刘艳娟1 郭浩磊2 曾正中2 郝玉翠1(1.,063000;2.,730000):采用静态和动态实验研究海绵铁预处理焦化废水。静态实验在海绵铁粒径、投加量、废水pH值和反应时间4个方面研究对处理效果的影响,结果表明,海绵铁处理焦化废水最适条件:粒径为0.5~1mm、投加量为20g,pH为6,反应时间为60min。动态实验研究海绵铁在不同水力负荷下对废水色度、氨氮、COD的去除率,结果表明:水力负荷越小,出水水质越好,且明显改善焦化废水的可生化性,从原水的0.19提高到出水的0.38。海绵铁可作为焦化废水的一种有效的预处理方法。:海绵铁;焦化废水;预处理;可生化性;水力负荷STUDYONTHEPRETREATMENTOFCOKINGWASTEWATERBYSPONGEIRONLiuYanjuan1 GuoHaolei2 ZengZhengzhong2 HaoYucui1(1.DepartmentofEnvironmentalChemicalEngineering,TangshanCollege,Tangshan063000,China;2.KeyLaboratoryofWesternEnvironmentUnderMinistryofEducation,LanzhouUniversity,Lanzhou730000,China)Abstract:Staticanddynamictestswereusedtostudypretreatmentofcokingwastewaterbyspongeiron.Theeffectsofparticlesizedosageofspongeiron,pHofthewastewaterandreactiontimeonthetreatingeffectivenesswereresearchedbystatictest.Theresultshowedthattheoptimalconditionswere:particlesize0.5~1mm,dosage20g,pH6andreactiontime60min.Theremovalratesofchroma,NH3-NandCODofthewastewaterbyspongeironunderdifferenthydraulicloadswerealsostudiedbydynamictest.Theresultshowedthatthelowerthehydraulicload,thebetterthequalityoftheeffluent,andthebio-degradabilityofthewastewaterwasimprovedfrom0.19(influent)to0.38(effluent).Itwaseffectivemethodtopretreatthecokingwastewaterbyspongeiron.Keywords:spongeiron;cokingwastewater;pretreatment;biodegradability;hydraulicloading0 、、,[1]。,,、COD。,,。、COD,。,。[2],。,。,,。,、、、、,、。1。1 [3]/%(C)/%/(g·cm-3)/(g·cm-3)/mm903~42.3~2.781.7~1.8880.5~3.01 1.1 废水水质8 20102281DOI:10.13205/j.hjgc.2010.01.007,2。2 ρ(BOD5)/(mg·L-1)ρ(COD)/(mg·L-1)ρ(SS)/(mg·L-1)ρ(NH3-N)/(mg·L-1)pH/1096~11975478~5983220~24012074~131856.4~7.3350~5501.2 静态实验方法,,120r/min,30min,,[4],。1.3 动态实验方法36mm,400mm,()20mm。1.23,1.57,2.36,4.72m3/(m2·d),。1。1—;2—;3—;4—1 2 2.1 静态实验2.1.1 20g,60min,2。2,。0.5mm,、COD、85%、30%、22%。,,、、。,,,,,,。,,,,。,0.5~1.0mm。2 2.1.2 0.5~1.0mm,20g,。3。3 3,。40min,80%,60minCOD32%28%。,,。,。,,COD、、,。,60min。2.1.3 0.5~1.0mm,60min,,,4。4,,COD、、。20g,74%、29%、18%。,20g。,,Fe2+,。9 201022814 2.1.4 pHpH4、6、8、10、12,,,5。5 pH5,NH3-N,pH,NH3-N。:O2+2H2O+4e※4OH-;:NH+4+2O2※NO-3+2H++H2O。NH3-NNO-3pH,pH,NH3-N,pH12,NH3-N67%。,COD。,pH。,,,0.190.38。2.2 动态实验6。,。1.23m3/(m2·d),COD、46.9%、37.2%90%。,,,,,,1m3/(m2·d)。6 2.3 海绵铁板结机理分析,,,,,,,,,。2.3.1 Fe3+PO3-4,,,[5]。2.3.2 ,,,。,,,,,。3 1),、、、。,pH6,0.5~1.0mm,20g,60min,COD。:1.23m3/(m2·d),COD、46.9%、37.2%90%。,1m3/(m2·d)。2),,0.190.38,、。,。(13)10 2010228180mm,。,3,2。,2。0.6~0.8,,2000~3000mg/L。2.7 清水池,,。2m×2m,13m3。0.8m。,。,。2.8 污泥、废气和沼气处理设备,70%~80%,。。、。,。3 200871。,-,15d,,,,,,。20088,2,,COD,10COD60%,COD700mg/L,COD50mg/L。102。,,。COD,,,。2 200810ρ(COD)/(mg·L-1)ρ(BOD5)/(mg·L-1)ρ(NH3-N)/(mg·L-1)ρ(TN)/(mg·L-1)ρ(TOC)/(mg·L-1)ρ(SS)/(mg·L-1)pH/℃40~6010~150.8~24~86~1010~307.5~8.228~324 ,EC。,,,,。[1] ,.[J].,2007,17(12):178-180.[2] ,,,.[J].,2007,27(12):32-35.[3] ,,.[J].,2007,1(8):66-69. 150090 E-mail han13946003379@163.com2009-01-16(10)[1] WangBo.Electrochemicaloxidationofrefractoryorganicsinthecokingwastewaterandchemicaloxygendemand(COD)removalunderextremelymildconditions[J].IndEngChemRes,2008,47(21):8478-8483.[2] ,.[J].,2004,3(1):1-4.[3] ,.[J].,2004,20(3):30-32.[4] ,,.[J].,2007,2(34):11-13.[5] ,,.[J].,2007,20(2):47-48. 063000 38 E-mail juan1809@163.com2009-01-0813 20102281