Zero Discharge Performance of an Industrial Pilot-Scale Plant Treating Palm Oil Mill Effluent

Table 2

The characteristics of POME after the pretreatment.

Index	Raw influent	After oil-water separator tank	Average removal rate
Oil and grease (mg/L)	9023 ± 1104	4007 ± 704	55.6%
COD (mg/L)	79874 ± 9642	71179 ± 8811	10.9%

Note: all data are shown as means ± standard deviation of all samples.