印制电路板行业废水高效低耗型脱氮技术分析

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1、-------哈尔滨工业大学工学硕士学位论文Comparedwithnitrificationsludge,thedenitrificationsludgehasmoretoxicitytolerance.Thecombinedprocessofcomplex-breakingpretreatment+anoxicactivatedsludge(AAS)+biologicalaeratedfilter(BAF)wasinvestigatedforthetreatmentefficiencyofnitrogenwastewaterthroughcontinuousdynamicexperim

2、ent.Theresultsshowedthattheindicatorscanreachnationalemissionrequirementsand effluentswaterqualityatstableoperationconditionswerethatNH4+-Nconcentrationof0.8mg/L,TNconcentrationof8.4mg/L,CODconcentrationof63.9mg/L,attheinflowwaterqualityconditionswithNH4+-Nconcentrationof23.0mg/L,TNconcentrationof

3、36.7mg/L,CODconcentrationof330.8mg/L,HRTof2hindenitrificationandnitrificationsection,nitrificationliquidrefluxratioof200%andcarbondosageof120mg/L(Methanol,usingCODCrcalculated).Comparedwiththeexistingprocess,reactiontimeandtreatmentcostoftheprocesscanbeeffectivelyreduced.ThetotalHRTfelldownto590mi

4、nfrom770minwithadecreaseof23%;thedosingcostreducedfrom4.4yuan/tonto1.8yuan/tonwithadecreaseof59%;theamountsofsludgeproductionreducedfrom1195mg/Lto760mg/Lwithadecreaseof36%.Keywords:printedcircuitboard(PCB),nitrogenremoval,highefficiencyandlowcost,complex-breaking-III------------哈尔滨工业大学工学硕士学位论文目录摘要

5、................................................................................................................IABSTRACT.......................................................................................................II第1章绪论...................................................................

6、................................11.1分析背景..................................................................................................11.1.1印制电路板废水的来源与分类.........................................................11.1.2印制电路板综合废水的特性与危害..................................................31.1.3印制电路板行业

7、废水排放标准.........................................................31.2国内外分析现状......................................................................................41.2.1国内外印制线路板行业废水脱氮分析现状............................