气浮-好气滤池工艺深度处理污水厂二级出水  

Advanced Treatment of Secondary Effluent by Dissolved Air Flotation-Aerobic Filters Processes

作　　者：朱兆亮[1,2] 曹相生[1] 李冬[1] 孟雪征[1] 王俊安[1] 张杰[1] 

机构地区：[1]北京工业大学水质科学与水环境恢复工程北京市重点实验室,北京100124 [2]山东建筑大学市政与环境工程学院,济南250101

出　　处：《北京工业大学学报》2010年第4期523-527,共5页Journal of Beijing University of Technology

基　　金：北京市优秀人才培养资助项目(20071D0501500211);国家'八六三'计划资助项目(2003AA601010)

摘　　要：通过小试研究了气浮-好气滤池工艺提高二级出水水质的应用效果.结果表明,在高、中、低浓度进水水质条件下,气浮-好气滤池工艺具有良好的适应性,工艺对色度、COD、氨氮、总磷、浊度等指标的平均去除率分别是64.8%、47.0%、80%、83%、77.8%.中、低浓度进水水质条件下,出水水质达到城市污水排放一级A标准(GB/T18918—2002)和城市杂用水水质标准(GB/T18920—2002);同时UV254和细菌也得到很好的去除,平均去除率达到了45.7%和62.5%.另外试验结果显示,工艺流程前段气浮单元对有机物、浊度、总磷及UV254的去除起到关键作用,而后续的好气滤池单元主要降低了氨氮浓度,对浊度、有机物的去除起到把关作用.The grouping technology of dissolved air flotation and aerobic filters are optimal to wastewater advanced treatment.Tests of improving secondary effluent by dissolved air flotation-aerobic filter＇s process are studied.The results indicate that the flotation-aerobic filters process can adapt well to different influent concentration,including high,middle and low concentration.The average removal rates of colority,COD,ammonia nitrogen,total phosphor and turbidity by flotation-aerobic filter＇s processes are 64.8%,47.0%,80%,83%,and 77.8% respectively.The effluent reaches the Water Quality Standard for Urban miscellaneous Water Consumption（GB/T 18920—2002） and Urban Wastewater discharge standards（GB/T 18918—2002） when the influent is middle or low concentration.The UV254 and bacteria are removed well too,and the average removal rates are 45.7% and 62.5% respectively.In the end,the results show that the flotation process plays a key role in aspect of removing organics,turbidity,total phosphor and UV254,and the aerobic filters decrease the ammonia nitrogen concentration largely.On the basis of the flotation process,much turbidity and organics can be removed.

关 键 词：气浮 好气滤池 二级出水 深度处理 

分 类 号：X703.1[环境科学与工程—环境工程]