从废水中去除卡马西平及在浸没式正向渗透膜生物反应器中的降解机制。
Carbamazepine removal from wastewater and the degradation mechanism in a submerged forward osmotic membrane bioreactor.
机构信息
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
出版信息
Bioresour Technol. 2020 Oct;314:123732. doi: 10.1016/j.biortech.2020.123732. Epub 2020 Jun 25.
A submerged forward osmotic membrane bioreactor (FOMBR) was used to reveal the removal and degradation mechanism of carbamazepine (CBZ) from wastewater. The results showed that the removal mechanism consisted of the rejection of the forward osmotic (FO) membrane and biodegradation of the activated sludge. The removal efficiencies of COD, NH-N, and CBZ by the FOMBR were approximately 94.77%-97.45%, 93.56%-99.28%, and 88.20%-94.45%, respectively. Moreover, the COD and NH-N removal efficiencies were positively correlated with the increased CBZ concentrations. The results of the soluble microbial products (SMP) and extracellular polymeric substances (EPS) tests illustrated that the membrane fouling potential of EPS may be higher than that of SMP. According to the identified 14 degradation products, oxidation, hydroxylation, and decarboxylation were defined as the primary CBZ degradation mechanism. In addition, the RNA results showed that Delftia could be the characteristic bacteria in the CBZ degradation process.
采用淹没式正向渗透膜生物反应器（FOMBR）揭示了废水中卡马西平（CBZ）的去除和降解机制。结果表明，去除机制包括正向渗透（FO）膜的排斥和活性污泥的生物降解。FOMBR 对 COD、NH-N 和 CBZ 的去除效率分别约为 94.77%-97.45%、93.56%-99.28%和 88.20%-94.45%。此外，COD 和 NH-N 的去除效率与 CBZ 浓度的增加呈正相关。可溶性微生物产物（SMP）和胞外聚合物（EPS）测试的结果表明，EPS 的膜污染潜力可能高于 SMP。根据鉴定出的 14 种降解产物，氧化、羟基化和脱羧被定义为 CBZ 的主要降解机制。此外，RNA 结果表明，Delftia 可能是 CBZ 降解过程中的特征细菌。
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