EGSB处理中药废水的效能及影响因素刘兴哲

EGSB1121131．1500902．5410043．＜＞150090EGSBCOD、、。EGSB30℃、HＲT=12h、=1、COD2000mg/L5000mg/LCOD94．2%HＲT=9h、COD=5000mg/L、112．6kgCOD/m3·d0．353m3CH4/kgCOD20℃、2、COD5000mg/LCOD93．4%11．63kgCOD/m3·d0．157m3CH4/kgCOD。EGSBX703A1000－4602201319－0006－042012ZX07205－002PerformanceandInfluencingFactorsofEGSBＲeactorforTraditionalChineseMedicineWastewaterTreatmentLIUXing-zhe1SUCheng-yuan12WANGKai-yao1LIWei-guang131．SchoolofMunicipalandEnvironmentalEngineeringHarbinInstituteofTechnologyHarbin150090China2．SchoolofEnvironmentandＲesourcesGuangxiNormalUniversityGuilin541004China3．NationalEngineeringＲesearchCenterofUrbanWaterＲesourcesHarbin150090ChinaAbstractAnexpandedgranularsludgeblanketEGSBreactorwasemployedfortreatingtradi-tionalChinesemedicinewastewater．TheeffectsofinfluentCODconcentrationhydraulicretentiontimeHＲTandrecycleratioonthetreatmentefficiencywereinvestigated．Theresultsindicatedthatwhenthetemperaturewas30℃HＲTwas12hinfluentCODconcentrationincreasedgraduallyfrom2000mg/Lto5000mg/Landtherecycleratiowas1theaverageCODremovalratewas94．2%whenHＲTwas9hinfluentCODconcentrationwas5000mg/Landtherecycleratiowas1theaverageCODremovalloadwas12．6kgCOD/m3·dandtheaveragemethaneyieldwas0．353m3CH4/kg-CODshowingthattheEGSBreactorhadahightreatmentefficiency．Whenthetemperaturewas20℃therecycleratiowas2andinfluentCODconcentrationwasstabilizedat5000mg/LtheaverageCODremovalratewas93．4%theaverageCODremovalloadwas11．63kgCOD/m3·dandtheaveragemethaneyieldwas0．157m3CH4/kgCODshowingthatincreasingtherecycleratiocouldreducethein-·6·2919201310CHINAWATEＲ＆WASTEWATEＲVol．29No．19Oct．2013fluenceoflowtemperaturetosomeextent．KeywordstraditionalChinesemedicinewastewaterEGSBreactorOLＲHＲT、、。EGSB、、VC1、23、4、5。EGSB。EGSBCOD、、。11.11。1EGSBFig．1SchematicdiagramofEGSBreactorEGSB1020mm2．5L70mmNaOH。1.2、、、COD、SS、NH3－N、TN、TP4000～7000、550、57．54、88．78、1．43mg/LpH5．48200～300。pH、。NaHCO36pH。EGSB。1.3pHpH－3CpHVFAALKCODLML－1。22.1CODEGSB。12h30℃。Ⅰ∶=1∶1COD2000mg/LⅡCOD2000mg/LⅢ、ⅣⅤCOD3000、4000、5000mg/L。COD2000mg/L5000mg/LOLＲ4kgCOD/m3·d10kgCOD/m3·d。COD150mg/LCOD5000mg/LCOD300mg/L94．2%。COD1～2dCODEGSB2。·7·．watergasheat．comEGSB29192、CODFig．2VariationofCODremovalratewithrunningtime、pH6．5～7．8pH。3、VFA。VFACOD1．75mmol/L12mmol/L3mmol/L。ALK20～40mmol/LVFA/ALK0．4。COD0．25m3CH4/kgCOD0．31m3CH4/kgCOD。3Fig．3Variationofparametersyieldwithrunningtime2.2HＲTCOD5000mg/L、10kgCOD/m3·d。30℃12h9h6h。HＲT=9h。COD94．4%COD12．6kgCOD/m3·dpH7．2～7．8VFA3mmol/LVFA/ALK＜0．40．353m3CH4/kgCOD。HＲT6h16mmol/L20．25mmol/LVFA/ALK0．74COD＞1100mg/L78%6h9h。2.3COD5000mg/L、9h、20℃。1COD1100mg/L9．97kgCOD/m3·dVFA11．25mmol/LVFAALK24mmol/L6．36L/d0．15m3CH4/kg-COD0．88L/d0．035m3CH4/kg-COD。COD·8·2919．watergasheat．com2COD200～400mg/L93．4%11．63kgCOD/m3·dVFA3mmol/L0．157m3CH4/kgCOD。320dCOD200～400mg/LCOD94．3%12．85kgCOD/m3·dVFA0．17m3CH4/kgCODEGSB4。、2。4Fig．4Influenceofrefluxrationonmethaneyieldandalkalinity3①EGSB30℃、HＲT=12h、COD2000mg/L5000mg/LCOD94．2%VFA3mmol/LVFA/ALK＜0．4。②HＲT=9h、COD=5000mg/L、1EGSBCOD94．4%12．6kgCOD/m3·d0．353m3CH4/kgCODHＲT6h。③EGSB。EGSBHＲT=9h=2COD=5000mg/LCOD93．4%11．63kgCOD/m3·d0．157m3CH4/kgCOD。1．EGSBVCJ．2009251781－84．2．EGSBJ．2003251124－27．3．J．20034931－34．4．EGSBJ．200935292－96．5．EGSB－CASSJ．2010364122－124．6ColussiICortesiADellaVedovaLetal．Start-uppro-ceduresandanalysisofheavymetalsinhibitiononmetha-nogenicactivityinEGSBreactorJ．BioresourTechnol2009100246290－6294．1987－。[e-mail]2013－05－17·9·．watergasheat．comEGSB2919