改性沸石对焦化废水中COD的去除研究张惠灵

　　:2006-02-22:(1969-),,,。:1673-1212(2006)05-0129-03改性沸石对焦化废水中COD的去除研究张惠灵1,谢黎2(1.2,430081)　:本文研究了沸石经NaCl、NaOH、HDTMA(溴化十六烷基三甲胺)改性后对焦化废水中的COD的去除效果。比较得出HDTMA改性沸石对COD的去除能力较好,而且废水的色度明显减小。接着进一步研究了该废水处理过程中的影响因素,包括吸附时间、烘干温度、改性剂HDTMA的浓度、pH值等。结果表明,HDTMA改性沸石处理焦化废水可使其COD的浓度降低至150mgL以下,达到污水综合排放二级标准。:改性沸石;焦化废水;COD去除;吸附:X703.1:A　　,。,。。、、、,,、、、[1]。CODNH3-N,,。,,SiO2、A12O3、H2O、[2]。:AmBpO2p·nH2O,Axq[(AlO2)x(SiO2)y]nH2O,:ACa、Na、K、Ba、Sr,BAlSi,q,m,n,xAl,ySi,yx1～5,(x+y)[3]。,,,,,120,15。,,。、,。1　1.1　,Autosorb-1-MPAppa-ratus64600cm2g,1。:NaCl、NaOH、HDTMA:(),COD580mgL。1　SiO2Al2O3CaOK2ONa2OFe2O3MgOTiO2%65.4612.242.892.211.621.020.620.2113.561.2　:HY—4();pH:HS—25pH();,,,。1.3　40190,。20g,100mL,24h,30min,,2h,。1.4　200mL,50mL。,,。,1h,COD,。COD《》(GB11914-89)。2　2.1　NaCl0.584g、NaOH0.4g、HDTMA0.5g,,100mL,·129·31520068ENVIRONMENTALSCIENCEANDMANAGEMENTVol.31.No.5Aug.20060.1molL、0.1molL、5gL。4019010g,,50mL。2g60mL,,2h,1h,20mlCOD。2。2　COD40190HDTMANaClNaOHHDTMANaClNaOHCODmg·l-1194.8237.7206.4146.5205.2183.7%65.3657.7363.3673.8463.3667.21　　2,HDTMACOD,19040,190,HDTMA。,NaOH,;NaCl,;HDTMA,,。HDTMA,,,,[4],,。2.2　HDTMACOD2.2.1　沸石用量对COD去除率的影响0.2g,0.5g,1.0g,1.5g,2.0g,2.5g200mL,,50mL,2h,,1h,COD。,,COD,1.5g,,COD,,,150mgL,1.5g,30gL。,,(3～11),,,,[3]。,,,,。,、、[4]。,,,,。2.2.2　pH值的影响pHpH6.18,4molLNaOH20%,pH。50mL200mL,,pH2.33,4.54,7.32,8.94,10.40。1.5g,2h,1h,20mL。,pHCOD,pH,CODpH。Z.Li[5]。,,,,。pH。2.2.3　振荡时间(吸附时间)的影响,,,1.5g;50ml200ml,:10min,30min,50min,70min,90min。1h。,70min,COD,1h,90min70min,,16h,,。,70minCOD,,70min。2.2.4　改性沸石烘干温度的影响,,1.5g;50ml200ml,:90℃,120℃,150℃,180℃,210℃。70min,1h。,,,,50%,。,[3]。、、。,COD,70%～75%,,210℃,,,,,。,,;,,。2.2.5　改性剂HDTMA的浓度的影响HDTMA,:0mg·130·31520068·CODVol.31.No.5Aug.2006L,5mgL,10mgL,15mgL,20mgL。,。150℃,1.5g,70min,1h。,COD,,,。HDTMA,,HDTMA10mgL,COD76.66%,COD135mgL。HDTMA,,HDTMA,,,HDTMA,HDTMA,,。3　3.1　HDTMA,,COD,HDTMA10gL,150℃,。3.2　COD580mgL,19030gL,70min,COD135mgL,。:[1]张瑜.江白茹.钢铁工业焦化废水治理技术研究[J].工业安全与环保,2002.28(7).5-7.[2]郭焕晓.王彦斌.邱熔处.沸石去除微污染水中苯的效果研究[D].全国给水排水技术情报网技术交流会,2000.10-11.[3]石峰.浅谈沸石在微污染水预处理中的应用[J].中国水网.[4]田钟荃.沸石去除饮用水源中有机污染物的展望[J].中国给水排水,1999.15(4).31-32.[5]Z.Li.RobertSBowman.Sorptionofperchloroe-thyl-enebysurfactant-modifiedzeoliteascontrolledbysurfactantloading[J].Environ.Sci.Tchnol.1998.32.2278-2282.ResearchonRemovalCODCokingWastewaterWithModifiedZeoliteZHANGHui-ling1,XIELi2(1.2WuhanTechnicalCollege,Wuhan430081,China)Abstract:Inthispaper,theadsorptioneffectofzeolitemodifiedwithNaCl、NaOH、HDTMAtoCODincokeplantwastewaterwasstudied.Bycomparison,thezeolitemodifiedwithHDTMAhadbetterabsorbabilityforCOD,andthecolorindexofthewastewaterwasdecreasedobviously.Furtherstudywasmadeoninfluencefactorsinwastewaterdisposalprocess.Thefactorsincludedadsorptiontime,dryingtemperature,theconcentrationofHDTMA,pHvalue,andsoon.TheresultsshowedthatbythistreatmentCODincokeplantwastewatercouldbereducedbelone150mgL,whichisuptothenationalsecondarystandardsforeffeluentdischarge.Keywords:modifiedzeolites;cokingwastewater;COD;adsorption投稿须知投稿请用word软件横排格式撰写,以“附件”方式发至本刊电子邮箱内。请在文章后注明作者的联系地址、邮政编码、电话及手机号码、电子邮箱,以便本刊与作者在第一时间取得联系。·131·31520068·CODVol.31.No.5Aug.2006