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北京理工大学珠海学院2007届本科生毕业设计I啤酒厂污水处理工艺流程设计摘要啤酒工业在我国迅猛发展的同时，排出了大量的啤酒污水，给环境造成了极大的威胁。啤酒污水处理厂的处理水量为5000dm/3,不考虑远期发展。原污水中各项指标为：BOD浓度为800mg/L,COD浓度为1400mg/L，SS浓度为350mg/L,Ph=6～10。因该污水BOD值较大,不经处理会对环境造成巨大污染，故要求处理后的排放水要严格达到国家二级排放标准,即：BOD≤20mg/L，COD≤100mg/L，SS≤70mg/L，Ph=6～9。本文分析了啤酒生产中污水产生的环节，污染物及主要污染来源，并从好氧、厌氧生物处理两方面来考虑了污水治理工艺，提出了UASB+CASS的组合工艺流程。可将污水COD由1400mg/L降至50～100mg/L，BOD从800mg/L降至20mg/L以下，SS由350mg/L降到70mg/L以下，出水符合标准。本设计工艺流程为：啤酒污水→格栅→污水提升泵房→水力筛→调节池→UASB反应器→CASS池→处理水该处理工艺具有结构紧凑简洁，运行控制灵活，抗冲击负荷，污泥量小等特点。为啤酒工业污水处理提供了一条可行途径。具有良好的经济效益、环境效益和社会效益。关键词：啤酒污水UASBCASS北京理工大学珠海学院2007届本科生毕业设计IISewageTreatmentProcessDesignofBeerFactoryAbstractWiththerapiddevelopmentofbreweryindustryinChina,morebrewerywastewaterisdischarged,whichendangersenviroment.Thewaterwhichneedstotreatmentinthebeerwastewatertreatmentplantis5000dm/3,regardlessofthespecifiedfuturedevelopment.Varioustargetintherawwastewateris:theconcentrationofBODis800mg/L,theconcentrationofCODis1400mg/L,theconcentrationofSSis350mg/L，andpHis6～10.Forthebeerwastewater'sBODishigh,itcouldpollutetheenvironmentifdrainedbeforetreatment,soitrequestthebeerwastewaterwhichdrainedmustbestrictlytreatedtothetwoeffluencestandardinthecountry,whichisasfollowing:BOD≤20mg/L,COD≤100mg/L,SS≤70mg/L,pH=6～9.Accordingtotheproductscaleofbeerbrewery,themainstandardofdrainingwater\naturalmaterials,andsoon,themainprocesstechnologyofthebeerwastewaterdisposalstationisdefinedasUASB+CASS.Practiceofprojectindicate,whenCODofwastewaterreducesfrom1400mg/lto50~100mg/l,BODreducesfrom800mg/lto20mg/l,SSreducesfrom350mg/lto70mg/l,sothatdrainsoutcanreachestheStandard.Thetechnologicalprocessofthisdesignis:Beerwastewater→Screens→Thesewageliftpumphouse→shuilishai→Regulatestank→ReactiontankofUASB→TankofCASS→TreatmentwaterThistechnologyofwastewatertreatmenthasmanytraits.Suchas,well-knitstructure,pithyquickcontrol,lastingattacked,lesssledgecapacity.Practiceindicatesthatthecomposedcrafthasreliablefunction,itsinvestmentislittle,anditsrunningandmanagementisuncomplicated.Keywords:beerwastewaterUASBCASS北京理工大学珠海学院2007届本科生毕业设计III目录摘要............................................................................ⅠABSTRACT.......................................................................Ⅱ1前言.......................................................................................................................................................11.1研究的意义及目的...................................................................................................................11.2研究目标和关键问题..............................................................................................................11.3研究现状和内容........................................................................................................................12工艺流程选择及说明...............................................................................................................22.1工程概况........................................................................................................................................22.1.1工厂概况...................................................................................................................................22.1.2设计依据..…………………………………...……………………………………..22.1.3设计范围...................................................................................................................22.1.4设计原则...................................................................................................................................22.2污水处理工艺流程...................................................................................................................22.2.1建设规模...................................................................................................................................22.2.2设计原水水质指标..............................................................................................................32.2.3设计出水水质指标..............................................................................................................32.2.4处理工艺流程的选择........................................................................................................32.2.5处理工艺路线的确定........................................................................................................32.3主要处理构筑物设计及选型..............................................................................................42.4污水处理站总体布置..............................................................................................................5北京理工大学珠海学院2007届本科生毕业设计IV2.4.1布置原则...................................................................................................................................52.4.2管线设计...................................................................................................................................52.4.3布置特点...................................................................................................................................62.4.4高程布置..............................................................................................................