废水半硝化脱氮新工艺雒怀庆

废水半硝化脱氮新工艺雒怀庆,　胡勇有(,　540641)　::(SHARON),,、、,。:;　;　;　SHARON:X703　　:A　　:1003-6504(2003)02-0054-03　　,,,,。,,,,,。、,,,。1　:NH4+※NO2-※NO3-※NO2-※N2(1),,,(1),,?:NH4+※※NO2-　(,)(2)NO2-※※N2　(,)(3):NH4+※HNO2※N2(4):(1971-),,。1975VoetHNO2-(Shortcutnitrification-denitrification)[1],-,HNO2,,(4)。,。:HNO2“”,,;,,,,。,NH4+※HNO3,,,。,,[2～3],,(SHARON),(2)-(4),。2　(SHARON)2.1　SHARON工艺简介SHARON(singlereactorhighactivityammoniumremovalovernitrite)DelftHellinga1997[4],,。,SHARON,,,,·54·　　26　2　20033DOI:10.19672/j.cnki.1003-6504.2003.02.022。,,:,SHARON:NH4++1.5O2※NO2-+H2O+2H+(,)(5)6NO2-+3CH3OH+3CO2※3N2+6HCO3-+3H2O(,)(6):NH4++2O2※NO3-+H2O+2H+(,)(7)6NO2-+5CH3OH+CO2※3N2+6HCO3-+7H2O(,)(8)SHARON25%40%,SHARON:,50%;,;,,。SHARON。2.2　影响亚硝酸积累的因素2.2.1　Mulder(Nitrobacter)(Nitrosomonas)[5],15℃,,15℃,。15～30℃,,。30℃,,HNO2。[6]20℃～30℃。HNO230～40℃[4]。2.2.2　pHpH,,pH,。,,[7]。pH,,。pH,,,,,pH,HNO2。,pH,pH7～8.5,6～7.5。pH7。pH8,HNO2,,HNO2,[6][8]。2.2.3　(FA)(FA),FA,[8],0.6mg/LFA,HNO2,HNO2。FA5mg/L,40mg/L。[9],/,(FA)。,,。HNO2FA,HNO2。2.2.4　,,Laanbroek,[10]。Hanaki,K.,DO0.5mg/L,[2]。0.5～1mg/L,80%,DO,3[11～13]。。2.2.5　。、。,,,。2.2.6　(HRT),(HRT)。SHARON,·55·　,SHARON(CSTR)[5]。,。,30℃,,“”,,。30℃,CSTR1d。,,::30～35℃,pH:7.5～8.5,:1mg/L,,:1d。2.3　SHARON工艺的存在的问题,;,,;,;,;,SHARON30～35℃。3　SHARON[14～15],。,,,,、。[][1]　VoetsJP,VansteanH,VerstraeteW,Removalofnitrogenfromhighlynitrogenouswastewaters.JournalofWaterPol-lution[J].ControlFederation,1975,47:394～398.[2]　HanakiK,WantswinC,OhgakiS.Nitrificationatlowlevelsofdissolvedoxygenwithoutorganicloadinginasuspended-growthreactor[J].WaterResearch.1990,24:297～302.[3]　KelsoBHL,SmithRV,LaughlinRJ,et.al.Dissimilatorynitratereductioninanaerobicsedimentsleadingtoriverni-triteaccumulation[J].AppliedandEnvironmentalMicrobi-ology,1997,63:4679～4685.[4]　VerstraeteW,PhilipsS.Nitrification-denitrificationproce-ssesandtechnologiesinnewcontexts[J].EnvironmentalPollution,1998(1),102:717～726.[5]　MulderJW,vanKempenR.N-removalbySHARON[J].WaterQualityInternational,1997,2:30～31.[6]　,,,.[J].(),2000,23(3):74～76.[7]　HellingaC,SchellenAAJC,MulderJW,et.al.TheSHARONprocess:Aninnovativemethodfornitrogenre-movalfromammonium-richwastewater[J].WaterScienceandtechnology,1998,37(9):135～142.[8]　,,.[J].,1999,25(7):37～39.[9]　,./[J].,2001,21(1):79～83.[10]　LaanbroekHJ,GerardsS.CompetitionforlimitingamountsofoxygenbetweenNitrosomonaseuropaeaandNitrobactorwinogradskigrowninmixedcontinuouscul-tures[J].ArchivesofMicrobiology.1993,159:453～459.[11]　,,,.[J].,2000,32(1):1～3.[12]　,,,.[J].,2000,32(1):4～7.[13]　,,,.[J].,2000,16(4):1～4.