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.
出处
《北京工业大学学报》
EI
CAS
CSCD
北大核心
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)
关键词
气浮
好气滤池
二级出水
深度处理
dissolved air flotation
aerobic filters
secondary effluent
advanced treatment
作者简介
朱兆亮（1975-），男，山东济南人，副教授．
