Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1039/c7ew00341b
Volltext Akzeptiertes Manuskript
Titel (primär) Application of cell-based bioassays to evaluate treatment efficacy of conventional and intensified treatment wetlands
Autor Nivala, J.; Neale, P.A.; Haasis, T.; Kahl, S.; König, M.; Müller, R.A.; Reemtsma, T.; Schlichting, R.; Escher, B.I.
Journal / Serie Environmental Science-Water Research & Technology
Erscheinungsjahr 2018
Department ANA; ZELLTOX; UBZ
Band/Volume 4
Heft 2
Seite von 206
Seite bis 217
Sprache englisch
UFZ Querschnittsthemen RU2;
Abstract Constructed wetlands are commonly used for wastewater treatment when centralized sewage treatment is not feasible. Many studies have focused on the removal of micropollutants by treatment wetlands, but little is known about how well they can remove biological activity. Here we studied the removal efficacy of conventional and intensified treatment wetland designs using both chemical analysis of conventional wastewater parameters and treatment indicator chemicals (caffeine, ibuprofen, naproxen, benzotriazole, diclofenac, acesulfame, carbamazepine) as well as a panel of in vitro bioassays indicative of different stages of cellular toxicity pathways, such as xenobiotic metabolism, receptor-mediated effect and adaptive stress responses. Water samples collected before and after seven treatment wetlands were compared against the adjacent municipal wastewater treatment plant. The intensified treatment wetlands generally removed micropollutants and biological activity to a greater extent than the conventional wastewater treatment plant, whereas the conventional horizontal subsurface flow wetland showed poor removal of all indicators. Carbamazepine was not well removed by any of the studied systems as expected from reported recalcitrance in aerobic environments. Estrogenic activity, which is a commonly used biological endpoint indicator for wastewater treatment, was removed very well by the intensified wetlands (97 to 99.5%) with similar or slightly lower removal efficacy for all other biological endpoints. The results highlight the importance of applying indicator bioassays complementary to indicator chemical analysis for monitoring treatment efficacy. The high removal efficacy of biological effects as a measure of total effect-scaled concentrations of chemicals provides further support to the use of intensified wetlands for wastewater treatment.
dauerhafte UFZ-Verlinkung
Nivala, J., Neale, P.A., Haasis, T., Kahl, S., König, M., Müller, R.A., Reemtsma, T., Schlichting, R., Escher, B.I. (2018):
Application of cell-based bioassays to evaluate treatment efficacy of conventional and intensified treatment wetlands
Environ. Sci.-Wat. Res. Technol. 4 (2), 206 - 217