NaClO对膨胀污泥中微生物的影响李志华

NaClO710055NaClO。M．parvicel-laNaClO50%NaClO。NaClO。NaClO、。NaClOX703A1000－4602201607－0040－052015－K63201320136120110002EffectofNaClOonMicroorganismsinBulkingSludgeLIZhi-huaYANGZhen-dingYANGCheng-jianLIUZong-yuLIUHuanZHUKe-chenKeyLaboratoryofNorthwestWaterＲesourcesEnvironmentandEcology＜MinistryofEducation＞SchoolofEnvironmentalandMunicipalEngineeringXi’anUniversityofArchitectureandTechnologyXi’an710055ChinaAbstractTheeffectofNaClOonmicrobialactivityofbulkingsludgefromsewagetreatmentplantwasinvestigatedbyfieldtestandlaboratoryanalysis．TheresultsshowedthatthefilamentousbacteriumcausingsludgebulkinginaWWTPinWeinanCityShaanxiProvincewasMicrothrixparvicella．NaClOcannoteffectivelycontrolMicrothrixparvicellabutdepressedammonianitrogenremovalrateby50%withoutanyimprovementofsludgesettleability．TheinhibitionofNaClOonheterotrophicbacteriawa-sweakbutonautotrophicbacteriawassignificant．Atthesametimetemperaturecouldalsoaffectthelastingtimeofinhibitiononautotrophicbacteria．Thelowerthetemperaturewasthelaterthemaximumendogenousrespirationratetimeoccurredandthelongertheinhibitiontimewas．SowhenusingNaClOtoinhibitsludgebulkingthetypeofthefilamentousbacteriatherecoveryabilityofautotrophicbacteriaandotherfactorsshouldbetakenintoaccountforgoodsettleabilityandrapidrecoveryofeffluentquali-ty．KeywordssludgebulkingNaClOMicrothrixparvicellaautotrophicbacteriahetero-trophicbacteriarespirationrate·04·32720164CHINAWATEＲ＆WASTEWATEＲVol．32No．7Apr．2016NaClO。、NaClO。、、NaClO。11.1A2O3×104m3/d1．5×104m3/d。201411SVI260mL/g4～5。1.212OUＲT、OUＲen、OUＲAOUＲHWBM4003MLSSSOUＲ。4IWA56。1.320141229NaClO420141230—201513NaClO、2015616618—200．3%NaClO。1.3.1①。②40、20、50、100mg/L12hNaClO。③NaClONaClO11～13℃5d4．65t。1230、1112。1。1NaClOTab．1DailydosageofNaClO/kg/%2014－12－305000．132014－12－316500．172015－01－0110000．262015－01－0212000．322015－01－0313000．341.3.222～24℃DO3～4mg/L。。617、2026lnOUＲ—tNaClO。、。22.12.1.1EikelboomM．parvicella。·14·．watergasheat．comNaClO3272.1.2NaClONaClOSOUＲ1。20mg/L。50mg/LNaClOSOUＲASOUＲH≤50mg/L100mg/LSOUＲH73．3%7。OUＲen/OUＲT10．7%20mg/L17．6%NaClO20mg/L。6420SOUR/(mgO2·g-1SS·h-1)20181614121086/％02050100/(mg·Ｌ－1)SOURenSOURＡSOURＨSOURＴ1Fig．1Effectsofdifferentdosagesofchloro-oxidantsonsludgeactivity2.1.3NaClO2。NaClOSVI260mL/g300mL/g。90%50%40mg/L。NaClO4～5。NaClO4。SVI。NaClO。100908070605040302010NH4-N/(mg·Ｌ－１)[phone]/％ＳＶＩ/（mL·g-1）9590858075706560555045３0０25０20０15０10０２０１４－１２－27２０１４－１２－29２０１４－１２－30２０１5－01－01２０１5－01－02２０１5－01－05２０１5－01－06２０１5－01－07２０１5－01－13２０１5－01－15２０１5－01－17ＳＶＩ2NH+4－NFig．