Departament d'Enginyeria Química, Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Spain.
Water Res. 2013 Sep 15;47(14):5200-10. doi: 10.1016/j.watres.2013.06.007. Epub 2013 Jun 12.
The constant detection of pharmaceuticals (PhACs) in the environment demonstrates the inefficiency of conventional wastewater treatment plants to completely remove them from wastewaters. So far, many studies have shown the feasibility of using white rot fungi to remove these contaminants. However, none of them have studied the degradation of several PhACs in real urban wastewater under non-sterile conditions, where mixtures of contaminants presents at low concentrations (ng L(-1) to μg L(-1)) as well as other active microorganisms are present. In this work, a batch fluidized bed bioreactor was used to study, for the first time, the degradation of PhACs present in urban wastewaters at their pre-existent concentrations under non-sterile conditions. Glucose and ammonium tartrate were continuously supplied as carbon and nitrogen source, respectively, and pH was maintained at 4.5. Complete removal of 7 out of the 10 initially detected PhACs was achieved in non-sterile treatment, while only 2 were partially removed and 1 of the PhACs analyzed increased its concentration. In addition, Microtox test showed an important reduction of toxicity in the wastewater after the treatment.
环境中不断检测到药品（PhACs）表明传统废水处理厂无法完全去除废水中的这些物质。到目前为止，许多研究已经表明，使用白腐真菌去除这些污染物是可行的。然而，它们都没有在非无菌条件下，在真实的城市废水中研究多种 PhACs 的降解情况，在非无菌条件下，混合物中的污染物浓度较低（ng L(-1) 到 μg L(-1))，同时还有其他活性微生物存在。在这项工作中，首次使用批式流化床生物反应器在非无菌条件下，在其原有浓度下研究了城市废水中 PhACs 的降解情况。葡萄糖和酒石酸铵分别连续作为碳源和氮源供应，并且 pH 值维持在 4.5。在非无菌处理中，10 种最初检测到的 PhACs 中有 7 种完全去除，而只有 2 种部分去除，且分析的 1 种 PhACs 浓度增加。此外，微毒测试表明废水在处理后毒性有重要降低。
