Palm oil mill effluent (POME) is characterized by very high chemical oxygen demand (COD) and total suspended solid (TSS) of 33,600 and 12,667 mg/l respectively, which require treatment to remove these parameters. Treatment with biological reactors such as two-stages UASB can be used, but after passing through the biological reactor process, POME still contain high COD and TSS concentration of 9…