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Erschienen in:
2020 | OriginalPaper | Buchkapitel
Performance Evaluation of Sewage Treatment Plant (STP)—A Case Study
verfasst von : C. F. Rajemahadik, Nikunj Mendapara
Erschienen in: Recent Developments in Waste Management
Verlag: Springer Singapore
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Abstract
Maintaining STP is a vital assignment in present circumstances to reduce pollution. This paper describes the importance of maintaining STP in small cities. A case of 20 MLD capacity STP units having activated sludge process with sludge thickener and sludge drying beds were monitored for STP performance. A 7-week monitoring was conducted to analyze pH, alkalinity, TDS, TS, TSS, BOD5, COD, MLVSS, MLSS, and SVI form inlet to outlet. The study indicates STP was inefficient in treating domestic wastewater received through pumping stations. The reasons for inefficient STP performances were identified as improper pumping, insufficient F/M ratio, higher return sludge, greater oxygen dissolved, lower volumetric loading rate, greater recirculation ratio, and long HRT, which is more than required. The solid loading rate and hydraulic loading rate were underloaded. The parameters were evaluated and rectified, which further improved performance, increasing BOD5 removal, and possibly reducing operational cost.