Performance Evaluation of Faecal Sludge Treatment Plant

Abstract

Local Domestic Wastewater Management System (SPALD-S) is widely used in Indonesia, septic tank is one of the components of SPALD-S that treats fecal sludge on-site. Furthermore, fecal sludge from septic tanks needs to be treated in the Fecal Sludge Treatment Plant (IPLT). IPLT Sidokumpul is the only IPLT in Lamongan Regency. It is known that the sludge influent has not fulfilled the planning design capacity of 20 m3 ^/ day. The results of laboratory analysis on the quality of wastewater from IPLT, show that some parameters have not met the quality standards based on the PERMENLHK Number 68 of 2016. This study aims to assess the performance of IPLT Sidokumpul so that the effluent meets quality standards and review the strategy so that the volume of fecal sludge influent meets the planned design capacity. This study was held to evaluate the technical aspects including the production of fecal sludge in the service area, characterization of fecal sludge, service analysis, and the performance of the IPLT Sidokumpul unit processes. To evaluate, the authors use a questionnaire, primary data, and secondary data. The temporary results of evaluating the technical aspects of sludge production are still 0.31 liters/person/day, which is still below the planning design, which is 0.5 liters/person/day. The fecal sludge characteristic is still in the typical fecal sludge range. The service performance is planned to be 60% of the service area but based on existing conditions it is only 5%. Furthermore, it is found that the efficiency of the facultative pond needs to be optimized since it is the one with the lowest removal efficiency and the range of each pollutant removal is below the typical.