Cu2和Ni2对水解MBR工艺处理效能的影响特性黄丽坤

49220172JOUＲNALOFHAＲBININSTITUTEOFTECHNOLOGYVol.49No.2Feb．2017DOI10．11918/j．issn．0367-6234．2017．02．011Cu2+Ni2+－MBＲ12221121．1500762．150090－MBＲCu2+、Ni2+－MBＲDOMs．Cu2+、Ni2+5～20mg/L－MBＲCODNH4+－N75%45%．－MBＲCu2+、Ni2+20mg/LMBＲ10mg/L．HPIHPO－A．Cu2+、Ni2+MBＲSOUＲ－MBＲSOUＲMBＲ5%．－MBＲEPSMBＲ．X522A0367－6234201702－0062－08InfluencecharacteristicsofCu2+andNi2+onthetreatmentefficiencyofhydrolysis-MBＲprocessHUANGLikun12WANGGuangzhi2LIWei2QUFanqi1WANGJingyuan1ZHAOQingliang21．SchoolofFoodEngineeringHarbinUniversityofCommerceHarbin150076China2．SchoolofMunicipalandEnvironmentalEngineeringHarbinInstituteofTechnologyHarbin150090ChinaAbstractInordertoreducetheimpactofheavymetalsonthebiologicaltreatmentsystemofelectroplatingwastewateralab-scaleprocesscombinedwithhydrolysisreactorandmembranebioreactorMBＲwasusedtotreatelectroplatingwastewater．TakingCu2+andNi2+asresearchobjectstheeffectsofdifferentmetalconcentrationsontheelectroplatingwastewatertreatmentwerestudiedandthechangesofDOMsandmicrobialactivityinwaterwereanalysedsimultaneously．TheexperimentalresultsshowedthattheremovalefficienciesofCODandNH4+－Nwereabove75%and45%respectivelywhentheconcentrationofNi2+andCu2+was5－20mg/L．Nitrificationbacteria’sabilitytoresistheavymetalimpactwasweak．ThetoleranceconcentrationofNi2+inhydrolysisreactorcombinedwithMBＲwas20mg/Landonly10mg/LinMBＲ．ThehydrolysisreactorcouldconvertmostofHPIintoHPO－Awhichcouldimprovethebiodegradabilityofrefractoryorganiccompoundsandthecontentofaromaticcompoundswasobviouslydecreased．WiththeincreaseofNi2+andCu2+theSOUＲvalueofactivatedsludgeinMBＲreactorwasgraduallydecreasedbuttheinhibitionrateofSOUＲinhydrolysisreactorcombinedwithMBＲwas5%lowerthanthatinMBＲ．Duetothehydrolysisthetoxicityofheavymetalsdecreased．InhydrolysisreactorcombinedwithMBＲtheactivityofmicroorganismwashigherandthecontentofEPSandtheeffluentconcentrationweresignificantlylowerthanthoseinMBＲ．Theformationofcolloiddissolvedorganicmatterandsludgecakelayercouldbereducedeffectivelywhichretardedtherateofmembranefouling．KeywordselectroplatingwastewaterhydrolysisacidificationMBＲheavymetal2016－02－162013ZX07201－007－0032012M5109651980—1962—[e-mail]、Ni、Cr、ZnCd、、1．、、2－6COD、7－9．．10COD75．08%．11A/O1∶3COD、NH4+－N83%98%．《》GB21900—2008COD、NH4+－N、TN12．membranebioreactorMBＲ、、、13－15．MBＲ．MBＲMBＲ16－18Cu2+Ni2+－MBＲdissolvedorganicmatterDOMs．11．11．Cu2+Ni2+、．、、2．5、1、3．5mg/L3Cu2+、Ni2+5、1020mg/L．1Tab．1WaterqualitycharacteristicsCOD/mg·L－1NH4+－N/mg·L－1TP/mg·L－1pH/℃250～44030～403．5～6．06．4～7．610～181．2－MBＲMBＲ1HMBＲ．MBＲ20L11．8L．