O3工艺处理石化二级出水的比较

O3/BAFBAF/O3122212331．1001242．1000123．132000O3/BAFBAF/O3CODNH3－N。O315mg/LO3/BAFCOD32．8%、COD68．82、46．22mg/LCOD＞50mg/L。BAF/O3CODO3＞20mg/LBAF/O3CODO3/BAFO325mg/LCOD50mg/L。SUVAO3/BAFO3BAFCOD。O3/BAF20mg/LNH3－N35．1%BAF/O312%。NH3－N0．4～2．5mg/L《》GB8978—1996。BAF/O3。O3/BAFBAF/O3X7[e-mail]eatmentofPetrochemicalSecondaryEffluentbyO3/BAFandBAF/O3ProcessesDINGYan12WUChang-yong2ZHOUYue-xi2LIJun1LIUMing-guo2GAOWei3GUOHong-wen31．CollegeofArchitectureandCivilEngineeringBeijingUniversityofTechnologyBeijing100124China2．ＲesearchCenterofWaterPollutionControlTechnologyChineseＲesearchAcademyofEnvironmentalSciencesBeijing100012China3．WastewaterTreatmentPlantPetroChinaJilinPetrochemicalCompanyJilin132000ChinaAbstractTheO3/BAFandBAF/O3processeswererespectivelyusedforadvancedtreatmentofthepetrochemicalsecondaryeffluent．TheremovalratesofCODandNH3－Nbytheabovetwocombinedprocessesusingdifferentozonedosageswereinvestigated．Inadditionthevariationofthemolecularweightdistributionoftheorganicsinthewastewaterduringthetwotreatmentprocesseswasalsostudied．·23·3123201512CHINAWATEＲ＆WASTEWATEＲVol．31No．23Dec．2015TheresultsshowedthatthebestdosageofozoneinO3/BAFprocesswas15mg/L．TheinfluentCODconcentrationwas68．82mg/LandtheeffluentCODconcentrationwas46．22mg/Lwiththehighestre-movalrateof32．8%onthiscondition．HowevertheeffluentCODconcentrationwasover50mg/Lun-dershockloadingcondition．AsthepostozonationconfigurationforBAF/O3processmoreozonedosagecouldresultinmoreCODremoval．ThewholeCODremovalbyBAF/O3processwashigherthanthatbyO3/BAFwhentheozonedosagewasover20mg/L．TheeffluentCODconcentrationwasstableandlowerthan50mg/Lwhentheozonedosagewas25mg/L．TheresultsofSUVAUV254/DOCandmolecularweightdistributionoftheorganicsshowedthatozonecouldtransfermacromolecularorganicsintomicromo-lecularorganics．ThebiodegradabilityofthepetrochemicalsecondaryeffluentwassignificantlyimprovedbyozonemakingitmoresuitableforthetreatmentbyBAF．TheremovalrateofNH3－Nwasthehighestwiththeremovalrateof35．1%whentheozonedosagewas20mg/LinO3/BAFprocess．HowevertheremovalrateofNH3－Nfluctuatedabout12%duringthewholeexperimentforBAF/O3indicatingthattherelationshipbetweenNH3－Nremovalandozonedosagewasnotobvious．ConsideringthatNH3－Nconcentrationinthepetrochemicalsecondaryeffluentwas0．4to2．5mg/Lmeetingthefirstclasscrite-riaspecifiedintheIntegratedWastewaterDischargeStandardGB8978－1996BAF/O3canguaranteetheeffluentCODconcentrationtomeetthestandardsoitismoresuitablethanO3/BAFfortheadvancedtreatmentofpetrochemicalsecondaryeffluent．