卡鲁塞尔3000型氧化沟设计

兰州交通大学毕业设计（论文）I摘要本设计规划设计了江宁市城市污水处理厂，其处理对象为城市污水,其处理水量，近期为9万m3,远期为13.5万m3。其进水水质：COD为380mg/L，BOD为150mg/L，SS为140mg/L，NH4+-N为32mg/L，TN为40mg/L，TP为5mg/L，处理后的污水要求处理达到《城镇污水处理厂污染物排放标准》(GB18918-2002)的一级标准B标准。本设计采用活性污泥法对城市污水进行处理，设计中要求对城市污水进行脱氮除磷处理，通过对比分析，本设计选用卡鲁塞尔3000型氧化沟工艺。并在本设计中，要求氧化沟产生的剩余污泥稳定化，所以本设计中污泥处理不需要消化稳定，只需要对污泥进行减容处理。其污水处理工艺流程为：进水、细格栅、沉砂池、卡鲁塞尔3000氧化沟、终沉池、接触消毒池、出水。污泥处理工艺流程为：浓缩池、泥贮、脱水机房、污泥外运。本设计完成了污水处理厂的处理构筑物的设计计算，污水处理厂的的平面布置及高程计算，以及污处理水厂总平面布置图，高程布置图，主要构筑物详图。关键词：城市污水，污水处理，卡鲁塞尔3000型氧化沟，污泥处理兰州交通大学毕业设计（论文）IIAbstractThedesignofurbansewagetreatmentplantinJiangning.thetreatmentobjectisurbansewage,andtherecentamountofwateris90000m3andtheforwardamountofwateris135000m3.Thewaterqualityare:COD:380mg/L,BOD:150mg/L,SS:140mg/L,NH+4-N:32mg/L,TN:40mg/L,TP:5mg/L.thetreatedsewagemustachieveurbansewagetreatmentplantpollutantdischargestandard(GB18918-2002)ofagradeBstandard.Thisdesignadoptsactivatedsludgeprocessfortreatmentofurbansewage,andthedesignrequirementsaretoremovenitrogenandphosphorusofurbansewage.Throughcomparativeanalyses,thisdesignselectsthecarrousel3000typeoxidationditchprocess.Inthedesign,thesludgestabilizationisrequiredforoxidationditch,sothesludgeprocessinthisdesigndoesnotneedtoachievedigestingstabilization.soitonlyneedstobetreatedbysludge.Thewastewatertreatmentprocessare:water,finegrille,sinkingsandpool,Carrousel3000oxidationditch,finalsettlingtank,disinfectionpool,watercontact.Thesludgetreatmentprocessare:theconcentratedpool,mudstorage,dewateringroom,sludgesinotrans.Thisdesigncompletedthecalculationofthedesign,layoutandelevationcalculationofsewagetreatmentplant,andsewagedisposalplantgenerallayout,elevationlayout,layoutofmainconstructionmaterialondetailstructureofsewagetreatmentplant.Keyword:Citysewage,sewagetreatment,Carrousel3000oxidationditch,sludgetreatment兰州交通大学毕业设计（论文）III摘要....................................................................................................................................IAbstract.............................................................................................................................II第一章绪论.....................................................................................................................1第一节水污染的现状.............................................................................................1一、水体的污染以及水体污染的危害...........................................................1二、我国现阶段的废水情况...........................................................................2三、城市污水处理厂的必要性.......................................................................2第二节本设计的项目背景.....................................................................................2一、城市概况...................................................................................................2二、自然条件...................................................................................................2三、水处理厂概况...........................................................................................3第三节设计内容.....................................................................................................3一、处理工艺的比选和处理构筑物计算.......................................................3二、平面布置...................................................................................................3三、高程计算...................................................................................................4第二章污水处理厂工艺的确定...................................................................................6第一节可生化性分析.............................................................................................6一、污水生化处理分析...................................................................................6二、生物脱氮除磷可行性分析.......................................................................6第二节污水处理厂的处理流程.............................................................................7一、工艺比选...................................................................................................7二、优缺点比较...............................................................................................9三、工艺流程确定.........................................................................................11第三节处理构筑物选型.......................................................................................11一、格栅.........................................................................................................11二、沉砂池.....................................................................................................12三、终沉池.....................................................................................................12四、消毒设施.................................................................................................13五、浓缩池.....................................................................................................14第三章污水厂处理构筑物计算.............................................................................15兰州交通大学毕业设计（论文）IV第一节泵前粗格栅...............................................................................................15一、设计条件.................