Highsludge工艺中氮的沿程变化与同步脱氮研究何俊

Highsludge·何　俊1,　张永丽1,　周克钊2,　周建忠2,　程　鹏2(1.四川大学建筑与环境学院,四川成都610065;2.中国市政工程西南设计研究院,四川成都610081)　　　:　采用Highsludge·工艺处理城市污水,考察了氮的沿程变化与同步脱氮情况。结果表明,在第二好氧池中只发生了硝化作用,总氮无明显的下降;而在第一好氧池中总氮有明显的下降,去除率在16.8%～62.3%变化,平均去除率为33.19%,表明在该池中发生了明显的同步脱氮反应。该工艺的除污效果良好,对COD、BOD5、TN、NH+4-N的去除率分别为95%、96%、84%和82%,且污泥沉降性能良好,并未因污泥浓度高而发生丝状菌污泥膨胀、沉淀池污泥上浮等现象。　　:　Highsluge·工艺;　同步硝化反硝化;　污泥沉降性能:X703　　:C　　:1000-4602(2009)13-0038-03TransformationofNitrogenandSimultaneousNitrificationandDenitrificationinHighsludge·ProcessHEJun1,　ZHANGYong-li1,　ZHOUKe-zhao2,　ZHOUJian-zhong2,　CHENGPeng2(1.CollegeofArchitectureandEnvironment,SichuanUniversity,Chengdu610065,China;2.SouthwestMunicipalEngineeringDesignandResearchInstituteofChina,Chengdu610081,China)　　Abstract:　Highsludge·processwasusedtotreatmunicipalsewage,andthenitrogenchangeandthesimultaneousnitrificationanddenitrification(SND)wereinvestigated.Thenitrificationoccursonlyinthesecondaerobictank,andthetotalnitrogenisnotsignificantlydecreased.Inthefirstaerobictank,thetotalnitrogenissignificantlydecreased,anditsremovalratevariesfrom16.8%to62.3%withanaverageof33.19%,showinganobviousSNDphenomenon.Theprocesshasgoodpollutantremovaleffi-ciency.TheremovalratesofCOD,BOD5,TNandammonianitrogenare95%,96%,84%and82%respectively.Thesludgesettleabilityisgood,andthesludgebulkingandfloatationdonothappen.　　Keywords:　Highsludge·process;　simultaneousnitrificationanddenitrification;　sludgesettle-ability　　Highsludge·,,、MLE,[1]。,。1　试验材料和方法1.1　,9.74m3/h。,COD356～931mg/L,40.05～60.50mg/L,23.22～36.01mg/L,pH7.46～7.90,SS·38·第25卷　第13期2009年7月　　　　　　　　　　　　中国给水排水CHINAWATERWASTEWATER　　　　　　　　　　　　　Vol.25No.13Jul.2009226～1400mg/L。1.2　(1),A2/O,A/O;(O1O2);××9.03m×3m×3.5m,0.75,3.0m,81.27m3。1　Fig.1　Schematicdiagramofexperimentalset-up1.3　8:00—20:00(1/h),BOD5、COD、SSpH;TN、NH+4-N、NO-3-NNO-2-N。BOD5;COD;TN;NH+4-N;NO-3-N;NO-2-NN-(1-)-;DO;pH。2　结果和讨论2.1　23.22～36.01mg/L,,A14.97～7.51mg/L。,,0.05～1.96mg/L。0～2.5mg/L,,A121%～100%(50%),A20～77%(32%)。,O21.90～7.35mg/L。,,。2。2　Fig.2　VariationofnitrogenalongprocessintypicalperiodA1TNNO-3-N3.4、2.0mg/L,A21.3mg/L,。2,A1A2,A1NO-3-NA2。O1、NH+4-N3、2.3mg/L,NO-3-N1mg/L。,O1,。,TN、NO-3-N,。TNNH+4-N、NO-3-N、NO-2-N,NH+4-N。O2;NH+4-N3.6mg/L0.4mg/L,3.2mg/L;NO-3-N1.7mg/L4.8mg/L,3.1mg/L。NO-3-N,O2,O1。2.2　2.2.1　SNDSND,,。,·39·何　俊,等:Highsludge·工艺中氮的沿程变化与同步脱氮研究第25卷　第13期DO、C/NSND[2～5]。,SNDDO1mg/L。,A1、A2、O1、O2DO(0.12～0.27)、(0.10～0.17)、(0.29～1.14)、(1.07～2.36)mg/L。C/N(),C/N,COD/N6.15～23.25(10.51),BOD5/N1.84～8.10(3.83)。2.2.2　,()(38.06～59.74mg/L);,(10.60～16.98mg/L);5.18～14.17mg/L,A1NO-3-N,A2。O1,。O1TN()16.8%～62.3%(33.19%)。DO,O2SND,,。2.3　,、、。8.5g/L,。,,,SVI80～95mL/g,、;,。2.4　,,COD、BOD5、、(15～21)、(2～6)、(4～7)、(0～5)mg/L,95%、96%、84%82%。,6mg/L、1mg/L。3　结论Highsluge·,O1SND,。,。:[1]　,,,.Highsludge·[J].,2009,25(3):1-6.[2]　MǜnchEV,LantPaul,KellerJǜrg.Simultaneousnitrifi-cationanddenitrificationinbench-scalesequencingbatchreactors[J].WaterRes,1996,30(2):277-284.[3]　PochanaK,KellerJ.Studyoffactorsaffectingsimultane-ousnitrificationanddenitrification(SND)[J].WaterSciTechnol,1999,39(6):61-68.[4]　ChiuaYing-Chih,LeeLi-Ling,ChangCheng-Nan,etal.Controlofcarbonandammoniumratioforsimultaneousnitrificationanddenitrificationinasequencingbatchbio-reactor[J].IntBiodeteriorBiodegrad,2006,59(1):1-7.[5]　YooHyungseok,AhnKyu-Hong,LeeHyung-Jib,etal.Nitrogenremovalfromsyntheticwastewaterbysimultane-ousnitrificationanddenitrification(SND)vianitriteinanintermittently-aeratedreactor[J].WaterRes,1999,33(1):145-154.:13808204510E-mail:[e-mail]:2009-01-10·40·第25卷　第13期　　　　　　　　　　　　　　中国给水排水