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河南城建学院本科毕业设计摘要I摘要本设计是制革废水的处理工艺设计，公司所在地在豫东南县级市项城，由于当地有莲花味精公司以及制革私营小企业，所以污染非常严重，当地对污染排放要求严格。制革废水具有高污染性，其特点是碱性大，色度高，耗氧量高，悬浮物多含。鞣制过程中产生的含铬废水需单独处理，经过沉淀压滤和酸化，回收利用，上清液进入综合废水除理。本设计采用卡鲁塞尔氧化沟生物处理工艺。此工艺发展成熟，处理效果好。BOD5与COD经前置厌氧处理80%后进入氧化沟，在经过卡鲁塞尔处理后，出水水质那拿到污水综合排放一级标准。初沉池用平流式沉淀池，二沉池有竖流沉淀池。整个工艺过后，COD去除率达到99%，BOD5去除率达到99.92%，SS去除率达到99.9%。关键词：制革废水；工艺设计；脱氮；BOD5；卡鲁塞尔氧化沟河南城建学院本科毕业设计ABSTRACTIIABSTRACTThisdesignprocessiswastewatertreatmentfortanning.ThecompanyinthesoutheastofHenanprovinceandthepollutionofthelocalenvironmentisserious.Thegovernmentisverystrictforthecompanyofenvironment.Tannerywastewaterhaveahighpolluting.whichischaracterizedbyalargealkalinityahighlychromaandabigOxygenconsumption,italsohavealargeSS.ThetannerywastewaterhaveHeavymetalionsCr..sowemustDealwithseparatelyfortheChromium-containingwastewaterThisdesignusedbyOxidationditchtodealwithtannerywastewater.Thisprocessismaturetreatmentisverygood.ManyTanneryfactoryusedthisprocesstodealwastewater.FirstthewastewaterdealwithbyAnaerobicpondandthenthewastewatergototheOxidationditch.ThiscanGuaranteethewaternoHazardousforpeopleandforourenvironment.ThisdesignhavemanyStructures,includeOxidationditch,UASB,Sedimentationtanks,andGrilleandsoso.gothoughtheCompleteprocessthewastewatercanremoval99%COD,BOD5andSS.thewastewatercanemissionintotheenvironment.Thedesignincludesthedesignschemeselectionofthebackground,basis,process,structuresizecalculation,equipmentselection,economicevaluationKeyWords:oxidationditch;treatmentprocess;leatherwastewatercontrol;designparameter河南城建学院本科毕业设计ABSTRACTIII目录摘要......................................................................................................................................................IABSTRACT.........................................................................................................................................II1项城国际制革厂废水处理工艺设计说明书....................................................................................11.1产业总述...............................................................................................................................11.1.1企业概况....................................................................................................................11.1.2皮革生产工艺流程为................................................................................................21.1.3制废水来源................................................................................................................21.1.4废水特点....................................................................................................................41.2设计要求...............................................................................................................................61.3处理工艺的比较与选择........................................................................................................71.3.1制革废水处理工艺概况............................................................................................71.3.2常用的生化处理........................................................................................................71.3.3工艺的选择................................................................................................................71.3.4工艺流程图的确定....................................................................................................81.3.5含铬废液的处理........................................................................................................81.4设计工艺所选的构筑物以及机械设备的参数...................................................................81.4.1细格栅........................................................................................................................81.4.2调节池........................................................................................................................91.4.3提升泵房设计............................................................................................................91.4.4初沉池......................................................................................................................101.4.5UASB设计................................................................................................................101.4.6氧化沟......................................................................................................................111.4.7二沉池......................................................................................................................121.4.8加氯消的确定..........................................................................................................131.4.9鼓风机房..................................................................................................................141.4.10污泥回流泵房........................................................................................................141.4.11剩余污泥泵房........................................................................................................141.4.12污泥浓缩池............................................................................................................151.5污水厂平面高程布置..............