Performance Evaluation of 15 mld sewage treatment plant at gorakhpur

In Gorakhpur city there are two sewage treatment plants of total capacity 45MLD (30MLD+15MLD). This paper deals with the performance evaluation of 15 MLD Sewage Treatment Plant (STP) located at Maherva Ki Bari, Near Lifting Canal Pumping Station Jharkhandi of Gorakhpur which works on Sequential Batch Reactor (SBR) technology. Performance of this plant is an essential parameter to be monitored as the treated effluent is discharged into Ramgarh Lake. The Performance Evaluation will also help for the better understanding of design and operating difficulties (aeration, blowers, etc.) in Sewage Treatment Plant. Sewage samples were collected from Inlet and Outlet of the Treatment Plant and analyzed for the major waste-water quality parameters, such as Biological Oxygen Demand (BOD), Dissolved Oxygen (DO), Chemical Oxygen Demand (COD), Total Suspended Solids (TSS), and Total Kjehldal Nitrogen (TKN). Actual efficiency of the 15 MLD STP will be evaluated by collecting samples (24 in all) for the period of 3 months (December to February). The conclusions of these evaluations may determine required recommendations and focus on modification requirements for the STP and will also determine whether the effluent discharged into the water body are under limits given by CPCB. DO is a very essential parameter to test because treated effluent discharged into Ramgarh Lake which is huge containment for aquatic life.