Constructed wetland using corncob charcoal substrate: pollutants removal and intensification
Liu, M; Li, B; Xue, Y; Wang, H; Yang, K
| HERO ID | 4132169 |
|---|---|
| In Press | No |
| Year | 2017 |
| Title | Constructed wetland using corncob charcoal substrate: pollutants removal and intensification |
| Authors | Liu, M; Li, B; Xue, Y; Wang, H; Yang, K |
| Journal | Water Science and Technology |
| Volume | 76 |
| Issue | 6 |
| Page Numbers | 1300-1307 |
| Abstract | To investigate the feasibility of using corncob charcoal substrate in constructed wetlands, four laboratory-scale vertical flow constructed wetlands (VFCWs) were built. Effluent pollutant (chemical oxygen demand (COD), NH4(+)-N, total phosphorus (TP)) concentrations during the experiment were determined to reveal pollutant removal mechanisms and efficiencies at different stages. In the stable stage, a VFCW using clay ceramisite substrate under aeration attained higher COD (95.1%), and NH4(+)-N (95.1%) removal efficiencies than a VFCW using corncob charcoal substrate (91.5% COD, 91.3% NH4(+)-N) under aeration, but lower TP removal efficiency (clay ceramisite 32.0% and corncob charcoal 40.0%). The VFCW with raw corncob substrate showed stronger COD emissions (maximum concentration 3,108 mg/L) than the corncob charcoal substrate (COD was lower than influent). The VFCW using corncob charcoal substrate performed much better than the VFCW using clay ceramisite substrate under aeration when the C/N ratio was low (C/N = 1.5, TN removal efficiency 36.89%, 4.1% respectively). These results suggest that corncob charcoal is a potential substrate in VFCWs under aeration with a unique self -supplying carbon source property in the denitrification process. |
| Doi | 10.2166/wst.2017.305 |
| Pmid | 28953456 |
| Wosid | WOS:000411845600002 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |