5000t印染废水处理工艺设计

本科毕业设计（论文）5000m3/d印染废水处理工艺设计学院环境科学与工程学院专业环境工程年级班别200x级（x）班学号3xxx00xxxx学生姓名xxx指导教师xxx20xx年x月I设计总说明印染废水在我国工业废水总量占有很大比例，而且具有碱性强，色度高，有机浓度高，生物降解性差等特点，如不治理，必然会对受纳水体造成严重污染，破坏水体生态系统。实践证明，对于印染废水，物化生化法是一种有效的处理工艺，但常规处理方法的效率较低，必须对其进行强化。本设计要求处理水量为5000m3/d的印染废水。通过对印染废水排放状况进行研究，根据印染废水的特点及在废水处理中取得的成功经验，选择了工艺成熟、稳定、节能、占地少、效率高的水解酸化—接触氧化法，使出水水质达到广东省印染废水污染物排放标准的要求。关键词：印染废水水解酸化接触氧化混凝沉淀IIDesignilluminateDyeingandfinishingwastewaterisanimportantpartofindustrywastewaterinourcountry,whichischaracterizedbyhighlevelofalkali,color,organicsandpoorbiodegradability.Itwillmakeseverepollutiontowatersystemanddeterioratetheaquaticecosystemifdischargedintowaterbodywithouttreatment.Ithasbeenprovedthatthephysicochemicaltreatmentisoneofthefeasiblemethodsintreatingdyeingandfinishingwastewater,butthetreatmentefficiencyofconventionalprocessesarenotveryhighandshouldbeenhanced.Thisdesigntreatedthedyeingandfinishingwastewatermeasured5000m3/d.Withthestudyofdyeingandfinishingwastewaterprocesses，especiallythesuccessfulexperienceofdyeingandfinishingwastewatertreatment,weselectthehydrolyticacidificationandbiologicalcontactoxidationprocessestotreatthedyeingandfinishingwastewater.Thiswayisproventoberipe,stead,effectiveandcompact.Asaresult,thedischargedwatercanmeettheemissionlimitsofdyeingandfinishingwastewater.Keywords：dyeingandfinishingwastewaterhydrolyticacidificationcontactoxidationcoagulationsedimentIII目录1绪论.......................................................................................................................11.1印染生产概况........................................................................................................11.2印染生产中化学品的使用....................................................................................11.2.1染料..........................................................................................................11.2.2助剂..........................................................................................................21.3印染废水来源、水质、水量................................................................................21.3.1来源..........................................................................................................21.3.2水质及水量..............................................................................................21.4印染废水排放的现状与特点................................................................................21.4.1印染废水的现状......................................................................................21.4.2印染废水的特点......................................................................................31.5印染废水有害成分的分析....................................................................................41.6印染废水处理面临的问题....................................................................................51.6.1排放标准的日益严格..............................................................................51.6.2印染废水处理难度增加..........................................................................52印染废水处理技术及发展...................................................................................62.1物理法处理印染废水的技术................................................................................62.1.1吸附法......................................................................................................62.1.2絮凝法......................................................................................................82.1.3膜分离法..................................................................................................92.1.4离子交换法............................................................................................102.2化学法处理印染废水的技术..............................................................................102.2.1化学氧化法............................................................................................102.2.2电化学法................................................................................................112.2.3光化学法................................................................................................122.3生物法处理印染废水的技术..............................................................................122.3.1好氧法....................................................................................................12IV2.3.2厌氧法....................................................................................................132.3.3联合处理技术........................................................................................133印染废水处理工艺方案及流程.........................................................................143.1本设计所选工艺..................................................................................................143.2流程简介..............................................................................................................153.2.1印染废水处理系统工艺流程框图........................................................153.2.2工艺流程说明........................................................................................154主要构筑物的设计计算[19].................................................................................174.1格栅的计算........