有機廢水的催化臭氧氧化研究.pdf

1、浙江大學碩士學位論文有機廢水的催化臭氧氧化研究姓名：竹湘鋒申請學位級別：碩士專業(yè)：環(huán)境工程指導教師：徐新華20050512一一，塑堊盔堂墮主絲苧!塑墊墮查塑堡些塞塑塾垡竺塞Abstractozonationisapromisingalternativeinwatertreatmentfortheremovalofwaterpollutants，butozoneisalsowellknownasahighlyselectiveoxidan

2、twithoutthepotentialtofilrtheroxidizejntermediateswithrefractoryprope晰T0overcomethedisadvantage，eatalyticalozonationaremoreandmorefocusedonbymanyresearchersThisstudyincludesthreeparts：ozonationofphenolsolutioneatalvtical

3、ozonationofoxalicacid，andMn(II)一catalyzeddegradationofphenolwastewaterCODInthethirdchapterItwasfoundthatchemicaloxidationofphenoIbyozoneisaveryrapidprocess，whoseabsolutereactionrateisover1000M“‘s1Sotherateofthewholeproce

4、sswasCOIltrlledbythemasstrasferofozonefromgastoliquid，whichwasprovedbythatthelinearrelationshipofphenoldegradedamountandthereactiontimeAmongoftheparameters，someoneswhichchangedthenlasstrasferofozonehadthemoreeffecfivebeh

5、aviorthantheotherswhichacceleratet11ereactionrateThebatchtestshowedthatthesfiochiometricfactoris22iapH=3thedifierentvaluecorrespondstherelevantsolutionpHSomeintemaediatesweredetected，suchasbenquenzemaliecacidandoxalicaci

6、dbyHPLCOxalicacidwasthemainfinalproductintIleozunationofpben01ThepossiblepathwayofphenoloxidationbyozonewasconcludedIntheforthchapteroxalicacidwasoxiclizedthroughhydroxylradicalmechanism，difierenttoozonationofphenol，thec

7、hemicalreactionwasthebottle—neckstepofthewholeprocess，ThreefamiliartransitionmetalionsfM∥Fez，Cf1wereintroducedascatalystintothedegradationofoxalicacidbyozone，manganeseioilbehavedthebestcatalysis，F(xiàn)Ctookthesecondplace，howe

8、verCuzldidnotenhancet】】eoxidationofoxalicacidSomeexperlmentMparameters，especiallysuchaspHvalueandconeen仃ationofmetalions，effectstronglythereactionpHisthekeyfactorwhichwhetherdeterminedtheoxidationreactiontakeNace、andtheb

9、estefficiencyofcatalysisisgainedatmoderateconcentrationofcatalystThefinalproductCOzbeingionizedintoHC03一andHinweekacidicsolutionBecauseHC03isafamiliarscavengerofhydroxylradicaltheionizationofcarbonicacidclagedtheconversi

10、onofoxalicacidInt11e矗fmchapteritwasfoundthattheMn(II)eatalyzeddegradationoforganicwastewaterCODtookthesimilarcharacteristicasoftheOKalicacidTheenhmineddegradationofCODbyMn(II)wasdevotedtobytworeaction：(1)Mn(II)accelerate

11、dthedirectedreactionofozoneandorganicsolutes，(2)Mn(II)enhancethegenerationofhydroxylradicaltoindirectlyimprovedegradationoforganiccompoundsTheexperimentalresultindicatedtheMn(II)havethecatalysispotentialtooxidizeorganicw

12、astewaterwithsinglecomponent，buthelplesstotheindustrialwastewatercontainingcomplicatedcomponentsInordertogeneralizethetreatmentteehnology，ThefurtherstudywasrequffedKeyWords：ozone，catalyticoxidation，phenol，oxalicacid，tran