0.6 MLD at Nampally station and 0.5 MLD at Kachiguda); some private construction companies and concrete ready mix plants have also showed interest.
“The exact price per tanker will be finalised after the completion of the filling stations. The HMDA has estimated close to Rs 2 lakh revenue per day (Rs 60 lakh per month). Each station will have four filling points and the maximum flow at each point will be 69 cubic meters per hour,” the official further said.