Table 1.

Main Characteristics of the secondary wastewater.

No	Parameter	Unit	Value
1	BOD5	mg/L	15–20
2	COD	mg/L	10–20
3	NTU	Mg/L	5–12
4	NH3-N	mg/L	4–5
5	TOC	mg/L	13–16
6	NO2-N	mg/L	0.6–0.8
7	TN	mg/L	33–36
8	PO43−3	mg/L	18–20
9	TDS	mg/L	1200
10	pH	–	7–7.5