Institute of Water Quality, Resources and Waste Management, Vienna University of Technology, Karlsplatz 13/226, 1040 Vienna, Austria.
Environ Pollut. 2010 May;158(5):1399-404. doi: 10.1016/j.envpol.2009.12.038. Epub 2010 Jan 20.
The design criteria for wastewater treatment plants (WWTP) and the sludge retention time, respectively, have a significant impact on micropollutant removal. The upgrade of an Austrian municipal WWTP to nitrogen removal (best available technology, BAT) resulted in increased elimination of most of the analyzed micropollutants. Substances, such as bisphenol-A, 17alpha-ethinylestradiol and the antibiotics erythromycin and roxithromycin were only removed after the upgrade of the WWTP. Nevertheless, the BAT was not sufficient to completely eliminate these compounds. Thus, a pilot scale ozonation plant was installed for additional treatment of the effluent. The application of 0.6 g O(3) g DOC(-1) increased the removal of most of the micropollutants, especially for compounds that were not degraded in the previous biological process, as for example carbamazepine and diclofenac. These results indicated that the ozonation of WWTP effluent is a promising technology to further decrease emissions of micropollutants from the treatment process.
污水处理厂（WWTP）的设计标准和污泥停留时间分别对去除微量污染物有重大影响。奥地利一个城市 WWTP 的脱氮升级（最佳可用技术，BAT）导致大多数分析的微量污染物的去除率增加。一些物质，如双酚 A、17α-乙炔雌二醇以及抗生素红霉素和罗红霉素，只有在 WWTP 升级后才被去除。然而，BAT 不足以完全去除这些化合物。因此，安装了一个中试规模的臭氧处理装置，对出水进行额外处理。应用 0.6 g O(3) g DOC(-1) 提高了大多数微量污染物的去除率，特别是对在前一生物处理过程中未降解的化合物，如卡马西平和双氯芬酸。这些结果表明，对 WWTP 出水进行臭氧处理是一种很有前途的技术，可以进一步减少处理过程中微量污染物的排放。
