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ReconstructionofthehighlyconcentratedacidwashingwastewatertreatmentprojectatasteelproductfactoryTangZhongde1,WeiShifan1,YaoYi2(1.GuizhouProvinceArchitecturalDesign&ResearchInstitute,Guiyang550002,China;2.DepartmentofResourcesandEnvironmentalEngineering,GuilinUniversityofTechnology,Guilin541004,China)1,1,2(1.,550002;2.,541004)[],/。,《》(GB8978—1996),。[];;[]X703.1[]B[]1005-829X(2010)09-0084-03Abstract:Basedontheanalysisofexistingproblems,suchashighoperationalcost,difficultseparationofsedi-mentaryintheoriginalacidwashingwastewatertreatmentprocess,etc.atasteelproductfactory,amodifiedprocessoftwo-stagecounteract/aerationoxidationhasbeenputforward.TheoperationpracticeindicatesthattheeffluentqualityissuperiortothefirstclassofIntegratedWastewaterDischargeStandard(GB8978—1996),andalloftheeffluentisreusedaswashingwaterinthefactory.Keywords:acidwashingwastewater;technologicalreconstruction;aerationoxidation,,3d1,20m3,,、,pH,、。〔1〕。,,,;,,,。,,。,,。《》(GB8978—1996)。1。,1。1,CODSS,pH。22.1,1pHCOD/(mg·L-1)SS/(mg·L-1)/(mg·L-1)120050013000535402500:3d。30920109IndustrialWaterTreatmentVol.30No.9Sep.,201084——2010-09,30(9):(1),;(2),、;(3),,;(4)《》(GB8978—1996)。2.21。3、2、1、1,1.5m×5.0m×1.8m、2.0m×2.0m×3.5m、3.0m×4.0m×2.5m、3.0m×4.0m×2.5m。,。,:(1),。,,1,,,,pH,,,。(2)Fe2+,pH。2.3,、。、。,,2。、。(1),,,,,1,,。,。(2),。、,,Fe(OH)2Fe(OH)3Fe(OH)3,,Fe(OH)3,〔2〕:2H++Ca(OH)2→Ca2++2H2OFe2++Ca(OH)2→Fe(OH)2+Ca2+4Fe(OH)2+O2+2H2O→Fe(OH)3↓pH5.5,Fe(OH)3;pH12,Fe(OH)3;pH7.0~7.5,Fe2+Fe3+,Fe(OH)3。,,,,。Fe2+Fe3+,,。。,:85——2010-09,30(9)(3),:Fe(OH)3、CaSO4,、、,(≤10mg/L),,,。33.1212.0m×2.0m×3.7m,16m3,1。2(11),25QW8-22-1.1,12m3/h,15m,1.1kW。3.2311.5m×5.0m×3.0m,20m3,,。2(11),25AFB\FB-16,3.6m3/h,15m,1.1kW。3.332,,。,215mm,18,0.25~0.55m2。3(21),65AFB\FB-16A,26.8m3/h,8m,3kW。3.41,,1.5m×1.0m×1.5m,2.0m3。1,25AFB\FB-13,3.6m3/h,13m,1.1kW。3.51,,D1.0m×1.2m。41,2。2,《》(GB8978—1996),《》(GB/T18920—2002)、,。5(1)4.0,1.5,2.5。(2)12.0/m3,1.0/m3,10.5/m3,0.5/m3。6。,,,。:(1),,,,。(2),,,,;、、1.05~1.4。40%~50%,5%~10%Ca(OH)2。,,,。(3)pH7.0~7.5,Fe2+Fe3+。,。,,,。[][1],.[J].,1999(2):55-58.[2],.[J].,1999,(1):41-42.[3],,,.[J].,2005,25(2):38-40.2pHCOD/(mg·L-1)SS/(mg·L-1)/(mg·L-1)6~925~3520~4020~60[](1974—),1999,,,、。:0851-5573786,E-mail:tangzhongde@sina.com。[]2010-04-15()86——
本文标题:钢厂高浓度酸洗废水处理工程改造实例唐忠德
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