改性粉煤灰对铜绿微囊藻的去除效果及影响因素研究

、N、P。、。、。。[1-4]。———、。。11.1ARMicrocystisaeruginosa。UV-1800MY3000-6Phyto-PAMOptima2100DVZetaZetasizerNanoZTOC-V-CPN。1.2BG11[5]。[6]。7dOD680nm0.1004.78×106/mL[7]。1.35g28%6mL70℃20h。。1.4pH。0.1mol/LNaOH0.1mol/LHClpH4.52、6.00、7.22、8.45、9.97、10.45pH9.97、。。1234211.0560382.2000923.7100724.200092DOC、。56mg/L92.4%100mg/LDOC91.7%。。160mg/L。TU991.27TQ314.253A1000-3770(2015)[e-mail][e-mail]41120151TECHNOLOGYOFWATERTREATMENTVol.41No.1Jan.,201556680nm0.025、0.046、0.098、0.149、0.201。、。1.51.5.1250mL300mL250r/min3min30r/min10min30min2cm680nm。=1-/。1.5.2DOC1.5.10.45μmTOCDOC。1.5.31.5.11h3mL7minΦPSYield。1.5.412250mL150mL、100mL10、15、20、40、60、100、150、300mg40、60、80、160、240、400、600、1200mg/L10s。1～2d2cm1.5.1Phyto-PAM。。22.11.5.11。156mg/L92.4%、、。[6]。31[8-9]2、、、[10]3。2.2DOC、[11]。DOC。DOC2。2100mg/L91.7%。600mg/L92%。OD68055mg/LOD680DOC76.2%。DOC。DOCDOC。DOC[12]。2.3pHpHζ。pH3。3pH=7.2256mg/L99%。pH=4.5232mg/L19.2%。pH。1Fig.1Removaleffectofmicrocystisaeruginosabythedosageofmodifiedflyash050100150200250020406080100
/%/(mgL)2DOCFig.2RemovaleffectofDOCbymodifiedflyash0501001502002503000.000.020.040.060.080.100.12
/(mgL)OD6800369121518ρ(DOC)ρ(DOC)/(mg·L-1)57100mg/L90%。pH=6、8.459.9780～92mg/L90%。pH=10.45150mg/L。2.44。。4。OD6805。5。。2.56。6160mg/L160mg/L280mg/L60.5%。、。80～160mg/L。2[13]。2－57。72。160mg/L2－51200mg/L2－50.23～0.350.10.073240、280、360mg/L5200～360mg/L18.4%。200mg/L。5d。3pHFig.3RemovaleffectofMicrocystisaeruginosabymodifiedflyashwithdifferentpH04080120160200020406080100
/(mgL)/%4Fig.4RemovaleffectofMicrocystisaeruginosabymodifiedflyashwithdifferentconcent050100150200250020406080100
/(mgL)/%5Fig.5Therelationbetweenminimumeffectivedosageofmodifiedflyashandinitialabsorbanceofalgaesolution0.000.050.100.150.200.25050100150200250
/(mgL)OD6806Fig.6Effectofthedosageofmodifiedflyashonalgaeactivity050100150200250300350400020406080100
/%/(mgL)
0.00.10.20.30.40.575dFig.7Influenceofmodifiedflyashtoalgalactivityin5d0501001502002503003504000.00.10.20.30.40.5
/(mgL)411582.61.5.430d8。8OD680。400mg/L30dOD680。80mg/L17d6OD680。17dOD68030d42.3%。400mg/L400mg/L600mg/L2。1200mg/L。3、6、17、21Phyto-PAM9。9。1200mg/L22.8%。600mg/L。。30d。。1200mg/L22.8%。。pH。。。356mg/L92.4%。DOC。100mg/LDOC91.7%。DOC。。。160mg/L。160mg/L。。。1200mg/L。30d。22.8%。[1],,,.[J].,2007,23(17):61-65.[2],,.[J].,2009,30(2):407-410.[3],,,.[J].,2009,35(9):98-100.[4],,.[J].,2009,35(8):23-26.[5].[M].:,2005.[6],,,.[J].,2011,37(6):34-37.[7],,.[J].,2004,25(6):40-43.[8].[J].,2008,28(4):1-5,9.[9],,,.[J].,2006(3):18-20.8Fig.8Longterminfluenceofmodifiedflyashtoalgalgrowth051015202530350.00.20.40.60.81.0OD680t/d0801604006001200
/mgL9Fig.9Longterminfluenceofmodifiedflyashtoalgalactivity05101520250.00.10.20.30.40.50.6
t/d59THEINFLUENCEOFPORE-FORMINGAGENTSANDADDITIVESONTHEPROPERTIESOFCELLULOSEACETATEFORWARDOSMOSISMEMBRANELiuZiwen,HuangXiaorong,ZhangHanquan(SchoolofChemistryandChemicalEngineering,SouthChinaUniversityofTechnology,Guangzhou510640,China)Abstract:Theforwardosmosismembranewaspreparedinthemethodofphaseinversion,withcelluloseacetateasthefilm-formingmaterialandhydrophilicpolyethersulfonemembraneasthesupportingmaterial.Theeffectofdifferentpore-formingagentsandadditivesonthepropertiesofforwardosmosismembranewasinvestigatedduringtheprocessofmembranepreparation.TheresultsindicatedthatthewaterfluxandNaClrejectionwere14L/(m2·h)and99.99%respectivelywiththelacticacidasthepore-formingagent.TheresultsoftheforwardosmosisexperimentweresimilarwhenthequalityofvolumeofZnCl2andlacticacidwas1:1.65andotherconditionsoftheexperimentwerethesame.ThewaterfluxandNaClrejectionoftheexperimentofforwardosmosiswere20L/(m2·h)and99.9%whenthepolyethyleneglycolwhoserelativemolecularmassislessthan1000,itwasusedasthepore-formingagent.CNTandgrapheneoxidecouldimprovethepropertiesoftheforwardosmosismembranewhentheyweretheadditivesandthewaterfluxandNaClrejectionwere17L/(m2·h)and99.97%whenthelacticacidwasthepore-formingagent.Keywords:celluloseacetate;forwardosmosis;additive;pore-formingagentTHEFUNCTIONOFNITRITENITROGENINTHEFORMATIONOFHALONITROMETHANESDURINGCHLORAMINATIONOFORGANICMATTERMADEFROMFALLINGLEAVESOFPHOENIXTREESXiaoZhuoqun,QianLingya,ZhangXi,XuLongqian,HuangQiulin,ZhangXin,HongHuachang(CollegeofGeographyandEnvironmentalSciences,ZhejiangNormalUniversity,Jinhua321004,China)Abstract:Thefunctionofnitritenitrogenintheformationofhalonitromethanes(HNMs)duringchloraminationoforganicmattermadefromthefallingleavesofphoenixtreeswasinvestigatedtorecognizethekeyfactor.TheresultsshowedthatthenitritenitrogencouldenhancetheformationofHNMsgreatly,andthepromotionofHNMsyieldswassignificantlymoreobviousundertheconditionsofhighchloraminedose,acid/basicconditionandthelowtemperature.RangeanalysisrevealedthatpHvaluewasthemostimportantfactorinfluencingthenitritenitrogenpromotingHNMsfor