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1.
IntroductionThevolatileorganiccompounds (VOCs)isoneofthefivemajorprimarygasouspollutants(particulates,SOx ,NOx ,VOCs,CO) ,inwhich 31VOCspollutantsincludingbenzene,acroleinandaliphatic ,aromatichalogenatedhydrocarbonsarelistedinall 1 2 9prioritypollutantsbytheEnv…  相似文献   

2.
IntroductionNowSO2 istheoneofmaingaspollutantsandthemaincauseofacidrainproblem .SO2removalby pulsecoronadischargeisanewDe SO2 techniquedevelopedduringlastten years(Masuda ,1 993;Mizuno ,1 986 ;Dinelli,1 990 ) .SO2 influegasisoxidizedbyactivatedradical(suchasOH ,HO2 ,NH2 ,O)w…  相似文献   

3.
IntroductionBecauseofthehighoxidationpotentialofozone(O3) ,ozonationhasbeenregardedasapromisingmethodfordrinkingandwastewatertreatment.AwiderangeoforganicpollutantsinwatercanbedegradedbyO3,O3combinedwithH2 O2 orUVlight,whichareknownasAdvancedChemicalOxidati…  相似文献   

4.
IntroductionTiO2photocatalysishadbeenthefocusofnumerousinvestigationsinrecentyears,particularlyowingtoitsapplicationforthecompletemineralizationofundesirableorganiccontaminantstoCO2,H2Oandinorganicconstituent(Hoffmann,1995).However,photooxidationwasalmostno…  相似文献   

5.
NewISOStandardsISO(InternationalOrganizationforStandardization)haspublishedanewterminologystandard -14050,En vironmentalmanagement -Vocabulary.Itexplains106termsanddefinitionsusedinISO's14000seriesstan dards.ISOhasalsopublisheditsfirsttechnicalspecifica…  相似文献   

6.
IntroductionNitrousoxide (N2 O)isaveryimportantgreenhousegasintheatmosphere.InterestintheincreaseofatmosphericN2 OhasbeenrecentlystimulatedbytheunderstandingthatN2 Ogasplaysanimportantroleinthechemistryandozonelayerdestructionofthestratosphere.Theradiativ…  相似文献   

7.
IntroductionThe 2 9thInternationalOlympicGamewillbeheldinBeijingin 2 0 0 8.TheOlympicGameshavenotbeenheldindevelopingcountriessincetheMexicoOlympicGamesin 1968.ItisexceptionallysignificanttoholdthegreatgameinBeijing,adenselypopulatedandfastgrowingmegalopoliswi…  相似文献   

8.
Impacts of ozone on the biomass and yield of rice in open-top chambers   总被引:4,自引:0,他引:4  
IntroductionOzone(O3)formedasphotochemicalsmogisthemostdangerandwidespreadcomponentintheairpollution.Nowadays,thetypicaldailymaximumO3concentrationsinurbansuburbanandareashavereached100~400nl/Land50~120nl/L,respectively.Undercertainmeteorologicalconditionrural…  相似文献   

9.
IntroductionCokingwastewater,especiallythecokingresidualammoniawater(ahugevolumeandheavypollutedwastewaterincoking)isahighconcentrationorganicindustrywastewaterofdifficultforthebiochemistrydegradation.Ofwhich,BOD5/CODisusuallyabout30%.Atpresent,bythetreatm…  相似文献   

10.
IntroductionThebrassylicacidmanufacturingwastewatercontainshighchemicaloxygendemand(COD)concentration3000—12000mg/LanditsBOD5/CODisamong04—05Meanwhilethewastewatercontainshighsulphateconcentrationabout13000mg/LanditspHvalueisonly1—2Achemicalcompanyappliedneutrali…  相似文献   

11.
IntroductionInChina ,withtherapideconomicdevelopmentandunprecedentedchangesinlanduse ,artificialemissionofNOxandVOCshasincreasedsignificantlytothedoubleduringthepast 11yearsandreachesthesamelevelasUSAandEurope(Elliott,1997) .Asaresult,theground levelO3concent…  相似文献   

12.
TwofeedbackloopscontrolwaterresourceconsumptionwithinYaobaOasis.OnefeedbacklooptakeseffectwhentheYaobacommunityhasperceivedthereductionofwaterresources.Thesecondtakeseffectwhenthedeteriorationofwaterqualityisperceived .However,thesetwofeedbackloopsaren…  相似文献   

13.
IntroductionInrecentyears,therehasbeenanincreasingconcernworldwideforairpollutioncausedbyindustrialemissions.Sulfuroxidesandnitrogenoxides(SOxandNOx)aretwomainatmosphericpollutants,whicharegenerallybelievedtobemajorprecursorsofacidrainanddepletetheozon…  相似文献   

14.
IntroductionThephysicochemicalprofileoforganiccompoundslargelydeterminestheirdistributionbetweenenvironmentalmedia .Fortheenvironmentalbehavioroforganiccontaminants,theoctanol waterpartitioncoefficient(KOW)ismoresignificant.KOWhasbeenwidelyrelatedtobioc…  相似文献   

15.
利用CO_2采油的技术、环境和经济分析金光宇Technical,EnvironmentalandEconomicAnalysisonOilExtractionUsingCO_2¥JinGuangyuAbstract:IncreaseofCO2andot...  相似文献   

16.
IntroductionAtmosphericnitrousoxide (N2 O)isaveryradioactivelyactivegreenhousegas,alsocontributingtothedepletionofozonelayerofstratosphere .AtmosphericN2 Omainlyoriginatedfromnitrificationanddenitrificationinterrestrialecosystems.Grasslandecosystem ,accoun…  相似文献   

17.
IntroductionThetransportandfateofHOCsintheenvironmentishighlydependentupontheirsorptivebehavioronsoilandsediment.ManystudieshavebeenreportedthatthepredominantsorbentofHOCsinsoil sedimentisnormallythesoil sedimentorganicmatter (SOM)fraction ,andthesorptio…  相似文献   

18.
Some questions about landscape modlling   总被引:1,自引:0,他引:1  
ModellingecosystemshasbeendonebymanypeoplesincetheinitiallaunchgivenbyOdum (Odum ,1983) .Butmodellingthefunctioningoflandscapesisnotsofrequentandlandscapeecologyissoyoungthatthetypeofmodelwhichhastobechosenisnotalwaysevident.Afirstconstraintisthatthemodelm…  相似文献   

19.
IntroductionCoalisanimportantfuelinChina .LargequantitiesofSO2 producedincoalcombustionhavecausedtheairpollutionandfurthertheformationofacidraininsomeareas,soreducingtheSO2emissionisveryimportantinChina .Generally ,calciumcompoundsareusedassulfurfixatived…  相似文献   

20.
Experimental and mechanism studies on seawater flue gas desulfurization   总被引:7,自引:0,他引:7  
IntroductionInstallationofscrubbersortheuseoflowsulfur containingcoalaretwooptionsusedbypowerplantstoreduceSO2 emissions.ThemajorityofpowerplantscontrolSO2 emissionsusinglimebasedscrubbing ,althoughthisdesulfurizationprocesshasanumberofadvantages,italsoh…  相似文献   

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