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SBR*1212131.1100042.1100343.115000SBR。pH7.5~8.07.5mg/L1.4412.23mg/L7.5mg/LSEM7.5mg/LEPS。SBRSEMDOI10.13205/j.hjgc.201608005THEEFFECTOFDOSINGHYDRAZINEONSHORTCUTNITRIFICATIONINSBRLINa12HUXiao-min1LIGuo-de2JIANGBin-hui1SunZhaonan31.SchoolofResourcesandCivilEngineeringNortheasternUniversityShenyang110004China2.ExperimentalCenterofShenyangNormalUniversityShenyang110034China3.DepartmentofChemicalEngineeringYingkouInstituteofTechnologyYingkou115000ChinaAbstractInordertodevelopanefficientbiologicalnitrogenremovalprocesstheeffectsofhydrazineonshortcutnitrificationanddenitrificationinSBRwasresearched.TheresultsshowedthattheoptimumconditionofnitriteaccumulationwasasfollowsRoomtemperaturenocontrollingthedissolvedoxygenandpHof7.5~8.0dosinghydrazineof7.5mg/L.Whendosinghydrazineof7.5mg/Ltheeffluentammonianitrogenandnitritenitrogenwere1.4412.23mg/Lrespectivelywhichwerebetterthanthatofotherdosageofhydrazine.Thenumbersandkindsofmicrobesintheactivatedsludgewithdosinghydrazineof7.5mg/Lwerericherthanthatoftheactivatedsludgewithoutdosinghydrazine.SEMimageshowedwhenthestructureofactivatedsludgewithdosinghydrazineof7.5mg/Lwasdensecompactandthenumberofbacterialcolonyincreasedsignificantly.Theactivatedsludgeinfraredspectroscopyshowedthatthepositionofcharacteristicpeakbasicallythesamewithaddinghydrazineornotbutwhendosinghydrazineof7.5mg/Ltheintensityofitspeakwashigher.KeywordsSBRshortcutnitrificationhydrazinemicrobesSEMinfraredspectrum*“”2013ZX07202-010L2014437F15-199-1-2120152016353358。2015-12-2201-2。3-5。6-8。25%40%50%pH9-12。22EnvironmentalEngineeringpH、DO、、、、13-18。11.11。。。pHpH。1Fig.1Technologicalprocessoftheexperiment1.2ρSVI、ρMLSS、ρVSS66.8746203370mg/L。NH4ClC6H12O6。NaHCO3400mg/LCaCl24mg/LKH2PO440mg/LMgSO4·7H2O40mg/LFeCl3375mg/LH3BO337.5mg/LCuSO4·5H2O7.5mg/LKI45mg/LMnSO4·H2O25.69mg/LZnSO4·7H2O30mg/LEDTA2500mg/LCoCl2·6H2O50mg/LNa2MoO4·2H2O20mg/L。1.3ULTRAPLUSGermany。pH7.425%4℃3hpH7.40.2mol/L310min50%、70%、80%、90%10~15min100%310~15min100%∶1∶1115min12h。1.430min30min320000r/min20min。EPS0.45μm。1.5《》。1。1Table1AnalyzingmethodsofexperimentalwastewaterqualitypHCODNH+4-NNO-2-NN-1--NO-3-NMLSSMLVSS22.1pH7.5~8.04300mg/LρDO>6mg/LDO。57.51012.5mg/L。111d12、3。21057.51012.5mg/L2.744.831.443.475.36mg/L。332WaterPollutionControl—■——●—0mg/L—▲—5mg/L—□—7.5mg/L—△—10mg/L—☆—12.5mg/L。2Fig.2VariousofeffluentNH+4-Nwithdifferenthydrazineconcentration—●—0mg/L—▲—5mg/L—□—7.5mg/L—△—10mg/L—☆—12.5mg/L。3Fig.3Variousofeffluentnitritewithdifferenthydrazineconcentration2.171112.2310.49mg/L。7.5mg/L。2.27.5mg/L4。。2.37.5mg/L5。、。2.47.5mg/LEPS6。a、bc、d、e、f7.5mg/L。4Fig.4Thebiofaciesintheactivatedsludgea—b—。5SEMFig.5TheSEManalysisofthemicrobialintheactivatedsludgeEPS。3400cm-1—OHN—H1600cm-1CO1400cm-1C—H1100cm-1C—O。900cm-1、。317.5mg/L1.4412.23mg/L。27.5mg/L42EnvironmentalEngineeringa—b—。6EPSFig.6InfraredspectrumoftheEPSofactivatedsludge。37.5mg/LSEM、。47.5mg/LEPSEPS。1LuJJinQHeYLetal.SimultaneousremovalofphenolandammoniumusingSerratiasp.LJ-1capableofheterotrophicnitrification-aerobicdenitrificationJ.WaterAirSoilPollut2014225921-25.2HossainFChangNBWanielistaMetal.Nitrificationanddenitrificationinapassiveon-sitewastewatertreatmentsystemwitharecirculationfiltrationtankJ.WaterQualExpoHealth20102131-46.3LiXMXiaoYLiaoDXetal.SimultancousremovalofphenolandammoniumusingScrratiasp.granulationofsimultaneouspartialnitriticationandanammoxbiomassinonesingleSBRsystemJ.ApplBiochemBiotechnol20111631053-1065.4FangFNiBJLiXYetal.Kineticanalysisonthetwo-stepprocessesofAobandNOBinaerobicnitrifyinggranulesJ.ApplMicrobiolBiotechnol20098361159-1169.5.—J.2012273408-412.6.J.2013541-45.7.J.20154213119-120.8.J.2015355-58.9.SBRJ.201430311-13.10KhinTAnnachhatreAP.NovelmicrobialnitrogenremovalprocessesJ.BiotechnologyAdvances2004227519-532.11ChungJBaeWLeeYWetal.Shortcutbiologicalnitrogenremovalinhybridbiofilm/suspendedgrowthreactorsJ.ProcessBiochem2007423320-328.12.J.2011311153-56.13ZhangLQWeiCHZhangKFetal.EffectsoftemperatureonsimultaneousnitrificationanddenitrificationvianitriteinasequencingbatchbiofilmreactorJ.BioprocessBiosystEng2009322175-182.14GuoXKimJHBeheraSKetal.InfluenceofdissolvedoxygenconcentrationandaerationtimeonnitriteaccumulationinpartialnitrificationprocessJ.IntJEnvironSciTech200854527-534.15WangFLiuYWangJHetal.Influenceofgrowthmanneronnitrifyingbacterialcommunitiesandnitrificationkineticsinthreelab-scalebioreactorsJ.JIndMicrobiolBiotechnol2012394595-604.16GaneshRSousbiePTorrijosMetal.NitrificationanddenitrificationcharacteristicsinasequencingbatchreactortreatingtannerywastewaterJ.CleanTechnEnvironPolicy2015173735-745.17WangXLMaYPengYZetal.Short-cutnitrificationofdomesticwastewaterinapilot-scaleA/OnitrogenremovalplantJ.BioprocessBiosystEng200730291-97.18SinhaBAnnachhatreAP.Partialnitrification—operationalparametersandmicroorganismsinvolvedJ.RevEnvironSciBiotechnol200764285-313.1981-。lina218@126.com1958-。hxmin_jj@163.com52WaterPollutionControl
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