复合混凝剂处理石油化工二级出水的研究李星

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,。21,。,,、,,,。、、、、,、,,、、、、StudyonthetreatmentofpetrochemicalsecondaryeffluentwiththecomplexcoagulantLiXing1,XuFuyuan1,ChenYingwen1,WangZheming2,HuangQiuming2,WuHaisuo3,WangZhiliang3,ShenShubao1(1.CollegeofLife-ScienceandPharmacy,NanjingUniversityofTechnology,Nanjing210009,China;2.WaterPlant,YangziPetrochemicalProjectCo.,Ltd.,Nanjing210048,China;3.JiangsuProvincialAcademyofEnvironmentalScience,Nanjing210000,China)1,1,1,2,2,3,3,1(1.,210009;2.,210048;3.,210000)[],,、、pH、,。,PFAC+FC+AC+PAM,pH=5.0、PFAC150mg/L、m(FeCl3)∶m(AlCl3)=9∶1(50mg/L)、1h。TOC40.39%,TOC15.51mg/L,(GB8978—1996);。[];;[]X703.1[]A[]1005-829X(2010)01-0035-04Abstract:Thecoagulationeffectofdifferentcoagulantsonthepetrochemicalsecondaryeffluenthasbeeninvestigated,andthesecoagulantshavebeenmatchedaccordingtotheircharacteristics.Thecomplexcoagulant,thetypeofmatchedcomponent,dosage,pH,andsettlingtimeofthecoagulationarestudied.Atthesametime,bymeansofprefabflocculanttest,theremovalmechanismoforganismsarediscussed.Theresultsshowthattreatmenteffectofthecomplexcoagulant,PFAC+FC+AC+PAM,hasmoreremarkableenhancementcomparedtotheindividualcoagulants.Thebestcoagulatingconditionsofthesystemareasfollows:PFACdosage=150mg/L,pH=5,settlingtime=1h,m(FeCl3)∶m(AlCl3)=9∶1(thetotaldosageis50mg/L),andtheremovalrateofTOCisashighas40.39%.Afterthetreatment,TOCisreducedto15.51mg/L,TheeffluentqualitycanmeettherequirementsoftheFirst-classStandardofIntegratedWastewaterDischargeStandards(GB8978—1996).Chargeneutralizationandcomplexation-adsorptionarethemainmechanismsfororganismremovalduringthecoagulationproccess.Keywords:petrochemicalsecondaryeffluent;coagulation;complexcoagulant[]863(2006AA02Z211);(2007020);(BK2006181,BK2007188);(2008ZX07101-003)30120101IndustrialWaterTreatmentVol.30No.1Jan.,201035——2010-01,30(1)1/(mg·L-1)TOC/%UV254/%AlCl3+PAM50+0.412.3034.84FeCl3+PAM50+0.46.5627.65PFAC+PAM100+0.416.5639.38PFAC+AlCl3+PAM100+50+0.432.4748.80PFAC+FeCl3+PAM100+50+0.435.9848.13AlCl3+FeCl3+PAM50+50+0.434.5748.38PFAC+AlCl3+FeCl3+PAM100+50+50+0.439.7357.54〔1〕。,,,,,,。11.1A/O。,,,pH7.5~8.5,TOC25.16~30.62mg/L,UV2540.6499~0.9607cm-1。1.2:TOC();UV-2100(PE);()。:Fe2(SO4)3(FS)、FeCl3(FC)、Al2(SO4)3(AS)、AlCl3(AC),;(PFS)、(PFAC)、(PAM),。1.31L,,pH,200r/min,1.5min,PAM0.5min,10min,,TOCUV254,。22.1100mg/L,pH=5.5FS、FC、AC、PFAC、PFS5。,,PAM,,0.4mg/L。1。1,5PFACACFCFSPFS。PFAC,,,〔2-4〕。,,PFAC,,,,TOC,,PFS,,。FC、ACPFAC,PFAC,AlFeTOC,AlTOCUV254;5,UV254TOC,〔5〕。2.2pHPFACPFAC、FCAC3100mg/L,0.1mol/LpH,3pH。2。2,pH3TOC。PFACACpH5.0,TOC,FCpH5.5。3pHpH5.0~5.5TOC,pH,,。2.3,pH5.03。1。36——2010-01,30(1)4PFAC5TOC,:1,3,TOC39.73%,UV25457.54%。,,,。2.4FeCl3AlCl3pH5.0,PFAC100mg/L,FeCl3AlCl350mg/L,FeCl3AlCl3,。3。3,m(FeCl3)∶m(AlCl3)=9∶1,TOCUV254;PFAC+FeCl3+AlCl3,,Fe3+〔6〕。2.5PFAC,pH5.0,m(FeCl3)∶m(AlCl3)=9∶1(50mg/L)PFAC,4。4,PFAC,TOCUV254,,TOC,PFAC,TOC;TOCUV254,,,,TOC,。PFAC50mg/L,,;PFAC100mg/L150mg/L,TOC;150mg/L,TOC,,,,,〔7〕;,。,PFAC150mg/L。2.6,,,;,,。,〔pH=5.0,PFAC150mg/L,m(FeCl3)∶m(AlCl3)=9∶1(50mg/L)〕,TOC,TOC,5。5,1.0~1.5h,,,〔8〕,TOC。,1hTOC40.39%,TOC15.51mg/L,(GB8978—1996)。2.71L,,,。1L37——2010-01,30(1)2TOC/%140.392+PAM37.43336.874PAM-4.46,,pH5.0,。2。212,TOC(37.43%),TOC,TOC2.96%,TOC。2,3,4,PAMTOC(PAMTOC),TOC,PAM,。TOC,(ESP)、(SMP)、,,TOC。,,,,;、。,。3PFAC1500/t,PAM20000/t,FC3500/t,AC3500/t。PFAC150mg/L,FCAC50mg/L,PAM0.4mg/L。=0.15kg/m3×1.5/kg+0.05kg/m3×3.5/kg+0.00004kg/m3×20/kg≈0.4/m3。4(1),PFAC+FC+AC+PAMpH=5.0,PFAC150mg/L,m(FeCl3)∶m(AlCl3)=9∶1(50mg/L),1h。(2),TOC40.39%,0.4/m3,TOC15.51mg/L,(GB8978—1996)。(3)PFAC+FC+AC+PAM,。[][1],,.[M].:,1998:2-19.[2],,.[J].,1995,15(4):289-293.[3],,,.A2/O[J].,2001,17(11):13-16.[4]SarasaJ,LiabresT,OrmadP,etal.Characterizationandphoto-Fen-tontreatmentofusedtiresleachate[J].JournalofHazardousMaterials,2006,136(3):874-881.[5]KimberlyBA,MortezaA,EvaI,etal.ConventionalandoptimizedcoagulationforNOMremoval[J].AWWA,2000,92(10):47-58.[6],,.A/O[J].,2008,28(3):215-219.[7],,,.PMFC[J].,2004,24(12):22-24.[8],,,.()[M].:,2000:168-171.[](1983—),,。:13912964213,E-mail:zsq852@163.com。[]2009-09-05(),。、、,、、、,、、、,20mg/L(CaCO3),25~40mg/L()。———,.CN101186396···············································38——

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