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Table 5

Performance of the aeration tank (AT) for removing the key environmental contaminants

Measured parameterInOutExpected design efficiency (%)Actual AT efficiency (%)
BOD5 (mg/L) 320 ± 27 155 ± 23 56.4 51.6 
COD (mg/L) 1,312 ± 86 624 ± 81 66.1 52.4 
TSS (mg/L) 2,860 ± 284 1,040 ± 154 60.5 63.6 
(mg/L) 550 ± 18 285 ± 6 29.4 48.2 
Fecal coliform (CFU/100 mL) 19,333 ± 482 10,324 ± 273 38.9 46.6 
(mg/L) 82.9 ± 10.7 34.6 ± 6.8 56.2 58.3 
NH3 (mg/L) 315.0 ± 58 105.5 ± 12.8 63.1 66.5 
Turbidity (NTU) 4,020 ± 144 1,934 ± 96 56.7 51.9 
Measured parameterInOutExpected design efficiency (%)Actual AT efficiency (%)
BOD5 (mg/L) 320 ± 27 155 ± 23 56.4 51.6 
COD (mg/L) 1,312 ± 86 624 ± 81 66.1 52.4 
TSS (mg/L) 2,860 ± 284 1,040 ± 154 60.5 63.6 
(mg/L) 550 ± 18 285 ± 6 29.4 48.2 
Fecal coliform (CFU/100 mL) 19,333 ± 482 10,324 ± 273 38.9 46.6 
(mg/L) 82.9 ± 10.7 34.6 ± 6.8 56.2 58.3 
NH3 (mg/L) 315.0 ± 58 105.5 ± 12.8 63.1 66.5 
Turbidity (NTU) 4,020 ± 144 1,934 ± 96 56.7 51.9 
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