Biomethanation of palm oil mill effluent (pome) by ultrasonic membrane anaerobic system (umas) using pome as substrate

摘要

The direct discharge of the Palm Oil Mill Effluent (POME) wastewater causes serious environmental pollution due to its high chemical oxygen demand (COD), total suspended solid (TSS) and biological oxygen demand (BOD). The conventional ways for POME wastewater treatment have both economical and environmental disadvantages. In this study, the potential of ultrasonic-assisted membrane anaerobic system (UMAS) was evaluated as alternative and cost effective method for treating POME wastewater to avoid fouling. The UMAS treatment efficiency was greatly improved by UMAS introduction. The membrane fouling and polarization at the membrane surface was significantly reduced. This research had proved that UMAS is the effective way to treat POME. The removal efficiency of COD was 95% with HRT of 6 days. The BOD removal efficiency was 71.59% while TSS removal rate was from 91 to 99.5%.The methane gas production efficiency was 94.14%.The UMAS treatment efficiency was greatly improved by UMAS introduction. The membrane fouling and polarization at the membrane surface was significantly reduced. This research had achieved the objectives by resolve the problem statement