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21320086POLLUTIONCONTROLTECHNOLOGYVol.21,No.3Jun.,2008CAST1, 2(1.睢宁县环境保护局,江苏睢宁 221200; 2.中共睢宁县纪委,江苏睢宁 221200) :CAST,,BOD5960~1250mg/L,CODcr2250~2780mg/L,《》(GB8978—1996)。:;CAST;;:X703.1;X794 :AApplicationofCASTintheTreatmentofTanneryWastewaterLIUHong-yu1, SONGMeng2(1.SuiningEnvironmentalProtectionBureau,Suining,Jiangsu221200,China;2.CommitteeofDisciplineProsecutionSuiningCounty,Suining,Jiangsu221200,China)Abstract:ThispaperintroducestheapplicationofCASTintreatingthetannerywastewater.Theresultsofoperationindicatesthatwhentheintakeofwatergetsto960to1250mg/L,CODcrto2250to2780mg/L,thedischargecanreachthesecondclassaccordingtotheStandardofWastewaterTreatmentPlant(GB8978—1996).Keywords:tanningwastewater;CASTprocess;wastewatertreatment;application:2007-08-02;:2007-09-20:(1976—),,,,,,。 12,。,,,,,、、,,,,[1]。1 、,、、,、、、、、、、、,,(1),。1 CODcr/(mg·L-1)BOD5/(mg·L-1)SS/(mg·L-1)TCr/(mg·L-1)S2-/(mg·L-1)NH3-N/(mg·L-1)pH2500~30001000~15001200~300060~100100~20050~908.5~10.5 ,500~600m3,5%,10%。1。2 2.1 设计原则(1),,,,《》(GB8978—1996),CODcr≤300mg/L,BOD5≤100mg/L,SS≤150mg/L,S2-≤1.0mg/L,TCr≤1.5mg/L,NH3-N≤15mg/L[2]。(2),,。(3),,·86 ·.CAST213,,。(4),,,。(5),,。(6),[3]。(7),。2.2 工艺流程BOD5/CODcr0.30~0.55,。S2-Cr3+,。,,[4],,COD、SS,,CAST,。1。1 2.3 工艺说明Cr3+,Cr6+,,。,,S2-Cr3+,。,Ca(OH)2,Cr3+OH-,Cr(OH)3。,,、、。FeSO4,Fe2++S2-=FeS,PAM,[5]。,,CAST。SBR,、。CAST、,,-、、、-,。,,,,,,,、、pH,,;,,、、,,,,,、,5mg/L[6]。3 3.1 集水池、曝气调节池,(HRT)12h,10m×10m×3.5m,3m×3m×3.5m,,S2-。3.2 反应池,4,FeSO4、PAC、Ca(OH)2,10min,1.5m×1.5m×2.5m,1。3.3 斜管沉淀池,4,(HRT)30min,2m×5m×3.5m6m20086.CAST·87 ·×5m×3.5m,PVC。3.4 CAST池:BOD5/MLSS0.10~0.15kg/(kg·d),6h,4h,HRT24h。2,46m×15m×5.5m。,:RE-200,3,21。CAST、、、、PLC[7]。4 ,5,。CODcr、BOD5、S2-、TCr90%,《》(GB8978—1996)(2)。2 mg/L CODcrBOD5S2-TCrpHCODcrBOD5S2-TCrpH2225096030129.5235650.750.988.532780125058258.5265780.821.028.442650115052239.0263720.951.257.652350105040198.8242630.650.868.062730118062277.8273840.731.188.272580107548188.3255680.861.057.8: 2,,。,,CAST。5 175,600m2。45.5kW,39.8kW。1.52/t,0.05/t、0.82/t、0.55/t,0.10/t。6 (1),COD,COD50%,,。(2)CAST,,,CODcr、BOD5、S2-、TCr90%,。(3)CAST,,,,。(4)-CAST,,,,,,,,,,。[][1] .[J].[s.1.]:[s.n.],2004.[2] .()[M].:,1994.[3] .[J].[],1992,V(N):x.[4] .--CAST[J].[],2002,V(N):x.[5] .[J].[],1999,V(N):x.[6] .+Fenton[J].[],1999,V(N):x.[7] .CAST[J].[],2005,V(N):x.
本文标题:CAST工艺在制革废水处理中的应用刘宏宇
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