印染废水毕业设计

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1、理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

2、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：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29理AbstractThedesigningscaleofwastewatertreatmentplantis3000m3/d,thedesigningqualityandquantityof

3、waterare: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）oflocalstandardsofShandongProvinceTextileindustrialwater

4、pollutantdischargestandards.Thedesignofthisprojectisinaccordancewithrequirementsoftheenvironmentalprotectioninthewastewater.Itusesthecoagulation-sedimentation-hydrolyticacidification–contactoxidationprocesstodealwiththewastewaterintextileprinting.Basedoncomparisonofthedetailedprogram,

5、weselectthefollowingprocesses:PrintinganddyeingwastewaterRegulatingpondGridsCoagulationsedimentationtanksHydrolyticacidificationContactoxidationpondSecondarysedimentationtankDrainagePoolenrichmentDehydrateSludgeCarryoutSludgeThroughdesigning,wecanknowthattheresultofCODis94%,ηSSis96.2%

6、,colordegreeis95%.29理Aftertechnicalandeconomicanalyzing,theinvestmentamountofthisprojectis8.69millionYuan,andthecostofdisposalofwastewateris2.8Yuan/t.Itnotonlygainsgoodeconomicandsocialbenefits,butalsofullyputstheideasofsavinglandeconomically,improvingvirescenceandreducingenergyconsum

7、ingintothepracticewhiledesigning,whichisinconformitywithneweraenvironmentalneeds.KEYWORDS:Textileprintinganddyeingwastewater;Coagulationsedimentation;Hydrolyticacidification;Contactoxidation29理目录目录4前言8第一章综述91.1印染废水的产生及特点91.2印染废水的处理111.2.1印染废水处理的通用方法111.2.2针织印染废水的产生与处理121.3设计依据和原则131.3

8、.1设计依