啤酒厂污水处理工艺流程设计

1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，啤酒污水也给环境造成了极大的威胁。啤酒生产工艺流程包括制麦和酿造两部分，二者均有冷却水产生，约占啤酒厂总排水量的65%，水质较好，可循环用于浸洗麦工序中。高污染负荷的污水主要来自制麦中的浸麦工序和酿造中的糖化、发酵、过滤、包装工序，其化学需氧量在500～40000mg/L之间，除了包装工序的污水连续排放以外，其它污水均以间歇方式排放。酒污水pH变化范围大，COD、BOD和悬浮物浓度高，可生化性好。啤酒污水pH变化较大，不利于生化系统的运行，甚至对生化系统具有破坏和毒害的作用，啤酒污水悬浮物浓度较高,给环境造成了极大的威胁,不考虑远期发展。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SBR工艺流程。可使污水经处理后应达到国家GB8978－1996中第二类污染物最高允许排放标准中的二级标准，具体指标为：COD≤150mg/lBOD5≤30mg/lSS≤150mg/lpH6–9本设计工艺流程为：原原原原原原原原原原原原原原原SBR原原原原原原原原原原原原原原原原原原30%原原关键词：啤酒污水SBR治理工艺2SewageTreatmentProcessDesignofBeerFactoryAbstractBeerindustryintherapiddevelopmentofourcountryatthesametime,beerwastewaterhasalsocausedagreatthreat.Theprocessofbeerproductionprocessincludestwopartsofmaltingandbrewing,allofthetwocoolingwater,accountingforabout65%oftotalamountofdrainageinbeerfactory,betterwaterquality,canbecircularlyusedforsoakingwheatprocess.Saccharification,fermentation,filtration,thepackagingprocessofhighpollutionloadofwastewatermainlycomesfromthepreparationofwheatinthesteepingprocessandbrewing,thechemicaloxygendemandbetween500~40000mg/L,inadditiontothepackagingprocessofcontinuoussewageemissions,wastewateremissionsinbatchmode.WineWastewaterpHrange,COD,BODandhighconcentrationofsuspendedsolids,betterbiodegradability.BeerwastewaterpHchangesinlarge,isnotconducivetobiochemicalsystemoperation,evenhasthedamageandharmtothebiochemicalsystem,beerwastewatersuspendedsolidsconcentration,causedagreatthreattotheenvironment,withoutconsideringthelong-termdevelopment.Thispaperanalysesthebeerwastewatergeneratedlinksofproduction,pollutantsandthemainpollutionsources,andfromtheaerobic,anaerobicbiologicaltreatmenttoconsidertwoaspectsofthesewagetreatmentprocess,theSBRprocess.ThetreatedwastewatershouldreachmaximumallowableemissionstandardinthetwolevelstandardofsecondpollutantsinnationalGB89781996,specificindicatorsfor:COD≤150mg/l,BOD5≤30mg/lSS≤150mg/lpH6–9Keywords:SBRtreatmentofbeerwastewater3目录摘要..............................................................................................................................................................1Abstract............................................................................................................................................................21前言.............................................................................................................................................................41.1研究的意义及目的....................................................................................................................41.2研究目标和关键问题................................................................................................................41.3研究现状和内容........................................................................................................................42工艺流程选择及说明.................................................................................................................................52.1工程概况....................................................................................................................................52.1.1工厂概况................................................................................................................................52.1.2设计依据................................................................................................................................52.1.3设计范围................................................................................................................................52.1.4设计原则................................................................................................................................52.2污水处理工艺流程....................................................................................................................62.2.1污水处理规模........................................................................................................................62.2.2污水水质................................................................................................................................62.2.3污水处理要求........................................................................................................................62.2.4处理工艺流程选择与确定....................................................................................................62.3主要处理构筑物设计及选型....................................................................................................83工艺流程计算................................................................................................................................................93.1啤酒污水处理构筑物设计与计算............................................................................................93.1.1格栅........................................................................................................................................93.1.2集水池..................................................................................................................................123.1.3泵房...............................................