D=150mm670mm11．8LMBＲL×B×H=400mm×200mm×250mm20L．MBＲhydraulicretentiontimeHＲT59h．、．MBＲ、．PVDF0．2μm0．2m2．transmembranepressuredifferenceTMP0．2MPa．MBＲ4L．MBＲ14mL/min．150%．MBＲMBＲ．HMBＲ．6d．2dCOD85%．!#!!$%&’()!*!!#$!%&$#!’()*$&!+,-./01$$!23456$’!789:;$%!5=?$(!@,A$)!@,&$!*!45&$!!!/BC()*1－MBＲFig．1Schematicdiagramofthelab-scalehydrolysisacidification-MBＲreactor1．3MBＲA/O．COD10dCOD80%．8000mg/LMBＲ4500mg/L．1．4COD、NH4+－N·36·2Cu2+Ni2+－MBＲMLSSMLVSSDOMs19DOMstransphilicneutralTPI－N、hydrophobicacidHPO－A、hydrophobicneutralHPO－N、hydrophilicfractionHPItransphilicacidTPI－A5TOC－VCPNUV254254nm20T6－21Lowry22specificoxygenconsumptionrateSOUＲ23Oxi－3205SET1TWTscanningelectronmicroscopeSEM28Quanta200FEI．2．、、Cu2+Ni2+－MBＲ．2．1CODNH4+－NCu2+Ni2+HMBＲMBＲCOD、NH4+－N2、3．2COD260～426mg/L3COD301．0、323．0、313．0mg/L．MBＲCOD37．7、65．5、97．2mg/LCOD87．7%、79．2%、68．9%HMBＲCOD31．2、35．6、73．3mg/LCOD89．6%、88．4%、76．3%．Cu2+、Ni2+5mg/LCOD．Cu2+、Ni2+10mg/LMBＲCODHMBＲCOD．Cu2+、Ni2+20mg/LMBＲCODCOD．HMBＲCOD75%MBＲCOD70%．!#$%&’’(!$&)*+,-./012’3!#,4’&%$#!5(6’’’’&’%’$’#’!’5’($%&’,7()*+,-*+,-!#89:89:!#2HMBＲMBＲCODFig．2CODremovalefficiencyofHMBＲandMBＲprocessesindifferentstages!#$%&!#’(!&)%*$+#,!!!!&!)!%!*!$!+!#$%&’’-*%)&!!()*+’(./012!+,-345./01./01!#345!#3HMBＲMBＲNH4+－NFig．3NH4+－NremovalefficiencyofHMBＲandMBＲprocessesindifferentstages3NH4+－N29．6～42mg/L3NH4+－N35．7、35．936．5mg/L．MBＲNH4+－N15．9、19．623．3mg/LNH4+－N55．3%、46．2%35．8%HMBＲNH4+－N6．7、9．611．5mg/LNH4+－N58．1%、52．4%52．3%．NH4+－N．Cu2+、Ni2+10mg/LHMBＲNH4+－N50%MBＲ40%．Cu2+、Ni2+20mg/L20mg/LMBＲNH4+－N20%HMBＲ45%．HMBＲNH4+－N．2．2DOMs、·46·49、．DOMs、24－25．4HMBＲMBＲDOMs．!#!$#!##%#&##$##’()*+,*+(-./+,-.*+(-0/+,-0/(1234567-!8!#$)9:3;8%&’()1$=*0$=+,-.#4527/?#&#@##A#$#!##/(1234567-!8’()*+,*+(-./+,-.*+(-0/+,-0#$)9:*)9:3B8%&0()1$=*0$=+,-.$#4527/4HMBＲMBＲDOMsFig．4DOMsintheeffluentofHMBＲandMBＲprocesses4aMBＲTOC27．9%82．3%COD．TOCHPI29．0%、HPO－A28．1%HPO－N31．2%88．1%．Cu2+、Ni2+0mg/LHPIHPO－AHPO－N50．6%．HPO－Aη=57．7%HPO－Nη=68．5%HPO－AHPO－N．MBＲHPI84．6%．Cu2+、Ni2+20mg/LDOMSHPO－A42．1%HPI32%3．HPIHPO－A．MBＲHPI、HPO－ATPI－AHPO－NTPI－NHPO－NTPI－N．HMBＲDOCMBＲCODMBＲHPI33．4%HMBＲHPO－AHPO－N32．4%．HMBＲ．MBＲ．、、HMBＲ．5HMBＲMBＲUV254．!##$#%#&#’#()*+,-+,)./0,-./+,).10,-.1234!#$%56’7&18’7’()*#9:;+2=4!,$%56’7&18’7’()*’#9:;+-../0.*?./0.*?+*?!##$#%#&#’#()*+,-+,)./0,-./+,).10,-.1@A’B&;C9.!@A’B&;C9.!5HMBＲMBＲUV254Fig．5UV254intheeffluentofHMBＲandMBＲprocesses5aUV254HPO－N53．4%HPO－N．36．1%UV254MBＲUV2546．6%MBＲHMBＲUV254．HPIUV25424．5%HPO－N93．61%．5bCu2+、Ni2+0mg/L．MBＲTPI－A、HPO－NTPI－NUV254HPITPI－A．MBＲTPI－ATPI－A．5bMBＲ·56·2Cu2+Ni2+－MBＲHMBＲ2HMBＲ．2．3SOUＲ26－27SOUＲ．6SOUＲ．!!#$%$!&#’()!#’()