无锡锡北污水处理厂运行评估及优化改造方案  

Operation Evaluation of Xibei Wastewater Treatment Plant in Wuxi and Its Optimization

作　　者：魏翔 李怀波 郑凯凯[2,3] 王燕 李激[2,4,5] WEI Xiang;LI Huai‑bo;ZHENG Kai‑kai;WANG Yan;LI Ji(Housing and Urban Rural Development Bureau of Wuxi Xishan District,Wuxi 214000,China;School of Environment and Civil Engineering,Jiangnan University,Wuxi 214122,China;Wuxi Puhui Environmental Protection Technology Co.Ltd.,Wuxi 214028,China;Jiangsu Key Laboratory of Anaerobic Biotechnology,Wuxi 214122,China;Jiangsu Collaborative Innovation Center of Water Treatment Technology and Materials,Suzhou 215009,China)

机构地区：[1]无锡市锡山区住房和城乡建设局,江苏无锡214000 [2]江南大学环境与土木工程学院,江苏无锡214122 [3]无锡普汇环保科技有限公司,江苏无锡214028 [4]江苏省厌氧生物技术重点实验室,江苏无锡214122 [5]江苏高校水处理技术与材料协同创新中心,江苏苏州215009

出　　处：《中国给水排水》2024年第3期95-100,共6页China Water & Wastewater

摘　　要：以无锡锡北污水处理厂为例,通过全流程测试和活性污泥特性研究,分析存在的问题,并提出改造方案。结果表明,该污水厂的硝化速率(以NH_(3)-N计)为1.2 mg(/gVSS·h),处于较低水平,且曝气生物滤池无实际硝化效果,导致冬季氨氮存在超标风险。此外,由于同步化学除磷的抑制作用,活性污泥的最大厌氧释磷速率(以PO_(4)^(3-)-P计)为0.66 mg(/gVSS·h),处于偏低水平,生物除磷效果较差。为了解决该污水厂存在的问题,同时遵循尽量依托已有构筑物、减少工程投资及运行费用的原则,通过在好氧池设计悬浮填料系统来弥补硝化速率低及水力停留时间较短的不足;将现有曝气生物滤池改造为反硝化滤池,强化系统脱氮效果;此外,新建高效沉淀池,消除同步化学除磷对生物除磷的不利影响。This paper analyzed the existing problems and proposed the improvement scheme of Xibei Wastewater Treatment Plant in Wuxi according to the whole process test and activated sludge characteristics.The nitrification rate(measured by NH_(3)-N)of the plant was at a low level of 1.2 mg/(gVSS∙h),and the existing biological aerated filter had no actual nitrification ability,resulting in the risk of exceeding the ammonia nitrogen limit specified in the discharge standard in winter.In addition,due to the inhibition of simultaneous chemical phosphorus removal,poor biological phosphorus removal performance was obtained,and the maximum specific anaerobic phosphorus release rate(measured by PO_(4)^(3-)-P)of activated sludge was at a low level of 0.66 mg/(gVSS∙h).The low nitrification rate and short hydraulic retention time were compensated by constructing suspension filler system in the aerobic tank,so as to solve the problems existing in the plant,follow the principle of relying on the existing structures as much as possible,and reduce the project investment and operating costs.The existing biological aerated filter was transformed into a denitrification filter to enhance the nitrogen removal performance of the system,and a new high‑efficiency sedimentation tank was built to eliminate the adverse effects of simultaneous chemical phosphorus removal on biological phosphorus removal.

关 键 词：提标改造 污水处理厂 全流程测试分析 活性污泥特性 

分 类 号：TU992[建筑科学—市政工程]