工业废弃物制备聚合硫酸铁研究及最佳试验条件分析黄勇强

PFS-PFSCOD、BOD、[1-2]。、80%。[3-5]。PFS。11.1、、PFS。DF-GDS-3AZR4-6UV-7504。1.2PFS500mLFeSO4·7H2O60℃。n[SO42-]/n[Fe]30%H2O22.0L·min-1Fe2+Fe3+2.5hpH1.0～1.5。。1.3pH=8.09=1.079330nmCOD=462mg·L-1ρ(SS)=228mg·L-10.1g·L-1101NTU。1000mL6PFSPFSpH250r·min-11min30r·min-110min30min6cmCOD、。[6]。212013、PFS。、、4PFS。PFSPFS。PFSCOD、。TQ314.253X791A1000-3770(2011)[e-mail]37920119TECHNOLOGYOFWATERTREATMENTVol.37No.9Sep.,201144DOI:10.16796/j.cnki.1000-3770.2011.09.0112Tab.2ThevariablesandlevelsofdesignfactorsA/mLB/℃C/hD1233040505060702.533.51.201.251.30PFS。22.1PFSFe2+、H2O2、pHFe2+n[SO42-]/n[Fe]、、。、、。2.1.11Fe2+FeSO4·7H2O200g70mLn(SO42-)/n(Fe)=1.3H2O230mLNaNO22%120r·min-140、50、60、70、80℃3h。1Fe2+60℃70℃70℃。[7]Fe2+Fe3+。2。H2O2Fe2+。H2O2。H2O230～40mL80minFe2+3h。1n(SO42-)/n(Fe)1。[8]n(SO42-)/n(Fe)n(SO42-)/n(Fe)Fe2(SO4)3PFS。1.2～1.3PFS。2.1.2H2O2A、B、C、n(SO42-)/n(Fe)D43200g70mL120r·min-1NaNO23%pH=1.04h。2、3。3PFSn(SO42-)/n(Fe)、、、H2O21Fig.1OxidationofFe2+underdifferentreactiontemperaiure020406080100120140160180200024681012
/%/min02040608010012014002468101214
/%/min2H2O2Fig.2OxidationofFe2+underdifferentdoseofH2O21n(SO42-)/n(Fe)Tab.1ThetypicalpropertiesofthePFSproductsindifferentn(SO42-)/n(Fe)1.11.21.31.41.5/%/%19.1311.6515.1711.1613.0511.129.7310.977.359.8745504Tab.4TechnologystandardsofPFS/g·cm-3/%Fe2+/%/%pH1%PFS1PFS2PFS3≥1.451.421.471.46≥1111.311.2111.17≤0.10.078.0～16.012.413.312.82.0～3.02.72.22.401002003004005006007008009000102030405060708090100
/mgL/%0102030405060708090100/%3COD、SS、Fig.3EffectofdifferentcoagulantonCOD,SS,colorremoval3Tab.3ResultofcoagulationperformancetestA/mLB/℃C/hD/%123456789k1k2k3r30303040404050505096.4097.5796.971.17A250607050607050607096.1797.8396.931.66B22.533.533.52.53.52.5396.5796.5397.831.3C31.21.251.31.31.21.251.251.31.296.0097.0797.871.87D394.296.998.197.298.397.297.198.395.5H2O240mL60℃3.5hn(SO42-)/n(Fe)1.3。43PFSGB14591－2006、1。2.2PFS。3PFS。COD、600mg·L-13PFSPFS。330%PFS。PFS200g70mLH2O240mL3g60℃3.5hn(SO42-)/n(Fe)1.3。PFSGB14591－2006。PFSCOD、PFS。。[1]JQJiang,NJDGraham.Observationsofthecomparativehydroly-sis/precipitationbehaviorofpolyferricsulphateandferricsulphate[J].WaterRes.,1998,32(3):930-935.[2]AIZouboulis,PAMoussas,FVasilakou.Polyferricsulphate:preparation,characterizationandapplicationincoagulationexperiments[J].JournalofHazardousMaterials,2008(155):459-468.[3],,,.[J].,2005(3):38-391.[4],.[J].,2010,20(2):3-8.[5],,.[J].,2007,39(2):15-17.[6],,.[J].,2008,25(1):4-6.[7]KuznetsovaNI,LikholobovVA,GurrathM,etal.Promotioneffectofcarbonontheoxidationofferrousionsbyoxygeninthepresenceofsodiumnitrite[J].AppliedCatalysisA:General,1995,128(1):41-52.[8].[M].:,2006.37946PREPARATIONANDCOAGULATIONPERFORMANCEOFPOLYFERRICSULFATE,CONSISTINGOFTITANIUMDIOXIDEBYPRODUCTSANDWASTEACIDHuangYongqiang,HuiChunxue,WuTao,WangJiqiu,ChenYao(SchoolofEnvironment,JiangsuUniversity,Zhenjiang212013,China)Abstract:Thebyproductsferroussulfatefromtitaniumdioxideandwastesulfuricacidwereusedtopreparepolyferricsulfate(PFS)throughtheprocessesofoxidation,dissolutionandpolymerizationunderthecertainpressureandtemperaturewithappropriatecatalystandoxidant.Basedonthesinglefactorexperimentswhichweredesignedfortheoptimizationofthereactiontemperature,theratioofsulfateandiron,thedoseofoxidantandtheoxidationtime,theoptimizedtechnologicalconditionforthepreparationoftheliquidPFSwasdeterminedthroughthemixuniformdesignexperiments.ThecoagulationperformanceofthePFSwasevaluatedforthetreatmentofdyewastewateranditwascomparedwiththeperformanceofacommerciallyavailablePFSsamples.TheresultsshowthatthepreparedPFSandthecommercialPFShaveanequivalentcoagulationeffectintermsofCOD,turbidityandcolorremoval.Keywords:ferricsulfate;inorganiccoagulation;PFS;dyewastewater。9dMLSS2000mg·L-11mg·L-1COD50mg·L-1。、、。。[1],.、[J].,2007,32(1),33-35.[2],.Orbal[J].,2010,36(10):109-111,114.[3]PHuang,SQin,QZhao,etal.Quickstart-upofmudanjiangwastew-atertreatmentplantandfactorsinfluencingphosphorousremoval[R].Paperspresentedin9thInternationalConferenceonEnviron-mentalScienceandTechnology,(9CEST2005)1-3September2005,RhodesIsland,Greece.[4],,.A2/O[J].,2005,31(9):30-33.[5],,.[J],,2005,31(132):11-14.[6],,.[J].,2003,29(4):6-11.[7],,.[J].,1996,29(2):47-51.[8].[M].4.:,2002.INOCULATEPRIMARYSLUDGETOQUICKSTART-UPACTIVATEDSLUDGESYSTEMWanQiong1,2,HeLiang1,PeiLiying1,PengDangcong1(1.SchoolofEnvironmentalandMunicipalEngineering,Xi′anUniversityofArchitectureandTechnology,Xi′an710055,China;2.CollegeofArchitectureandCivilEngineering;Xi′anUniversityofScienceandTechnology,Xi′an710054,China)Abstract:ThetotalbacterialcountoftheinfluentandtheeffluentofprimarysedimentationweredetectedbyDAPI(4',6-diamidino-2-phenylindole)staining.Andthetotalbacterialcountoftheprimarysludgewas90.3%onanaverage.Mostofbacterialwassettledwithprimarysludge.Theprimarysludgeconcludeslotsofeffectivemicrobes.Andthesemicrobesadapttothewastewaterwell.Thecomparativestudyhasbeendoneonthestart-upofanactivatedsludgesystemby