含氰废水处理的现状与对策杜龙弟

.12·1994(),,。,。PresentSituationandCountermeasuresonTreatmentofCyanideeontainingWastewaterDuLongdiYuZhengzheZhaoLianrongZhuTingfang(Daqi,9pet,oche、calCo,Ple,)AbstraetPresentLsituationandexistingproblemsoftreatentingwastewaterinDaqingPetroehemiealComplexareofeyanideeontaindiseusseddifferentkindsofmethodsfortreatmentofeyanideeotainingtigated.Engineeringfeasibilityoftreatmentofhighwastewaterareittveseoneentrationeontaiing15studiedwastewaterbyheavymetalioneatalysedairoxidationeyanideProcesemphatieally.Runningproblemsarediseussed,andaPProPriatenleaSUreSaresuggestedineyanideeontainingwastewatertreatmentPlant.=、lHJ,。“”,CNo.smg/L。,。。、,、、。、,。14t40mg/L。,,CN,,。-。:。_(CN),。、,·NaSCN。-2.13.UNOX()。、。,、、、、。NaOHpHn。,,,.。CN(),CN(、)(HO:),。,:,CN(1991,CN9.smg/L,342mg/L),(CNZmg/L);,(COD、CN),。,。、(),,:、、〔1〕。—;(、、、、)、;、、;(CNmg/L)。,,,,,、、。,l〔1〕。、,111111000mg/I100~1000mLLL100mI,,}199:1。、2〕,。,。,:C12+HOHOCI+HCICN+HCIOCNCI+OH(2)CNCI+OH-Cl+HOCN(3)pH,pH,pH10。CNCI(.008mg/L),HOCNCN。pH,。,HOCN:ZCNO+30CI+H:OZCO:+N:3CI+ZOH-pH,,pH7.58。,,pH,。:pH10,10m,pH78,30min。CN50omg/L,,,CNCI,。,,。,,,。2.〔2、3〕,100℃200250℃:RCN+ZH:ONH3+HC00RR。200℃,,COH。。,,,。,,,。,。,,(20003000mL,315mg/L)。,,。3。,,。。,,、。()、,。」,,CN〔4,。NiZ+、CoZ、Cuz+、F““CN〔5〕。,。〔CuZ+〕602·15·mg/L,[CN〕100mg/L,:,〔C〕lmg/L,〔CN〕o.smg/L,。。1t/h,2。,CN。.17t/。。D.C.Hoffoa。,,(〔4〕:,CNCO。、:_.1。。、。_、J,-~)2CNO+ZH:OHCO+NH3HCO+OH-CO;+H:OZCuZ++ZOH+CO;-CuC03·Cu(OH):(),。,。,,。(CN1001000mg/L),。:Cu“,CN,K0.lmin’。,CNCN,。,,,。CN580mg/L,50min,CN4.6mg/L,CN99.2%。〔6〕,,K0.0053’。,CN20。,,NH3)。`’,、。、,。。,,(、、、)。。:。()(8090t/h),、、、、。。CNSCN,TD;TDZ〔7〕。,TD,TD:,。,〔CN〕Zomg/L,CODer2000mg/L,SCN〕100mg/L,〔CN〕0.smg/L,CODer150mg/L,SCN-。TD:、TD:CN、sCN。1994(100mg/L,40mg/L)。k,A/O,。〔TN〕25omg/L,A/O,〔NHN〕25mg/L,。()1988,:COD。COD55Omg/L,960mg/L(1990,),,,,CN。〔CN〕Zmg/L,5.4mg/L。,,,COD、CN。COD、CN-,,。COD、CN,,—。,。,,。1981。,〔8〕。:YJH、’YJR、YJR。,。COD、CN2。2COD.CN_:”……__(%,…N…({N{“`。58}38”…“3·2…“·6~2,7`…76·6,`6!“93…“9·0{9·8」`·69182·8`324{“2)68·915·6.`·`2…`·6878{.33`{62·0}7·8}2·`2….6,’。,COD、CN,COD70%,CN80%。。,。、,,:,;(22).22.41994l2……{(mg/L)}(%)」(%)(%)J()’(g/L)223~31322~327412~417920~9271017~1026112~117122~159.94301.78803.29000.10900.55300.11201.88802.52692.08500.62800.98500.02620。15700.0228044630.6215oqà1064OJ79707671797673,11ǎhsōlJ.……bnCA/,1RbCJ`,l3bA1`1UJ7,.……bOOJ22D`.1,1ǎù0nJqdōJh4`nUbQùù`QU563431/3817233!((g/L)(%)(g/L)1359103226030078bùa2OOA9148603cooOq`O`,`,ahùdùJ`6ōJOOOOJù1。?/.345.448.357.21114455422516840ù`nù5nU7Rù223~31322~327412~417920、9271016~1026112~1171229~1510、n。4.1991、1992,、,,,。..J..”,..`.......,,,.,.............(16),、,、;,、,,CN、COD。..1991,11(2),32...,198.83.11(4),4.5.6.7。23。8.M,Mieler.Enviromenalprogress.1992,251.D.C.Hoffman.Plating,1973,60(2),157...1987,34(1),58...1989,10(6),2...1988,No.4,..