Table 1 Physico-chemical properties of POME FD (treatment) and rain water (control).

Parameter	Unit	POME FD	Rain water
BOD	mg/L	36.50 ± 6.24^a	1.62 ± 0.01^b
COD	mg/L	987.17 ± 4.01^a	3.70 ± 0.01^b
pH	—	8.72 ± 0.35^a	7.59 ± 0.32^b
TSS	mg/L	37.63 ± 3.71	n.d.
Colour	PtCo	590.00 ± 9.48^a	1.30 ± 0.92^b
Total Kjeldhal nitrogen (TKN)	mg/L	153.25 ± 0.50^a	2.09 ± 0.02^b

^a,bMean significant differences at p-value < 0.0001, according to Duncan’s Multiple Range Test. *n.d. = not detected.

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