改性沸石去除农村生活污水中有机物效果研究陈兵红

　[]20080224　[](1974),,1999,,,、。　(lszjy2006011)。　　　(,323000)[]通过静态方法研究了浙江缙云斜发沸石对农村生活污水中有机物的去除效果,考察了沸石投加量、接触时间、沸石粒径和污水pH值对有机物去除率的影响,采用350、450和550℃焙烧对沸石进行加热改性,采用NaCl、KCl和CaCl2对沸石进行无机盐改性。结果表明,沸石对有机物的吸附很好的符合Langmuir吸附等温式;改性沸石的最适条件是:投加量20g/L,接触时间8h,粒径为36～65目,pH值6.0～7.5,焙烧温度550℃,改性盐类2.0mol/L的钙盐。应用于农村生活污水处理中,有机物去除率达64.71%。[]天然沸石;改性;有机物;农村生活污水;去除率[]X703.1[]A　　[]16731409(2008)02N02903　　,,,,,,[1]。。[2]。,,、、、、。,,,、[3,4]。,、、、pH,,。1　试　　验1.1　、1)材料　,,,、。、、。、,18、18～3636～65。SiO2(73.3%)Al2O3(11.7%),Na2O(1.85%)、CaO(3.62%)、K2O(1.17%)。,、、。。2)仪器与装置　HY-4();SRJX-4-15;pHS-2();101-2();FA2104、。1.2　1)沸石吸附等温线的测定　36～650.5、1.0、1.5、2.0、2.5、3.0、3.5g,250ml,(CODCr306mg/L,15.75mg/L,11.55mg/L),150r/min30℃,48h,;,,。2)有机物的去除试验　250ml,5g,,,150r/min30℃,。·29·()　2008652:JournalofYangtzeUniversity(NatSciEdit)　Jun.2008,Vol.5No.2:Sci&EngDOI:10.16772/j.cnki.1673-1409.2008.02.025,COD,。COD《》(GB11914-89)。3)加热改性方法　,(350、450、550℃,350～580℃),3h,。,。4)无机盐改性方法　CaCl2、NaClKCl3。、,(、、)。CaCl2150r/min25℃24h,,2～3,105℃2h,。NaClKCl。2　结果与分析2.1　,FreundlichLangmuir。FreundlichLangmuir:　　lgQe=nlgCe+lgK　　1/Q=1/(bQm)＊1/Ce+1/Qm,Qe,mg/g;QmLangmuir,mg/g;Ce,mg/L;b、n、K。n0.1～0.5,;n,n2,。1、2FreundlichLangmuir。1、2,FreundlichLangmuir,,Langmuir。Langmuir,12.55mg/g。1　Freundlich　　　　　　　　2　Langmuir2.2　1.25、2.5、5、12.5、25、50g(18～65),6250ml,,8h,CODCr,CODCr,3。,,;5g/250ml(20g/L),31.37%;,。,20g/L。[3～5]。2.3　6250ml,5g(18～65),,2、4、6、8、10、12h,,4。4,,;8～10h,31.37%、33.17%;10h,,12h31.10%,。,8h。·30·　()200862.4　18、18～36、36～6535g,,8h,CODCr,,5。5,18、18～3636～6530.70%、30.99%、31.37%。,。3,36～65。　　　3　　　　　　　4　　　　　　　5　　　　　　　2.5　pHpHpH6.52,4mol/LNaOH20%,pH。6250ml,,pH2.53、4.58、7.35、8.86、10.63。36～655g,8h,20ml,6。,pH。(pH=6.52),。,,pH10.63,。,pH6.0～7.5。2.6　350、450、550℃,,7。,,36～6513.25%。,,550℃。,550℃[6],44.62%。2.7　(CaCl2、NaClKCl),0.1、0.2、0.5、1.0、2.0、5.0mol/L。36～65550℃,5g/250ml。8CaCl2、NaClKCl。,CaCl22.0mol/L,64.71%;NaCl0.5mol/L,61.33%;KCl1.0mol/L,51.53%。,CaCl2。　6　pH　　　　　　　　7　　　　　　　8　　　　　　　　　3　结　　论1)Langmuir。(下转第64页)·31·52::　4　结　　论1),N3～N5,;N1、N2。2)N4,N3、N5,N1、N2。N4,N5,N6、N7。,。3),,,,。4),,N1、N2,,。、、,。,。,,,,,。[][1],.[M].::,1997.[2],.[M].:,1992.[3].[M].:,1991.[4],.[M].:,1994.[]　(上接第31页)2)、、、pH。20g/L,8h,36～65,pH6.0～7.5。3),550℃,44.62%,13.25%。NaCl、CaCl2KCl。,33.34%。[][1].[J].,2002,28(6):48～49.[2].[J].,2001,18(3):18～19.[3],,.BOD5CODcr[J].,2002,11(3):323～324.[4],.COD[J].,2006,31(5):129～131.[5],,.[J].(),2005,33(1):78～82.[6]PengChangsheng,MengHong,SongCunyi.Studiesoncharacteristicsofactivatedzeoliteinthefurthertreatmentoflightpollutedwa-ter[J].Non-MetallicMines,2001,(3):48～49.