Ni2对SBR污水处理系统的影响赵丽

Ni2+SBR赵　丽1,2,　李晓晨3,　印华斌2(1.重庆大学城市建设与环境工程学院,重庆400045;2.河海大学环境科学与工程学院,江苏南京210098;3.山东农业大学水利土木工程学院,山东泰安271018)　　　:　针对Ni2+对活性污泥的影响问题,以SBR活性污泥系统为对象,研究了不同浓度Ni2+对污水处理系统的长期影响。结果表明,Ni2+对SBR系统的影响随其浓度的增大而增强。当Ni2+浓度为10mg/L时,Ni2+对SBR去除有机物和氨氮的抑制在试验前期不显著,后期则十分明显,SBR对COD和NH+4-N的去除率分别下降了19.8%和55.6%;当Ni2+浓度分别为20和40mg/L时,Ni2+对活性污泥的抑制作用明显,对COD和NH+4-N去除率的最大降幅分别为23.4%、68.0%和34.0%、75.3%。对比Ni2+对SBR去除COD和NH+4-N的抑制率发现,相同浓度的Ni2+对SBR去除NH+4-N的抑制明显高于SBR去除COD的,表明硝化菌对Ni2+的敏感性大于降解COD的菌种。　　:　Ni2+;　SBR;　抑制;　化学需氧量;　氨氮:X703　　:C　　:1000-4602(2010)11-0092-04EffectofNi2+onSBRWastewaterTreatmentSystemZHAOLi1,2,　LIXiao-chen3,　YINHua-bin2(1.FacultyofUrbanConstructionEnvironmentEngineering,ChongqingUniversity,Chongqing400045,China;2.CollegeofEnvironmentalScienceandEngineering,HohaiUniversity,Nanjing210098,China;3.CollegeofWaterConservancyandCivilEngineering,ShandongAgriculturalUniversity,Taian271018,China)　　Abstract:　ToinvestigatetheeffectofNi2+ontheactivityofactivatedsludge,SBRsystemwasem-ployedtotreatsyntheticwastewaterwithdifferentNi2+concentrations.TheresultsshowthattheeffectofNi2+onactivatedsludgeactivityincreaseswhentheconcentrationofaddedNi2+increases.Ni2+of10mg/LexertslittleeffectonSBRinearlierexperiment,buttheeffectincreasesinlaterexperiment,andtheremovalratesofCODandNH+4-Narereducedby19.8%and55.6%respectively.WhenNi2+concentrationsareincreasedto20mg/Land40mg/L,theinhibitionofNi2+onSBRissignificant,theremovalratesofCODarereducedby23.4%and34.0%,andthoseofNH+4-Narereducedby68.0%and75.3%respectively.UnderthesameNi2+concentration,theinhibitiononNH+4-NremovalisstrongerthanthatonCODremoval,indicatingthatthesensibilityofnitrifierstoNi2+ishigherthanthatofbacteriafordegradingCOD.　　Keywords:　Ni2+;　SBR;　inhibition;　COD;　ammonianitrogen　　:(20080431214)·92·第26卷　第11期2010年6月　　　　　　　　　　　　中国给水排水CHINAWATERWASTEWATER　　　　　　　　　　　　　Vol.26No.11Jun.2010　　、,,[1]。,Ni2+,()。Ni2+,Ni2+,Ni2+。,Ni2+5mg/L,[2、3];Ong[4],Ni2+10mg/L,Gikas[3],Ni2+。Ni2+,,Ni2+,SBR,Ni2+。1　材料与方法1.1　,(0.5g/L、0.3g/LNH4HCO3、0.06g/L、0.075g/LKH2PO4)SBR。,,CODNH+4-N80%,。1.2　SBR1,5L。1　SBRFig.1　SchematicdiagramofSBR4(A、B、C、D)。SBR4,6h,30min、240min、60min、15min、15min。