Matamoros Víctor, García Joan, Bayona Josep M
Department of Environmental Chemistry, IIQAB-CSIC, Jordi Girona 18-26, E-08034 Barcelona, Spain.
Water Res. 2008 Feb;42(3):653-60. doi: 10.1016/j.watres.2007.08.016. Epub 2007 Aug 24.
The mass emission rate of 12 pollutants from a wastewater treatment plant (WWTP) secondary effluent into a small tributary of the River Besòs (northeastern Spain) was determined. The pollutants tested included pharmaceutical and personal care products (PPCPs) and herbicides. Furthermore, a 1-ha surface flow constructed wetland (SFCW) was evaluated for pollution removal. Whereas the low concentration values (ngL(-1)) of PPCP discharge into the tributary was comparable to inter- and intra-campaigns, herbicides and a veterinary drug (flunixin) exhibited a high variability in concentrations (microgL(-1)). Moreover, removal efficiencies were often higher than 90% for all compounds, with the exception of carbamazepine and clofibric acid (ca. 30-47%). As expected, a seasonal trend of pollutant removal in the wetland was observed for compounds with low biodegradation and moderate photodegradation rates (i.e. naproxen and diclofenac).
测定了一座污水处理厂二级出水排入西班牙东北部贝索斯河一条小支流中的12种污染物的质量排放率。所检测的污染物包括药品和个人护理产品（PPCPs）以及除草剂。此外，还评估了一个面积为1公顷的表面流人工湿地（SFCW）的污染去除效果。排入支流的PPCP浓度值较低（ngL(-1)），在不同监测期间和同一监测期间内具有可比性，而除草剂和一种兽药（氟尼辛）的浓度则表现出高度变异性（microgL(-1)）。此外，除卡马西平和氯贝酸（约30 - 47%）外，所有化合物的去除效率通常都高于90%。正如预期的那样，对于生物降解率低和光降解率中等的化合物（即萘普生和双氯芬酸），在湿地中观察到了污染物去除的季节性趋势。
