磁场对短程硝化工艺运行效果的影响周晓玮

35320173EnvironmentalEngineeringVol．35No．3Mar．2017221116SBＲ。。90%。。。DOI10.13205/j．hjgc．201703008EFFECTOFMAGNETICFIELDONＲUNNINGPEＲFOＲMANCEOFSHOＲTCUTNITＲIFICATIONPＲOCESSZHOUXiao-weiLUYu-miaoCHENLuWANGQianJIAWen-linSchoolofChemistryandChemicalEngineeringJiangsuNormalUniversityXuzhou221116ChinaAbstractTwoSBＲswereusedtoachievetheshortcutnitrificationprocessatroomtemperatureandoneofthemSBＲwasexposedtomagneticfieldMFtoinvestigatetheimpactsofMFonthestartupofshortcutnitrificationprocessandthesynthesisofextracellularpolymericsubstanceEPS．TheresultsshowedthatTheshortcutnitrificationprocesscouldbeachievedmorequicklyinthereactorwithMFandMFcouldshortenthestartupperiodandkeeptheprocessrunningstably．WithMFexposedthenitriteaccumulationrateinthereactorreached90%whichwassignificantlyhigherthanthereactorwithoutMF．TheexistenceofMFcouldenhancetheoxygenuptakerateandammoniumutilizationleadtolowdissolvedoxygenconcentrationinthereactorwhichfavoredthegrowthofammoniumoxidizingbacteriaAOB．InadditiontheMFstimulatedthesynthesisandsecretionofEPSwhichwasinfavoroftheformingofmicroaerobicregion．ItcouldenhancetheactivityofAOBandcouldincreasetheaccumulationofnitrite．KeywordsshortcutnitrificationmagneticfieldnitriteaccumulationEPS*15KJB610005HXKY2015B002。2016－07－010、、1-3。NOBDO、pH、、、4。35℃5。。6。。7-9。Niu310。。。。11.12SBＲＲ1Ｒ22L1。－6h5min1h3h1h10min45min。1L。200mL/min。1L50%HＲT12h。10～12d。20～25℃pH7.5～8.0。Ｒ2210mTＲ1。1Fig．1Schematicdiagramoftheexperimentalsystem．1.2、2ρMLSS3000mg/L。1。ρCOD400mg/LρNH+4－N120mg/LρTP5mg/L。1Table1IngredientsofsyntheticwastewaterρCH3COONa/mg·L－1512.5ρMgSO4·7H2O/mg·L－110ρNH4Cl/mg·L－1458.5ρFeSO4·7H2O/mg·L－110ρNaHCO3/mg·L－1200ρCaCl2·2H2O/mg·L－110ρKH3PO4/mg·L－1111mL/LρK2HPO4·3H2O/mg·L－118.4H3BO30.15g/LCuSO4·5H2O0.03g/LKI0.18g/LMnCl2·4H2O0.12g/LNa2MoO4·2H2O0.06g/LZnSO4·7H2O0.12g/LCoCl2·6H2O0.15g/LEDTA10g/L。1.32NH+4－N、NO－2－N、NO－3－NMLSS、MLVSS、SV。EPS11。NH+4－N12NO－2－NN-1--12NO－3－N1211Lowry11MLSS、MLVSS、SV12。pHPHS-3CpHDOHQ30d。22.122。2NO－3－NNO－2－N0。NO－3－NNO－2－N。2NO－3－NNO－2－N。182。Ｒ2NO－3－NＲ1NO－2－NＲ1NO－2－N20%～64%。42Ｒ2NO－2－NＲ154。。5335—■—NH+4－N——Ｒ1NO－3－N——Ｒ1NO－2－N——Ｒ2NO－3－N——Ｒ2NO－2－N。2Fig．2Nitrogenconcentrationsininfluentandeffluentinstartupperiodoftworeactors2。2NH+4－N98%2。23hNH+4－N。2NO－3－NNO－2－N。Ｒ2ρNO－2－N59.8mg/L90%Ｒ1NO－3－N10%。Nitrosomonaseuropaea9。1013。2Table2NitrogencontentininfluentandeffluentinstablerunningperiodNH+4－NNO－3－NNO－2－N/mg·L－1/mg·L－1/%/mg·L－1/mg·L－1/%/mg·L－1/mg·L－1/%Ｒ1102.892.5897.50.2010.5816.60.1953.2383.4Ｒ2102.891.9398.10.206.7410.10.1959.8189.92.2pH、DO3。