NaCl盐度对耐盐活性污泥沉降性能及脱氮的影响赵凯峰

4　3环境工程学报Vol.4,No.320103ChineseJournalofEnvironmentalEngineeringMar.2010NaCl赵凯峰　王淑莹＊　叶　柳　彭永臻　唐　冰(,100124)　　,(SBR),。,。10g/L,(SVI),,。,,。,。10g/L0、5、15、20g/L,99%。,(NOB)(AOB),。　　　　　X703.1　　　A　　　1673-9108(2010)03-0570-05Effectsofsalinityonsalt-tolerantactivatedsludgesettlingperformanceandnitrogenremovalZhaoKaifeng　WangShuying　YeLiu　PengYongzhen　TangBing(KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentRecoveryEngineering,BeijingUniversityofTechnology,Beijing100124,China)Abstract　Aimingatapplyingprojectofflushinglavatorybyseawater,effectsofsalinityonsalt-tolerantac-tivatedsludgesettlingperformanceandnitrogenremovalwerestudiedtotreatsalinesewageusingsequencingbatchreactor(SBR).Theresultsshowedthatfilamentousbulkingwasobservedinthesalt-tolerantsludge.Afteralong-timedomesticationunder10g/Lsalinity,SVIreducedwiththeincreasingsalinity,duetodecreasedquantityoffilamentousbacteria.Increasedsaltalsomadetheflocsdiminishanddense.However,decreasingsa-linityledtothebulkingandthelossofsludge.Theexperimentalresultsdemonstratedthatthetoleranceofnitrifi-erstosalinityenhanced.Whenthesalinitywaschangedinto0,5,15,20g/Lfrom10g/L,ammoniaremovalef-ficiencycouldalsobekeptabove99%.Nitriteaccumulationrateincreasedwhateverthesalinityreducedorin-creased,indicatingthatnitriteoxidationbacteria(NOB)hadstrongertolerancetosaltchangethanammoniaoxi-dationbacteria(AOB).Increaseordecreaseinsalinitycouldinhibitthenitrifiers.Keywords　salinity;settleability;biologicalnitrogenremoval;salt-tolerantactivatedsludge:(PHR20090502);(PXM2008-014204-050843);:2009-03-16;:2009-04-20:(1984～),,,。E-mail:[e-mail]＊,E-mail:[e-mail]　　,[1,2]。,NaCl,NaCl[3～6]。[7],,,,。Tokuz[8],,。,,3:NaCl。,。1　1.1　。。1,。,,。1　Table1　CharacteristicsofdomesticsewagepHCOD(mg/L)PO34-P(mg/L)NH+4-N(mg/L)NO-2-N(mg/L)NO-3-N(mg/L)7.4～7.9190～3003.6～8.235.7～64.20.05～0.250.34～0.967.65±0.35245±775.9±3.349.7±20.20.15±0.140.65±0.44　　COD(HJ132-2003);NO-2-NN-(1-)-,NO-3-N,NH+4-N,752;MLSS,pHpH(WTW340i,),DO(WTWMulti340,)。(NAR):NAR=NO-2-NNO-2-N+NO-3-N×100%(1)(SDR):　　SDR=NO-x-N(produced)-NO-x-N(residual)MLVSS×t(2)NO-x-N(produced)NO-x-N(residual)(NO-2-NNO-3-N),t,MLVSS。1.2　412LSBR,MUCT(ModifiedUniversityofCapeTown)10g/L2。4SBR////0.17h/6h/3h/1.5h/0.33h,22℃,3g/L,。10g/L,0、5、1520g/L。2　2.1　MUCT2,,3.75mg/L1mg/L。SVI200,。281.9,2。[9],、,。,10g/L,。1。,,1　MUCTFig.1　MicroscopeofsludgebeforeandafterbulkinginMUCTprocess5714;,。,。,。2　MUCTTable2　ComparisonofsludgebeforeandafterbulkinginMUCTprocessO2(mg/L)(NTU)(NTU)SVMLSS(g/L)SVI(mL/g)3.5～4(3.75)37～45(41)25～31(28)360.4900.5～1.5(1)38～50(44)1.2～2.6(1.9)880.44200　　:210g/L0、5、1520g/L41。,0g/L5g/L,。。15g/L20g/L,。。:,,、,,,,,,,,,[10]。,,,,。30、5、1520g/LSVI,,,SVI;,SVI。,0g/LSVI350mL/g,5g/LSVI250mL/g,15g/L20g/LSVI150mL/g。。,。,,SVI。,,,[11],,,。,,。10g/L,5723:NaCl。,SVI,,SVI。,,;,,。2.2　,SBR,COD80%,,25,6h。8,,。40、5、10、1520g/L,15,6h,,0～20g/L,AOB,99%。5g/L15g/L,,70%65%。0g/L20g/L,,,94%95%。0g/L20g/L,,AOBNOB,NOBAOB,NOB,,。,AOB,,NOB,。4　0、5、10、1520g/LFig.4　Ammoniaremovalefficiencyandnitriteaccumulationratioinsystemswithsalinityof0,5,10,15and20g/L2.3　50、5、10、1520g/L,15,5g/L15g/L4.7mgN/(gMLVSS·h)4.4mgN/(gMLVSS·h)。0g/L20g/L,5.8mgN/(gMLVSS·h)5.6mgN/(gMLVSS·h)。Panswad[12],,。,5g/L15g/L,,。,,,。0g/L20g/L,,,。5　0、5、10、1520g/LFig.5　Specificdenitrificationrateinsystemswithsalinityof0,5,10,15and20g/L3　　(1),SVI,。10g/L,,,SVI,,SVI。(2)AOB。AOB,。,NOB,5734。(3),,,,。[1],,,..,1999,19(5):17～18[2],,,..,1999,15(9):4～6[3],,,..,1999,20(3):104～106[4]KincannonD.F.,GaudyA.F.Someeffectsofhighsaltconcentrationonactivatedsludge.WPCF.,1966,38(7):1148～1159[5],,,..,2000,16(2):18～19[6]DoudoroffM.ExperimentsontheadaptationofE.colitoNaCl.Gen.Physiol.,1940,23(5):585～611[7],,,..,2003,21(5):7～9[8]TokuzR.Y.,EckenfelderW.W.Theeffectofinorganicsaltsontheactivatedsludgeprocessperformance.Wat.Res.,1979,13:99～104[9],,..,1998,17(9):8～10[10],,,.NaCl.,2004,22(1):19～35[11]UygurA.,KargiF.Saltinhibitiononbiologicalnutrientremovalfromsalinewastewaterinasequencingbatchre-actor.Enzyme.Micro.Technol.,2004,34(3～4):313～318[12]PanswadT.,ChadarutA.Impactofhighchloridewastewateronananaerobic/anoxic/aerobicprocesswithandwithoutinoculationofchlorideacclimatedseeds.Wat.Res.,1999,33(5):1165～1172574