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当前位置:首页 > 商业/管理/HR > 企业文化 > 化学方法深度处理焦化废水的研究刘红
:1002-1124(2006)08-0041-04 化学方法深度处理焦化废水的研究刘 红,邵 俊,孙德锋,方月梅(,430081) :-,(PASC),,pH、n(Al)/n(Si)、、,:pH6~8,PASCn(Al)/n(Si)=2,200mg·L-1(Al3+);20g·L-1,1h。COD1112.8mg·L-1110.6mg·L-1,pH7,。:;;;COD:X703.1 :AStudyontheadvancedtreatmentofcoking-plantwastewaterbychemicalmethodLIUHong,SHAOJun,SUNDe-feng,FANGYue-mei(CollegeofChemicalEngineering&ResourcesandEnvironment,WuhanUniversityofScienceandTechnology,Wuhan430081,China) Abstract:Theflocculation-adsorptiontechnicwasusedintheadvancedtreatmentofcoking-plantwastewa-ter.Polyaluminumsilicatechloride(PASC)waschosenasflocculationandfurnaceslagassorbent.TheinfluenceofpHvalueofwastewater,molarratioofAltoSi,theaddingamountofflocculantandfurnaceslag,andadsorptiontimewereinvestigatedintreatingcoking-plantwastewater.TheoptimumconditionisthattheappropriatepHvalueisfrom6to8,thebestratioofAltoSiis2:1,theaddingamountofPASCis200mg·L-1bycalculatingtheconcentrationofAl3+,theaddingamountoffurnaceslagis20g·L-1,andtheadsorptiontimeisonehour.Aftertreatment,theCODofthewastewa-terfellfrom1112.8mg·L-1to110.6mg·L-1,andthepHvaluewasabout7,thenthewaterwaseligibletodrain.Keywords:coking-plantwastewater;polyaluminumsilicatechloride;furnaceslag;COD 、,,,:2006-04-17:(1964-),,,1989,。、,。,,COD,,。 [1] GrossmannIE.Challengesinthenewmillennium:Productdiscoveryanddesign,enterpriseandsupplychainoptimization,globallifecycleassessment,TheProceedingsofthe8thInternationalSymposiumonPSE[C].Elsevier,2003,28-48.[2] .[J].,2001,1(1):10-15.[3] ,.[J].,2004,23(1):17-23.[4] BurgessA,Applicationoflifecycleassessmenttochemicalprocess[J].ChemicalEngineeringScience,2001,56(8):2589-2604.[5] BagajewiczM.Areviewofrecentdesignproceduresforwaternetworksinrefineriesandprocessplants[J].ComputersandChemicalEngi-neering,2000,24(9):2093-2114.[6] Kinoshita,E.ProposalofnewAHPmodelinlightofdominantrelationshipamongalternatives[J].JournalofTheOperationsResearchSocietyofJapan,1999,42(2):180-197.Sum131No.8 化学工程师Chemical Engineer 20068DOI:10.16247/j.cnki.23-1171/tq.2006.08.015,()、[1,2],,,,,。COD,,,,、,,。1 1.1 DBJ-623,pHS-25,UV-754。H2SO4、AlCl3;(3.2,w(SiO2)=28%)1.2 (PASC)6.4%(SiO2),2.3%H2SO4,SiO23.2%,3~4h,()。0.5mol·L-1AlCl3,n(Al)/n(Si)0.25,0.5,1,2,4,pH1.8~2。1.3 ,,150,COD1112.8mg·L-1,220,pH7.4。1.4 1.4.1 200mL250mL,(150r·min-1)PASC(Al3+),1min(60r·min-1)3min,30minCOD、。COD,。1.4.2 200mL250mL,150r·min-1,,,(50r·min-1)1h,,1h,COD。2 2.1 ,,,。,,,COD,,,,,“”,,PASC。2.2 ,,,COD300mg·L-1,。,,。,60、、,,,COD88%,,;,,。,。、、[3],,,,,。,[4,5],,,Autosorb-1-MPApparatus24400cm2·g-1,1。1 (%)SiO2Al2O3Fe2O3CaOMgOTiO2K2OⅡ()56.6521.325.454.461.190.821.238.26 1,8.26%,,,,,。,:(1) CaO、MgO、Fe2O3、K2O,,[3],pH2~35,,pH6~9。42刘 红等:化学方法深度处理焦化废水的研究 20068(2) ,1~4h,2.68mg·L-15.70mg·L-1,,,[3]。2.3 ,,,PASC200mg·L-1(Al3+)、10g·L-1,1h(1min),1hCOD,2。2 COD5minCOD/mg·L-1172.8226.8194.4117.0 2,,COD117.0mg·L-1,。,,,,。,,,,,。,:PASC,,,,pH6~9。3 3.1 3.1.1 pH n(Al)/n(Si)1、2、4PASC,230mg·L-1(Al3+),pH,pH。1。1 pH1,pH,pH,COD,pH6.0~8.5,。PASCAl3+,pH5.0~6.5,Al(OH)2+、Al8(OH)204+Al(OH)3[6];pH7.0~8.5Al(OH)3,、。pH9.0,Al(OH)4-,。pH7.5,pH,,。3.1.2 n(Al)/n(Si) Al3+230mg·L-1,,,COD。2。n(Al)/n(Si)2 n(Al)/n(Si)2,n(Al)/n(Si),,n(Al)/n(Si)=2。,[7]。n(Al)/n(Si),PASC,,Al3+,,,;n(Al)/n(Si),,PASC,。3.1.3 PASC n(Al)/n(Si)=2∶1,pH,PASC,3。PASC/mg·L-13 PASC4320068 刘 红等:化学方法深度处理焦化废水的研究3,,COD,PASC200mg·L-1,69.8%,,10。PASC280mg·L-1,COD。,,,,[8]。,,,Al3+[8],PASC200mg·L-1(Al3+)。,COD300mg·L-1,69.8%,pH4。3.2 3.2.1 ,,,2.5g·L-1,1hCOD,4。/g·L-14 4,,COD,20g·L-1,,,,,,[9]。,20g·L-1。3.2.2 20g·L-1,,5。/h5 5,1h,COD。,1h。,COD110.6mg·L-1。,,pH7.5,。4 (1),(PASC),,-,,,。(2):pH,n(Al)/n(Si)=2PASC200mg·L-1(Al3+),20g·L-1,1h。(3)-,COD1112.8mg·L-1110.6mg·L-1,pH7,,3,。 [1] ,.[J].,2000,20(3):4-7.[2] HasegawaT,GotoK,TamboN.Characteristicofmetal-polysilicatecoagulants[J].WaterSci.Technol,1991,23(7-9):1713-1722.[3] ,.[J].,2003,(3):29-32.[4] ,,,.[J].,1997,24(2):83-87.[5] GuptaGS.Removalofchromedyefromaqueoussolutionsbyflyash[J].Water,AirandSoilPollution,1988,37(6):13-24.[6] ,,.[J].(),2004,34(5):567-570.[7] ,,,.[J].1997,11(5):3-6.[8] ,.[J].,1998,18(3):6-9.[9] ,,,.、[J].,1999,19(4):132-135.44刘 红等:化学方法深度处理焦化废水的研究 20068
本文标题:化学方法深度处理焦化废水的研究刘红
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