The oil palm liquid waste is rich in TSS and ammonia and thus need to be processed before being flown to environment. A study aims to reduce the TSS and ammonia in that waste has been conducted in April - May 2018. The palm oil liquid waste (135 L) was kept in an anaerob system (with gravel, sand and palm fiber media) for 10 days. The waste was then flown to an aerobic system (with charcoal and…