Skip to main content

Table 1 The influent and effluent water qualities of WWTPs

From: Activated sludge bacterial communities of typical wastewater treatment plants: distinct genera identification and metabolic potential differential analysis

WWTPs (process) BOD (mg/L) COD (mg/L) T-N (mg/L) T-N removal NH4+–N removal Influent B/C Influent COD/T-N Influent COD/NH4+–N Remarks
Qige WWTP (A/A/O)
 Influent 180–220 450–550 26.42 68.50% 94% 0.47 > 9.09 16.67 Domestic sewage treatment
 Effluent 2.5–7.5 13–35 8.3
Shangyu WWTP (A/O)
 Influent 120–160 400–450 35–40 50.00% 95.40% 0.32 11.3 12.96 Fine chemical industry wastewater
 Effluent 10–15 80–92 16–21
Shaoxing WWTP-I (A/O)
 Influent 137–160 633–661 74 42.30% 99.25% 0.23 4.9 9.3 Textile dyeing industry wastewater
 Effluent 2.13–13 60–65 42.7
Shaoxing WWTP-II (oxidation ditch)
 Influent 104–211 462–688 73.6 34.40% 97.50% 0.274 6.6 10.55
 Effluent 9.7–12.5 54–154 48.3
Shaoxing WWTP-III (oxidation ditch)
 Influent The same with Shaoxing 39.86% 99.25% 0.23 4.9 9.3
 Effluent 2.13–13 60–65 44.5
  1. WWTP-I, the first phase project; WWTP-II, the second phase project; WWTP-II, the third phase project; BOD, Biological Oxygen Demand (mg/l); COD, chemical oxygen demand (mg/l); T-N, total nitrogen concentration (mg/l); T-P, total phosphorus concentration; NH4+–N, ammonium nitrogen