含氰废水加压水解脱氰张振锋

1996(,315207)〔cN〕0.smg/L,,.,,1994,〔CN〕。.35mg/L.t,,.CyanogenRemovalofPressurizedHydrolysisforCyanogenWastewaterZhangZhenduo(ZhenhaiPet,hemicalCdrPoartl’on,Ltd.315207)Abstr8CtAneffeetivemethodtoremovethediffieultdeeomPositioneyanogenineyanogenwastewater15thepressurizedhydrolysis.Itwasbasedonthetheorythatthe[CN〕anbelow0.smg/L,butit15diffieulttoreaehthisremovallevel.TheZhenhaiPetroehemiealCor-poration,Ltdreaehedthe[CN〕about0.35mg/Lsinee1994bystudyandresearehfordeeade.Keywords:Cyanideeontainingwastewater,Hydrolysis,Influeneingfaetors.,。1947Dobson〔`,,lBondgond〔2,1948。1832〔,、`,。1972`’`〕。80,。AES。Robey〔,,、’3,。7080。。〔CN〕,3~15mg/L,0.5~lmg/L,0.smg/L,99.99%,(:19950727)2〔CN〕(i000mg/L)。,。,1989。,,。,。,,,,:1.11,Midle:Sehindewolf〔`4、,,,170℃。1。1/℃℃MidlercShindewolfffMidlercShideolfff/11111130001.515.517.33311140002.22210.515.77711150003.13.5555511170008.511.00000111800011.016。22222Y,%;X,℃。LZ,、。,0.7~1.IMaP,。1·3pH。1,pH。15[〕pH〔CNj。pH12·609.30eN,pH,。,l6[〕,;1[〕。,pH。L4:CN+ZHZO~HCOO+NH:,,:dcdtCK1994(2160)2。2()oCIn~=tCN//////CCCN/mg·L,/minnn℃℃MPaaa333711177.8444176.40000.900555222~111844478.5777176.15550.913555111~0.555922290.2999175。9990.88444O。555977787.4888175.0000.915552,,,,。:Y=29.040.16X:C。;C;t。MidlerK=0.183/min(180℃)l[,(t-4omin、Co=16omg/L、C=0.smg/L、183℃)K0.144/min0.14/min。CN:Y~0.15eooZ1996:Y,%;X,min。:,;;【CN〕1~0.smg/L,CN92%,96.slmin;[CN〕0.5,97%,85.92min。1.5、。Midler14[〕,:de_dZeJJ;esatdX`PecletD/UL。Peclet,,,,,【CN〕。,,,,CN(「CN〕0.smg/L),60%,。1.6,170℃,Midlerl[’〕,RCNR,。170℃,,。,。Sehindewolf[g〕,1800C、0.62MPa,[CNj15mg/LRCN,,2030min。,,iN、Fe、CN-Ca。,,,。〔,:(1)[CN〕3omg/L。(2)。iNCN`〔Ni(CN)`〕Ni’+NH3NH[Ni(NH:)6〕’-J/\。(3)Ca、MgFe。(4)COD(l000mg/L)。(5)S、S。(6),S,。.(7)Ca,。2t,。pHlo.8~12.5,1.oMPa183℃,4omin,1618t/h。3。3mg/LpHCNNiVNH:CODBODDD5.6~9160270841004000750600006~90.522074000330067054000,,COHCOCaZ,pHCaCO。,、,,。(20t/h),,。,Ca+2,pH,CNcH3、Ni。,,[CN〕3mg/L,、。22.101%,。,3ot/h,1993,CN,,,。,:(1),Ca,+。,。,CaZ+,55,pH,,70%iN,。CaZ+pH,pH)10,70~90,C,CaZ+80,:CaZ++COCaCO3(2),,1995,t.COHCO,,18[〕CaZ+。CaCO3K,=2.gx10g20[〕,cacO3ea,+2.ismg/L,CO3·23mg/L,Ca’+25omg/L,Ca,+,CHCO,Ca+2,COHCO。19953:CaZ+141.718.smg/L,CaZ+25·6o·smg/L,CaZ+90%。(3)3.SMPaIMPa,,。,3.SMPa1.6MPa,。(4),。,,(),90%。(5),,。(6),。,、,2。,,。1。NaOH1.22.2.21,170℃;180℃170℃,CN。180℃170℃,175℃。.2.22,。,CN,,63102min。85~90min。19962·2·3pH,pHCN,,。10~10.5,,pH10.5。.2.24,,,0.gMPa。3a.。3omg/L,CN.0smg/L,.035mg/L(、),97%,。b.:85~90min;175,C,pH10.5;0.gMPa。。.,。d.,。,,Caz。e.。f.,,。,、pH、,。1.Dobson,J.G,Proeeedingsof3rdIndustrialWasteConferenee,PurdueUniversety1977,209~227.2.Bloodgood,D.E.etal,Proeeedingsof3rdIndus-trialWasteConferenee,PurdueUniversity1947,196~206.3.Geiger·Ph.L,Ann.Pharmaeie,l,44(1832).4.Pelouze,J.P,Ann.Pharmaeie,2,84(1832).5.Kuhn,A.T,et.al.OberflaeeheSarf,18(5),119(1977).6·okugawa,M.PPM,8(8),58(1977).7.Wolfbeiss,E.andcShindewolf,V,Cheming-Teeh,45(1),63(1976).8.Hoerth,J,cShinelewolf,V,ChemingTeeh,45,641(1973).9.Sehindewolf,V,ChemingTeeh,44,682(1972).10.cShindewolf,V,V.5.Patent,3,945,919(1976).11.Yamada,S,et.al,JaP.Patent,76,84,144(1976).12.Robey,H.L,et.al,PlatingandSurfaeeFinish-ing70(6)(1983).13.Robey,H.L,etal,69thAESAnnualTeehinealoCntereneeProeeedin(1982).14.M.Midler,Jr,et.al,Environ.Prog,11(4)(1992).15...1989,10(6).16..,1979.17....1981,12·18...1993,7.19...,1994,12.20...1979,3.