多效蒸发生化组合工艺处理甲硝唑工业废水方丽萍

306现代化工June201020106ModernChemicalIndustry多效蒸发-生化组合工艺处理甲硝唑工业废水方丽萍1,莫文艳1,孙　杰1,杨文斌2(1.中南民族大学催化材料科学教育部重点实验室,湖北武汉430074;2.武汉市森泰环保工程有限公司,湖北武汉430073):-,400m3/d。8。:,,。(CODCr)73mg/L,13.8mg/L,《》(GB8978—1996)。:;;;;A/O:X703.1　:A　:0253-4320(2010)06-0081-04Treatmentofmetronidazole-containingwastewaterbymulti-effectevaporationcombinedwithbiochemicalprocessFANGLi-ping1,MOWen-yan1,SUNJie1,YANGWen-bing2(1.KeyLaboratoryofCatalysisandMaterialsScienceofMinistryofEducation,South-CentralUniversityforNationalities,Wuhan430074,China;2.WuhanSentaiEnvironmentalProtectionEngineeringCompany,Wuhan430073,China)Abstract:Multi-effectevaporationcombiningwithbiochemicalprocessisdesignedandfoundedtotreatwastewaterfrommetronidazoleproductionwithwatertreatmentcapacityof400m3/d.Inordertogainfurtherinformationontherunningstatusofeachunit,eighttimesofsamplinganalysishavebeencarriedout.Therunningresultsshowthatitcanreachhighertreatmentefficiencyfortreatingthiskindofwastewater,andthetreatmentefficiencyofthetechnologyisstableandtolerableinshockload.ThemassconcentrationofaverageCODCr,ammonianitrogenineffluentatthefinaloutletare73mg/L,13.8mg/L,respectively.Thequalityofeffluentcancompletelymeettherequirementofclass1ofComprehensiveDischargeStandardofSewageGB8978—1996.Keywords:pharmaceuticalwastewater;multi-effectevaporation;ammonianitrogenstripping;hydrolyticacidification;A/Omethod　:2010-01-18　:(20807057);(2008CDB374)　:(1987-),,;(1975-),,,,,,[e-mail]。　　、。,30020%～30%70[1],,。,,,、,,,、、,。,1,。,“-”,,。1　、400m3/d,300m3/d,100m3/d,20%,320m3/d,1。《》(GB8978—1996)。1　pHCODCr/mg·L-1/mg·L-1/g·L-12～61200003401503～68500314496～9≤100≤15—·81·DOI:10.16606/j.cnki.issn0253-4320.2010.06.021现代化工3062　,,1。图1　废水处理工艺流程图[2],,,。“+/(A/O)”。、,,,[3-4]。A/O,,,NO-3,。CODCr。3　、、、、、A/O,2。3。2　/m3/h/m31#482.73002#162.4100——40035213.84002.9500.04003#802.94002349.3400A/OA993.7400A/OO18010.7162——3　　/kWCP52.2—6582.2pH—1—STCISTCI5001—DC51001—G33—8022.2KBGφ69-58060—　　(上接第80页)[1],,,.[J].,2007,21:77-82.[2]PopovVN.Carbonnanotubes:Propertiesandapplication[J].Ma-terialsScienceandEngineering,2004,43:61-102.[3]ParadiseM,GoswamiT.Carbonnanotubes:Productionandindustri-alapplications[J].MaterialsandDesign,2007,28:1477-1489.[4]ZengQun,LiZhenhua,ZhouYuhong.Synthesisandapplicationofcarbonnanotubes[J].JournalofNaturalGasChemistry,2006,16(3):235-246.[5],,,.[J].:,2008,47:4-8.[6]SeeCH,HarrisAT.Acomparisonofcarbonnanotubesynthesisinfixedandfluidisedbedreactors[J].ChemicalEngineeringJournal,2008,144(2):267-269.