超声波参数对短程硝化的影响朱易春

121212121231．3410002．3410003．100872SBＲ20kHz。AOBNOB。0．05W/mL20min23kJ/gVSS。SBＲNH+4－N2．54mg/gVSS·hNAＲ59．6%。AOB8．06mgO2/gVSS·h114%。EPS、62．0%、200．3%30．1%。。TU992A1000－4602201805－0026－0651464014GJJ150615NSFJ2015－K04YC2016－S312EffectofUltrasoundParametersonPartialNitrificationZHUYi-chun12WANGJia-qi12ZHANGZhang12LIANJun-feng12LIUZu-wen12ZHANGGuang-ming31．JiangxiProvincialKeyLaboratoryofEnvironmentalGeotechnologyandEngineeringDisasterControlGanzhou341000China2．ＲesearchCenterforWaterQualitySecurityTechnologyatGanjiangＲiverBasinJiangxiUniversityofScienceandTechnologyGanzhou341000China3．SchoolofEnvironment＆NaturalＲesourcesＲenminUniversityofChinaBeijing100872ChinaAbstractInordertoinvestigatetheeffectofultrasoundparametersonpartialnitrificationsixse-quencingbatchreactorsSBＲswereobtained．CondensedsludgeinSBＲswastreatedbyultrasoundwithdensityfrom0．05W/mLto0．4W/mLandirradiationtimerangingfrom10minto90minatafrequencyof20kHz．Ｒesultsshowedthatbioactivityofammonia-oxidizingbacteriaAOBwasenhancedbyultra-soundwhilethatofnitrite-oxidizingbacteriaNOBwassuppressedsimultaneously．Theoptimalultra-sonicdensityandirradiationtimeforstimulatingpartialnitrificationwere0．05W/mLand20minrespec-tivelyunderwhichultrasonicenergywas23kJ/gVSS．UndertheoptimalconditionNH+4－NremovalloadinSBＲwas2．54mg/gVSS·handNO－2－NaccumulationrateNAＲreached59．6%whichindicatedthatevenwithexcessiveaerationoperationpartialnitrificationcouldbemaintainedbyultra-·62·34520183CHINAWATEＲ＆WASTEWATEＲVol．34No．5Mar．2018soundwithsuitableparameters．AOBbioactivityreachedthemaximunof8．06mgO2/gVSS·hatul-trasonicenergyof23kJ/gVSSwhichwasincreasedby114%comparedwiththecontrol．UnderthesameconditionsludgeextracellularpolymericsubstancesEPSproteinandpolysaccharideconcentra-tionswereincreasedby62．0%200．3%and30．1%comparedwiththecontrolwhichrevealedthatul-trasoundirradiationcouldacceleratecellmetabolismthenenhanceEPSyield．Ultrasoundwithappropriateenergyisafeasiblestrategytoretainpartialnitrification．Keywordspartialnitrificationultrasoundultrasonicdensityirradiationtime12。C/NNO－2－NNO－3－NNOBAOB。DO、/、FANOB13。AOBNOB45。643．2kJ/gVSSNO－2－N。Zheng7SBＲ130kJ/gVSS。8。SBＲC/NAOBNOBEPS。11.16SBＲ10cm1L1。80～100L/h18～21℃。50%。SBＲ5min6h/9h50min5min。/6h21h/1h20．5h/0．5h9h31h/1h30．5h/0．5h。转子流量计曝气砂头时控器空压机1Fig．1Schematicdiagramofexperimentalequipment1012mg/L229mg/L26mg/L9mg/L50mg/L21mg/L。COD、、300、603mg/L。pH7．5～8．5。1.220kHz6mm。SBＲ500mLMLVSS4600～6600mg/L10mmSBＲ。SBＲ24h。1.3SBＲ。10min0．05、0．1、0．2、0．30．4W/mLSBＲ6h。·72·．watergasheat．com34510、20、40、6090min9hAOBNOBSBＲEPS。