2VariationofsludgesettleabilityandNH+4－Nremovalrate2.1.4NaClO3。SOUＲen。SOUＲA。SOUＲA40mg/L。SOUＲH316SOUＲH。316。８SOUR/(mgO2·g－１SS·h-1)２０１４－１２－２５０２０１４－１２－27２０１４－１２－29２０１４－１２－30２０１5－01－01２０１5－01－02２０１5－01－05２０１5－01－06２０１5－01－07２０１5－01－13２０１5－01－15２０１5－01－17SOURenSOURＡSOURＨSOURＴ７６５４３２１４０３２２４１６８０/%3Fig．3Variationofrespirograminscaletrial38%～16%·24·327．watergasheat．com。16%。2.2NaClOSVI260mL/g。SOUＲHSOUＲANaClO。NaClO2015616SVI200mL/gNaClO。2.2.14。SOURenSOURＡSOURＨSOURＴ7SOUR/(mgO2·g－１SS·h-1)6１６-26５４３２１6456/%0-1484032241680-8-16-246176１86196206216226236246256266276284Fig．4VariationofrespirograminlaboratoryanalysisSOUＲHNaClO13SOUＲH46．9%46．9%53．1%。SOUＲANaClOSOUＲHSOUＲA。NaClOSOUＲHSOUＲA1．5SOUＲA。NaClO1SOUＲASOUＲHSOUＲH50．5%NaClO。。311～13℃422～24℃34SOUＲANaClO333%SOUＲA2154．6%。NaClO。2.2.2NaClO617、NaClO620、NaClO62635。5.85.65.25.04.84.60.41.22.02.83.65.04.84.61.41.21.00.42.02.83.64.44.4ln(OUR)1.2617620626617620626ln(OUR)t/ha.t/hb.1.81.65Fig．5Growthcurvesofheterotrophicandautotrophicbacteria5a8。5bNaClONaClO·34·．watergasheat．comNaClO327NaClO8。NaClOVSSNaClO6626VSSNaClO25．4%9．26%NaClO654．5%。MLVSS15%～60%910NaClONaClO。3①0．3%NaClOM．parvicella50%NaClONaClO。②NaClO。③。NaClO。1．J．2015311139－42．2ZielinskaMBernatMCydzik-KwiatkowskaAetal．Ｒespirometricactivityofactivatedsludgeinsequencingbatchreactordependingonsubstrateanddissolvedoxy-genconcentrationJ．EnvironProtEng201238241－49．3．J．201531725－28．4JenkinsDＲichardMGDaiggerGT．ManualontheCausesandControlofActivatedSludgeBulkingFoa-mingandOtherSolidsSeparationProblemsM．Lon-donIWAPublishing2003．5HenzeMGujerWMinorTetal．ActivatedSludgeModelsASM1ASM2ASM2dandASM3Ｒ．Lon-donIWAPublishing2000．6APHA．StandardMethodsfortheExaminationofWaterandWastewater19theditionM．WashingtonDCAPHA1995．7HaoXWangQZhangXetal．Experimentalevaluationofdecreaseinbacterialactivityduetocelldeathandac-tivitydecayinactivatedsludgeJ．WaterＲes200943143604－3612．8YatesGTSmotzerT．Onthelagphaseandinitialde-clineofmicrobialgrowthcurvesJ．JTheorBiol20072443511－517．9UbisiMFJoodTWWentzelMCetal．ActivatedsludgemixedliquorheterotrophicactivebiomassJ．WaterSA1997233239－248．10MajewskyM．ActiveheterotrophicbiomassandsludgeretentiontimeSＲTasdeterminingfactorsforbiodeg-radationkineticsofpharmaceuticalsinactivatedsludgeJ．BioresourTechnol2011102167415－7421．1976－。[e-mail]2016－01－17·44·327．watergasheat．com