KeywordsO3/BAFBAF/O3petrochemicalsecondaryeffluentmolecularweightdistri-bution1。2。BAFBAF。O3BAFBAFCODSSO3O3O3。O3BAF。11.1BAF。BAF1500mm100mm100mm1200mm。5g/h。。O3/BAFBAF/O3COD3HＲT3h3∶1O34min5、10、15、2025mg/L。1.2COD60～120mg/LBOD50．95～4mg/LUV2540．6～0．8cm－1NH3－N2mg/LTN12mg/LpH7～8SS20～27mg/LTP1．0～1．5mg/L。COD、NH3－N、BOD5、TOC、SS、O3、UV254。TOCTOC－VCPH/CPNDOC0．45μmTOCCODNH3－NBOD5·33·．watergasheat．comO3/BAFBAF/O331230．45μm0．1MPaMillipore8400100、30、10、5、3、1ku。22.1COD4min5、10、15、20、25mg/LO3/BAFBAF/O3COD1、2。COD/(mg·L-1)100510/（mg·Ｌ－１）152025806040020Ｏ３/ＢＡＦＢＡＦ/Ｏ３1CODFig．1ＲemovalofCODbycombinedprocessesunderdifferentozonedosagesO3/BAFBAF/O3COD/％50510/（mg·Ｌ－１）1520254030200102CODFig．2ＲemovalefficiencyofCODbycombinedprocessesunderdifferentozonedosages12O3/BAFO35mg/L25mg/LCOD。O315mg/LCOD32．8%、COD68．82、46．22mg/LCOD59．4mg/L。O33。O315mg/LO3O3BAF。BOD5O33。O3BAF4O315mg/LO3/BAFCOD。O3BOD5/(mg·L-1)8510/（mg·Ｌ－１）15202564203BOD5Fig．3EffectofozonedosageonBOD5concentrationBAF/O3CODBAFCODO3。O35mg/LCOD10%O3＞20mg/LBAF/O3CODO3/BAF。COD＜50mg/LO3/BAFO315mg/LCOD50mg/L。BAF/O3O325mg/LCOD50mg/L。O3/BAFO3O3SSSS25mg/LO3BAF/O3BAFSS10mg/LO3。O3BAF/O3。2.2SUVASUVAUV254/TOC。45SUVA。O3/BAFSUVA·43·3123．watergasheat．com5mg/LSUVA7．8%25mg/LSUVA25%。SUVA。BAF。BAFSUVABAF5。BAF/O3BAFSUVASUVASUVAO3/BAF。O3ＢＡＦSUVA/(L·mg-1·cm-1)0.040510/（mg·Ｌ－１）1520250.0350.0300.0250.0200.0150.0104O3/BAFSUVAFig．4SUVAofinfluentandeffluentofO3/BAFO3ＢＡＦSUVA/(L·mg-1·cm-1)0.040510/（mg·Ｌ－１）1520250.0350.0300.0250.0200.0150.0105BAF/O3SUVAFig．5SUVAofinfluentandeffluentofBAF/O32.3O315mg/L67。＜1ku50%3～10ku＞100ku26%10%。。1ku68．4%100ku7．6%。BAF＜1ku43．5%。O3ＢＡＦ/%806040200＜11~3/ku3~55~1010~3030~100＞1006O3/BAFFig．6MolecularweightdistributionoforganicsduringtreatmentbyO3/BAFＢＡＦＯ３/%806040200＜11~3/ku3~55~1010~3030~100＞1007BAF/O3Fig．7MolecularweightdistributionoforganicsduringtreatmentbyBAF/O3BAF/O3＜1kuBAF50%45%100ku4%1～3ku19%。＜1ku61%。1～3ku＜1ku16%。O3/BAFO3BAF。BAF/O3BAF15mg/LO3/BAFCODBAF/O3。·53·．watergasheat．comO3/BAFBAF/O331232.4O3/BAFBAF/O38。O3/BAF20mg/L35．1%BAF/O312%。/%403020100510152025O3/BAFBAF/O3/(mg·L-1)8Fig．8EffectofozonedosageonNH3－Nremoval。。－5%～5%。BAFBAFBAF/O3BAFO3/BAFCOD。O3/BAF。0．4～2．5mg/LGB8978—199615mg/LCODBAF/O3。3①O3/BAF15mg/LCOD32．8%COD68．82、46．22mg/LCOD50mg/L。BAF。20mg/LNH3－N35．1%。②BAF/O3COD20mg/LO3/BAF25mg/LCOD50mg/L。NH3－N12%。③NH3－N0．4～2．5mg/LBAF/O3COD。1．－J．2014352651－656．2LiCWChenYMChiouYCetal．DyewastewatertreatedbyFentonprocesswithferrousionselectrolyticallygeneratedfromiron-containingsludgeJ．JHaza