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当前位置: 首页 > 文章 > UBAF对二级生活污水中COD和NH4_~+-N的去除规律研究 东北农业大学学报 2009,40 (1) 41-45
Position: Home > Articles > Removal rules of COD and NH4_~+-N in secondary domestic sewage by UBAF Journal of Northeast Agricultural University 2009,40 (1) 41-45

UBAF对二级生活污水中COD和NH4_~+-N的去除规律研究

作  者：
闫立龙;张颖;任源;都昌杰
单  位：
哈尔滨工业大学市政环境工程学院;东北农业大学资源与环境学院
关键词：
曝气生物滤池;有机负荷;水力负荷
摘  要：
文章以升流式曝气生物滤池(Up-flow Biological Aerated Filter,UBAF)模拟处理二级生活污水为研究对象,研究了UBAF对COD和NH4+-N的去除规律,考察了有机负荷、水力负荷和载体高度对两者去除效果的影响。结果表明,经UBAF处理后的水质稳定,对COD、NH4+-N平均去除率分别为71.88%和75.28%;有机负荷和水力负荷对反应器污染物处理效果影响很大,试验得到的最佳有机负荷和水力负荷分别为4.67kg·m-·3d-1和7m·h-1;UBAF内存在不同菌群沿层变化的特点,在进水端80cm段以异养菌为主,而在出水端以硝化菌为主,随着有机负荷增加,菌群分层现象减弱。
译  名：
Removal rules of COD and NH4_~+-N in secondary domestic sewage by UBAF
作  者：
YAN Lilong1, ZHANG Ying1, REN Yuan2, DU Changjie1 (1. Resources and Environmental Sciences College, Northeast Agricultural University, Harbin 150030, China; 2. School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China)
关键词：
Biological Aeration Filtration(BAF); organic load; hydraulic load
摘  要：
Up-flow Biological Aeration Filtration(UBAF) was used to treat simulated secondary domestic sewage, removal rules of COD and NH4+-N by UBAF were studied, and the effect of organic load, hydraulic load and media height on removal efficiency of the two parameters was investigated. The results showed that a stable water quality of effluent was obtained, and average removal efficiencies of COD and NH4+-N were 71.88% and 75.28%, respectively. The treatment efficiency of pollutants was influenced evidently by organic load and hydraulic load, which obtained optimal values of 4.67 kg·m-3·d-1 and 7 m·h-1 respectively. There existed different kinds of bacteria which changed along the different layers of UBAF, with mainly heterotrophic bacteria in influent part and nitrifying bacteria in effluent part. Distribution of bacteria on different layers weakened with the increment of organic load.

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