管式生物过滤器去除乙苯废气徐超

84环境工程学报Vol．8No．420144ChineseJournalofEnvironmentalEngineeringApr．201412123*121231．4100822．4100823．310018VOCs。、。TBFs。、EBCT、ＲE。。40mg/m340d15s40、80、120160mg/m3。。15s30s60s38．60g/m3·h。。。X701．7A1673-9108201404-1579-07EvaluationoftubularbiofilterperformancesforethylbenzeneremovalfromwastegasstreamsXuChao12YangChunping123HeHuijun12ChengYan12LyuLi31．CollegeofEnvironmentalScienceandEngineeringHunanUniversityChangsha410082China2．KeyLaboratoryofEnvironmentalBiologyandPollutionControlHunanUniversityMinistryofEducationChangsha410082China3．ZhejiangProvincialKeyLaboratoryofSolidWasteTreatmentandＲecyclingCollegeofEnvironmentalScienceandEngineeringZhejiangGongshangUniversityHangzhou310018ChinaAbstractBiofiltrationisbecomingaconventionaltechnologyforthecontrolofvolatileorganiccompoundsVOCsandodoremissionsfromwastegasstreamsduetoitswellcost-effectivenessandenvironmentalfriendli-ness．Evendistributionofnutrientsolutionsbiofilmsandgasstreamswithinthemediumbediscrucialtoabetterperformanceofabiofilter．TubularbiofiltersTBFsmanufacturedinthislaboratoryshowthisadvantage．Inthisinvestigationperformancesoftubularbiofilterspackedwithpolyurethanespongemediawereevaluatedunderva-riousethylbenzeneloadingratesgasemptybedcontacttimeEBCTanddifferentgasflowrates．Theperform-ancesoftheTBFsweremonitoredatthestart-upperiod．Theacclimationofmicrobialtoethylbenzenewasa-chievedbyexposingthebiofilterbedtoaninletethylbenzeneconcentrationof40mg/m3andanEBCTof15sfor40days．ThentheTBFswereoperatedcontinuouslyatinletethylbenzeneconcentrationsof4080120and160mg/m3．ＲesultsshowedthattheethylbenzeneremovalefficiencyＲEdecreasedwithanincreasedethylbenzeneloadingrate．WhenEBCTincreasedfrom15sto30sand60sataconstantVOCloadingrateof38．60gethyl-benzene/m3·htheethylbenzeneＲEincreasedslightly．InadditionthemaximumaverageＲEwasdecreasedwhiletheeliminationcapacityincreasedwithincreasedgasflowrateataconstantinletethylbenzeneconcentration．ＲesultsalsoshowedthatsurfactantTritonX-100inthenutrientsolutionledtoahigherＲE．Keywordsbiofiltrationethylbenzenesurfactanttubularbiofiltervolatileorganiccompound51278464200901611100102013－03－272013－06－131989～。[e-mail]*[e-mail]、、BTEX。BTEX。812。、、、、BTEX、、34。、5-8910。11-19。、、、、、20-23。、、、、。、、pH。。、、、VOCs。。、、、。11．1。。1．2TBFs。TBF96%30mm80mm140mm100mm1．036L。1．3TBFs、、。16cm0．5cm15cm。TBF。TBF。。VOCCO2H2O。。1Fig．1Schematicdiagramoftubularbiofilter1．4ethylbenzeneC8H1099．0%。。2。1．5、、。。。124。1．6FIDHP5890SeriesIIHewlett-PackardPaloAltoCali-fornia。HP-VOC60m×320μmID×1．8μm120℃120℃250℃。99%30mL/min99%30mL/min350mL/min。。085141Table1Compositionandconcentrationsofnutrientsolutionmg/Lmg/LNaNO3490NaHCO324．00KH2PO49．25K2HPO428．16CaCl22．69CuCl2·2H2O0．062MgSO44．40CoCl2·6H2O0．866MnCl2·4H2O0．144FeCl30．0926B20．00230．000890．00230．0023B60．0046B10．00231．7。TBF。、、EBCT。238d。1～3435～82、75～110、111～166167～238、EBCT、。2。2Table2Operatingconditionsofexperimentsg/m3·hmg/m3EBCTs35～429．65401543～5319．30801555～609．65401561～6928．951201570～749．65401575～8238．801601583～9338．803203094～10138．8016015102～11038．8064060111～1669．654015167～1849．654015185～19519．30407．5196～2029．654015203～22738．80403．85228～2389．65401522．1。15s21240mg/m39．65g/m3·h。2。2Fig．2PerformanceofTBFduringstart-upperiod。20mg/m380%。40mg/m390%。YangC．P．25。DeshussesM．A．26。TBF40mg/m3EBCT15s、。TBF。34TBF90%91．1%。27、7d12d1851819d。。。2．2。35～42TBF40mg/m39．65g/m3·h。43～53、61～6975～8280、160320mg/m319．30、28．9538．80g/m3·h。TBF40mg/m39．65g/m3·hTBF。3。3Fig．3InfluencesoforganicloadingrateonethylbenzeneＲE3。35～4290．2%。43279．3%81．1%。61365．9%71．6%。75464．6%65．5%。2～3d。。。ChenH．7。。2．3EBCTEBCT38．80g/m3·h75～82TBF15s。83～93102～11030s60s。TBF160mg/m315sTBF。4。4EBCTFig．4InfluenceofEBCTonethylbenzeneＲE4。75～8265.5%。8371%。102474．4%。。28514。。28。1～2d。EBCT4511。2．4TBFEBCT。。EBCT29。40mg/m3。175～184、185～198203～2279．65、19．3038．80g/m3·h15、7．53．75s。TBF9．65g/m3·h15sTBF。5。5Fig．5InfluencesofinletgasflowrateonethylbenzeneＲE5175～18490．6%。1850．5m3/h7．5s19．30g/m3·h。19488．6%。2031．0m3/h。。21876．1%。3Table3Eliminationcapacityatvariousorganicloadingratesstagesg/m3·hEBCTsmg/m3g/m3·h%9．6515409．0490．419．30158015．6880．938．801516024．7165．74Table4Eliminationcapacityatvariousinletgasflowratesstagesg/m3·hEBCTsmg/m3g/m3·h%9．6515409．0290．619．307．54018．5088．638．803．754033．2976．1EBCTEBCT4。1∶2．05∶3．69。39．65、19．3038．80g/m3·h15s1∶1．73∶2．73。。2．5111～166。9．65g/m3·hEBCT15s。146。6。EBCT126～14589．6%。14693．7%。4385186Fig．6EffectofTritonX-100onperformanceofTBF。。。3134d。。2。。3。。4。EBCT。5。1．2．20022KimI．Thepromisingworldofbio-oxidation．Chem．Eng．Prog．2004100463KennesC．ＲeneE．Ｒ．VeigaM．C．Bioprocessesforairpollutioncontrol．J．Chem．Technol．Biotechnol．200984101419-14364KennesC．MontesM．LópezM．E．etal．Wastegastreat-mentinbioreactorsEnvironmentalengineeringaspects．Can．J．Civil．Eng．200936121887-18945．/．2009418241-243SongNingningWangLipingHuaSulan．Treatmentofben-zeneandtoluenewastegasbybiotricklingfilter．JournalofHarbinInstituteofTechnology2009418241-243inChinese6YangC．P．ChenH．ZengG．M．etal．Modelingbiodeg-radationoftolueneinrotatingdrumbiofilter．WaterSci．Technol．2006541137-1447ChenH．YangC．P．ZengG．M．etal．Tubularbiofilterfortoluenere