毕业设计说明书污水厂CASS工艺VIP免费

南通某经济开发区污水处理厂设计摘要：本设计主要是南通市某经济开发区污水处理厂的设计，该污水厂位于经济开发区，根据对原水水质的分析，以及参考大量的污水处理资料，综合考虑技术、经济等因素，最终采用现行的SBR变形形式CASS工艺。CASS是周期循环活性污泥法的简称，又称为循环活性污泥工艺，是在SBR的基础上发展起来的，即在SBR池内进水端增加了一个生物选择器，实现了连续进水(沉淀期、排水期仍连续进水)，间歇排水。该污水厂设计的流程为进水→粗格栅→提升泵房→细格栅→平流沉砂池→CASS池→普快滤池→消毒池→出水。污泥的处理流程为CASS→污泥提升泵房→储泥池→浓缩池。该厂出水达到设计要求。关键词：污水处理厂；CASS；污泥处理FactorydesignofanEconomicDevelopmentZoneWastewaterTreatmentinNantongAbstract:ThisdesignisthedesignofwastewatertreatmentplantofaeconomicdevelopmentzoneofNantongCity,thesewagetreatmentplantislocatedintheeconomicdevelopmentzone,basedontheanalysisoftherawwaterquality,sewageandreferencedataprocessinglarge,comprehensiveconsiderationoftechnical,economicandotherfactors,thecurrentSBRdeformationformofCASSprocess.CASSisacyclicactivatedsludgemethodabbreviation,alsoknownascyclicactivatedsludgetechnology,isintheSBRdevelopedonthebasisofSBR,namelyinthepoolwaterinletendaddsabiologicalselector,realizescontinuouswater(precipitation,drainageperiodisstillcontinuous,intermittentdrainage.).Thedesignofwastewatertreatmentplantprocesswater,coarsegrid,pumpingstation,finegrid,advectionsedimentationtank,CASStank→Pukuaifilter,disinfectionpool,water.TreatmentprocessofsludgeisCASS,sludgepumpingstation,sludgestoragetank,concentratedpool.Theeffluentcanmeetthedesignrequirements.Keywords:Sewagetreatmentplant;CASS;sludgedisposal目录摘要.................................................................................................................................................................IAbstract.........................................................................................................................................................II1绪论..............................................................................................................................................................11．1课题研究意义................................................................................................................................12污水厂概况..................................................................................................................................................12.1地理位置及气候...............................................................................................................................12.2设计规模及进出水水质...................................................................................................................22.3处理程度的计算...............................................................................................................................23城市污水处理设计......................................................................................................................................23.1污水处理工艺流程选择...................................................................................................................23.2工艺比较...........................................................................................................................................33.2.1氧化沟方案..........................................