Kombinasi Pengolahan Anaerob dan Membran Ultrafiltrasi Berbahan Polipropilen Untuk Proses Pengolahan Limbah Cair Kelapa Sawit

Abstract

Palm oil wastewater of PTPN V potentially contaminating environment if we can’t handle correctly. The result of analysis showed that acidic pH’s value 4.0, the value of COD is 30,000 mg/L and TSS value is 8635 mg/L. This value is not in accordance with the decree of minister Environment number 51 of 1995 for pH values were in the range 6-9, for a COD value is 500 mg/L and TSS value is 300 mg/L. Research was done to reduce the value of that parameters to fit the provisions of the Government of Indonesia. Process carried out is anaerobic process. Problems that arise in this process is the washout of biomass so that was developed by combining anaerobic digestion process with membrane ultrafiltration. Anaerobic process carried out several stages, the seeding stage, acclimatization, startup and operational. pH values obtained in the final stage anaerobic process that is equal to 8.7, COD is 5000 mg/L with an efficiency of COD is 66.67% and TSS is 1510 mg/L. The results of the anaerobic process is passed through a membrane with pressure variation is 1.6 bar , 1.8 bar, and 2.0 bar. The best pressure is 1.8 bar with a pH value is 8.5, the value of COD is 2000 mg/L with an efficiency COD is 60% and TSS is 20 mg/L with an efficiency of TSS is 98.67%