Year: 2025 | Month: December | Volume: 12 | Issue: 12 | Pages: 54-62
DOI: https://doi.org/10.52403/ijrr.20251207
Removal Efficiency of BOD, COD and TSS from Tofu Wastewater Using an Anaerobic System
Aisyah Puteri Azzahra1, Mijani Rahman2, Yunandar3, Susilawati4
1,2,3,4Masters in Natural Resources & Environment Management, Post-Graduate Program, Lambung Mangkuat University, Banjarbaru, South Kalimantan. Indonesia.
Corresponding Author: Aisyah Puteri Azzahra
ABSTRACT
Tofu industry is one of the agroindustrial sectors that generates wastewater, which can potentially cause environmental pollution if not properly managed. The high organic content in tofu wastewater can be treated using an anaerobic system that produces biogas. One of tofu industry in Banjarbaru City, South Kalimantan, has implemented a biogas system as an effort to treat its wastewater; however, the effectiveness of the treatment is still not optimal. Therefore, this study aims to analyze the quality of tofu wastewater before (influent) and after (effluent) anaerobic treatment, as well as its effectiveness in reducing pollutant parameters. The method used involves laboratory analysis of pH, TSS, BOD, and COD. The research data were processed, analyzed, and presented quantitatively in a descriptive manner. The results show that the wastewater discharge from the tofu industry reached 11.162 liters per day. The influent quality of tofu wastewater contained pH 4,15, TSS 732,5 mg/L, BOD 4.194,7 mg/L, and COD 10.564,7 mg/L. After treatment, the effluent quality improved to pH 7,265, TSS 128 mg/L, BOD 333,6 mg/L, and COD 2.112,9 mg/L. The pollutant load of the influent contained COD 57,2 kg/ton, BOD 144,3 kg/ton, and TSS 10 kg/ton. After anaerobic treatment, the effluent contained BOD 4,6 kg/ton, COD 28,9 kg/ton, and TSS 1,8 kg/ton. The removal efficiencies of TSS, BOD, and COD were 82,5%, 92%, and 80%, respectively.
Keywords: Anaerobic System, Pollutant Load, Removal Efficiency, Tofu Wastewater
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