[7]DeJongKP,GeusJW.Carbonnanofibers:Catalyticsynthesisandapplications[J].CatalysisReviews,2000,42(4):481-510.[8]PhilippeR.AuroreMoranais,MassimilianoCorriasCatalytic,etal.Productionofcarbonnanotubesbyfluidized-bedCVD[J].Midi-PyreneesChemicalVaporDeposition,2007,13(9):447-457.[9].:,1327943A[P].2001-12-26.[10].:,454838A[P].2003-11-12.[11]ZavarukhinSG,KuvshinovGG.ThekineticmodelofformationofnanofibrouscarbonfromCH4-H2mixtureoverahigh-loadednickelcatalystwithconsiderationforthecatalyst[J].AppliedCatalysis,2004,272(1/2):219-227.[12],,,.[J].:,1996,35(1):61-66.[13],,,.[J].,2005,22(2):117-122.[14],,,.[J].,2001(2):151-153.[15]ZavarukhinSG,KuvshinovGG.Mathematicmodelingoftheprocessofproductionofnanofibrouscarbonfrommethaneinaniso-thermalreactorwithafixedbedoftheNi-Al2O3catalyst[J].ChemicalEngineeringJournal,2006,120(3):139-147.□·82·20106:-4　4.1　,。4。4　/mg·L-1/mS·cm-1CODCr/mg·L-1BOD5/mg·L-1pH1294285.7327205562.42.72198588.0419107124.73.33181589.6421607588.83.84287185.4340706132.63.45216093.1286604585.63.86231092.6308003080.04.47256597.6356104985.44.78357894.1311305292.14.2252890.76346325543.93.79:4,,2,CODCr,,,,。4.2　,,,。4.2.1　多效蒸发工艺,。,CODCr28660～42160mg/L,1815～3578mg/L,85.7～97.6mS/cm。CODCr、3632～6096mg/L,256～472mg/L,1.35～2.53mS/cm。CODCr87.2%,85.0%,97.0%。pH2.7～4.7,3.58。2,:CODCr、。B/C0.16,,。图2　多效蒸发中各污染物的处理效率和可生化性的变化:,。4.2.2　氨氮吹脱。,,。(NH+4)(NH3)(NH+4+OH-NH3+H2O)。pH,,。,256～472mg/L,0.687～1.650mS/cm,37.9～69.0mg/L,0.834～1.380mS/cm,85.7%～89.2%,pH10.7～12.2,pH11.5,pH8.3～9.5,8.8。,,pH,。。,CODCr。B/C0.16～0.23,0.21。4.2.3　水解酸化,,[5]。,CODCr568～852mg/L,CODCr349～560mg/L,28.2%～57.5%,44.2%。37.9～72.5mg/L22.0～29.3mg/L,35.9%～59.6%,47%。·83·现代化工3060.83～1.38mS/cm,0.672～0.975mS/cm,22.2%。pH5.2～6.9,6.1。图3　水解酸化中各污染物的处理效率和可生化性的变化3,CODCr、。B/C0.160.60,。4.2.4　A/O及二沉池A/O2,,、,,,[6]。A/ORN230%,/8∶1;0.91m3/(m2·h),10.2g/L。图4　A/O工艺中各污染物指标的处理效率/,A/O。CODCr349～560mg/L,CODCr44.0～97.6mg/L,CODCr72.7%～87.6%,81.5%。22.0～29.3mg/L,11.7～14.9mg/L。0.672～0.975mS/cm,0.390～0.540mS/cm。pH6.7～7.6,7.3。1—CODCr;2—图5　最终出水CODCr和氨氮的浓度45,CODCr、pH(GB8978—1996),。5　3∶1CODCr87%、87.2%、97%,1。,,A/O,2。“-”,,《》(GB8978—1996),。[1],,,.-[J].,2004,24(11):63-65.[2]ChenZiqian,ZhengHongfei,HeKaiyan,etal.Steady-stateexperi-mentalstudiesonamulti-effectthermalregenerationsolardesalina-tionunitwithhorizontaltubefallingfilmevaporation[J].Desalina-tion,2007,207:59-70.[3],.-SBR-[J].,2006,32(9):43-45.[4],,.O-A-O[J].,2002,22(11):47-52.[5],,.-SBR-[J].,2006,24(2):74-74.[6].HA-SBR[J].,2006,31(2):122-124.□·84·