2pH7.5～8.1。pH7.9～8.2pH7.514pH。pH。pH。2DO02DO。Ｒ1ρDO0.5～1.0mg/L2.0mg/LＲ2ρDO0.5～0.7mg/LＲ1DO。、15。16-17。Ｒ2DOa—Ｒ1b—Ｒ2。—■—NH+4－N—+—pH—▲—NO－2－N—*—DO—●—NO－3－N。3Fig．3Nitrogentransformationduringatypicalrunningcycleinreactors633Ｒ2。2。NH+4－N。2NO－2－N。NO－3－N0。NH+4－NNO－2－NNO－3－N。Ｒ2NH+4－NＲ1。120minＲ2NH+4－N1.1mg/minＲ123%Ｒ2。TomskaWolny7。Ｒ2NO－2－N0.77mg/minＲ138%NO－3－NＲ1。。2.3、、。24。Ｒ2Ｒ1。Ｒ219.740.2mg/gＲ121%12.7%。。18。6。。19。。4Fig．4EPScontentintheactivatedsludgefromdifferentreactorsinstablerunningperiod3。90%83%。。。1WeiDDuBZhangJetal．CompositionofextracellularpolymericsubstancesinapartialnitrificationreactortreatinghighammoniawastewaterandnitrousoxideemissionJ．BioresourceTechnology2015190474-479.2．J．201331588-93.3．SBＲJ．2014321066-70.4．SBＲJ．2015352403-409.5．J．293516-520.6DiniLAbbroL．Bioeffectsofmoderate-intensitystaticmagneticfieldsoncellculturesJ．Micron2005363195-217.7TomskaAWolnyL．EnhancementofbiologicalwastewatertreatmentbymagneticfieldexposureJ．Desalination20082221/3368-373.427335。1ThurstonCF．ThestructureandfunctionoffungallaccaseJ．Microbiology1994140119-26.2GiardinaPSanniaG．LaccasesOldenzymeswithapromisingfutureJ．CellularandMolecularLifeSciences2015725855-856.3CabanaHAhamedALeducＲ．ConjugationoflaccasefromthewhiterotfungusTrametesversicolortochitosananditsutilizationfortheeliminationoftriclosanJ．BioresourceTechnol201110221656-1662.4．J．2014306911-919.5．NF-05J．2011304604-611.6KunamneniAGhaziICamareroSetal．Decolorizationofsyntheticdyesbylaccaseimmobilizedonepoxy-activatedcarriersJ．ProcessBiochem2008432169-178.7．/24-J．2016301201-209.8．SiO2J．20123321104-108.9．SiO224-DCPJ．．2011991324-1328.10LiuYuanyuanZengZhuotongZengGuangmingetal．ImmobilizationoflaccaseonmagneticbimodalmesoporouscarbonandtheapplicationintheremovalofphenoliccompoundJ．BioresourceTechnology201211521-26.11WuMinHeQinZuoYonggangetal．Studiesonimmobi-lizationofpapainbasedoninorganic-organichybridgelofmicro-nano-scaleJ．ActaChimicaSinica201169121475-1482.12．－J．201432624-28.13．J．200823494-99.14YangZhengpengSiShihuiZhangChunjing．StudyontheactivityandstabilityofureaseimmobilizedontonanoporousaluminamembranesJ．MicroporousandMesoporousMaterials20081111/3359-366.15QiuGMZhuBKXuYY．alpha-AmylaseimmobilizedbyFe3O4polystyrene-co-maleicanhydridemagneticcompositemicrospheresPreparationandcharacterizationJ．JournalofAppliedPolymerScience2005952328-335.1966－。1966－。櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅[e-mail]2010101228535-8540.9FilipicJKraigherBTepusBeta