10中英文双语外文文献翻译成品大气污染的防控 – 一条综合性的设计方法.doc
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10中英文双语外文文献翻译成品大气污染的防控 – 一条综合性的设计方法.doc
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外文标题:
AirPollutionPreventionandControl-AnIntegratedDesignedApproach
外文作者:
Dr.AksheyBhargava,M.tech,Ph.D.,LLB
文献出处:
InternationalJournalofEngineeringScienceandComputing,April2016,Volume6,IssueNo.4
英文2873单词,14698字符,中文4589汉字。
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原文:
AirPollutionPreventionandControl-AnIntegratedDesignedApproach
Dr.AksheyBhargava,M.tech,Ph.D.,LLB
Abstract:
ThePlanning,ManagementandControlofAirPollutionneedtobeaddressedsimultaneouslytoachievethemaximumoutput.Thepresentpapersignifytheimportanceandhighlightanintegratedapproachneedstobeinfusedintothesystemwhichinter-aliaincludeSourcecontrol,Pathwaycontrol,andReceptorcontrol.AnefforthasbeenmadeinthepresentpapertobrieflydescribePathwayandReceptorcontrolwithmainemphasisondesignoftheAirPollutionControlSystems,particularlyBagFilterstocontroldustemissionsandWetScrubberstocontrolgaseousemissionsbywayofThrowawayscrubbingprocesses,RegenerativeScrubbingProcesses,DryProcessesandSprayTowers.
KeyWords:
AirPollution,IntegratedApproach,DesignofControlSystems.
Introduction:
Theterm“AirPollution”isusedtodescribesubstancesthatareartificiallyintroducedintotheairintheformofgasesandairborneparticleswhich,inexcess,areharmfultohumanhealth,buildingsandecosystems.Airpollutionismainlycausedbycombustionoffossilfuel,processingofmaterialsanddecompositionoforganicmatters.Themainsourcesofairpollutionisfromindustrialactivities,transportsector,householdfuelburning,andothercommercialactivities.Thepresentpaperhighlightanintegratedapproachwhichinter-aliaincludeSourceControl,Pathwaycontrol,andReceptorcontrol.AnefforthasbeenmadeinthepresentpapertobrieflydescribePathwayandReceptorcontrolwithmainemphasisondesignoftheAirPollutionControlSystems,thedetailsofwhichareasunder:
PathwayControl:
Pathwaycontrolisacontrolsystemthroughwhichtheairpollutantsarerestrictedorarrestedbetweenasourceandreceptorthroughthemechanismofscavengingandfiltration.Thiscanbeachievedbyhavingagreenbeltofsuitablespeciesbetweensourceandreceptor.Suchagreenbeltwouldbeabletoabsorbtheairpollutiongasesandwouldalsoactasfilteringmediafortheparticulatematter.Sometimesincertainsituations,curtainsintheformofhighwallsorothermeansarealsoprovidedbetweensourcesandreceptortorestrictairpollutantstoreachreceptors.
ReceptorControl:
Receptorcontrolisgovernedbyanintegratedurbanandruralplanningwhichshouldinvariablyincorporateenvironmentalpolicyparametersintheformoffollowing:
-Atmosphericstabilitycondition
-Aerodynamiceffects
-Albedo-effect
-Heatislandeffect
-Ventilationcoefficients
-Optimizationbetweenconcretingandnon-concretingsurfacearea
-Optimizationbetweenverticaltohorizontalexpansionofurbanarea
Iftheaboveissuesareadequatelyandscientificallyaddressed,thelevelofairpollutionatthereceptorurbanareashallbesignificantlylow.
SourceControl:
Mainstressisusuallylaidonsourcecontroltechniqueswiththefocusontwofronts,oneon“transformationofwastegasses/materialsintousableproducts”andsecondon“endofthepipetreatment“.Thefirstapproachisgraduallycomingtoforefrontwiththeadvancementofresearchanddevelopmentalactivitiesandwhichhaseconomicvalueaddition.Thesecondapproachiscostintensiveinwhichpollutioncontrolequipmentordevicesareinstalledtorestrictairpollutionintoatmosphere.Sourcecontrolisalsoassociatedwithintroductionofcleanertechnologies,optimizationofprocesses,controlledcombustions,useofcleanerrawmaterialsorfuelsetc.
DesignofAirPollutioncontrolsystems:
A.ParticulateMattercontrol:
Therearevariousairpollutioncontrolequipmentforthecontrolofdustemissionsdependinguponparticlesize,minimumloading,desiredefficiency,typicalvelocity,maximumgaspressuredrop,andspacerequirements.Thesecontrolequipment’saredrycollectors,aswellas,wetcollectorsdependinguponthebasiccharacterisesofgasandlocalconditions.
Thedrycollectingdevicesare:
1.Settlingchambers
2.Bafflechambers
3.Lowerchambers
4.Cyclonechambers
5.Multiplecyclones
6.Impingement
7.FabricFilters
8.Electrostaticprecipitators
Thewetdevicesareusedwhereinwaterorscrubbingmediaisusuallyusedtocontrolemissions.Thesecontroldevicesare
1.Gravityspraytower
2.CentrifugalCollectors
3.Impingementchambers
4.Packedtower
5.Jetsprayscrubbingtower
6.Venturyscrubber
Bagfiltersdesign:
Introduction:
Filtrationisamongthemostreliable,efficient,andrathereconomicalmethodsbywhichparticulatemattermayberemovedfromgases.
·Suchtypeo
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