Abstract
To control environmental pollution, the Wastewater Treatment Plant (WWTP) plays a vital role in treating wastewater to comply with quality standards before being discharged into the environment. However, not all WWTPs have worked optimally, so the periodic evaluations must be carried out to determine problems and what efforts can be made to improve WWTP processing quality. This study aims to evaluate the Jababeka 1 WWTP, which functions to treat wastewater in Industrial Area 1 and Industrial Area 7, which are in the Jababeka Industrial Estate (KIJ). Evaluation is carried out by comparing the actual processing efficiency with the related literature. Evaluation is also carried out by simulating the process and operation of WWTP using STOAT software. STOAT is one of the WWTP system modeling software mostly used to predict the wastewater treatment plant’s performance. The test results show that for the efficiency of Jababeka 1, WWTP removal for parameters BOD, COD, and TSS are 90%, 93.02%, and 96.12%. Based on the data obtained, modeling based on sensitivity analysis was also carried out using STOAT software to determine the most significant WWTP performance parameters. It was found that the wastewater discharge was the most critical parameter affecting the removal efficiency of TSS and BOD.
Highlights
According to the 2018 Environmental Statistics data, all rivers in Indonesia are polluted in light, moderate, and heavily polluted based on the criteria for river water quality in Government Regulation Number 82 of 2001 concerning Water Quality Management and Water Pollution Control with class II category [1]
This study aims to evaluate the removal efficiency and the operating parameters of Jababeka 1 WWTP
When compared with the standard efficiency that should be owned by WWTP, Jababeka 1 WWTP has just met the efficiency value for Chemical Oxygen Demand (COD) parameters of 93%
Summary
According to the 2018 Environmental Statistics data, all rivers in Indonesia are polluted in light, moderate, and heavily polluted based on the criteria for river water quality in Government Regulation Number 82 of 2001 concerning Water Quality Management and Water Pollution Control with class II category [1]. The Wastewater Treatment Plant or WWTP is a facility with a combination of processing units (mechanical, physical, chemical, and biological) used to remove pollutants in wastewater to meet applicable regulatory quality standards [2]. WWTP operators need to understand their WWTP's behavior, especially when facing fluctuations in the quality and quantity of wastewater input. WWTP behavior can be modeled and predicted by computer software. STOAT (Sewage Treatment Operation and Analysis over Time) is an example of a free wastewater treatment system modeling software. Using STOAT, users can design a wastewater treatment plant system, determine how each unit is connected and operated, and predict the wastewater treatment plant's performance in a specified time [5]
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