工业用水重复利用催化策略

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1、Catalyticstrategiesforindustrialwaterre-useAbstract:Theuseofcatalyticprocessesinpollutionabatementandresourcerecoveryiswidespreadandofsignificanteconomicimportance.Forwaterrecoveryandre-usechemo-catalysisisonlyjuststartingtomakeanimpactalthoughbio-catalysisiswellestablished.Thispaperwilldiscusssomeo

2、ftheprinciplesbehinddevelopingchemo-catalyticprocessesforwaterre-use.Withinthiscontextoxidativecatalyticchemistryhasmanyopportunitiestounderpinthedevelopmentofsuccessfulprocessesandmanyemergingtechnologiesbasedonthischemistrycanbeconsidered.Specifically,redoxcatalysiswithactiveoxygentransferoxidants

3、hasadvantagesandthispaperwillconsiderthedesignofsuchtechnologies.Keywords:CODremoval;Catalyticoxidation;Redoxcatalysts;Industrialwatertreatment1・IntroductionIndustrialwaterre-useinEuropehasnotyetstartedonthelargescale.However,withpotentiallongtermchangesinEuropeanweatherandtheneedformorewaterabstrac

4、tionfromboreholesandrivers,theavailabilityofwateratlowpriceswillbecomeincreasinglyrare.Aswaterpricesrisetherewillcomeapointwhentechnologiesthatexistnow(orarebeingdeveloped)willmakewaterrecycleandre-useaviablecommercialoperation.Asthatfutureapproaches,itisworthstatingthemostimportantfactaboutwastewat

5、erimprovement-avoiditcompletelyifatallpossible!Itisbesttoconsiderwaternotasanaturallyavailablecheapsolventbutrather,difficulttopurify,easilycontaminatedmaterialthatifallowedintotheenvironmentwillpermeateallpartsofthebiosphere.Apollutantisjustamaterialinthewrongplaceandthereforedesignyourprocesstokee

6、pthematerialwhereitshouldbe-containedandsafe・Avoidaneeandthenminimisationarethetwofirststepsinlookingatanypollutantremovalproblem.Ofcourseavoidancemaynotbeanoptiononanexistingplantwhereanychangesmayhavelargeconsequencesforplantitemsifmajorflowsheetrevisionwererequired・Alsoavoidancemaymeansimplytrans

7、ferringtheissuefromtheaqueousphasetothegasphase.Thereareadvantagesanddisadvantagestobothwaterandgaspollutantabatement.However,itmustberememberedthatgasphaseorganicpollutantremovalismuchmoreadvancedtha