Monitoring benzotriazoles: a 1 year study on concentrations and removal efficiencies in three different wastewater treatment plants
| العنوان: | Monitoring benzotriazoles: a 1 year study on concentrations and removal efficiencies in three different wastewater treatment plants |
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| المؤلفون: | Elisabeth Müller, Harald Horn, Brigitte Helmreich, Bastian Herzog, Hilde Lemmer |
| المصدر: | Water Science and Technology. 69:710-717 |
| بيانات النشر: | IWA Publishing, 2013. |
| سنة النشر: | 2013 |
| مصطلحات موضوعية: | Time Factors, Environmental Engineering, Sewage, Triazoles, Contamination, Biodegradation, Membrane bioreactor, Waste Disposal, Fluid, Upstream and downstream (DNA), Bioreactors, Activated sludge, Rivers, Aquatic environment, Environmental chemistry, Environmental science, Sewage treatment, Effluent, Water Pollutants, Chemical, Water Science and Technology |
| الوصف: | Benzotriazole (BTri), 4- and 5-tolyltriazole (4-TTri, 5-TTri) were monitored over 1 year in three wastewater treatment plants (WWTPs) with a membrane bioreactor (MBR-MH) and two conventional activated sludge systems (CAS-E, CAS-M). The influent/effluent concentrations and treatment stages removal efficiencies were monitored. 5-TTri was removed best (mean removal 80%) in the WWTP mainly by biodegradation followed by BTri (mean removal 45%) and 4-TTri (mean removal 15%) that showed a significant lower elimination. High removal fluctuations for all three benzotriazoles occurred over the four seasons with lowest removal during winter. All three WWTPs constituted a point source for BTs in the aquatic environment as concentration measurements in the receiving rivers upstream and downstream of the WWTP proved. While MBR-MH and CAS-M significantly increased the downstream concentrations, CAS-E only slightly increased the downstream concentrations as the receiving river was already contaminated with benzotriazoles from hydropower. 5-TTri was detected in lowest concentrations due to its good removal compared to BTri and 4-TTri that contribute to high effluent concentrations with the potential to accumulate due to insufficient self-purification. |
| تدمد: | 1996-9732 0273-1223 |
| DOI: | 10.2166/wst.2013.766 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ac49717d6d873936ca895fa5bbcaa75 https://doi.org/10.2166/wst.2013.766 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....6ac49717d6d873936ca895fa5bbcaa75 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19969732 02731223 |
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| DOI: | 10.2166/wst.2013.766 |