Table 1 Average physico chemical quality of primary treated sewage used for the study
Parameter (in mg L− 1 unless specified) | Primary treated sewage Mean ± standard deviation (minimum-maximum) |
|---|---|
pH [no unit] | 7.8–8.7 |
Temp [°C] | 29.3 ± 1.1 (29.1–30.2) |
Conductivity [μS cm−1] | 1133 ± 35 (1083–1193) |
TDS | 566 ± 17 (501–597) |
Chloride | 52 ± 0.59 (51–54) |
BOD | 370 ± 19 (358–387) |
COD | 473 ± 26 (453–498) |
NO3—N | 43 ± 2.1 (32–45) |
PO4−−−-P | 13 ± 0.5 (12–15.9) |
NH4+ | 42 ± 0.1 (34–40) |
Total coliform [CFU 100 mL− 1] | 3 × 106 |
Fecal coliform [CFU 100 mL− 1] | 2 × 105 |
E. coli [CFU 100 mL− 1] | 3 × 104 |