Treatment of performance evaluation at Cisauk water treatment plant, Cisauk Sub-district, Tangerang

Abstract

Cisauk Water Treatment Plant (WTP) is one of the water treatment plants operated by PDAM Tirta Kerta Raharja, Tangerang District, which supply drinking water for Sub districts of Cisauk and Suradita with a capacity of 50 L/sec. This research conducted to evaluate the treatment performance of each unit at Cisauk WTP and compare the quality of water produced with the drinking water standard of PERMENKES No. 492 of 2010. Evaluation of WTP process is conducted by analysing the quantity and quality of produced water, and then calculate of design parameter for each unit. The processing unit consists of intake, hydraulic coagulation, hydraulic flocculation, sedimentation, filtration and ground reservoir. The coagulant used was NUSACHEM with dose of 35 mg/L and the disinfectant used was gas and liquid chlorine with dose of 3-5 mg/L. Through the WTP evaluation of treatment, not all units fulfil the design criteria based on SNI 6774 of 2008. However, the quality of the water produced fulfil the drinking water quality requirements of PERMENKES No. 492 of 2010.