Among the emerging issues in the field of wastewater treatments, reducing energy consumption and removal of new organic pollutants have become of primary concern. With respect to the first goal, alternating oxic/anoxic conditions in the bioreactor has demonstrated to be a feasible way to ensure the required efficiency of carbon and nitrogen removal along with energy saving. The aim of the present study was to investigate if these alternating oxic/anoxic conditions are also capable of boosting organic micropollutants degradation, by stimulating the appropriate enzymes. Three different aeration frequencies were tested in a laboratory scale activated sludge reactor and the effects evaluated in terms of removal of carbon, nitrogen and a mixture of OMPs (Sulfamethoxazole, Sulfadiazine, Lincomycin, Carbamazepine, Pyrazole, Naproxen, Atrazine and Sucralose). It was also evaluated if these aeration strategies could change the microbial community composition with respect to the control test conducted under continuous air supply. Among the tested strategies, the longest and shortest durations of anoxic conditions promoted the best removal for the majority of OMPs. This enhancement was statistically well correlated to the activity increase of Lignin Peroxidase and Cellulase enzymes whereas the microbial speciation did not change statistically. The same durations were also capable of maintaining high carbon and nitrogen removal rates within the same biological reactor.

在废水处理领域中出现的新问题中，降低能耗和去除新的有机污染物已成为首要问题。关于第一个目标，已经证明生物反应器中交替的有氧/无氧条件是确保所需除碳和除氮效率以及节能的可行方法。本研究的目的是研究这些交替的有氧/缺氧条件是否还能够通过刺激合适的酶来促进有机微污染物的降解。在实验室规模的活性污泥反应器中测试了三种不同的曝气频率，并根据去除碳，氮和OMP的混合物（磺胺甲恶唑，磺胺嘧啶，林可霉素，卡马西平，吡唑，萘普生，阿特拉津和三氯蔗糖）。相对于连续供气下进行的对照测试，还评估了这些通气策略是否可以改变微生物群落组成。在测试的策略中，最长和最短的缺氧条件持续时间促进了大多数OMP的最佳去除。这种增强在统计上与木质素过氧化物酶和纤维素酶的活性增加有很好的相关性，而微生物形态没有统计学上的变化。相同的持续时间还能够在相同的生物反应器内维持高的碳和氮去除率。缺氧条件的最长和最短持续时间促进了大多数OMP的最佳去除。这种增强在统计上与木质素过氧化物酶和纤维素酶的活性增加有很好的相关性，而微生物形态没有统计学上的变化。相同的持续时间还能够在相同的生物反应器内维持高的碳和氮去除率。缺氧条件的最长和最短持续时间促进了大多数OMP的最佳去除。这种增强在统计上与木质素过氧化物酶和纤维素酶的活性增加有很好的相关性，而微生物形态没有统计学上的变化。相同的持续时间还能够在相同的生物反应器内维持高的碳和氮去除率。