Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.2175/106143012X13415215907293 |
| Title (Primary) | Response of removal rates to various organic carbon and ammonium loads in laboratory-scale constructed wetlands treating artificial wastewater |
| Author | Wu, S.; Kuschk, P.; Wiessner, A.; Kästner, M.; Pang, C.; Dong, R. |
| Source Titel | Water Environment Research |
| Year | 2013 |
| Department | UBT |
| Volume | 85 |
| Issue | 1 |
| Page From | 44 |
| Page To | 53 |
| Language | englisch |
| Keywords | acidification; constructed wetland; denitrification; dissimilatory sulfate reduction; nitrification; sulfide toxicity |
| UFZ wide themes | ru3 |
| Abstract | High levels (92 and 91%) of organic carbon were successfully removed from artificial wastewater by a laboratory-scale constructed wetland under inflow loads of 670 mg/m2•d (100 mg/d) and 1600 mg/m2d (240 mg/d), respectively. Acidification to pH 3.0 was observed at the low organic carbon load, which further inhibited the denitrification process. An increase in carbon load, however, was associated with a significant elevation of pH to 6.0. In general, sulfate and nitrate reduction were relatively high, with mean levels of 87 and 90%, respectively. However, inhibition of nitrification was initiated with an increase in carbon loads. This effect was probably a result of competition for oxygen by heterotrophic bacteria and an inhibitory effect of sulfide (S2−) toxicity (concentration approximately 3 mg/L). In addition, numbers of healthy stalks of Juncus effusus (common rush) decreased from 14 000 to 10 000/m2 with an increase of sulfide concentration, indicating the negative effect of sulfide toxicity on the wetland plants. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=13235 |
| Wu, S., Kuschk, P., Wiessner, A., Kästner, M., Pang, C., Dong, R. (2013): Response of removal rates to various organic carbon and ammonium loads in laboratory-scale constructed wetlands treating artificial wastewater Water Environ. Res. 85 (1), 44 - 53 10.2175/106143012X13415215907293 |
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