20000m3每天旅游度假区污水处理厂毕业设计

本科毕业设计(论文)GRADUATIONDESIGN(THESIS)题目：20000m3/d旅游度假区污水处理厂设计学生姓名：指导教师：薛生国学院：冶金与环境学院专业班级：环境工程1101班本科生院制2015年6月20000m3/d旅游度假区污水处理厂设计I摘要本设计为污水流量为20000m3/d旅游度假区污水处理厂设计，其污水主要是生活污水，氮、磷含量较高，因此必须要进行脱氮除磷处理。由于此污水处理厂位于旅游度假区，为了避免排出的污水对周边环境造成破坏，所以其出水水质必须满足《污水综合排放标准》（GB8979-1996）一级水质标准。通过对氧化沟工艺、SBR法、A2/O法等多种工艺的优缺点分析，最终采用卡鲁塞尔氧化沟工艺作为本设计处理旅游度假区生活污水的工艺方案。其工艺流程为：生活污水流经粗细格栅和沉砂池，经过预处理，在流经氧化沟进行生化处理后，通过二沉池实现固液分离，上清液达标排放。剩余污泥经过浓缩池和脱水车间处理后外运填埋。关键词：旅游度假区生活污水氧化沟工艺20000m3/d旅游度假区污水处理厂设计IIAbstractThedesignforthesewageflowis20000m3/dinthetouristresortsewagetreatmentplantdesign,thesewageismainlydomesticsewage,highnitrogenandphosphorus,nitrogenandphosphorusremovalandthereforemustbetreated.Becausethissewagetreatmentplantlocatedinthetouristresortarea,inordertoavoidthedischargeofsewagedamagetothesurroundingenvironment,sothewaterqualitymustmeettheIntegratedWastewaterDischargeStandard(GB8979-1996)awaterqualitystandard.Byoxidationditch,SBRmethod,advantagesanddisadvantagesofA2/Omethodandotherprocessesofanalysis,theeventualadoptionofCarrouseloxidationditchtreatmentprocessasthedesignoftheprogramResortSewage.Theprocessisasfollows:sewageflowthroughthethicknessofthegridandgritchamber,afterpretreatment,theflowthroughbiochemicaloxidationditchtreatment,secondarysedimentationtankbysolid-liquidseparation,andthesupernatantdischarge.AftertheconcentratedpoolofsludgedewateringplantandprocessSinotranslandfill.Keywords：touristresortdomesticsewageoxidationditchprocess.20000m3/d旅游度假区污水处理厂设计III目录摘要.............................................................................................................................................IAbstract....................................................................................................................................II第一章文献综述....................................................................................................................11.1引言...........................................................................................................................11.2旅游度假区污水的主要来源、性质及分类...........................................................11.2.1主要来源........................................................................................................11.2.2性质................................................................................................................21.2.3分类................................................................................................................31.3旅游度假区污水的危害...........................................................................................41.4旅游度假区污水的处理...........................................................................................51.4.1氧化沟工艺....................................................................................................61.4.2SBR工艺........................................................................................................61.4.3A2/O工艺.......................................................................................................71.4.4曝气生物滤池工艺........................................................................................81.4.5生物接触氧化法工艺....................................................................................91.5小结.........................................................................................................................10第二章工艺比较与确定......................................................................................................122.1设计依据.................................................................................................................122.2工艺路线的选择原则.............................................................................................122.3工艺路线的选择依据.............................................................................................132.4工艺路线选择的基本步骤.....................................................................................132.5工艺比较.................................................................................................................142.5.1卡鲁塞尔氧化沟工艺..................................................................................142.5.2间歇式活性污泥法工艺..............................................................................152.5.3A2/O工艺....................................................................................................1620000m3/d旅游度假区污水处理厂设计IV2.5.4曝气生物滤池工艺......................................................................................162.5.5生物接触氧化法工艺..................................................................................172.5.6对比分析......................................................................................................182.7工艺确定.................................................................................................................19第三章设备选型及计算......................................................................................................213.1粗格栅.....................................................................................................................213.1.1设计参数..