超高交联树脂吸附处理24D含酚废水的研究邱宇平

2,4-D[],20274017邱宇平,陈金龙,陈一良,李爱民,张全兴(南京大学环境学院污染控制与资源化国家重点实验室,江苏南京　210093)　　[]NDA-1502,4-,。-,。,16000mg/L,,0.5mg/L,。,2,4-2,4-。,,,。　　[];;2,4-;2,4-;　　[]O647.31+6.2;X786　[]A　[]1005-829X(2003)04-0050-03Investigationontheremovalofphenol-containedwastewaterin2,4-DproductionbyhypercrosslinkedresinQiuYuping,ChenJinlong,ChenYiliang,LiAimin,ZhangQuanxing(StateKeyLaboratoryofPollutionControlandResourcesReuse,SchooloftheEnvironment,NanjingUniversity,Nanjing210093,China)Abstract:Theremovalofphenol-containedwastewaterin2,4-DproductionbyhypercrosslinkedresinNDA-150hasbeeninvestigated.Theoptimumoperationparametersaredeterminedbystudyingthestaticadsorptionanddynamicadsorption-desorptionproperties.Thetotalconcentrationofphenolsintherawwastewaterisover16000mg/L.However,Thetotalconcentrationofphenolsdecreasesto0.5mg/Lafterdisposal,whichistransparentanddecolored,meetingthenationalstandard.Alotof2,4-dichlorophenoland2,4-Dcanbere-coveredbyacidificationoftherawwastewateranddesorptivesolutions.Thetechnologyisconvenientandsimpleinoperation,whichhasbothenvironmentalandeconomicbenefits.Keywords:hypercrosslinkedresin;adsorption;2,4-D;2,4-dichlorophenol;phenol-containedwastewater　　2,4-(2,4-D),,〔1〕。2,4-D,300t/d。、、、,20%。2,4-14000mg/L、2,4-()2400mg/L。,,、,,〔2〕。　　2,4-D〔3,4〕。,,,NDA-1502,4-D,0.5mg/L,。,XAD-4〔5〕。-,-,。1　　　7520,Water600,BT01-100,THZ-82,501。AmberliteXAD-4,XAD-8(Rohm-Haas),NDA-150〔6〕。2　—50—2003年4月第23卷第4期　　　　　　　　　　　IndustrialWaterTreatment　　　　　　　　　　Apr.,2003Vol.23No.42.1　废水预处理　　2,4-D,CODCr25000mg/L,pH8～9。,pH,,,,2,4-;,2,4-。pH2.0,,,。2.2　分析方法　　2,4-、2,4-D〔7〕。4-〔8〕。2.3　树脂静态吸附筛选　　0.5000g,100mL,,25℃48h,,。2.4　树脂动态吸附实验　　,10mL,,、,。2.5　树脂动态脱附实验　　,、,。2.6　树脂稳定性实验　　,10-,。3　3.1　树脂静态筛选结果　　1。1,NDA-1502,4-DXAD-4XAD-8。NDA-150,(0.252mL/g)XAD-4(0.005mL/g),〔5〕。XAD-8,。3.2　影响吸附的因素3.2.1　上柱液pH的选择　　NDA-150图1　树脂静态吸附效果。pH,2,4-2,4-D2,4-2,4-D。pH2,2,pH,NDA-150。,。,pH2.0。图2　pH的选择　　2,pH2.0,400mL,0.5mg/L;400mL,。,400mL。3.2.2　吸附流量的选择　　3,3,,,。,400mL,50mL/h。图3　吸附流量的选择3.3　影响脱附的因素3.3.1　脱附剂浓度和用量的选择　　,2,4-2,4-D,。NaOH,。110mLNaOH(8%)+10mLNaOH(4%)+30mL;210mLNaOH(—51—2003-04,23(4)　　　　　　　　邱宇平,等:超高交联树脂吸附处理2,4-D含酚废水的研究8%)+30mL;310mLNaOH(4%)+30mL。,1。3.3.2　脱附流速的选择　　20mL/h,。5mL/h10mL/h,。10mL/h。3.3.3　脱附温度的选择　　,20℃,60℃80℃。,,100%,。〔9〕,,。,,。80℃。3.3.4　脱附液的处理　　,2,4-2,4-D,。3.4　小试稳定性实验　　,10,:NDA-150-,。1。表1　NDA-150小试稳定性实验结果12345678910/(mg·L-1)0.290.270.430.290.270.330.340.500.290.27/%99991009810298100101991014　　　4。,0.5mg/L,。图4　废水处理工艺5　　　(1)NDA-1502,4-DAmberliteXAD-4XAD-8。　　(2),50mL/h,400mL,0.5mg/L,99.9%。　　(3),80℃,10mL/h,10mLNaOH(8%)+10mLNaOH(4%)+30mL,100%。　　(4),2,4-2,4-。。　　(5),NDA-1502,4-D,-,。0.5mg/L。　　(6),,2,4-D,,,。[][1].[M].:,2000.435-442[2],,,.2,4-[J].,2002,31(6):468-471[3],,,.[J].,1992,12(2):24-27[4],,,.2,4-[J].,1999,19(3):20-21[5]LiAimin,ZhangQuanxing,ZhangGencheng,etal.Adsorptionofphenoliccompoundsfromaqueoussolutionsbyawater-compatiblehypercrosslinkedpolymericadsorbent[J].Chemosphere,2002,47(9):981-989[6]LiAimin,ZhangQuanxing,ChenJinlong,etal.AphenolicHy-droxylModifiedPolystyreneAdsorbingPhenolicCompoundsfromAqueousSolution[J].SeparationScienceTechnology,2002,37(14):3211-3226[7],,,.2,4-[J].,2001,29(5):580-582[8].[M].:,1990.354-357[10]XuZhaoyi,ZhangQuanxing,ChenJinlong,etal.Adsorptionofnaphthalenederivativesonhypercrosslinkedpolymericadsorbents[J].Chemosphere,1999,38(9):2003-2011[](1974—　),。:025-3231724。[]2002-10-25—52—试验研究　　　　　　　　　　　　　　　　　　　　　　　　　　　　　2003-04,23(4)