DO浓度及其空间分布对Orbal氧化沟去除污染物效果赵群英

201837887-8994WaterPurificationTechnology．DOOrbalJ．201837887－8994．ZhaoQunyingTianMinLiKan．EffectofDOconcentrationandthespatialdistributiononpollutantsremovalbyOrbaloxidationditchJ．WaterPurifi-cationTechnology201837887－8994．DOOrbal1211．7100212．710024OrbalDO。Orbal——COD、TNNH3-NOrbal、DO1mg/L2mg/L《》GB18918—2002A。TU992A1009-0177201808-0087-04DOI10.15890/j．cnki．jsjs．2018.08．016EffectofDOConcentrationandtheSpatialDistributiononPollutantsＲemovalbyOrbalOxi-dationDitchZhaoQunying1TianMin2LiKan11．SchoolofCivilEngineeringXi’anTechnologicalUniversityXi’an710021China2．Xi’anSewageTreatmentCo．Ltd．Xi’an710024ChinaAbstractOrbaloxidationditchprocessofactualoperationisappliedtoexaminetheimpactofDOconcentrationandspatialdistribu-tioninmunicipalwastewatertreatment．TheresultsshowthatwhenoutsideditchofOrbaloxidationditchisn’tinstalledbackflowplateaerobicanoxicandanaerobicenvironmentcanbeformedinlongitudinaldirectionanditisbeneficialtorealizeefficientremovalofCODTNandNH3-Nandfullreleaseofphosphorus．IfmidandinnerditchofOrbaloxidationditchisoperatedbytraditionaldesignandoperationmodetheconcentrationofDOismaintainedatabove1mg/Land2mg/Lthepollutantswillbefurtherremoved．Efflu-entwaterqualitycanreachthestandardofthefirstclassandgradeAofUrbanSewageTreatmentPlantPollutantDischargeStandardGB18918—2002．KeywordsOrbaloxidationditchDOconcentrationlongitudinaldistributionpollutantremoval2017-08-2312JK06411978—。Orbal2060Huisman70Envirex1－2。、、。3－4。Orbal。Orbal《》GB18918—2002A。Orbal—78—。11．1Or-bal。、4Orbal。Orbal108m×50m×5.0m4.5m24300m32.5t。85.5kW21。1400mm449.2m37kW7500mm177.5m30kW65800mm135.8m22kW。1.15kgO2/h。0.075kgBOD5/kgMLSS·d4g/L50%～100%17d。1．2Orbal、、15min。1．31OrbalFig．1DistributionMapofOrbalOxidationDitchDO。DO11～91.5m。HAM-ILTONVISIFEＲMDO120。COD、NH3－N、TN、TP53、6、9。3。22．1Orbal2OrbalDO3。———DODO“0”。。DO。0～0.5mDO1mg/L。DO0～0.5mg/L0～0.5mDO1mg/L。。DO0～0.5mDO1mg/LDODO。22OrbalDOFig．2VariationofDOConcentrationinOuterDitchofOrbalOxidationDitchDO—88—．DOOrbalVol．37No．820180～0.5mDO1mg/L1.5mDO0.15mg/L2.5mDO0mg/L。DO——。1COD50mg/LTNNH3-NTP。Orbal0～0.5m1.5mg/LDO0.5m0mg/LDO。3OrbalDOFig．3VariationofDOConcentrationintheOuterDitchofConventionalOrbalOxidationDitchbeforeＲeconstruction1Tab．1VariationofWaterQualityCODCr/mg·L－1TN/mg·L－1NH3-N/mg·L－1TP/mg·L－1112.525.3223.144.4345.213.259.274.7140.113.299.304.4834.110.233.562.5429.55.212.140.142．2Orbal4DOFig．4VariationofDOConcentrationinMidDitchofOrbalOxidationDitch4DO1mg/LDO——DODO。NH3-N。1COD、TN、NH3-NTP25%、23%、62%46%。2．3Orbal5DO2mg/LDO。。1COD、TN、NH3-NTP《》GB18918—5DOFig．5VariationofDOConcentrationinInnerDitchofOrbalOxidationDitch94—98—WATEＲPUＲIFICATINTECHNOLOGYVol．37No．82018August25th2018ACODCr、BOD5、NH3-NTP《》GB3838—2002Ⅳ。1．AAOJ．201736s274-77．2．M．2．2011．4．J．2012301108-110113．5．J．2018374111-115．6．J．201635491-94．892002A。31Orbal。2Orbal———COD、TNNH3-N。COD、TNNH3-N60%、47%60%TP。3Orbal、DO1mg/L2mg/L《》GB18918－2002A。1．M．5．2015．2．OrbalJ．201041161-64．3．J．20103623212261．4．OrbalJ．200927462-6490．5．M．2002．—49—．Vol．37No．82018