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2811200711JournalofTextileResearchVol.28No.11Nov.2007:025329721(2007)11200692041,2,2(11,161006;21,300222),(PSAF),:pH69,PSAF;,pH712,PSAF75mgPL,SSCODCr9411%8816%8112%;PAC()PFS(),PSAF,,,;;;;:TS199:APreparationofinorganiccompoundcoagulantanditsapplicationinthetreatmentofdyeingeffluentSUIZhihui1,2,LIUAnjun2(11SchoolofLightIndustryandTextile,QiqiharUniversity,Qiqihar,Heilongjiang161006,China;21CollegeofFoodEngineering&Biotechnology,TianjinUniversityofScience&Technology,Tianjin300222,China)AbstractAnewtypeofinorganicpolymercoagulantpolysilicatealuminiumferric(PSAF)waspreparedfromcoalgangueandpyriteslagandusedascoagulantinthetreatmentofdyeingeffluent,aimingatimprovingthetreatmenteffectofdyeingeffluentwithcoagulant.TheexperimentalresultsshowedthatPSAFhadagoodcoagulationeffectinthetreatmentofdyeingeffluentunderthepHvaluerangingfrom6to9.TheremovalrateofSS,colorityandCODcrwas9411%,8816%and8112%respectivelyundersuchconditionsasroomtemperature,pHvalue=712anddosageofthecoagulant75mgPL.Incomparisonwiththeconventionalcoagulants,suchasPAC(polyaluminiumchloride)andPFS(polyferricsulfate),thecoagulationperformanceofPSAFischaracterizedbyhighersettlementrate,smallersludgevolume,lowerremainsofpollutantsinthetreateddyeingeffluentandlowercostoftreatment.Keywordscoalgangue;pyriteslag;polysilicatealuminiumferriccoagulant;dyeingeffluent;wastewatertreatment:2007-02-09:2007-05-28:(10551339):(1971),,,E2mail:szh2736@163.com,,,[1],,,,,[2],,,,,,,[3-11],,,,,(PSAF),1PSAF111PSAF,,,11Tab.1Chemicalcompositionoftherawmaterials%SiO25016517194Al2O3281735123Fe2O3119467142CaO21052132MgO1135111511823178112PSAF,,11PSAFFig.1TechnologicalflowofPSAFpreparation:1)700,2h;2),20%(NaCl),100rPmin,2h,90,013;3),014MPa,150,2h;4),3%,pH4,20,2h113PSAF,7%,pH210,4105Fe3+Al3+SO2-4,,,2211,CODCr658mgPL,BOD5198mgPL,SS232mgPL,980,pH1010212PSAF,22Fig.2Technologicalflowofwastewatertreatment213DBJ2621500mL400mL,,160rPmin2min,,60rPmin,10min,20min25mmSS,,CODCr3311pH75mgPL,pH,pH,3,pH69,Al3+Fe3+,pH,Al()Fe(),,,,,PSAF312pH712,07283pHFig.3InfluenceofpHoncoagulationeffect,,44,PSAF,SSCODcr,75mgPL,,,,,;,,,,,,4Fig.4Influenceofcoagulantdosageoncoagulationeffect313,PSAFPAC(,)PFS(,),35,PSAF2(8min),,PSAF;8min,,;14min,,2PSAF,PSAF,,20min5Fig.5Influenceofsedimentationtimeoncoagulationeffect314,500mLPSAFPACPFS,500mL,,66Fig.6Relationshipbetweenheightofthesupernateandsedimentationtime6,PSAF,14min,PACPFSPSAFPSAF,:PSAF,1711:;PACPFS,PSAF315,PSAFPACPFS3,SSCODCr,22Tab.2Resultsoftreatmentwithdifferentcoagulants%SSCODCrPSAF941188168112PAC781973196714PFS7712681461152,3,PSAFPACPFSPSAFAl3+Fe3+,;,PSAF,,,,PSAF,4PSAFPSAFAl3+Fe3+,,,;Al3+Fe3+,,,,;PSAF,105,,51)PSAF,,,PSAF2)pH712PSAF75mgPL,PSAF:SSCODCr9411%8816%8112%,PACPFSFZXB:[1],.[J].,2000,31(5):1-3.[2].[J].,2007,28(1):116-119.[3],,,.[J].,2005,31(1):36-38.[4]HasegawaT,HashimotoK,OnitsukaT,etal.Characteristicsofmetal2polysilicatecoagulants[J].WaterScienceandTechnology,1991(23):1713-1722.[5].[J].,1999,15(2):1-4.[6]BurnetG.Newertechnologiesforresourcerecoveryfromcoalcombustionsolidwastes[J].Energy,1986,11(11):1363.[7],,.[J].,1998,6(2):45-49.[8],.[J].,1998,18(1):17-19.[9],,.PFCS[J].,1996,17(4):59-61.[10],,,.[J].,1996,17(4):62-63,66.[11],,,.[J].,1996,16(5):396-400.2728