8g/L,COD800mg/L,[(22±2)℃]。A、B、C、D4。,A,Ni2+;B、C、DNi2+10、20、40mg/L。Ni2+NiSO4·6H2O。1.3　pH:pH;COD:HACHCOD;:。2　结果与讨论2.1　Ni2+COD,,Ni2+,,,。2Ni2+,SBRCOD。2　Ni2+SBRCODFig.2　InfluenceofNi2+onremovalofCODbySBR2,,Ni2+A,COD(96.1±2)%,。Ni2+B、C、D,CODNi2+。Ni2+10mg/L,B8d,COD(94.1±3)%,;9,COD,13,COD,2375%,(20.9%)。,Ni2+10mg/L,SBRCODNi2+·93·赵　丽,等:Ni2+对SBR污水处理系统的影响第26卷　第11期,Ni2+,Ni2+,,。Ni2+,,COD。Ni2+20mg/L,,COD,,1.6%～23.4%,11.7%。Ni2+C10,COD,70%。40mg/LNi2+D,COD,3.8%～34.0%,17.7%,Ni2+。,D,Ni2+40mg/L,SBR,。2.2　Ni2+NH+4-NNH+4-N,,,。Ni2+SBRNH+4-N3。3　Ni2+SBRNH+4-NFig.3　InfluenceofNi2+onremovalofNH+4-NbySBRANH+4-N,SBRNH+4-N,100%,。Ni2+B、C、DNH+4-N13d;13dNH+4-N,Ni2+。NH+4-N,Ni2+10mg/L,Ni2+,,NH+4-N85%。14,NH+4-N73.4%,1844.4%,60%。Ni2+20mg/L,NH+4-N,13dNH+4-N70%,2d40%,,。,C60%。Ni2+40mg/L,Ni2+,NH+4-N,NH+4-N70%20%,80%。2.3　Ni2+SBRCOD23,Ni2+CODNH+4-N。A,3CODNH+4-NA。　Iij=(RiA-Rij)/RiA×100%(1)　Iij———jAi,iCODNH+4-N,jB、CD　RiA———Ai　Rij———ji4Ni2+SBRCODNH+4-N。4　Ni2+SBRFig.4　InhibitoryratioofNi2+onSBRsystem4,Ni2+SBRCOD·94·第26卷　第11期　　　　　　　　　　　　　　中国给水排水　　　　　　　　　　　　。Ni2+SBRCODNH+4-NNi2+,(2)(3)。　ICOD=0.0038[Ni2+]+0.0286　R2=0.97(2)　INH+4-N=0.0096[Ni2+]+0.1587　R2=0.99(3)(2)(3)[Ni2+],Ni2+COD(3),Ni2+COD。,COD,,,,;,,,。3　结论①　Ni2+SBRCODNH+4-NNi2+。Ni2+10、20、40mg/L,SBRCOD5.8%、11.7%17.7%;21.2%、41.6%52.3%。②　Ni2+SBRCODNH+4-N。Ni2+10mg/L,CODNH+4-N,,-0.8%-1.3%19.8%55.6%。Ni2+20mg/L,SBRCODNH+4-N(1.6%～23.4%)(15.5%～68.0%)。Ni2+40mg/L,SBRCODNH+4-N(3.8%～34.0%)(18.6%～75.3%)。③　Ni2+COD。Ni2+COD3。:[1]　GikasP.Singleandcombinedeffectsofnickel(Ni(Ⅱ))andcobalt(Co(Ⅱ))ionsonactivatedsludgeandonotheraerobicmicroorganisms:Areview[J].JHazardMater,2008,159(2-3):187-203.[2]　,,.[J].,2004,14(6):43-46.[3]　GikasP.Kineticresponsesofactivatedsludgetoindivid-ualandjointnickel(Ni(Ⅱ))andcobalt(Co(Ⅱ)):Anisobolographicapproach[J].JHazardMater,2007,143(1-2):246-256.[4]　OngSA,ToorisakaE,HirataM,etal.Effectsofnickel(Ⅱ)additionontheactivityofactivatedsludgemicroor-ganismsandactivatedsludgeprocess[J].JHazardMa-ter,2004,113(1-3):111-121.:15902375202E-mail:[e-mail]:2009-12-14更正　　本刊在2010年第26卷第8期第90页刊登的题为“离子液体萃取分光光度法测定水中四环素类抗生素”一文第一作者应为“王昕”,特此更正。·95·赵　丽,等:Ni2+对SBR污水处理系统的影响第26卷　第11期