短程硝化反硝化新型生物反应器的特性研究宋英豪

短程硝化反硝化新型生物反应器的特性研究＊宋英豪1,3　杨莎莎2,4　赵宗升2　贾立敏1(1.,100037;2.,100044;3.,100083;4.,100082)　利用气提式反应器研究硝化过程中的亚硝酸积累现象,并在运行6个月后将其与一升流式污泥床反应器相连接,研究硝化反硝化联合工艺的处理效果。结果表明,在硝化部分,当进水氨氮浓度98mgL,游离氨(FA)为1.07mgL时,亚硝态氮浓度开始逐渐上升,亚硝化率(NO-2-NNO-X-N)50%。实验条件下氨氮污泥负荷为0.53kg(kg·d)时,氨氮去除率较高且亚硝化率最大,但当污泥负荷达到0.85kg(kg·d)时,氨氮去除率降低。升流式污泥床反应器中形成明显的颗粒污泥,在碳源充足的条件下(即CN3),最终出水效果显著提高。　气提式反应器　短程硝化反硝化　升流式污泥床反应器　颗粒污泥　　　　　　　　＊(20577003);“863”(2006AA06Z320)。0　　　[1],、、、[2]。。(FA)[3]、pH[4]、[5](DO)[6],,。,,(USB),。1　1.1　短程硝化反硝化新型生物反应器组成1.1.1　———(125cm,2L)。,,,。,;,;,。,,,,。14,,,。,。,。1.1.2　———USBUSB(120cm,2L)UASB,,,。,,HRT,。,,,SS。,。USB,。(20±5)℃。HRT,。1。1　76　　　20088264DOI:10.13205/j.hjgc.2008.04.0081.2　实验方法,NH4ClNa2CO3,KH2PO4,NP(10～20)∶1,m(Na2CO3)∶m(NH+4-N)=7～8,Na2CO3,pH。,,,,SV32%;USB6。2　2.1　气提式反应器启动阶段2。,MLSS1800mgL,30mgL,45mgL,HRT6.7h。50d,20d100%,ρ(NO-3-N)ρ(NO-x-N)91%～99%,,(DO4mgL),。23～33,,(70%),NO-3-N,,MLSS1880mgL,,。40,。59,,DO2mgL,,。Anthonisen[7],0.1～1.0mgL,10～150mgL,。1—NO-2-N;2—NO-3-N;3—NH+4-N;4—NH+4-N。2　7698mgL,,50%,20℃,pH8.2,FA1.07mgL。92168mgL,28d186mgL,67%,85%。2.2　气提式反应器稳定运行阶段,。3,162189253、308mgL,NO-2-N222、258mgL,87%88%,98%96%,0.52、0.54kg(kg·d)(1.1、1.3kg(m3·d)),,16d,79%。206HRT4.9h,。1—NO-2-N;2—NO-3-N;3—NH+4-N;4—NH+4-N;5—;6—。3　250NH+4-N415mgL,0.85kg(kg·d)(2.2kg(m3·d),31%,FA,,80%。DOHRT5.5h,。274NH+4-N,DO,,77%,,,。,。2.3　硝化-反硝化反应器串联运行阶段180USB,,,,(),,HRT4h,,CN=1.95。4,NO-2-N77　　　2008826470%,NO-3-N90%,NH+4-N50%,206CN3,NO-2-N,99%,NH+4-N80%。1—NO-2-N;2—NO-2-N;3—NO-3-N;4—NO-3-N;5—NH+4-N;6—NH+4-N。4　-USB、220d,,、,,1～6mm。,,,,,CaCO3,,。EDS(X-),CaCO3。3　(1)98mgL,FA1.07mgL,50%。0.53kg(kg·d),1.2kg(m3·d),,88%,　　　96%。0.85kg(kg·d),2.2kg(m3·d),。(2),,CN3,。(3)。[1]　,,..:,2004:115-116[2]　VoetJP.Removalofnitrogenfromhighlynitrogenouswastewater.JWPCF,1975,47:394-398[3]　SurmaczGJ,CichonA,MikschK.Nitrogenremovalfromwastewaterwithhighammonianitrogenconcentrationviashorteranitrificationanddenitrification.Wat.Sci.Tech.,1997,36(10):73-78[4]　VillaverdeS,Garcia-EncinaPA,Fdz-PolancoF.InfluenceofpHovernitrifyingbio-filmactivityinsubmergedbiofilers.Wat.Res.,1997,31(5):1180-1186[5]　HellingaC,SchellenAAJC,MulderJW,etal.TheSHARONprocess:aninnovativemethodfornitrogenremovalfromammonia-richwastewater.Wat.Sci.Tech.,1998,37(9):135-142[6]　MǜnchEV,LantP,KellerJ.Simultaneousnitrificationanddenitrificationinbench-scalesequencingbatchreactors.Wat.Res.,1996,30(2):277-284[7]　AnthonisenAC,LoehrRC,PrakasamTBS,etal.Inhibitionofnitrificationofammoniaandnitrousacid.JournalofWaterPollutionControlFed,1976,48(5):835-852　　100037　57　E-mail　[e-mail]2007-10-29塑料袋有了环保标准《》61,,、《、》、《》、《》3。