HRT和载体对一体化生物膜反应器脱氮除磷效果的影响  

Effects of HRT and media on nitrogen and phosphorus removal in an integrated biofilm reactor

作　　者：管运涛[1,2,3] 宁涛[2,3] 张丽丽[1] 

机构地区：[1]清华大学环境科学与工程系,北京100084 [2]清华-京大环境技术联合和教育中心,深圳518055 [3]清华大学深圳研究生院,深圳518055

出　　处：《清华大学学报（自然科学版）》2009年第3期359-363,共5页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目(50238020;50478011);中国韩国国际共同研究项目

摘　　要：根据生物脱氮除磷原理,设计了一体化生物膜反应器,用于生活污水的处理。在一体化生物膜反应器处理生活污水连续运行基础上研究水力停留时间(HRT)和载体对反应器脱氮除磷效果的影响,同时通过分析微生物群落变化对系统脱氮过程进行探讨。试验结果表明:载体特性对反应器脱氮除磷效果影响显著;HRT为9 h时,载体B 4反应器总氮去除率为68.9%;好氧区HRT是限制系统脱氮效果的主要因素。由于载体的作用反应器好氧区存在着好氧缺氧微环境的交替,从而实现了好氧区同步硝化反硝化的脱氮过程。An integrative biofilm reactor was designed to treat domestic wastewater for biological nitrogen and phosphorus removal. The effects of the hydraulic retention time （HRT） and the media on the nitrogen and phosphorus removal were studied for continual treatment of domestic wastewater continuously in an integrated biofilm reactor. The nitrogen removal is analyzed based on the variety of the microbe community. The results indicate that media characteristics significantly impact the nitrogen and phosphorus removal. For HRT = 9 h, the total nitrogen removal rate was 68.9% in the reactor using B4 media. The HRT in the aerobic zone is the primary parameter limiting the nitrogen removal. The media affects the A/O microenvironment, producing simultaneous nitrifying and denitrifying in the aerobic zone.

关 键 词：水力停留时间 载体 脱氮除磷 

分 类 号：X703[环境科学与工程—环境工程]