BAF池反冲洗进气管回水分析及解决

BAF池反冲洗进气管回水分析及解决50ConstructionTechnologyofChinaOctober2010BAF池反冲洗进气管回水分析及解决任丽蓉，李扬(1．西安建筑科技大学陕西西安710054；2．银川污水处理有限公司宁夏银川750000)【摘要】本文对银川污水处理公司第三中水厂曝气生物滤池反冲洗时，反冲洗风机停止后发生的曝气风机回水现象进行阐述，对反冲洗步骤进行分析，找出问题的关键点：一、反冲洗进气管道的U形阻水弯高度与液面高差过小；二、反冲洗进气阀在反冲洗风机停止后不能迅速关闭以阻止水进入管道；三、由温差导致的冷凝水累积在管道内。针对此三点提出改进方案，即提高反冲洗进气管道u形阻水弯的高度；在反冲洗进气阀前加装止回阀；设计阻水弯为一端高一端低，最大限度阻止冷凝水进入阻水弯保护端。【关键词】曝气生物滤池；反冲洗步骤；压力；回水TheBAFpondiSanti—toflushtoreturntowateranalysisandsolveintothewindpipeRenLi—rong，Ling(1．Xi—anbuildingscienceandtechnologyuniversityXi—anShanxi710054；2．YingcuanwastewatertreatmentlimitedcompanyYingcuanNinxia750000)【Abstract】ThistexttothesilverChuanwastewatertreatmentcompanythreemediumwaterfactoryPuspiritthe1Mngcreaturefilterpondanti—flush，anti—flushbreezemachinestopempressoccu~enccofPuspiritthebreezemachinere-turntowaterphenomenontoCalTy．onelaborate，rightnessanti—flushasteptocarryO13analysis，seekwrongofkeypoint：A，anti—flushcuD／edintotheUformZuwaterofthewindpipewayheightandliquidnoodlesGaoChaGuo4besmall；Two．anti—flushi