1.4NH+4－N、NO－2－N、NO－3－N、MLSSMLVSSDOpHpH。AOBNOBSBＲ100mL400mL15min。OUＲNH+4－NNO－2－N20mg/LSOUＲAOBSOUＲNOB9。EPS10－DNA。22.1SBＲ10dNH+4－N、NAＲ、NO－2－NNO－3－N2。3210ＮＨ4-N去除负荷/（mg·g-1VSS·h-1）0.46420+NO3-N/（mg·L-1）-声能密度/（W·mL-1）a.NH4-N去除负荷+b.NO3-N-1612840ＮO2-N/（mg·L-1）NAR/%90603000.30.20.10.050声能密度/（W·mL-1）0.40.30.20.10.050-d.ＮＡＲ0.40.30.20.10.050声能密度/（W·mL-1）c.NO2-N-0.40.30.20.10.050声能密度/（W·mL-1）2Fig．2VariationofnitrogentransformationwithultrasonicdensityNH+4－NNH+4－N。2aNH+4－N2．0～2．4mg/gVSS·h。SBＲNO－2－NNO－3－NNO－2－N。NAＲ0．05W/mLNAＲ82．3%0．4W/mL87．1%5．8%。0．05W/mL。2.2SBＲDODO＞3mg/LNH+4－N＞99%SBＲ。1NAＲ42．4%～64．4%9dSBＲ3。2.82.42.01.6ＮＨ4-N去除负荷/（mg·g-1VSS·h-1）91011121314302010091011121314+NO3-N/（mg·L-1）-t/da.NH4-N去除负荷+t/db.NO3-N-0min10min20min40min60min90min3020100ＮO2-N/（mg·L-1）NAR/%80604020091011121314-t/dc.NO2-N-91011121314t/dd.ＮＡＲ3SBＲFig．3VariationofSBＲperformancewithultrasonicirradiationtimeduringstableoperation3aSBＲNH+4－N2．2～2．8mg/gVSS·hNH+4－N1．7～1．8mg/gVSS·h。DONH+4－N。9～14dNO－2－N＜0．1mg/LNO－3－N＞24．7mg/L。NO－2－N5mg/LNO－2－N。。NAＲ50%NO－2－N。3dNAＲ。10、4090min·82·345．watergasheat．comSBＲNAＲ50%。20min60min50%60．6%73．2%。11NAＲ12d96%39．3%NO－2－NDONOB。0．05W/mL、2060minSBＲNOB。Zheng7pH。。1213。。9～14d2060minNH+4－N2．542．67mg/gVSS·h41%48%。0～20minNAＲ20minNO－2－N18．7mg/LNO－3－N12．7mg/LNAＲ59．6%。40minNO－2－NNO－3－NNAＲ28．6%。60minNO－2－NNO－3－N21．711．7mg/LNAＲ64．9%。90minNAＲ。AOBNOB。AOBNOB47。NAＲAOBNOB。2.3SOUＲAOBSOUＲNOBAOBNOB9AOBNOB14。SBＲSOUＲAOBSOUＲNOBSOUＲAOBSOUＲNOB4。120100806040200-20-4090超声波辐照时间/minＳＯＵＲ增长率/%60402010AOBNOB4SOUＲAOBSOUＲNOBFig．4GrowthrateofSOUＲAOBandSOUＲNOBunderdifferentultrasonicirradiationtimecomparedwithcontrol4SOUＲAOBSOUＲNOB10～90minAOBNOB。Lin15。。NOB。AOB。、、。AMOAOBNH36AMO。NOB。4AOBSOUＲAOB20min8．06mgO2/gVSS·h114%。20minAOB。60minSOUＲAOB。90minAOBSOUＲAOB。10～90minSOUＲNOB4．74～5．19mgO2/gVSS·hNOB。≥9NOBSOUＲNOB。AOB、NOBNO－2－N。SOUＲAOBSOUＲNOB·92·．watergasheat．com34520min2．97mgO2/gVSS·h40min1．87mgO2/gVSS·h60min2．27mgO2/gVSS·h。NAＲ。2.4EPS、DNAEPS。14EPS5。2001501005090辐照时间/min含量/(mg·g-1VSS)604020100蛋白质多糖ＤＮＡＥＰＳa.各组分含量10080604020001020406090辐照时间/min占比/%DNA多糖蛋白质b.各组分占比5EPSFig．5ChangeofEPSwithultrasonicirradiationtime5aEPS、、DNA。EPS20min62．0%66．2131．6mg/gVSS200．3%30．1%。EPSEPS16。5bEPS。20～90min26．6%～33．2%17．4%60．2%～66．0%79．6%EPS。＜40minDNA3．0%～4．6%40minDNA13．1%DNA。。20min23kJ/gVSS。Zheng7130J/mgVSSMLVSS1500mg/L82%。。0．2W/mL12min。0．05W/mL20min。。。30．05W/mL10～90minAOBNOB2060min。20min20min。23kJ/gVSS。1GeSWangSYangXetal．Detectionofnitrifiersandevaluationofpartialnitrificationforwastewatertreat-mentareviewJ．Chemosphere201514085－98．2．J．20153410