含海水污水的短程硝化反硝化于德爽

,,,(,　150090,E-mail:[e-mail]):SBR(FA),,、pH、NH+4-N.:,NH+4-NNH+4-N,NH+4-N.NH+4-N0.15kg/(kg·d),NH+4-N90%.,20℃30℃,1.25℃～30℃,pH7.5～8.5.pH.:;;;NH+4-N;NH+4-N:X799.3　:A　:0250-3301(2003)03-06-0050:“”(2001BA610A-09):(1964～),,,.:2002-08-31;:2002-11-08NitrogenRemovalfromtheSewageContainingSeawaterviaNitritePath-wayYuDeshuang,PengYongzhen,SongXueqi,LiMei(SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China)Abstract:Withcontroloftheconcentrationoffreeammonia(FA),shortenednitrification-denitrificationwasaccom-plishedinSBRtoachieveenhancednitrogenremovalfromthesewagecontainingseawater.Severalparameterswhichin-cludedsalinity,temperature,pHandNH+4-Nloadwerestudiedtoevaluatetheireffects.Theresultsofexperiencesindi-catedthatshortenednitrification-denitrificationcanbeaccomplishedinsewagecontainingseawaterwithrelativelyhighsalinity.Withvarioussalinity,thenitrogenremovalefficiencyhadrelationshipwiththeNH+4-Nload,thereshouldbealowerNH+4-Nloadwhenthesalinitywashigh.Thenitrogenremovalefficiencyreachedabove90%whentheNH+4-Nloadwasnotexceed0.15kg/(kg·d).Elevationofthetemperatureavailedtohighernitrogenremovalefficiency,thisefficiencydoubledwhenthereactiontemperaturewaschangedfrom20℃to30℃.RelativelyhighvalueofpH,intherangeof7.5and8.5hadadvantagetoachieveeffectiveshortenednitrification-denitrificationwhichcausedbytheselec-tiveinhibitionoffreeammonia(FA).Keywords:wastewatercontainingseawater;freeammonia(FA);nitrification-denitrificationvianitritapathway;NH+4-Nload,nitrogenremoval　　(nitrification-denitrifica-tionvianitritepathway),、、.,[1～6].SHARON(30℃～40℃)HNO2,OLAND(1.0mg/L).,(30℃～40℃),,,.SHARONOLAND,.24320035　　　　　　ENVIRONMENTALSCIENCEVol.24,No.3May,2003DOI:10.13227/j.hjkx.2003.03.010,、()“”.,..1　1.1　1.SBR30cm,70cm,42L.,,.2SBR,1SBR,2SBR.1　SBRFig.1　TheexperimnetalequipmentofSBRprocess1.2　,CODCr300～400mg/L,NH+4-N50～120mg/L.,、,.:20℃～30℃;pH7.5～8.5;3～4mg/L;3～4.5g/L.:NH+4-N(),NO-3-N(),NO-2-N[N-(1-)-],pH(pH211,HANNA),DO、(YSIMOD-EL50B),CODCr().2　2.1　(FAb)HNO2、pH、DO、、.,pHNH+4-NHNO2FAHNO2,FA.　　pH、NH+4-NpHNH+4-NFA.NH+4-NFA(1):NH3+H2ONH+4+OH-(1)　　FApHNH+4-N,FA(2):[FA]=1714×[NH+4-N]×10pHKb/Kw+10pH(2),Kb:(25℃,1.8×10-5);Kw:(25℃,1.0×10-14).(1),pHNH+4-N,FA.FA,.FAHNO2.AnthonisenFA5～40mg/L,0.1～1.0mg/L[7].　　