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Table 2

Variance analysis of urban wastewater characteristics

ParameterspHECTSSCODBOD5TKNTPAbs. UV 254 nm
Greywater 7.85 ± 0.11ab 1,071 ± 91ab 176 ± 17b 265 ± 24c 122 ± 9c 20.73 ± 2.06bc 7.74 ± 0.95b 0.141 ± 0.019c 
Blackwater 7.63 ± 0.06bc 1,596 ± 180a 2,404 ± 237a 2,513 ± 225a 1,520 ± 138a 58.24 ± 7.68a 12.60 ± 2.12b 0.168 ± 0.013c 
Commercial Laundry Wastewater 8.42 ± 0.15a 1,099 ± 130ab 156 ± 23b 419 ± 86bc 120 ± 24c 29.87 ± 5.42ab 88.64 ± 8.60a 0.766 ± 0.143ab 
Hospital Wastewater 7.48 ± 0.19bc 1,025 ± 133ab 387 ± 106b 486 ± 49b 223 ± 56c 29.58 ± 4.68ab 8.55 ± 1.55b 0.275 ± 0.018b 
Pharmaceutical Wastewater 6.90 ± 0.35c 680 ± 100b 1,322 ± 223a 5,912 ± 1,026a 718 ± 168b 11.32 ± 1.72c 5.00 ± 0.82b 2.667 ± 0.327a 
p value *** *** *** *** *** *** *** *** 
ParameterspHECTSSCODBOD5TKNTPAbs. UV 254 nm
Greywater 7.85 ± 0.11ab 1,071 ± 91ab 176 ± 17b 265 ± 24c 122 ± 9c 20.73 ± 2.06bc 7.74 ± 0.95b 0.141 ± 0.019c 
Blackwater 7.63 ± 0.06bc 1,596 ± 180a 2,404 ± 237a 2,513 ± 225a 1,520 ± 138a 58.24 ± 7.68a 12.60 ± 2.12b 0.168 ± 0.013c 
Commercial Laundry Wastewater 8.42 ± 0.15a 1,099 ± 130ab 156 ± 23b 419 ± 86bc 120 ± 24c 29.87 ± 5.42ab 88.64 ± 8.60a 0.766 ± 0.143ab 
Hospital Wastewater 7.48 ± 0.19bc 1,025 ± 133ab 387 ± 106b 486 ± 49b 223 ± 56c 29.58 ± 4.68ab 8.55 ± 1.55b 0.275 ± 0.018b 
Pharmaceutical Wastewater 6.90 ± 0.35c 680 ± 100b 1,322 ± 223a 5,912 ± 1,026a 718 ± 168b 11.32 ± 1.72c 5.00 ± 0.82b 2.667 ± 0.327a 
p value *** *** *** *** *** *** *** *** 

a, b and c: Mean with the same letter in a row are statistically not significant at P<0.05

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