搜索
FLYASHCOMPREHENSIVEUTILIZATION 2009 NO.3粉煤灰催化铁生物耦合法处理焦化废水试验＊StudyontheTreatmentofCokingWastewaterbyFlyAshCatalyticIronandBiologicalMethod周素蕾,王红武,马鲁铭(,200092) :,,,,,CODcrNH3-N,89.64%、74.98%。CODcr、NH3-N。 :;;;CODcr; :TU528.34 :A :1005-8249(2009)03-0003-04(NationalEngineeringResearchCenterforUrbanPollutionControl,TongjiUniversity,Shanghai200092,China) Abstract:Thisarticlecarriedoutapreliminaryexperimentofusingcouplingtechnologyofflyash,catalyticironandbiologicalmethodtotreathighconcentratedcokingwastewater,theresultsshowedthatthesetechnologiescancouplewellanddeveloptheirrespectiveadvantagestore-movenondegradablebigorganicmolecules,reducethetoxicityofcokingwastewaterandraiseitsbiodegradability,andthereforecontributealottotheremovalofCODcrandNH3-N,andtheremovalrateofthecouplingtechnologytoCODcrandNH3-Ncanreach89.64%、74.98%,respective-ly.TheseprovideapossiblesolutiontotheproblemthatCODcrandNH3-Noftreatedeffluentofcokingwastewatercan'tmeetthedischargestand-ard.Keywords:flyash,catalyticiron,cokingwastewater,CODcr,nitrogenremoval＊:863(2008AA06Z310);(BA2007099);(108142):2008-11-10 、,,。,,,CODcrNH3-N。。SiO2Al2O3Fe2O3,CaO,MgONa2O。,。,、[1]。。,,,[2]。,、,COD、NH3-N。COD[3]。,,,,。1 1.1 试验流程与方法1.1.1 :→+→→→→。,500mL。400mL。4000r/min10min。。(1)+ ·3· 2009 NO.3 FLYASHCOMPREHENSIVEUTILIZATION 。,,。,400mL6.4g。,。。。,。,1h,0.5h;,12mL10ppmAl2(SO4)35min,pH7～8;0.5‰10mL,10min。(2) 24h。23.5h,;0.5h。(3) ,,,,,[5]。,3h。(4) 23.5h,0.5h。1.1.2 、CODcrNH3-N。、,,,--();,-()。1.2 试验用水及测定项目和方法,:CODcr3300～3700mg/L,NH3-N75～100mg/L,pH9.0～9.3,500～600。CODcr,;NH3-N,。1.3 试验污泥,20d。10d,。10d,,。2 2.1 系统对CODcr的去除效果CODcr,。,,CODcr。CODcr3300～3700mg/L,,CODcr1000mg/L,,CODcr400mg/L,89.64%。1 CODcr2 CODcr3 3CODcr1CODcr80%,65%。。2·4· FLYASHCOMPREHENSIVEUTILIZATION 2009 NO.3CODcr,,CODcr,40%～50%;,CODcr10%～20%;10%。,。SiO2(-Si-OH)(-Si-O-Si-)[5],,。、,、[6],、、、[7],[8],。CODcr,,CODcr[9]。,OH-Fe2+Fe(OH)2Fe(OH)3,、,CODcr[10]。33CODcr:49.86%,43.05%,37.23%。,。,,。,,,,;,Fe2+Fe3+,,,[11]。,,,,,pH,。2.2 系统对NH3-N的去除效果4,3:,355%～75%、35%～50%、30%～40%。4 35 5:,25%～30%,20%～30%,10%,5%。。,。[8],,,。。,,,,0.1μm～10μm,,[12],。,,,-[12]。·5· 2009 NO.3 FLYASHCOMPREHENSIVEUTILIZATION 、,,70%,pH。,pH。pH。2.3 pH的变化pH9.0～9.3,,Al2(SO4)3,Al2(SO4)3H2SO4pH7～8,pH。1 3pH19.02-8.82-8.9829.02-8.78-9.0439.02-8.81-9.0119.007.888.02-8.7429.007.887.86-8.8439.007.407.75-8.7819.307.207.368.758.7729.258.067.929.658.8739.308.077.999.368.6949.167.207.569.558.8013pH,,pH9.028.80(),,;,9.01,,pH。,pH7.2～8.0,pH,7.3～8.0,,pH1.0,8.8。,pH7.4～8.3,pH8。pH。pH8.5～9.6,,[4],。pH,。3 、3,CODcr,89.64%、74.98%。CODcr、NH3-N。、,NH3-N。,400mL6.4g,1h,Al2(SO4)3,NH3-N,25%～30%。,3hCODcrNH3-N,10%5%。、、,,。 [1] ,,,.[J].,2008,27(3):326～334.[2] ,,.[J].,2001,32(3):22～25.[3] ,,.COD[J].,2008,31(1):62～64.[4] ,,,.[J].,2006,32(4):56～58.[5] ,[M].,1992,21.[6] ,,.A1-A2-O[J].,2002,21(4):216～219.[7] ,,.A1-A2-O[J].,2002,22(1):34～39.[8] ,,,.·6· FLYASHCOMPREHENSIVEUTILIZATION 2009 NO.3循环流化床锅炉固硫灰与煤粉锅炉粉煤灰的比较研究＊ComparativeStudyofCFBAshesandPCAshes黄 叶,钱觉时,王 智,张志伟(,400045) :、X(CFB)(PC)、、、。,2;PC,CFBCaOSO3,。CFBPC,,。:;;;;; :TQ536.4 :A :1005-8249(2009)03-0007-04(CollegeofMaterialsScienceandEngineering,ChongqingUniversity,400045Chongqing) Abstract:Thephysicalproperties,chemicalcomposition,mineralcomposition,activityandhydrationexpansionpropertiesofthecirculat-ingfluidizedbedboiler(CFB)ashesandthepulverizedcoal(PC)asheswerestudiedbyscanningelectronmicroscopy(SEM),X-raydiffraction(XRD)andothermethods.TheresultsshowthattheCFBasheswidelydifferfromPCashes:CFBashescontainnomullite,with2timesofwaterrequirementandloosertexturethanthatofPCashes.Comparely,CFBashescontainhigherCaOandSO3.BothofthepozzolanicactivityandtheexpansionoftheCFBashesaresignificantlyhigherthanthatofthePCashes.TheCFBashespossessself-hardeningpropertywhilethePCashesdonothave.Keywords:circulatingfluidizedbedboiler(CFB)ashes,pulverizedcoal(PC)ashes,waterrequirement,texture,activity,expansion＊:(50672137):2009-01-19 ,1300～1600℃CO2H2O,,“”“”,PC[1]。850℃～900℃,CFB[2]。,、、,、、。CFBPC,。,CFB,PC,。1 1.1 原材料82,1。CFBFA,PCFA。 [J].,2001,22(4):86～90.[9] ,,./[J].,2004,20(11):55～57.[10] ,,.CASS[J].,2008,28(2):23～25.[11] ,,,.[J].,2007,26(6):1～4.[12] ,,,.[J].,1998,(4):34～37.·7·