Wastewater Quality Characteristics Test in Domestic Wastewater Treatment Plant Dinas Lingkungan Hidup Kota Semarang

Abstract

The purpose of this study was analyze the characteristics of wastewater quality at the Domestic Wastewater Treatment Plant Dinas Lingkungan Hidup Kota Semarang. The research method is to test the parameters pH, BOD, COD, TSS, and Ammonia at the inlet and outlet. The test showed the average value of the waste quality parameters decreased after the treatment process, so that the average value of the parameters at the outlet smaller than inlet. The average value of the water quality parameters at the inlet with a pH value of 7,77, a BOD value of 14,5 mg/L, a COD value of 29,5 mg/L, a TSS value of 13 mg/L, and an Ammonia value of 0,0145 mg/L. The quality of the water samples at the outlet with a pH value of 7,62, a BOD value of 11,5 mg/L, a COD value of 25,5 mg/L, a TSS of 9 mg/L, and an Ammonia value of 0,0059 mg/L. Based on the test result, the quality of the wastewater meets the quality standard of Peraturan Menteri Lingkungan Hidup dan Kehutanan No.68 Tahun 2016. With this in mind, the wastewater from wastewater treatment is suitable for disposal into the environment.