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Pune Municipal Corporation has been working and planning towards making Pune environment friendly and healthy in every possible way. Sewage Treatment Projects are important aspects in this exercise.
The very first sewerage system for Pune city was designed in 1928. The collected sewage was given preliminary treatment such as screening and grit removal at Bhairoba Nala and it was used for irrigation purpose by pumping 17.5 Nalli canal area. This system was designed for 31.8 MLD to cater to the ultimate design capacity for population of 0.26 million in the year 1951.
In the year 1981, a complete collection and disposal system was planned taking into account the adjoining areas where population was expected to increase. A 90 MLD Sewage Treatment Plant was constructed at Dr. Naidu I.D. Hospital. The treated sewage is let off into the Mula-Mutha river. There is an intermediate pumping station at Kasba Peth of 90 MLD capactity from where sewage is pumped into the sewage treatment plant at Dr. Naidu Hospital.
Up to the year 1997 the total main sewer length in all of the zones was approximately 146.83 km, in old Pune city limit. Dr. Naidu Sewage Treatment Plant with full-fledged primary and secondary sewage treatment facility, was treating 90 MLD sewage and Bhairoba Nala sewage treatment plant with primary sewage treatment facility was treating 32 MLD sewage.
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Sewage Projects - Master Plan in Pune CityEdit
Considering the increase in the area under the jurisdiction of PMC (430 sq.km) and a rapid rise in population, the project plan for water supply and sewerage services was revised and completed in the year 2005.
PMC has constructed 4 new sewage treatment plants (STPs) along with the STP at Naidu Hospital at Koregaon Park (Bhairoba Nala), Erandwane, Tanajiwadi and Bopodi. The total 451 MLD of sewage is generated in PMC limit, out of that 305 MLD (i.e. 68%) is treated by the 5 STPs and the treated effluent is discharged into Mula Mutha rivers. For the treatment of the remaining 146 MLD sewage generated, 2 more STPs are proposed: one in the premises of the existing Naidu STP (115 MLD) and another at Vitthalwadi near Rajaram Bridge (32 MLD). Work on these two plants is in progress.
|Location||Capacity||Areas covered||Cost||Functioning since||Process||Sludge generated cu m/day||Treated sludge characteristics|
|Erandwane (Near Mhatre Bridge)||50 MLD||26.15 sq.km: Erandwana, Kothrud, Warje, Karvenagar, Paud Rd., Karve Rd||Rs. 11.12 crores||Dec 2004||Modified activated sludge process followed by aerobic digestion. Aeration with the help of diffusers and settling with the help of inclined tube settlers||3||N = 1.17%; P = 0.0458%, K = 0.17%|
|Bhairoba Nala (Koregaon Park)||130 MLD||82 sq.km: Kondhwa, Vanawadi, Kalyaninagar, Dhanori, Vimannagar, Kalas, Vishrantwadi, Ghorpadi||Rs. 37.5 crores||Jul 2003||Sludge process followed by aerobic digestion. The gas generated in the digestor is useful for power generation and the treated water is presently used for irrigation||5||N =0.905%; P=0.0386%; K =0.007%|
|Tanajiwadi||17 MLD||18 sq.km: Model Colony, Shivajinagar, Janwadi, Gokhale Nagar, Ganeshkhind||Rs. 7.43 crores||Apr 2004||2 stage biological process is used, i.e. bio towers and aeration tank with diffused aeration system||1||N = 0.68%; P = 0.61%; K=0.63%|
|Bopodi (Near Harris Bridge)||18 MLD||15 sq.km: Aundh ITI, Aundhgaon, Sindh Colony, Bopodi, NCL, Raj Bhavan||Rs. 5.69 crores||Jun 2003||Extended aeration process. The sump well and pump house are constructed at Botanical Garden in Aundh, and a pipeline carries the sewage up to the STP||1||N=0.98%; P=0.87%; K=1.16%|
|Naidu Hospital||90 MLD||Sewage from Kasba pumping station||Rs.||Activated sludge process followed by aerobic digestion||not available||not available|
|Naidu Hospital extension||115 MLD||Rs.||not available||not available|
|Vitthalwadi||32 MLD||Rs.||not available||not available|