多级曝气生物滤池处理城市污水的研究

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1、上海交通大学硕士学位论文多级曝气生物滤池处理城市污水的研究姓名：康盈申请学位级别：硕士专业：环境工程指导教师：蒯琳萍20060101上海交通大学申请硕士学位论文的各个单元格率池中有一定的规律性降解CODCr的区域主要分布在曝气生物滤池的下面三格单元滤池降解氨氮的区域主要分布在曝气生物滤池的上面三格单元滤池大部分悬浮物在底部三格单元滤池被去除通过在曝气生物滤池的出水口投加铁屑的办法对曝气生物滤池进行化学除磷取得了良好的效果使得总磷的出水浓度进一步下降到1mg/L以下通过对曝气生物滤池的产泥量进行分析得到曝气生物滤池具有产泥量低

2、的优点针对曝气生物滤池产生的污泥主要集中在下面三格单元滤池的特点对上面三格和下面三格单元滤池单独进行反冲洗节省能耗关键词曝气生物滤池城市污水容积负荷反冲洗II上海交通大学申请硕士学位论文ABSTRACTTheshortageofwaterresourcespresentsahugechallengetoourcountry’seconomicandsocialdevelopment.Themainreasoncausingthisphenomenonisthatmunicipalwastewaterusuallyunderg

3、oesnotenoughappropriatetreatmentoractuallynotreatment.Basedonthesituationrightnow,itisnecessarytodevelopanefficienttreatmenttechnologythatwillbeinaccordancewithourcountry’spresentsituation.Biologicalaeratedfilterfulfilledthatkindoftreatmenttechnology.Sixsmallindivi

4、dualfilterscomposedthebiologicalaeratedfilterwetestedinthestudy;twodifferentpackagingmaterialshavingdifferentdiameterswereappliedtothebiologicalaeratedfilter.theexperimentincluded:startupofBAF,testoftreatmentcapacity,pilotoptimizationoftheoperationalparametersandso

5、on.Theexperimentresultrevealedthatduringthewinterperiodwhenaveragetemperatureis8,ittookabout15daystofinishthestartingperiodforthebiologicalfilmfullymature.Thestartingtimewoulddecreasewhentemperatureincreases.Throughtheanalysisoftheaerationintensity,wediscoveredtha

6、ttheairandwaterratioof3:1isthemostappropriateratiowithaconsiderationoftreatmentresultandenergyconsumption.WheninfluentCODCrfluctuatedintherangeof182-379mg/L,III上海交通大学申请硕士学位论文airandwaterratiowas3:1,temperaturewas20,thevolumetricloadof4.63kgCODCr/d·mwasthehighestloa

7、dreachedwithaconsiderationoftreatmentresult,theeffluentwas70mg/LforCODCr,8mg/Lforammonianitrogen.Biologicalaeratedfilteralsohasastrongcapabilityofphosphorusremoval.TheT-Pconcentrationintheeffluentwasabout3.5mg/Lwhiletheremovalratewas50%.Theexperimentresultalsoshowe

8、dthatthealtitudeofthefilterhadsomeeffectontheremovalofpollutant.CODCrandSSremovalwasmainlycontributedbythebottomthreefilterswhiletheammonianitrog