Fenton混凝沉淀法处理高浓度焦化废水的研究

FentonTreatmentofcokingwastewaterwithFentonoxidation2sedimentation,,(,430081):H2O2,FeSO47H2OFenton,,CODNH3-N:pH3,30min,80,COD,NH3-N,93.1%96.2%90.8%90.2%:;Fenton;;Abstract:Fenton2oxidation2sedimentationwasusedtotreatcokingwastewater.TheremovalofCOD,NH3-N,turbidityandcolorwasmainlystudied.Theinfluenceeffectsandconditionswereinvestigated.TheresultsshowthattheremovalefficiencyofCOD,NH3-N,turbidityandcolorcanreach93.1%,96.2%,90.8%and90.2%undertheconditionsofpH=3,oxidationtime30minandtemperature80respectively.Keywords:pre2oxidation;Fentonprocess;coagulatingsedimentation;cokingwastewater:X703:B:1009-4032(2005)03-0041-03,,,,,,[1](),,,CODFenton-,1111,,,,11/NUTpH/CODcr/mgL-1NH3-N/mgL-1110.87.33902693.873.41.21.2.1,,,,1.2.2H2O2(30%),FeSO47H2O,FeCl3,(PAM),(PAC),,1.2.3;pHpH;;COD;[2]22.1-J.H.Fenton1894H2O2[3],H2O2Fe2+(OH),,:Fe2++H2O2Fe3++OH+OH-(1)Fe3++H2OFe2++HO2+H+(2)Fe2++OHFe3++OH(3)Fe3++HO2Fe2++O2+H+(4)OH+H2O2H2O+HO2(5)1420059213©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(6)O2H2O2O2+OH-(7),Fe2+,,H2O2FeSO47H2O,H2O2FentonpH,Fe2+,H2O22.1.1pH100ml,0.3g/LFeSO47H2O0.1L/LH2O2(30%),80,30min,pH,pH-,11pH1,pH,CODpH=3,COD92.2%,pH=4,90.2%pH,CODFe2+pH,,Fe2+H2O2OH,pH342.1.2FeSO47H2OpH3,0.03L/L30%H2O2,30min,80,FeSO47H2O,-,22,FeSO47H2O,COD,FeSO47H2O0.3g/L,COD92.5%79%,FeSO47H2O,COD,Fe2+Fenton,OH,Fe2+,OH,[4]2FeSO47H2O2.1.3H2O2pHFeSO47H2O,H2O2-,33H2O23,CODH2O2,H2O20.21mg/L,COD91.9%77%H2O2,CODH2O2,(8)(R),OH,H2O2:R+OHROH(8)2420059213©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(9)2.1.4pHH2O2FeSO47H2O,-,44,,[5]Fenton,,,,FentonOH[6],H2O2O2H2O4:80,COD,COD;80,,,2.2,,(PAC),(PSiAC),(PSiFC),(FeCl3),22/mgL-1COD/%/%FeCl314092.390.1,PAC20090.285.2,PSiAC24089.082.4,PSiFC26089.684.6,2:FeCl3,FeCl3100ml,pH,FeSO47H2OH2O2(30%)pH,FeCl3140mg/L,5min,30min,COD,33/NUT/COD/mgL-1NH3-N/mgL-1110.8902693.873.410.281862.8/%90.891.193.196.23(1)FentonCOD2693mg/L,92%,,Fenton(2)FentonFeCl3,COD,NH3-N,93.1%,91.1%96.2%(3)Fenton,,,,:[1],,1Fenton[J]1,1997:23-241[2],1[J]1,1999,17(1):16-191[3]1[M]1:,20001[4],1[J]1,2000,26(6):35-371[5]1[J]1:,20001[6]ChiangL,ChangJ.Electrochemicaloxidationprocessforthetreatmentofcoke-plantwastewater[J].JEnvironmentalScience,1995,30(4):753-771.:2004212227:(19642),,,,,342005:Fenton3©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.中国城镇水网