多维度耦合丝状菌监测方法在污泥膨胀中的应用

发布时间：2018-06-22 10:57

本文选题：活性污泥 + 污泥膨胀　；参考：《中国给水排水》2017年15期

【摘要】：丝状菌过度生长诱发的活性污泥膨胀是影响城市污水处理厂正常运行的原因之一。活性污泥体积指数(SVI)是判断污泥膨胀过程的关键指标,但无法对膨胀本质——丝状菌的动态变化提供有效信息。在某大型城市污水处理厂完整污泥膨胀及实施膨胀控制策略的过程中,利用多维度耦合丝状菌监测方法对活性污泥性状、丝状菌种群及主要致膨丝状菌动态进行了跟踪监测,结果显示在以SVI划分的不同膨胀阶段,耦合监测方法不仅可以有效定性和定量丝状菌及其种群动态变化,同时对微丝菌(Microthrix parvicella)生长位置及生长状态的准确判定为膨胀整体进程判断及膨胀有效防控提供了直观、准确的微生物信息证据。定量PCR结果显示,耦合监测方法的定量结果不仅与分子生物学精确定量结果的趋势相一致,同时具有相对快速、现场可操作性强、成本低等优势,在我国城市污水处理厂实际污泥膨胀控制中具有重要的应用价值。
[Abstract]:The activated sludge bulking induced by the overgrowth of filamentous bacteria is one of the factors that affect the normal operation of urban sewage treatment plants. The activated sludge volume index (SVI) is the key index to determine the expansion process of the sludge, but it can not provide effective information on the dynamic changes of the essence of the bulking, and the expansion of the sludge in a large urban sewage treatment plant. In the process of expansion and expansion control strategy, the dynamic characteristics of activated sludge, filamentous species and main inflated filamentous bacteria were monitored by multidimensional coupling filamentous bacteria monitoring method. The results showed that the coupling monitoring method could not only effectively qualitative and quantify the filamentous bacteria and their population dynamics in the different expansion stages divided by SVI. At the same time, the accurate determination of the growth position and growth state of microfilament (Microthrix parvicella) provides visual, accurate microbiological information evidence for the judgment of the whole process of expansion and the effective prevention and control of expansion. Quantitative PCR results show that the quantitative results of the coupling monitoring method are not only with the trend of the accurate quantitative results of molecular biology. At the same time, it has the advantages of relatively fast, strong field operation and low cost, which has important application value in the actual sludge bulking control of urban sewage treatment plant in our country.
【作者单位】：中国科学院大学生态环境研究中心;北京北排水环境发展有限公司水质检测中心;国家研究委员会水研究中心;
【基金】：国家自然科学基金资助项目(51378489)
【分类号】：X703

【相似文献】