Details zur Publikation

Referenztyp Zeitschriften
DOI / URL Link
Titel (primär) Response of removal rates to various organic carbon and ammonium loads in laboratory-scale constructed wetlands treating artificial wastewater
Autor Wu, S.; Kuschk, P.; Wiessner, A.; Kästner, M.; Pang, C.; Dong, R.;
Journal / Serie Water Environment Research
Erscheinungsjahr 2013
Department UBT;
Band/Volume 85
Heft 1
Sprache englisch;
POF III (gesamt) T41;
Keywords acidification; constructed wetland; denitrification; dissimilatory sulfate reduction; nitrification; sulfide toxicity
UFZ Querschnittsthemen 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.

ID 13235
dauerhafte UFZ-Verlinkung http://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