底灰动态吸附焦化和造纸废水研究

3　4环境工程学报Vol.3,No.420094ChineseJournalofEnvironmentalEngineeringApr.2009瞿艳芝　孙卫玲＊　叶正芳　倪晋仁(,,100871)　　、;,。,,;(POC),POC(TOC)17%,POCTOC2.3%,COD;COD;,OM27527%,。　　　　　　X703.1　　　A　　　1673-9108(2009)04-0581-05AstudyondynamicadsorptionofcokingandpapermakingwastewatersbybottomashQuYanzhi　SunWeiling　YeZhengfang　NiJinren(DepartmentofEnvironmentalEngineering,PekingUniversity,TheKeyLaboratoryofWaterandSedimentSciences,MinistryofEducation,Beijing100871)Abstract　Physicalandchemicalcharacteristicsofthebottomash,suchasmineralcomposition,chemicalcompositionandsurfacearea,weredeterminedinthispaper.Adsorptionofcokingandpapermakingwastewatersbybottomashwasstudiedasfunctionsofflowrateandbeddepthbycolumnexperiments.Bottomashcouldtreatwastewaterviacoagulationbesidesadsorption,andPOCwasmuchmoreeasilyremovedviacoagulation.Theper-centageofPOCinTOCwas17.0%forcokingwastewater,andonly2.3%forpapermakingwastewater.There-fore,theCODremovalefficiencyforcokingwastewaterwasmuchhigherthanthatforpapermakingwastewaterduetoitshigherpercentageofPOC.Forcokingwastewater,itscolorremovalefficiencywashigherthanitsCODre-movalefficiency.Atthepointofsaturation,theOM275removalefficiencystillcouldreachabout27%,whichwasmanifestingthatthearomaticsubstancewasmoreeasilyremovedthantheotherorganicsubstances.Keywords　bottomash;adsorption;coagulation;cokingwastewater;papermakingwastewater:(40501063):2008-08-29;:2008-09-17:(1985～),,,、。E-mail:[e-mail]..edu.cn＊,E-mail:[e-mail]　　,。,,,。,。,[1～5]。,、,,、、。,,,2[6]。,,、、。1　1.1　--;3,1。1　Table1　WaterqualityofcokingandpapermakingwastewatersCOD(mg/L)TOC(mg/L)(mg/L)(mg/L)(mg/L)(μs/cm)pH()11238.624.5322.80.9521508.7512567.215.470.62.060.6210538.73　　1/。1,275nm,[7],,275nmOM275。430nm,,1。1　、/Fig.1　UV-visspectraofcokingandpapermakingwastewaters1.2　,0.074～0.2mm,0.2～0.45mm,1～2mm,,0.074～0.2mm。、X(ARLADVANT'XP,)、X(D/max-RA,)(ST-03,)。1.25m2/g,2。1.3　,,(5mL/min0.5mL/min)、(160mm230mm)。2　Table2　Characteristicsofbottomash(wt%)(wt%)SiO251.8766Al2O326.8310Fe2O38.759CaO4.984K2O1.452TiO21.542MgO0.4154.1722。20mm,400mm,,,1～2mm、0.45～1mm、0.2～0.45mm1cm,0.074～0.2mm,。,,。2　Fig.2　Schematicdiagramofdynamicadsorptionexperiment1.4　COD、TOC、/、COD(DRB200,HACH,)、TOC/TN5824:(MultiN/C3000,AnalytikJena,)、/(SPECORD200,AnalytikJena,)、(5nm,700V,F-4500,)。(GB11903-89)。,[8],XDA-8。2　2.1　COD3,COD。3,,,,,。0.5mL/min,160mm230mm,COD。[9][10],COD32.6%50%,COD(,mg/L),。3　CODFig.3　CODremovalefficiencyforcokingandpapermakingwastewaters,,0.5mL/min,160mm,29h,COD20%,20h。,(POC)(DOC)。0.45μm,(TOC),(DOC),TOCDOCPOC,4。4　POCDOCFig.4　POCandDOCdistributionincokingandpapermakingwastewaters4,POC6.56mg/L,DOC32.06mg/L,POCTOC17%;POC0.36mg/L,DOC15.11mg/L,POCTOC2.3%。,,:(1)FeAl(2),FeAl,Zeta,,[11];(2)Fan[12],Fe、Al,,;(3),,。POC,DOC。POC,COD。2.2　OM2755(a)。(160mm),,5833。3(a)5(a),COD。0.5mL/min,29h,60%,,COD20%。55%45%,[13],,。,、[8]。,COD。[13],,。5　OM275Fig.5　ColorremovalefficiencyforcokingwastewaterandOM275removalefficiencyforpapermakingwastewaterOM2755(b),OM275,/275nm。,OM275,OM275。OM2750.52,5mL/min0.5mL/min,OM2750.38,OM27527%,COD0(3(b)),OM275COD。,。6。6,2,Ex/Em=340nm/430nmEx/Em=280nm/435nm,1333cps1047cps;,,,3,Ex/Em=300nm/385nm、Ex/Em=240nm/390nmEx/Em=240nm/340nm,54、6149cps。,。,6,OM275。6　Fig.6　FEEMspectraofpapermakingwastewaterbeforeandafteradsorption3　　(1)COD,POC,POC,COD5844:COD。(2),,。(3)OM275COD,;,。,COD,。[1]GuptaV.K.,MittalA.,GajbeV.,etal.Removalandrecoveryofthehazardousazodyeacidorange7throughad-sorptionoverwastematerials:Bottomashandde-oiledso-ya.Ind.Eng.Chem.Res.,2006,45:1446～1453[2]MittalA.,MalviyaA.,KaurD.,etal.Studiesonthead-sorptionkineticsandisothermsfortheremovalandrecoveryofmethylorangefromwastewatersusingwastematerials.J.Hazard.Mater.,2007,148:229～240[3]SunW.L.,QuY.Z.,YuQ.,etal.Adsorptionofor-ganicpollutantsfromcokingandpapermakingwastewatersbybottomash.J.Hazard.Mater.,2008,154:595～601[4].++.,2000,20(7):19～22[5],.、.,1995,18(3):72～73[6]LimB.R.,HuH.Y.,FujieK.Biologicaldegradationandchemicaloxidationcharacteristicsofcoke-ovenwastewater.WaterAirSoilPollut.,2003,146:23～33[7]SunW.L.,NiJ.R.,LiuT.T.Effectofsedimenthu-micsubstancesonsorptionofselectedendocrinedisruptors.WaterAirSoilPollut.Focus,2006,6:583～591[8],,,..,2006,27(5):909～912[9],,.-.,1999,25(5):9～10[10],..,1996,15(8):29～32[11],,,..,2007,36(13):56～59[12]FanM.,BrownR.,WheelockT.D.,etal.Produc-tionofacomplexcoagulantfromflyash.Chem.Eng.J.,2005,106:269～277[13],,,.PDADMAC.,2007,28(1):92～97585