印染废水毕业设计

印染废水处理课程设计说明书1摘要本印染废水处理厂设计规模3000m3/d，设计水质水量为：Q=3000m3/d，CODcr=700～1000mg/L，PH=7.5~10.0，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,要求处理后水质达到《山东省地方标准纺织染整工业水污染物排放标准》(DB37/533－2005)标准Ⅲ中B级标准：COD≤60mg/l，SS≤30mg/l，色度≤30倍。印染废水的特征可概括为：有机物浓度高、成分复杂、可生化性较差、色度深、碱性大、PH高、水质变化大。本工程方案设计依据有关环境保护在污水中的要求，采用混凝沉淀—水解酸化—接触氧化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：经设计可知COD=94.0%,ηSS=96.2%,色度95%。经技术经济分析，此方案投资总额869万元，废水处理成本为2.8元/m3。关键词：纺织印染废水混凝水解酸化接触氧化废水调节池格栅混凝沉淀池水解酸化池接触氧化池二沉池出水浓缩池脱水间污泥外运印染废水处理课程设计说明书2AbstractThedesigningscaleofwastewatertreatmentplantis3000m3/d,thedesigningqualityandquantityofwaterare:Q=3000m3/d，COD=700～1000mg/L,PH=7.5～10,SS=500～800㎎/l,Colordegree=400～600times.Afterdisposingofit,thequalityofwatershouldattainthefollowingstandards:COD≤60mg/L，SS≤30mg/L，Chroma≤30times，reachingtheBstandardof(DB37/533-2005）oflocalstandardsofShandongProvinceTextileindustrialwaterpollutantdischargestandards.Thedesignofthisprojectisinaccordancewithrequirementsoftheenvironmentalprotectioninthewastewater.Itusesthecoagulation-sedimentation-hydrolyticacidification–contactoxidationprocesstodealwiththewastewaterintextileprinting.Basedoncomparisonofthedetailedprogram,weselectthefollowingprocesses:Throughdesigning,wecanknowthattheresultofCODis94%,ηSSis96.2%,colordegreeis95%.PrintinganddyeingwastewaterRegulatingpondGridsCoagulationsedimentationtanksHydrolyticacidificationContactoxidationpondSecondarysedimentationtankDrainagePoolenrichmentDehydrateSludgeCarryoutSludge印染废水处理课程设计说明书3Aftertechnicalandeconomicanalyzing,theinvestmentamountofthisprojectis8.69millionYuan,andthecostofdisposalofwastewateris2.8Yuan/t.Itnotonlygainsgoodeconomicandsocialbenefits,butalsofullyputstheideasofsavinglandeconomically,improvingvirescenceandreducingenergyconsumingintothepracticewhiledesigning,whichisinconformitywithneweraenvironmentalneeds.KEYWORDS:Textileprintinganddyeingwastewater;Coagulationsedimentation;Hydrolyticacidification;Contactoxidation印染废水处理课程设计说明书4目录目录....................................................4前言.....................................................7第一章综述..............................................81.1印染废水的产生及特点...................................81.2印染废水的处理........................................101.2.1印染废水处理的通用方法.......................101.2.2针织印染废水的产生与处理.....................111.3设计依据和原则........................................121.3.1设计依据.....................................121.3.2设计原则.....................................13第二章工艺流程的选择...................................132.1悬浮物的去除..........................................132.2碱度的去除...........................................132.3有机物的去除..........................................132.3.1生化处理方法的选择.............................132.3.2物化方法的选择................................142．4色度的去除...........................................152.5工艺流程的确定........................................152.6达标分析.............................................16第三章各处理单元的计算和设计...........................173.1格栅的设计计算........................................173.1.1格栅的作用...................................173.1.2格栅的分类...................................173.1.3格栅的设计参数...............................173.1.4格栅的计算...................................173.2调节池的设计计算......................................20印染废水处理课程设计说明书53.2.1调节池的作用.................................203.2.2调节池的计算.................................203.3混凝沉淀池的设计计算..................................223.3.1混凝的作用...................................223.3.2混凝的原理...................................223.3.3混凝剂的选择.................................223.3.4脱色剂的选择.................................223.3.5助凝剂的选择.................................233.3.6投药池的容积计算.............................233.3.7混合池的设计计算.............................243.3.8处理后的水质.................................253.3.9一级沉淀池的设计计算.........................263.4曝气系统的设计计算....................................303.4.1对曝气系统的要求.............................303.4.2曝气类型.....................................303.4.3鼓风曝气系统.................................313.5水解酸化池的设计计算..................................333.5.1水解酸化池的作用.............................333.5.2水解酸化池的计算.............................333.6接触氧化池的设计计算..................................363.6.1接触氧化池的大体构造.........................363.6.2生物接触氧化法的特点.........................363.6.3接触氧化池的设计计算.........................373.7二级沉淀池的设计计算..................................393.8污泥浓缩池的设计计算..................................413.8.1浓缩目的.....................................413.8.2常用的污泥浓缩方法...........................413.8.3重力浓缩池的计算.............................433.8.4浓缩池的日常管理.............................45印染废水处理课程设计说明书63.8.5异常现象分析与对策...........................453.9脱水系统的设计计算....................................463.9.1脱水目的.....................................463.9.2常用机械.....................................463.9.3本设计采用板框压滤机.........................473.10污泥的焚烧处理.......................................47第四章平面布置和高程布置设计............................484.1平面布置..............................................484.1.1平面布置原则..................