Treatability Studies on the Optimization of Ozone and Carbon Dosages for the Effective Removal of Contaminants from Secondary Treated Effluent

Table 2

Physico-chemical characterization of feed water, treated water quality, and National standards for reuse and discharge of wastewater.

Parameter	Feed water (secondary effluent)	PSF	UF	O3	GAC	National standards
pH	7.47–7.65	7.30–7.37	7.11–7.12	6.43–6.52	6.29–6.33	5.5 to 9.0
TOC (mg/L)	80.2–137.9				0	—
COD (mg/L)	200–400				0	200
BOD5 (mg/L)	120.1–153.3				0	100
Turbidity (NTU)	3–4	2.6–2.7	2.9–1.1	0.5	0	10
TSS (mg/L)	12	9	5	2	0	200
TP (mg/L)	29	22	19	14	0	—