Rapid nitrification process upgrade coupled with succession of the microbial community in a full-scale municipal wastewater treatment plant (WWTP)
Liu, F; Hu, X; Zhao, X; Guo, H; Zhao, Y; Jiang, B
| HERO ID | 4736114 |
|---|---|
| In Press | No |
| Year | 2018 |
| Title | Rapid nitrification process upgrade coupled with succession of the microbial community in a full-scale municipal wastewater treatment plant (WWTP) |
| Authors | Liu, F; Hu, X; Zhao, X; Guo, H; Zhao, Y; Jiang, B |
| Journal | Bioresource Technology |
| Volume | 249 |
| Page Numbers | 1062-1065 |
| Abstract | Bioaugmentation was used to upgrade the nitrification process in a full-scale municipal WWTP with an A2/O system. A mixture of nitrifying bacteria was inoculated into the bioreactor for a final concentration of 1% (v/v). The upgrade process took 25 days, and the NH4+-N removals reached 94.6% (increased at least by 75%). The effluent concentrations of COD and NH4+-N stabilized at <30 mg/L and <4 mg/L even when the corresponding influent concentrations were over 300 mg/L and 60 mg/L, which met the first-class requirement of the National Municipal Wastewater Discharge Standards of China (COD ≤ 50 mg/L, NH4+-N ≤ 5 mg/L). The succession of the microbial community showed the enhanced NH4+-N removal efficiency mainly resulted from the persistence of introduced ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB), which increased from 0% to 0.4% and from 0.01% to 2.1%, respectively. This bioaugmentation was shown as an effective technology for upgrading or retrofitting conventional systems to tertiary-level. |
| Doi | 10.1016/j.biortech.2017.10.076 |
| Pmid | 29100680 |
| Wosid | WOS:000425764100136 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |