高盐高氮榨菜废水生物脱氮试验研究周健

　,,,.[J].,2005,25(12):1636-1640ZHOUJian,ZENGChaoyin,LONGTengrui,etal.Studyonbiologicalnitrogenremovalinmustardtuberwastewaterwithhighsalinityandhighnitrogenconcentration[J].ActaScientiaeCircumstantiae,2005,25(12):1636-1640周　健1,＊,曾朝银1,龙腾锐1,黄厚富21.重庆大学三峡库区生态环境教育部重点实验室,重庆　4000452.浙江工业大学建筑设计研究院,杭州　310014:2005-06-07　　　:2005-08-23　　　:2005-09-01:,、、DO、pHSBBR.,SBBR,,;,、、DO、pH;1.0kg·m-3·d-1、0.15kg·m-3·d-1、DO5mg·L-1、pH720℃,(NaCl)2%、CODCr3500mg·L-1,TN530mg·L-1,NH+4-N150mg·L-1,CODCr80mg·L-1、NH+4-N3mg·L-1、TN16mg·L-1,NH+4-NTN98%96%。:;;;:0253-2468(2005)12-1636-05　　:X703　　:AStudyonbiologicalnitrogenremovalinmustardtuberwastewaterwithhighsalinityandhighnitrogenconcentrationZHOUJian1,＊,ZENGChaoyin1,LONGTengrui1,HUANGHoufu21.KeyLaboratoryoftheThreeGorgesReservoirRegionsEco-Environment,MinistryofEducation,ChongqingUniversity,Chongqing4000452.TheArchitecturalDesign&ResearchInstituteZhejiangUniversityofTechnology,Hangzhou310014Received7July2005;　receivedinrevisedform23August2005;　accepted1September2005Abstract:Aimingatthehighsalinityandhighnitrogenofthewastewaterproducedinthemanufacturingprocessofmustardtuber,theinfluenceofthefactorssuchasorganicloadingrate(OLR),nitrogenloadingrate(NLR),DOandpHontheeffectofthenitrogenremovalofSBBRreactorintheconditionofhighsalinitywasstudied.TheresultsshowedthatifthehalophilicbacteriaselectedfrommustardtuberwastewaterwereinoculatedintheSBBRreactor,thereactorcouldgetabetteradaptabilitytothehighsalinity.Andbytheobservationofmicroscope,itwasfoundthattherewereagreatmanyoffilamentousorganismsproliferatingonthebiologicalfilm.Thereactorshadrelativelystrongsimultaneousnitrificationanddenitrificationcapacity,theinfluencesofOLR,NLR,DOandpHonthenitrogenremovalweresignificant.AndtheoperatingconditionswereOLR≤1.0kg·m-3·d-1,NLR≤0.15kg·m-3·d-1,DO≥5mg·L-1,pH≥7,T≥20℃.Underthiscondition,iftheinfluentsalinityofthewastewater(asNaCl)was2%,COD=3500mg·L-1,TN=530mg·L-1,NH+4-N=150mg·L-1,andtheeffluentqualitywillbeCOD80mg·L-1,TN16mg·L-1,NH+4-N3mg·L-1.NH+4-NandTNremovalsrateswere98%and96%respectively.Keywords:mustardtuberwastewater;salinitywastewater;biologicalnitrogenremoval;simultaneousnitrificationanddenitrification(SND):(No.7986):　(1964—),,(),E-mail:[e-mail],Tel:[phone];＊()Foundationitem:TheitemofscientificcommitteeofChongqing(No.7986)Biography:ZHOUJian(1964—),female,Associateprofessor(Ph.D.),E-mail:[e-mail],Tel:[phone];＊Correspondingauthor　　、,,,N、P。,,.Campos(2002)3%(NaCl),;GuanghaoChen(2003)6.5g·L-1;Dincer(2001)12d2512200512　　　　　ActaScientiaeCircumstantiaeVol.25,No.12Dec.,2005DOI:10.13671/j.hjkxxb.2005.12.0123%25d;(2003),10.5%(0.38%),.Nugul(1999)SBR,0.03%～0.2%(NaCl).,,,,.,350×104t,,.,SBBR(sequencebiofilmbatchreactor),,(OLR)、(NLR)、DO、pH,,.1　(Materialsandmethods)1.1　试验装置SBBR,14L,,30%,,1.“----”.1　(1.;2.;3.;4.DO;5.pH;6.DO;7.pH;8.;9.;10.)Fig.1　Schematicdiagramofexperimentalequipment(1.airpump;2.airdiffuser;3.fibrouscarrierpackage;4.DOprobes;5.pHprobes;6.DOcontroller;7.pHcontroller;8.temperaturecontroller;9.calefactiondevice;10.timecontroller)1.2　试验水质,1.1　Table1　Qualityofinfluentwastewater(NaCl)CODCr(mg·L-1)BOD5(mg·L-1)NH+4-N(mg·L-1)TN(mg·L-1)PO3-4-P(mg·L-1)pH2.0%～2.5%3500±3001400±100150±10500±3020±56.5±0.51.3　试验方法1.3.1　启动阶段,,,,1.0kg·m-3·d-1,DO5mg·L-1,20℃,45d;0.2h,11h,0.4h,60,,.1.3.2　负荷对榨菜废水脱氮的影响研究4,,0.5,1.0,1.5,2.0kg·m-3·d-1,0.08,0.15,0.24,0.30kg·m-3·d-1,.1.3.3　DO对榨菜废水脱氮的影响研究4,DO3,4,5,6mg·L-1,1.0kg·m-3·d-1,.1.3.4　进水pH对榨菜废水脱氮的影响研究pH4,pH6.5±0.5,,pH,pH,pH.4,1%H2SO4NaOH,pH4,5,6,7,1.0kg·m-3·d-1,DO5mg·L-1,.2　(Results)2.1　负荷对榨菜废水脱氮的影响、22.2,0.5～2.0kg·m-3·d-1,97.34%～97.83%,NH+4-N163712　:　　2　Table2　EffectofOLRoneffluentqualityandremovalrates(kg·m-3·d-1)COD(mg·L-1)CODNH+4-N(mg·L-1)NH+4-NTN(mg·L-1)TN0.57697.83%1.299.2%19.6396.3%1.08097.71%3.098%16.4696.9%1.58597.57%30.080%101.4880.9%2.09397.34%70.852.8%191.2863.9%2　Fig.2　EffectofNLRonnitrificationratesanddenitrificationrates52.8%～99.2%,TN63.9%～96.9%.1.0kg·m-3·d-1,0.15kg·m-3·d-1,11h,NH+4-N、TN;1.5kg·m-3·d-1,0.24kg·m-3·d-1,NH+4-N、TN,.2,2,,NH+4-N,NH+4-N,TN,TN.:,1.75g·m-3·h-15.1g·m-3·h-1,0.15kg·m-3·d-1,15g·m-3·h-1,0.30kg·m-3·d-1,9.75g·m-3·h-1.2.2　DO对榨菜废水脱氮的影响DO33.3DONH+4-NTN,11h,DO3mg·L-14mg·L-1,NH+4-N97～20mg·L-1,　　3　DOTable3　EffectofDOoneffluentnitrogenandremovalratesDO(mg·L-1)NH+4-N(mg·L-1)NH+4-NTN(mg·L-1)TN397.535.0%366.1030.9%420.186.6%95.1382.05%50.699.6%16.4092.8%60.999.4%28.0294.7%3　DOFig.3　EffectofDOonnitrificationratesanddenitrificationratesTN366～95mg·L-1,NH+4-N35%～86%,TN31%～82%,;DO5mg·L-16mg·L-1,NH+4-N0.6～0.9mg·L-1,TN16～28mg·L-1,TN97%～95%,.4,DO,DO3mg·L-15mg·L-1,0.65g·m-3·h-12.91g·m-3·h-1,7.51g·m-3·h-110.68g·m-3·h-1.2.3　进水pH对榨菜废水脱氮的影响pH44、5.4pH,4,pH7,NH+4-N、TN;pH6,NH+4-N,TN111.8mg·L-1,TN76%.pH45,NH+4-N、TN.4pH,4,1.5h,pH8,pH7.5.5,pH,5,pH,1.35μg·g-1·h-12.70μg·g-1·h-1.pH7.1638　　　　　　　　　　254　pHTable4　EffectofpHoneffluentnitrogenandremovalratespHNH+4-N(mg·L-1)NH+4-NTN(mg·L-1)TN472.052.0%196.0563.01%529.480.4%155.5270.66%63.997.4%111.8278.90%70.499.7%19.6496.30%4　pHFig.4　ThecurveofpHchangesineveryreactor5　pHFig.5　EffectofinfluentpHonTTC-Dehydrogenaseactiv