毕业设计.docx

理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=~,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=%,ηSS=%,色度95%。理2经技术经济分析,此方案投资总额869万元,。关键词:纺织印染废水混凝水解酸化接触氧化AbstractThedesigningscaleofwastewatertreatmentplantis3000m3/d,thedesigningqualityandquantityofwaterare:Q=3000m3/d,COD=700~1000mg/L,PH=~10,SS=500~800㎎/l,Colordegree=400~,thequalityofwatershouldattainthefollowingstandards:COD≤60mg/L,SS≤30mg/L,Chroma≤30times,reachingtheBstandardof(DB37/533-2005)-sedimentation-hydrolyticacidification–,weselectthefollowingprocesses:理3PrintinganddyeingwastewaterRegulatingpondGridsCoagulationsedimentationtanksHydrolyticacidificationContactoxidationpondSecondarysedimentationtankDrainagePoolenrichmentDehydrateSludgeCarryoutSludgeThroughdesigning,wecanknowthattheresultof?CODis94%,%,colordegreeis95%.Aftertechnicalandeconomicanalyzing,,,butalsofullyputstheideasofsavinglandeconomically,improvingvirescenceandreducingenergyconsumingintothepracticewhiledesigning,:Textileprintinganddyeingwastewater;Coagulationsedimentation;Hydrolyticacidification;Contactoxidation理4理5目录目录..........................................................................................................4前言.....................