粉煤灰制备聚硅酸铁铝复合混凝剂正交实验分析

24120093JournalofAnhuiUniversityofTechnologyandScienceVol.24.No.1Mar.,2009(yjy);(jq)(6),,,,:1672-2477(2009)01-0006-04,,(,241000):.pH,30min2hpH324h,98%.,,.:;;;:X703.1:A.,4,300,30%.,,.Maohong[1],120,4h,FeAl84.8%55.1%,[2].[3,4]3,,CODcr57.5%,SS93.1%.[5],(PSFA).[6],903.5h,,,CODcr40%80%.HeathLloyd[7](SO2)PFS,,TOCPFS10%.,,,,pH4..11.1,1.1(/%)SiO2Fe2O3Al2O3CaOMgOTiO2SO3K2ONa2OP2O551.9413.1024.063.740.930.963.001.520.320.0914.971.21,SiO2Al2O3Fe2O3,Al(3Al2O32SiO2),,,,Si-Al,Si,Na2SiO3NaAlO2,Fe2O3,,,,FeAl.:Na2CO3Na2O+CO2Al2O3+Na2O2NaAlO2SiO2+Na2ONa2SiO3:2008-10-08:2008092008l081:197.2NaAlO2+4HClAlCl3+NaCl+2H2ONaSiO3+2HClH2SiO3+2NaCl1.3(325170100),(SX2-5-12),(JJ-4),(XA-1),(SHZ-3),(DHG-2003A),(HH-6),pH(XDF-2),(WGZ-200),.1.4,,325170100;2.0g3.5g3,3,(900);,3,50mL11,;,;NaOHpH,,..1.5,40NTU.1.640g,100mL,40%;200mL,,30s,30min,10min,.22.1pH4,30min60min90min,1h2h3h,234,12h24h36h,,L9(34)(2).2L9(34)/min/hpH/h1301212260232439034362.29,,3,4.3/mL/mL/NTU/NTU11.41.82401.8,21.31.815400.8,31.21.56407.7,41.11.43402.5,51.21.56401.2,61.01.65403.271.02.0403.4,81.51.95403.7,91.82.34404.2,3,,1.01.8mL,1.432.0mL,,SF,3371,:2PA.4pH.:0min2hpH24h.4A()/minB()/hC(pH)D()/hE()/%130121295.5230232498330343680.7460133693.8560241297660322492790142491.5890223690.7990331289.5K1274.2280.8278.2282K2282.8285.7281.3281.5E=828.7K3271.7262.2269.2265.2=92.1K191.493.692.794K294.395.293.893.8K390.687.489.788.4R3.77.84.15.6,,,1.82mL,5min,38.70NTU,0.78NTU,,98.2%..2.31+PAM,40%10g/L.,Fe2(SO4)3Fe2(SO4)3+PAM,40NTU,20,pH7,1,.1,Fe2(SO4)3,.Fe2(SO4)3+PAM,.,,.,3,Fe2(SO4)3+PAM1/2,Fe2(SO4)31/3,,.3,,:,,,pH,30min2h324h,98%.,.,,,,,,,82009.:[1]MaohongFan,RobertCBrown,ThomasDWheelock,etal.Productionofacomplexcoagulantfromflyash[J].ChemicalEngineeringJournal,2005,106:2692277.[2]MaohongFan,RobertCBrown,J(Hans)VanLeeuwen,etal.Thekineticsofproducingsulfate-basedcomplexco2agulantfromflyash[J].ChemicalEngineeringandProcessing,2005,42:101921025.[3],,,.[J].,2007,28(11):250722514.[4],,,.[J].,2008,34(5):2102214.[5],.[J].,2000,18(2):46249.[6],,.[J].,2000,20(1):63265.[7]HeathLloyd,AdrienneTCooperb,MaohongFan,etal.PilotplantevaluationofPFSfromcoal-firedpowerplantwaste[J].ChemicalEngineeringandProcessing,2007,46:2572261.OrthogonalexperimentaloptimumanalysisforpreparationofcomplexcoagulantPSFAfromflyashTANGHai,YANGFen,CHENYi(Dept.ofBioch.Engn.,AnhuiUniversityofTechnologyandScience,Wuhu241000,China)Abstract:PreparationforcomplexcoagulantPSFAfromFlyAshwasoptimizedandanalyzedbyorthogo2nalexperimentalmethods.Theresultsshowedthattheorderofimportantoftechnologicalparametersaffectingcoagulationprocesswereacidpicklingtime,polymerizationtime,pHandroastingtime,98%ofNTUremovalefficiencywasobtainedforthetreatmentofmunicipalcombinedsewersundertheoptimalexperimentalvalues(30min2h324h).Moreover,ithasmanyadvantagessuchaslowerturbidityofeffluent,fastercoagulationsedimentationrateandlesstreatmentexpensescomparedwithothercom2mercialcoagulants.Keywords:orthogonalexperiment;flyash;coagulant;PSFA91,: