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当前位置:首页 > 行业资料 > 冶金工业 > 低温下两段式MBBR处理城市污水的中试研究邵曙海
MBBR邵曙海, 崔崇威, 张 爱, 张 杰(哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090) : 采用两段式MBBR处理城市污水,通过改变HRT、曝气强度考察了对有机物和氮的强化去除效果。试验结果表明,在5~15℃的低温下,当HRT为7.2h、第一段的溶解氧为3~4mg/L、第二段的溶解氧为1~2mg/L时,出水COD、氨氮、总氮均能达到或接近《城镇污水处理厂污染物排放标准》(GB18918—2002)的一级A标准,且在好氧2段实现了同步硝化反硝化(SND),并可以溶解氧作为实现SND的在线控制参数;当COD/NH+4-N值4时会对硝化效果产生一定影响,这是由于优势菌群发生了变化所致。 : MBBR; 城市污水; 中试; 低温; 脱氮:X703.1 :C :1000-4602(2008)09-0093-04Pilot-scaleResearchonTreatmentofMunicipalWastewaterbyTwo-stageMBBRatLowTemperatureSHAOShu-hai, CUIChong-wei, ZHANGAi, ZHANGJie(SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China) Abstract: Thetwo-stagemovingbedbiofilmreactor(MBBR)wasusedtotreatmunicipalwastewater,andtheenhancedremovalefficiencyoforganicmattersandnitrogenwasinvestigatedbychangingHRTandaerationintensity.TheresultsshowthattheeffluentvaluesofCOD,NH+4-NandTNareequalorclosetothefirstlevelAcriteriaspecifiedinPollutantDischargeStandardforUrbanWastewaterTreatmentPlant(GB18918-2002)atlowtemperaturebetween5℃and15℃,HRTof7.2h,DOof3to4mg/Linthefirststageand1to2mg/Linthesecondstagewheresimultaneousnitri-ficationanddenitrification(SND)hasbeenachieved.DOcanactasanonlineparameterforSND.TheeffectofnitrificationcanbeaffectedwhenCOD/NH+4-Nratioislargerthan4becauseofvariationofpredominantmicroorganisms. Keywords: MBBR; municipalwastewater; pilot-scaletest; lowtemperature; nitrogenre-moval ,、。,(SND)[1]。MBBR、,,,。MBBR,MBBR,。MBBR,,SND·93·第24卷 第9期2008年5月 中国给水排水CHINAWATERWASTEWATER Vol.24No.9May2008。1 试验装置与方法1.1 1。1 Fig.1 FlowchartofMBBRprocessMBBR,。,1.5、3m3,0.6m×1.2m×2.1m1.2m×1.2m×2.1m。20mm×20mm,284m2/m3,0.98kg/m3,40%。,。1.2 COD、NH+4-N、TN、MLSS[2],JPB-607,[3]。1.3 、、。[4],,;2006108,30d,、,,20m3/d,15~20℃,DO2.5~3.5mg/L;200611,20072,(1),1DO,2DO1~2mg/L,,,5~15℃。,8:30、11:30、16:00,。1 Tab.1 Parameterofdifferentoperationconditions 12345/(m3·d-1)20202025151DO/(mg·L-1)5~63~42~33~43~4/d1920181618/℃12~159~137~106~95~82 结果与分析2.1 2.1.1 (10d)COD60~125mg/L,。118h,COD,MBBR。(26d)COD60mg/L,GB18918—2002B,COD80%。2.1.2 (13d),,,6mg/L,85%。2.2 MBBR,;MBBR,,、、,SND。[5],SNDDO2mg/L。,2DO1~2mg/L,()。2.2.1 MBBR2。1、2、5,COD50mg/L,A;3、4,CODB。13mg/L25m3/d,CODA。(70%),。20m3/d(HRT=5.4h),25.6gCOD/·94·第24卷 第9期 中国给水排水 (m2·d),8.5gCOD/(m2·d),AndreottolaG[6]MBBR[7.9gCOD/(m2·d)],。2 MBBRCODFig.2 CODremovaleffectintwo-stageMBBR,90%、85%。[7],,COD。,。2.2.2 MBBR3。3 MBBRFig.3 Removaleffectofammonianitrogenintwo-stageMBBR1、2、3、5,A;48mg/L,A,25m3/d。,1.2gNH+4-N/(m2·d),1.4gNH+4-N/(m2·d),AndreottolaG[6]MBBR[0.9gNH+4-N/(m2·d)],。,[8、9]。2.2.3 1、2、5,170%,40%;220%,50%。,1,2。[10],1,;2,。2,1COD/NH+4-N3.8,34.1,,,COD/NH+4-N4。Esoy[11]。2.2.4 44、5TN。4 MBBRTNFig.4 TNremovaleffectintwo-stageMBBR4,5TNA。1TN,13.1%20.5%;232.9%44.2%。COD∶TN∶TP=100∶5∶1,1TN12.5%19.4%,2TN0.6%0.5%。,1,2·95·邵曙海,等:低温下两段式MBBR处理城市污水的中试研究第24卷 第9期,1.76gTN/(m2·d)。,TNA[12]。3 结论① ,MBBRCOD、GB18918—2002B。② 5~15℃、HRT7.2h、3~4mg/L、1~2mg/L,COD、、A。③ COD/NH+4-N4,。④ 22mg/L,、、,SND,。:[1] ,,,.DOMBBR[J].(),2006,34(4):514-517.[2] .(4)[M].:,2002.[3] ,,.、[J].,1999,32(6):39-43.[4] ,,,.[J].,2005,24(4):92-96.[5] HolmanJB,WarehamDG.COD,ammoniaanddis-solvedoxygentimeprofilesinthesimultaneousnitrifica-tiondenitrificationprocess[J].BiochemEng,2005,22(1):125-133.[6] AndreottolaG,FoladoriP,RagazziM.Upgradingofasmallwastewatertreatmentplantinacoldclimateregionusingamovingbedbiofilmreactor(MBBR)system[J].WaterSciTechnol,2000,41(1):177-185.[7] ,.MBBR[J].,2006,5(1):54-56.[8] RustenB,HemL,degardH.Nitrificationofmunicipalwastewaterinmoving-bedbiofilmreactors[J].WaterEnvironRes,1995,67(1):75-78.[9] RustenB,HemL,degardH.Nitrogenremovalfromdi-lutewastewaterincoldclimateusingmovingbedreactors[J].WaterEnvironRes,1995,67(1):65-74.[10] .(4)[M].:,2002.[11] EsoyA,degardH,BentzenG.Effectofsulfideandor-ganicmatteronthenitrificationactivityinabiofilmprocess[J].WaterSciTechnol,1998,37(1):115-122.[12] PriyaliSen,StevenKDentel.Simultaneousnitrification-denitrificationinafluidizedbedreactor[J].WaterSciTechnol,1998,38(1):247-254.:(0451)89593991E-mail:cuichongwei1991@126.com:2007-12-14(上接第92页);1%CaCl22.0mL/100mL;pH7.0~8.0。③ ,COD20%,96%,,。:[1] .[J].,2002,25(1):43-45.[2] ,,.[J].,2005,28(1):12-15.[3] ,,.[J].,2005,21(12):56-58.[4] .[M].:,1978.[5] ,.[M].:,2000.:(0731)5591644E-mail:chengrui524@163.com:2007-12-20·96·第24卷 第9期 中国给水排水
本文标题:低温下两段式MBBR处理城市污水的中试研究邵曙海
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