印染废水设计

第1页摘要废水处理厂设计规模5000m3/d，设计水质水量为：Q=5000m3/d，CODcr=700～1000mg/L，PH=10～11，SS=500～800㎎/l色度400～600倍。经处理后，应达到下列出水水质：COD≤100mg/L，色度≤40倍，SS≤50mg/L,达《山东省地方标准纺织印染工业水污染物排放标准》（DB37/533-2005）标准Ⅰ中B级标准。本工程方案设计依据有关环境保护在污水中的要求，采用水解酸化—SBR—混凝沉淀工艺处理纺织印染废水，在详细方案比较的基础上，选择了如下处理工艺流程：印染废水→格栅→调节池→水解酸化→SBR→池混凝沉淀池→出水↓污泥外运←污泥脱水←浓缩池经设计可知COD=90.3%,ηSS=94.4%,色度94.8%。经技术经济分析，此方案投资总额788万元，废水处理成本为1.5元/m3，有着良好的经济效益和社会效益。且节约用地、提高绿化、降低能耗的理念在设计中得到充分的实践，符合新时代环保的要求。关键词：纺织印染废水水解酸化SBR混凝第2页AbstractThedesigningscaleofwastewatertreatmentplantis5000m3/d,thedesigningqualityandquantityofwaterare:Q=5000m3/d，COD=700～1000mg/L,PH=10～11,SS=500～800㎎/l,Colordegree=400～600times.Afterdisposingofit,thequalityofwatershouldattainthefollowingstandards:COD≤100mg/L，SS≤50mg/L，Chroma≤40times，reachingtheBstandardof(DB37/533-2005）oflocalstandardsofShandongProvinceTextileindustrialwaterpollutantdischargestandards.Thedesignofthisprojectisinaccordancewithrequirementsoftheenvironmentalprotectioninthewastewater.Itusesthehydrolyticacidification-SBR-coagulation-sedimentationprocesstodealwiththewastewaterintextileprinting.Basedoncomparisonofthedetailedprogram,weselectthefollowingprocesses:PrintingandRegulatingHydrolyticSBRdyeingwastewater→Grids→pond→acidification→pond↓CarryDehydratePoolCoagulationoutSludge←Sludge←enrichment←sedimentationtanks→DrainageThroughdesigning,wecanknowthattheresultofCODis90.3.5%,ηSSis94.4%,colordegreeis94.8%.Aftertechnicalandeconomicanalyzing,theinvestmentamountofthisprojectis7.88millionYuan,andthecostofdisposalofwastewateris1.5Yuan/m3.Itnotonlygainsgoodeconomicandsocialbenefits,butalsofullyputstheideasofsavinglandeconomically,improvingvirescenceandreducingenergyconsumingintothepracticewhiledesigning,whichisinconformitywithneweraenvironmentalneeds.KEYWORDS:textileprintinganddyeingwastewaterhydrolyticacidificationSBRCoagulation第3页目录目录..............................................................................................................................3前言..............................................................................................................................6第一章绪论................................................................................................................71.1印染废水的产生及特点..................................................................................71.2印染废水的水质及水量分析..........................................................................71.2.1不同产品排放的废水水质.....................................................................71.2.2废水水量.................................................................................................81.3印染废水的危害..............................................................................................81.4设计任务...........................................................................................................91.4.1本毕业设计课题的目的和要求............................................................91.4.2本毕业设计课题的技术要求与数据.....................................................9第二章工艺流程确定..............................................................................................102.1印染废水概况................................................................................................102.2工艺流程比选、确定说明.............................................................................102.2.1方案设计原则.......................................................................................102.2.2印染废水处理工艺...............................................................................102.2.3印染废水处理工艺组合及比较...........................................................162.3工艺方案分析选择：.....................................................................................182.3.1水解酸化法...........................................................................................182.3.2SBR.......................................................................................................192.3.3混凝沉淀法...........................................................................................202.4达标分析.........................................................................................................21第三章构筑物设计计算..........................................................................................223.1格栅.................................................................................................................223.1.1设计概述..............................................................................................223.1.2设计参数..............................................................................................223.1.3设计计算..............................................................................................233.1.4格栅机的选型.......................................................................................243.2调节池............................................................................................................253.2.1调节池有效容积...................................................................................253.2.2调节池尺寸.........................................................................................