ClO2三相催化氧化技术在硝基氯苯生产废水处理工程中的应用贾秀芹

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INDUSTRIALWATER&WASTEWATERVol.42No.6Dec.,2011ClO2(,211100)、、、(、),[1-2]。,、[3],(WAO)。[4]。、,。,,98%,CODCr70%,,,。1。、,,:、、、。,98%,CODCr70%,,。,、、。:;;;;:X703.1:A:%1009-2455(2011)06-0048-03ApplicationofClO2three-phasecatalyticoxidationtechnologyintreatmentofwastewaterfromnitrochlorobenzeneproductionJIAXiu-qin(SinopecNanjingEngineeringandConstructionIncorporation,Nanjing211100,China)Abstract:Wastewaterfromnitrochlorobenzeneanddinitrochlorobenzeneproductioncontainsmanyhard-degradableorganicmatters,suchas:nitrophenol,nitrochlorobenzene,dinitrochlorobenzene,nitrobenzeneandsoon.Usingcatalyticoxidationtechnologytotreatthesaidkindofwastewaterunderroomtemperatureandatmosphericpressurecouldobtaingoodeffect,theremovalratesofchromaandCODCrwereabove98%and70%respectively,andthebiodegradabilityofthewastewaterwasimproved.Themechanismofcatalyticoxidationtechnologytreatingwastewaterunderroomtemperatureandatmosphericpressurewaselaborated;besides,theprocessflow,typeselectionofmainequipments,operatingconditionandmaineconomicalandtechnicalindexeswereintroducedatthesametime.Keywords:roomtemperatureandatmosphericpressure;catalyticoxidation;nitrifiedwastewater;engineeringapplication;designparameters:2011-06-13;:2011-11-01·48·1Tab.1WastewaterqualityandtreatmentrequirementpHρ(CODCr)/(mg·L-1)ρ(Cl-)/(mg·L-1)/9~13≤1150162041276~9≤345≤501Fig.1Processflowofpretreatmentofwastwaterbycatalyticoxidation31%HCl99%NaClO3H2SO432%NaOH。,。,,2,4-、。、,、,、、、。2,,(Cu2+),,,ClO2,。,。ClO2。ClO2,。,O2,ClO2、O2、H2O(·OH),H,H,。,—NO2—Cl,,,。,ClO2,,,,。,,,[5]。33.1、22.5t/h,、、、,ρ(CODCr)≤630mg/L,ρ()≤100mg/L,pH9~13;6.25t/h,、、,ρ(CODCr)≤3000mg/L,ρ()≤200mg/L,0.4t/h,。。、,。35m3/h,1。3.21。、,、pH,98%pH3~5。,。pH,,,,,pH,。:ClO2·49·INDUSTRIALWATER&WASTEWATERVol.42No.6Dec.,20112Tab.2QualityindexesofeffluentwaterfromcatalyticoxidationpretreatmentpHρ(CODCr)/(mg·L-1)CODCr/%//%12.3593833213.2725173.25098.57.233.33.3.13,,。13m×5m×5.5m,325m3,32.5h。98%,pH3~5;2,,400mm,740r/min,4.0kW。2(11),30m3/h,50m,11kW。3.3.27kg/h,0.95kW;,26.5L/h,207kPa,0.029kW;NaClO3,26.5L/h,207kPa,0.029kW。3.3.325~30m3/min,4(,31),98.5m3/min,60kPa,160kW。3.3.42,,Φ3800mm×6000mm,5m。2.65m3/(m2·h),2h,65∶1。Φ10mm/Φ8mm/Φ5mm,600mm,———Φ3mm×5mm,45.4m3。,;,,。,,,。3.4200712,600m3,m(BOD5)/m(CODCr)0.4,。20113,2。3.5520,150,320,50。:30m×20m。:13.6/t,2/t,7/t,4/t,0.6/t。4,,、、、、。,:pH3~5,ClO220%~30%,65∶1。,98%,CODCr70%,。ClO2,,,。:[1],.[M].:,2001.[2],.[J].,1997,17(5):264-267.[3].[J].,1999,30(4):18-19.[4].[J].,2008,(5):89-90.[5],,,.ClO2[J].,2007,29(3):208-211.:(1971-),,,,,()jiaxq@snei.com.cn。·50·

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