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1、1摘要针对印染废水的水质特点，本文采用水解酸化与接触氧化相结合的生化工艺对废水进行处理。水解酸化和好氧接触设计停留时间均为10h，运行结果表明，水解酸化单元可有效提高废水的可生化性，废水经水解酸化后B／C值可从0．2～0．3提高至0．4左右，有效保证了好氧接触处理效果。根据环保监测结果，COD一般在80mg／L，BOD，在10mg／L以下，COD去除率80％以上，BOD，去除率90％以上。废水处理厂设计规模3500m3/d，其现今的设计水质水量为Q=3500m3/dCOD=2370mg/LBOD5=720mg/LP
2、H=12.40SS=574㎎/L色度512倍。经处理后，应达到下列出水水质：COD≤100mg/L，BOD≤25mg/L，色度≤40倍，pH在6～9，SS≤70mg/L,达污水排放一级标准。经设计可知COD=88.5%,ηBOD=96%,ηSS=98.6%,色度89.5%。经技术经济分析，此方案投资总额430万元，废水处理成本为0.97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,生物接触氧化ABSTRACT
3、Aimingatthecharacteristicsofprintinganddyeingwastewater,abiochemicaltechnologicalprocessofhydrolyticacidificationintegratingcontactoxidationwasappliedtotreatmentoftheprintinganddyeingwastewater;theHRTforthebothwere10hrespectively.Theoperatingresultsshowedthehy
4、drolyticacidificationsectioncouldimprovethebiochemicaldegradabilityeffectively;afterhydrolyticacidification,thewastewater＇sB/Cvaluecouldrisetoabout0.4from0.2-0.3,effectivelyensuringthetreatingeffectofaerobiccontact.Accordingtothemonitoringresultsbythedepartmen
5、tofenvironmentalprotection,CODandBOD5werebelow80mg/Land10mg/Lrespectively;CODandBOD5removalrateswereover80%andover90%respectively.Theliquidwasteprocessingfactorydesignsscale3500m3/d,itsrawwaterfluidmatteraccordingtosquareandpresentproductionscaleinfactoryandde
6、velopmentrequest,afterwithfactorysquare,nativeenvironmentalprotectionsectionconsultationcertainfollowingdesignfluidmatteramountofwater:Q=3500m3/dCOD=2370mg/LBOD5=720mg/LPH=12.40SS=574㎎/lColordegree512times.Afterhandles,shouldattainthefollowingawaterfluidmatter
7、:COD≤100mg/L，BOD≤25mg/L，Ph=6～9，SS≤70mg/L，Colordegree≤40times，reachingthedirtywaterexhaustsaclassstandard.ThroughdesignthenCOD=88.5%,ηBOD=96%,ηSS=98.6%,colorisa89.5%.Wasanalyzedbytechniqueeconomy,thisprojectinvestmenttotalamount4，300,000yuan,liquidwasteprocessi
8、ngcostis0.97yuan/m3,havegotthegoodandeconomicperformancewithsocialperformance.Andtheeconomyusesagroundof,increasethegreenturn,loweringcanconsumeofprincipleisindesignfulfillmentgett