.2002-03-032002-04-07.:28±2℃,NH+4-N60～70mg/L.Na2CO3pH,pH8.5,FA10.88～12.7mg/L.SBR10h,0.5h,7h,1.5h,1h.2NH+4-N、NO-2-NNO-3-N.2,3NO-3-N、NO-2-N,513　　　　　　.4,(24h3d),NO-2-N25mg/L,95%(NO-2-N),NO-3-N.FA,;FA.2　FANO-2-N、NO-3-NFig.2　NitriteandnitrateconcentrationwithhighFAconcentrationintheinitial3　FANO-2-N、NO-3-NFig.3　NitriteandnitrateconcentrationwithlowFAconcentration　　(04-07～05-09),FA(5mg/L),,95%.FANO-2-N.FA,FA(FA=0.46mg/L)NO-2-N、NO-3-N.05-09～06-13,:28±2℃,NH+4-N40～52mg/L,pH=7.15±0.2.3,3,1、2NO-2-N,3NO-2-N,NO-3-N,05-30NO-2-NNO-3-N.4、5NO-3-N,NO-2-N,06-13NO-3-N17mg/L,.FA.2.2　,3.5%,(DO6mg/L),CODMn0.47～1.63mg/L.1.1　/mg·L-1Table1　Componentsofseawaterandfreshwater/mg·L-1Na+K+Ca2+Mg2+SO2-4Cl-107706.33992.34121512904.1271211.2193547.835186120　　,1SBR,2SBR.25℃～30℃,pH7.5～8.5,0%70%(Cl-1900mg/L13300mg/L),NH+4-N0.15kg/(kg·d)NH+4-N85%,NH+4-N10mg/L,4、5.4、NH+4-N、NO-2-N、NO-3-N.530%70%NH+4-NNO-2-N.5,2SBRNH+4-N,,.　　35%,30%,()10.5%.52　　　　　　244　1CODCr、NH+4-N、NO-x-NFig.4　ProfileofCODCr,NH+4-NandNO-x-NconcentrationofNo.1reactor5　230%70%CODCr、NH+4-N、NO-x-NFig.5　ProfileofCODCr,NH+4-NandNO-x-NconcentrationofNo.2reactorwithproportionof30%and70%seawater,NH+4-N.,NH+4-N(NH+4-N).630%,NH+4-N112.1mg/L、70.7mg/L、45.2mg/LNH+4-NSRT.6,NH+4-N.NH+4-NSRT,.73NH+4-N,NO-2-NSRT.,NH+4-N(112.1mg/L)NO-2-NNH+4-N(45.2mg/L)NO-2-N.NO-2-NCODCr,.6　NH+4-NNH+4-NFig.6　ProfileofNH+4-NconcentrationwithdifferentNH+4-Nfrominfluent7　NH+4-NNO-2-NFig.7　ProfileofNO-2-NconcentrationwithdifferentNH+4-Nfrominfluent8　NH+4-NNH+4-NFig.8　RelationshipbetweenNH+4-Nloadandnitrogenremovalefficiencywithvarioussalinity8NH+4-NNH+4-N.8,NH+4-N,NH+4-N.30%,NH+4-N0.15kg/(kg·d),NH+4-N85%;70%533　　　　　　,NH+4-N80%,NH+4-N0.1kg/(kg·d).NH+4-N0.15kg/(kg·d),NH+4-N.,,,,NH+4-N.9　(×10)Fig.9　Imageofactivesludgebiomasswithoutsaewater　　(CODCr)、.,,、、(9),,,.,,,70%,(10),,.,,.5%,.(N.europara,Winogradsky1892)、(N.mobilis.watsonet,Waterbury1971)、(N.occanus),,NH+4-N..,,.10　70%(×10)Fig.10　Imageofsludgebiomasswith70%seawater2.3　.,.5℃～30℃,.,20℃～30℃.230%,NH+4-N.2,20℃30℃,1.11.,NH+4-N,25℃～30℃.2　20℃、25℃、30℃NH+4-NTable2　Nitrogenremovalefficiencyandammonia-oxidizergrowthrateattemperatureof20℃,25℃and30℃/℃302520NH+4-N/mg·L-189.2585.3587.33NH+4-N/mg·L-16.1615.4127.24NH+4-N/%93.0981.9468.81/d-10.03660.01900.0113454　　　　　　2411　20℃～30℃Fig.11　Profileofammomia-oxidizergrowthrateattemperatureof20℃～30℃　　1230%,NH+4-N.12,NH+4-NNH+4-N,NH+4-N.,NH+4-N,.30℃,NH+4-N0.15kg/(kg·d);25℃,NH+4-N0.10kg/(kg·d);20℃,NH+4-N0.05kg/(kg·d).12　NH+4-NNH+4-NFig.12　RelationshipbetweenNH+4-Nloadandnitrogenremovalefficiencywithvarioustemperature　　NH+4-N,,pH、DO、C/N、.,、2,.3　(1),.FA5mg/L,20℃～30℃,(90%).FA0.5mg/L,(10%).(2)NH+4-N,90%NH+4-NNH+4-N..30%,pH7.5～8.0,NH+4-N[0.15kg/(kg·d)],NH+4-N90%.(3)NH+4-N,NH+4-NNH+4-N.NH+4-N60～80mg/L,pH7.5～8.0,30℃、25℃、20℃NH+4-N0.15、0.100.05kg/(kg·d).(