Microbial extracellular polymeric substances (EPS) acted as a potential reservoir in responding to high concentrations of sulfonamides shocks during biological wastewater treatment
Microbial extracellular polymeric substances (EPS) acted as a potential reservoir in responding to high concentrations of sulfonamides shocks during biological wastewater treatment
复制标题
微生物胞外聚合物（EPS）在生物废水处理过程中充当响应高浓度磺胺类药物冲击的潜在储存库
DOI：
10.1016/j.biortech.2020.123654
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发表时间：
2020
影响因子：
11.4
通讯作者：
Sheng Guo Ping
中科院分区：
文献类型：
--
作者：
Xu Juan;Sheng Guo Ping
胞外聚合物（EPS）是活性污泥的主要成分之一，它与污染物发生复杂反应，从而影响污染物在废水处理系统中的命运。在连续流膜生物反应器中，研究了EPS在抗磺胺乙嗪（SMZ）冲击中的作用。结果表明，在生物降解滞后阶段，活性污泥的EPS中能截获SMZ。EPS作为潜在的储层抵抗SMZ冲击，保证在流出物中检测不到SMZ。在SMZ冲击下EPS产量的增加提高了EPS与SMZ的结合能力。微生物EPS在去除磺胺类生物难降解污染物中的关键作用以前可能被低估了。
Extracellular polymeric substances (EPS), one of the main components of activated sludge, could complex with pollutants and thus influence their fate in wastewater treatment system. In this work, the roles of EPS in resisting sulfamethazine (SMZ) shocks were investigated in a continuous flow membrane bioreactor. Results show that SMZ could be intercepted in the EPS of activated sludge during the lag phase of biodegradation. EPS acted as a potential reservoir against SMZ shocks, guaranteeing undetectable SMZ in the effluent. The increased production of EPS in responding to SMZ shocks improved the binding capability of EPS to SMZ. The critical roles of microbial EPS in removing bio-refractory contaminants such as sulfonamides are probably underestimated previously.