[]　·64·　()20086Abstract:Amini-cationicclaystabilizerwassynthesizedbyreactionoftrimethylamineandallylchlo-ride.Theoptimumsyntheticcondiaionsweredeterminedbymeasuringproductionrateunderdifferentconditions.Thebestreactiontimeis6hours,theoptimumreactiontemperatureis55℃,thebestra-tiooftrimethylamineandallylchlorideis1∶1.6.Evaluationresultsshowthatcomparedwithotherclaystabilizingagent,thethree-allylchlorideisbetterclayinhibition,anditbecomesbetterandbet-terwiththeconcentrationincrease.Keywords:organiccationicpolymer;claystabilizer;synthesis;anti-expansionrate29ResearchonRemovingOrganicMatterfromRuralDomesticSewagebyModifiedZeolitCHENBing-hong　(LishuiVocational&TechnologyCollege,Lishui323000)Abstract:OrganicremovalfromruraldomesticsewagebynaturalclinoptilolitecollectedfromJinyun,ZhejiangProvincewasexaminedbystaticalmethods.Theeffectofthedosage,contacttime,particlesizeandpHofzeoliteontheremovingorganicmatterwasinvestigated.350℃,450℃,550℃,Sodiumchloride,potassiumchlorideandcalciumchloridewereadoptedtotomodifythenaturalzeo-lite.ResultsshowtheprocessoforganicmatterisconsistentwiththeformulaofLangmuir,andthattheoptimalprocessofremovingorganicmattershouldbeobservedintheconditionsofzeolite20g/L,contacttime8h,particlesizeof36～65mesh,pH6.0～7.5,theactivationtemperature550℃andthe2.0mol/LCa2+solution,whichcanremoveorganicmatterfromruraldomesticsewagewithremovalrateof64.71%.Keywords:naturalzeolite;modification;organicmatter;ruraldomesticsewage;removalrate37ApplicationofSAPO-5MolecularSieveGAOJun-ping　(ShaanxiNormalUniversity,Xi'an710062;TheFourthMilitaryMedicalUniversity,Xi'an710032)WANGPing-an,CAOZhu-rong,HELi-qing　(TheFourthMilitaryMedicalUniversity,Xi'an710032)Abstract:ThesynthesisfactorsofSAPO-5molecularsievewerediscussed.TherecentprogressonthecatalysisisreviewedforbetterunderstandingtheinfluentialfactorstothesynthesisofSAPO-5andcatalysiscapabilityofMeSAPO-5.TheapplicationandfurtherresearchonSAPO-5includesMeSaPO-5molecularsieveinthefieldofshape-selectivity,materialpreparation,adsorptionandseparationanditscarrierareprospected.Keywords:SAPO-5molecularsieve;influencefactor;synthetictechnology41SeleniumDistributionandComprehensiveUtilizationXINGXiang,GUOJian-qiu　(KunmingUniversityofScienceandTechnology,Kunming650000)Abstract:Themaintypesofseleniumelementsinthedistributionwereindependentdeposits,seleni-um-associateddepositsinrichseleniumareaandpoorseleniumareas.Thedistributioninthehighse-leniumareasisbasicallyconsistentwiththatofhighseleniumandcoalareas,whichassumeslaminat-edorthestoveshapedistri