滤层厚度对慢滤池深度处理污水的性能影响 Experimental study of the filter bed depth on performances

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滤层厚度对慢滤池深度处理污水的性能影响

Experimental study of the filter bed depth on performances of a slow sand filter used for wastewater advanced treatment

将慢滤池用于污水二级出水的深度处理,并利用小试装置研究了滤层厚度对慢滤池性能的影响.选取浊度、COD和色度三个指标,在滤层不同深度处多次取样,分析各指标沿滤层厚度的变化.结果表明,采用粒径为0.4~0.6 mm,滤层厚度为800 mm的石英砂做滤床时,慢滤池对二级出水具有较好的净化效果:当进水浊度、COD和色度分别为1.3~6.9 NTU、30.4~70.0 mg·L~(-1)和20.6°~57.6°时,平均去除率分别达到86.5%、45.0%和46.3%.从试验结果可以看出,慢滤池类似一个微缩的污水二级处理系统,滤层表面的粘性滤膜起到类似初沉池的作用,可以对各指标实现较好的去除,58.6%的浊度、52.7%的COD和45.7%的色度是在滤层上部去除的;慢滤池中部起到类似曝气池的作用,下部起到类似二沉池的作用,对水质指标也能实现一定的去除.水利论文P5`&my4@+kD)Da#oB

作 者: 曹相生 刘杰 孟雪征 曲庆国  
作者单位:曹相生,刘杰,孟雪征(北京工二业大学建工学院,北京,100124)水利论文.Mc-jH?&U'V,v
曲庆国(枣庄市市政工程管理处,山东,枣庄,277100) 
刊 名:生态环境学报  ISTIC PKU
英文刊名:ECOLOGY AND ENVIRONMENTAL SCIENCES 
年,卷(期):2010 19(3) 
分类号:X701.3 
关键词:过滤   污水深度处理   生物膜   滤层厚度   慢滤池   filter   advanced wastewater treatment   biofilm   filter bed depth   slow sand filter  
机标关键词:滤层厚度滤池深度处理污水性能影响advanced treatmentsand filterdepthbed慢滤池sedimentation tankCOD水质指标二级出水Aeration tank进水浊度色度平均去除率小试装置试验结果深度处理 
基金项目:国家自然科学基金项目,北京科技新星计划 
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