30.025mm,,“,”。:,、,,、。:,15%。,,、、,。,61。摘自“中国环境报”78　　　20088264Abstract　Combiningwiththeexistingsmeltingconditions,itwascarriedoutthatchecksonrelevantparametersoftheprimarydedustingsystemsfortheconvertersofPanzhihuaIronandSteelGroupCompany;itwasalsoanalyzedtheexistingproblemsofthesystemsaccordingtotheparametersoftheoriginaldesign.Themeasuresforimprovingthededustingsystemswereproposedandimplemented,afterwhichthededustingsystemscouldmeetthedemandsontreatingpollution.Keywords　converter　dedust　fluegas　venturitube　throatTHECHARACTERISTICSANDMEASUREMENTOFNOISEFROMPIPELINEOFPIPEGALLE-RYOXYGENAREASINLARGEIRONANDSTEELPLANTSYuWuzhou　ZengHuaxiu　LiMinnaetal(68)………………………………………………………………………………………………………………………………Abstract　Portablesoundinsulationnoise-abatementtubemethodispresentedtomakeefficientpipenoisemeasurementandidentificationofpipelinesofpipegalleryinoxygenareaforalargeiron&steelplant,andthecharacteristicsofpipenoiseareanalyzed.Theresultsshowthatthismethodiseffectiveandreliable.What'smore,pipenoisechangesalongpipelengthduetotheeffectofvalvesandbendings,anddifferentpipesemitnoisewithdifferentlevelsandspectralcharacteristics.Itissuggestedinthispaperthatproperpipelaggingstructuresshouldbeappliedtopipegallerywithdifferentpipelinesaccordingtotheirnoisecontributions.Keywords　noisemeasurement　pipenoiseIMPROVEMENTONDECOLORIZATIONPROCESSOFACTIVATEDCHARZhangMengcun(71)…………………………………………………………………………………………………………………………………………Abstract　Accordingtotheproblemsofthetraditionaldecolorizationprocessofactivatedchar,theircauseswereanalyzedandafeederofventuritubewasdeveloped,whichfundamentallysolvedthepollutionofaddingactivatedcharcoal,thebumpandthefusionspeed.Thedecoloriza-tiontimewasdecreasedandtheproductionefficiencywasalsoraised.Keywords　activatedcharcoal　decolorization　venturitube　feederPILOT-SCALETESTONNITROTOLUENEWASTEWATERTREATMENTWITHMICRO-ELEC-TROLYSISANDI-BAFYeZhengfang　WangZhongyou　MouJinghaietal(73)……………………………………Abstract　Pilotscaletestwasmadeonthetreatmentofnitrotoluenewastewaterbyusingmicro-electrolysisandimmobilizedmicroorganism-biologicalaeratedfilter(I-BAF)process.Theresultsindicatethattheprocesshashighefficiencyandlowcost(0.23Yuantwastewater)andital-sohascharacteristicsofsteadyrunningandpowerfulresistancetoimpactload.Whentotalhydraulicretentiontimeis28h,theremovalratesofni-trotoluene(MNT,DNTandTNT),anilineandCODare99%,85.1%and72.8%,respectively.Keywords　immobilizedmicroorganisms　biologicalaeratedfilter　micro-electrolysis　nitrotoluenewastewaterCHARACTERISTICSTU