Abstract：
Simultaneous contaminants of emerging concern (CECs) removal and wild microorganisms\' inactivation was evaluated by applying solar photoelectro-Fenton (SPEF) process in actual secondary effluent collected from a real municipal wastewater treatment plant (MWWTP). 20 L of a mixture of four CECs was used as model pollutants (200 μg/L of acetaminophen, caffeine, sulfamethazine, and sulfamethoxazole each one). The SPEF process was carried out on fully sunny days, at circumneutral pH using the complex Fe3+-EDDS, in a solar electrochemical - raceway pond reactor (SEC-RPR). Initially, the optimal conditions for CECs degradation were determined using a response surface model based on current density, iron complex concentration and Fe3+-EDDS addition time (to allow previous accumulation of H2O2) as model inputs. A current density of 24.6 mA/cm2, a Fe3+-EDDS complex concentration of 0.089 mM and 3.8 min of previous H2O2 accumulation were the resulting optimum conditions that were afterwards applied for the simultaneous degradation of the CECs synthetic mixture and wild microorganisms inactivation in actual secondary effluent. About 85% CECs removal and complete E. coli inactivation were achieved in 30 min, approximately, while E. faecalis and total coliforms could be inactivated under detection limit in 60 min and 75 min, respectively.
摘要：
通过在从实际市政污水处理厂（MWWTP）收集的实际二级废水中应用太阳能光电Fenton（SPEF）工艺，评估了同时出现的污染物（CEC）去除和野生微生物的灭活。使用20L的四种CEC的混合物作为模型污染物（200μg/L的对乙酰氨基酚，咖啡因,磺胺二甲嘧啶,和磺胺甲恶唑各一种）。SPEF过程是在阳光充足的日子里进行的，在周围中性pH下，使用络合物Fe3+-EDDS，在太阳能电化学-跑道池反应器(SEC-RPR)中。最初，使用基于电流密度的响应面模型确定了CECs降解的最佳条件，铁络合物浓度和Fe3+-EDDS添加时间（允许先前积累H2O2）作为模型输入。24.6mA/cm2的电流密度，0.089mM的Fe3-EDDS复合物浓度和3.8分钟的先前H2O2积累是最终的最佳条件，随后将其应用于同时降解CECs合成混合物和野生微生物灭活在实际的二级流出物中。在30分钟内实现了约85％的CECs去除和完全的大肠杆菌灭活，大约,而粪肠球菌和总大肠杆菌在60分钟和75分钟的检测限下可以灭活，分别。
