Zhao Jianguo, Chen Xiurong, Bao Linlin, Bao Zheng, He Yixuan, Zhang Yuying, Li Jiahui
State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, China; Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Eduaction, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang, 453007, China.
State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, China.
Chemosphere. 2016 Jun;153:138-45. doi: 10.1016/j.chemosphere.2016.01.086. Epub 2016 Mar 24.
The relationship between microbial diversity and sludge toxicity in the biotreatment of refractory wastewater was investigated. Synthetic wastewater containing 4-chlorophenol (4-CP) was treated by an activated sludge using a sequencing batch bioreactor (SBR). At the end of a single SBR cycle, a stable operation stage was reached when the 4-CP was not detected both in aqueous and sludge phases and the effluent COD was maintained at approximately 70 mg L(-1) for the blank and control sludge groups. Then, the diversity of the microorganisms and the sludge toxicity were measured. The results showed that the Microtox acute toxicity of the control sludge was higher than those of the blank sludge. The difference analysis of the microbial diversity between the blank and control sludge indicated that the sludge toxicity was closely related to microbial diversity.
研究了难降解废水生物处理过程中微生物多样性与污泥毒性之间的关系。采用序批式生物反应器（SBR），用活性污泥处理含4-氯酚（4-CP）的合成废水。在单个SBR周期结束时，当水相和污泥相中均未检测到4-CP且空白和对照污泥组的出水化学需氧量（COD）维持在约70 mg L(-1)时，达到稳定运行阶段。然后，测定微生物多样性和污泥毒性。结果表明，对照污泥的Microtox急性毒性高于空白污泥。空白污泥和对照污泥之间微生物多样性的差异分析表明，污泥毒性与微生物多样性密切相关。