[14]　LogemannS,SchantlJ,BijvankS,etal.Molecularmicro-bialdiversityinanitrifyingreactorsystemwithoutsludgeretention[J].FEMSMicrobiologyEcology,1998,27:239～249.[15]　,,.[J].,2002,25(2):35～36.(:2002-04-23)(上接第50页)[][1]　DR/890PortableDataloggingColorimeterInstrumentMan-ual,HachCompany[M].USA,1999.[2]　.-[M].:,1998.[3]　.()[M].:,1988.(:2002-08-19)·56·　　26　2　20033HydroxideFreeRadical:ItsFormationandApplicationinWaterTreatmentLIUDong-lian,HUANGYan-e(DepartmentofChemistry,TianjinTeachersCollege,Tienjin063000)Abstract:Thepowerfuloxidizingcapacityofhydroxidefreeradical(?OX)isdescribedwithmoreattentionspaidtofentonprocess,nano-sizedphotocatalystprocess,electrochemicalcatalyticdegrada-tionandultrasonicdegradation.Thispaperalsoreviews?OXandtherelatedadvancedoxidationtechnologiesandthedevelopmentofsynergeticactionofmultipleoxidativedegradationsinprospect.Keywords:hydroxidefreeradical(?OX);advancedoxidationtechnologies;oxidativedegradation;organicpollutant;combina-tionofwatertreatmentTreatmentofEffluentsfromPureDimethylEtherProductionUsingEngineeringBacteriaLIEr-yang,ZhengXiao-lin,SHILo-wen(JiangsuInstituteofPetrochemicalTechnology,Changzhou213016)Abstract:ThispaperintroducestheengineeringbacteriaLEY7,whichareconstructedbymeansofmultiple-genes-transformedspheroplastusePseudomonassp.D3asreceptorsandBacilluslentus3RM2,Pseudomonassp.W1,andPseudomonassp.W2asdonors.Thebacteriacansimultaneouslydegradefourcompoundsinthewastewaterofadimethylether-producingfactorywithCODre-movalabove90%.Keywords:engineeringbacteria;wastewaterofchemicalindustry;degradation;dimethyletherDevelopinganPortableInstrumentforWaterAnalysisYANGHai,LUXiao-hua,CHENGuang-dong(ResearchInstituteofEnvironmentalScience,HuazhongUniversityofScienceandTechnology,Wuhan430074)Abstract:Aportableandeasy-to-usewateranalyzerbasedonphotome-trywasdesignedforfieldwatertestingwiththewiderangeofparame-tersincludingCOD,ammonia,colority,turbidity,phosphates,etc.Techniquessuchmonochromaticcoollightsource,photoelectricsensoranddataacquisition/disposalhavebeenappliedwithasingle-chipmi-crocomputerasacorecontroller.Keywords:photometry;wateranalysis;portableinstrumentAnOverviewofEnvironmentalBiotechnologyTIANYun,LUXiang-yang(CollegeofScience,HunanAgriculturalUniversity,Changsha410128)Abstract:Thispaperdescribesthenewinterdisciplinarytechnologyenvironmentalbiotechnologywithafocusonadvancesandtrendinresearchesandapplication.Keywords:environmentalbiotechnology;supermicrobe;biologicalplastics;biologicalpesticide;EMbiotechnology;biologicalfertiliz-erAReviewofSHARONProce