悬浮填料床的启动与挂膜机理研究  

Investigation on Start-up and Biofilm Formation Mechanisms of Suspended Carrier Bed Process

作　　者：黄天寅[1] 夏四清[2] 钱永[1] 黄勇[1] 

机构地区：[1]苏州科技学院环境科学与工程系,江苏苏州215011 [2]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《中国给水排水》2010年第17期23-26,30,共5页China Water & Wastewater

基　　金：建设部研究开发项目(2008-K6-4)

摘　　要：采用悬浮填料床进一步处理化学生物絮凝工艺的出水,研究了其启动特性及挂膜机理。结果表明,装置运行10 d以后,对NH3-N的去除率>80%,出水NH3-N<5.0 mg/L,达到了《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级A标准,此时悬浮填料床的硝化性能保持稳定,可认为启动过程已完成。生物膜生长在悬浮填料的球体翼板上,这有利于生物膜的附着和老化脱落。电镜观察和PCR-DGGE的检测结果则表明,悬浮填料表面上生长的微生物种类较为丰富,且整个微生物系统保持相对稳定,有利于系统硝化性能的稳定发挥。Suspended carrier bed process was applied to treat the effluent from the chemical and biological flocculation process, and the biological start-up characteristics and the mechanisms of biofilm formation were investigated. The results show that after 10 d operation, the removal rate of NH3 - N is higher than 80% , and the effluent NH3 - N concentration is lower than 5.0 rag/L, which meets the first level A criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant （GB 18918 -2002）. The bed finishes its biological start-up with the stable nitrification efficiency. The biofilm grows on the carrier wing plates, which is helpful for its attachment and detachment due to aging. By electron microscopic observations and PCR-DGGE, it is found that the biofilm formed on the surface of the carriers is plenty of microbial species, and the whole microbial system remains in a stable state, which is useful for the stable nitrification efficiency.

关 键 词：悬浮填料床 启动 挂膜 化学生物絮凝 

分 类 号：X703[环境科学与工程—环境工程]