Carrousel氧化沟的低温高负荷运行研究殷芳芳

Carrousel、殷芳芳1,　王淑莹1,　侯红勋1,　杜海波2,　王　伟1(1.北京工业大学北京市水质科学与水环境恢复工程重点实验室,北京100124;2.青岛市排水管理处,山东青岛266071)　　　:　为了解Carrousel氧化沟在低温、高负荷下运行的可行性,通过调节进水流量来控制污泥负荷(Ns),于(14.0±0.6)℃下进行连续试验。结果表明:Ns为0.10kgBOD/(kgMLSS·d)时对氨氮的去除效果最好,去除率99%;同时脱氮效果也较为理想,平均脱氮率为54.7%,最高达62.8%。当Ns为0.17kgBOD/(kgMLSS·d)时对氨氮的最大去除率只有59.8%,出水氨氮23mg/L,且硝化能力的大幅下降还限制了脱氮效果,平均脱氮率只有31.5%。当Ns为0.13kgBOD/(kgMLSS·d)时对氨氮的平均去除率和脱氮率分别为75.3%、48.4%。可见,当Carrousel氧化沟工艺在冬季低温下运行时宜使污泥负荷≤0.10kgBOD/(kgMLSS·d),以保证硝化反应的充分进行,进而取得理想的脱氮效果。　　:　Carrousel氧化沟;　污泥负荷;　生物脱氮;　低温:X703.1　　:A　　:1000-4602(2008)19-0006-04　　:(PXM2008014204050843);　;　(ykj-2007-1518)StudyonPerformanceofCarrouselOxidationDitchatHighSludgeLoadingandLowTemperatureYINFang-fang1,　WANGShu-ying1,　HOUHong-xun1,　DUHai-bo2,　WANGWei1(1.BeijingKeyLaboratoryforWaterQualityScienceandWaterEnvironmentRecoveryEngineering,BeijingUniversityofTechnology,Beijing100124,China;2.QingdaoDrainageAdministration,Qingdao266071,China)　　Abstract:　ToevaluatethefeasibilityofCarrouseloxidationditchathighsludgeloadingandlowtemperature,continuoustestsattemperaturesof(14.0±0.6)℃werecarriedoutbyadjustingtheinflu-entflowratetocontrolsludgeloadings(Ns).TheresultsshowthatwhenNsis0.10kgBOD/(kgMLSS·d),theremovalefficiencyofammonianitrogenisbestwiththeremovalrateofmorethan99%,andtheremovalefficiencyoftotalnitrogenisupto62.8%withtheaverageremovalrateof54.7%.WhenNsis0.17kgBOD/(kgMLSS·d),themaximumremovalrateofammonianitrogenisonly59.8%andtheef-fluentammonianitrogenismorethan23mg/L.Thesignificantdecreaseofnitrificationcapacityrestrictstheremovalefficiencyoftotalnitrogen,andtheaverageremovalrateis31.5%.WhenNsis0.13kg-BOD/(kgMLSS·d),theaverageremovalratesofammonianitrogenandtotalnitrogenare75.3%and48.4%respectively.Itisconcludedthatforthepurposeofnitrificationanddenitrificationenhancements,sludgeloadingshouldbeequaltoorlessthan0.10kgBOD/(kgMLSS·d)whenCarrouseloxidation·6·第24卷　第19期2008年10月　　　　　　　　　　　　中国给水排水CHINAWATERWASTEWATER　　　　　　　　　　　　　Vol.24No.19Oct.2008ditchoperatesinwinter.　　Keywords:　Carrouseloxidationditch;　sludgeloading;　biologicalnitrogenremoval;　lowtem-perature　　、,,。(Ns)[1],,Ns0.03～0.10kgBOD/(kgMLSS·d)[2],Ns,、。,,。Carrousel,,、,。1　材料与方法1.1　Carrousel1。1　CarrouselFig.1　SchematicdiagramofCarrouseloxidationditch,12,。、、500、28095L。100%,30%,70%。,。1.2　(10—12),(14.0±0.6)℃。Ns0.17、0.10、0.13kgBOD/(kgMLSS·d),1。,0.10kgBOD/(kgMLSS·d),,3。DO2.20～2.60mg/L,pH7.1～7.4,C/N5.0。1.3　,1。1　Tab.1　Mainparametersofwastewatermg·L-1BOD5CODNH+4-NNO-2-NNO-3-NTN16733562.150.141.1063.391.4　BOD5:,COD:5B-1COD,NH+4-N:,NO-2-N:N-(1-)-,NO-3-N:,TN:MultiTOC/TN3000,MLSS:,pH、DO、:WTWinolablevel2。2　结果与讨论2.1　Ns2。2　、Fig.2　Ammonianitrogenconcentrationininfluent,effluentanditsremovalefficiency·7·殷芳芳,等:Carrousel氧化沟的低温、高负荷运行研究第24卷　第19期2,Ns0.10kgBOD/(kgMLSS·d),99%,0.6mg/L;Ns0.17kgBOD/(kgMLSS·d),59.8%,23mg/L;Ns0.13kgBOD/(kgMLSS·d),75.34%,71.3%,18mg/L。,0.13、0.17kgBOD/(kgMLSS·d),。,,,,。2.2　Ns,0.10kgBOD/(kgMLSS·d),54.7%,62.8%;0.17kgBOD/(kgMLSS·d),31.5%;0.13kgBOD/(kgMLSS·d)48.4%,52.0%。3。3　Fig.3　ProportionofdifferentnitrogensremainingineffluentNs0.17kgBOD/(kgMLSS·d),70%,80%;24%,3.4%。Ns0.13kgBOD/(kgMLSS·d),,。Ns0.10kgBOD/(kgMLSS·d),,95.2%,。,,,,。,,。,,。,100%50%。Ns0.10kgBOD/(kgMLSS·d)55%,50%。。2.3　4TNCarrousel。4　TNFig.4　MeanvalueofTNconcentrationineachsamplingpointwithdifferentsludgeloading4,TN,TN:,。TN。TN,:DO,DO,,;(),[3]。、[4],,TN。4,TN,TN。,,,TN。·8·第24卷　第19期　　　　　　　　　　　　　　中国给水排水　　　　　　　　　　　　。5　NH+4-NFig.5　MeanvalueofNH+4-Nconcentrationineachsamplingpointwithdifferentsludgeloading5,,,NH+4-NNO-3-N。,,。,0.17、0.13kgBOD/(kgMLSS·d),;,,。6。6　NO-2-NFig.6　MeanvalueofNO-2-Nconcentrationineachsamplingpointwithdifferentsludgeloading,2.0mg/L。Ns0.17、0.13kgBOD/(kgMLSS·d),,,。Ns0.10kgBOD/(kgMLSS·d),。,,,。,,。3　结论①　Ns0.10kgBOD/(kgMLSS·d),99%,0.6mg/L;Ns0.17kgBOD/(kgMLSS·d)≤59.8%,23mg/L;Ns0.13kgBOD/(kgMLSS·d)75.34%,71.3%,18mg/L。②　Ns0.10kgBOD/(kgMLSS·d),54.7%,62.8%;Ns0.17、0.13kgBOD/(kgMLSS·d),31.5%、48.4%,。③　Carrousel≤0.10kgBOD/(kgMLSS·d),,。:[1]　QiaoXL,ZhangZJ,ChenQX,etal.Nitrificationchar-acteristicsofPEGimmobilizedactivatedsludgeathighammoniaandCODloadingrates[J].Desalination,2008,222(1-3):340-347.[2]　.[M].:,2006.[3]　NakanoK,IwasawaH,ItoO,etal.Improvedsimultane-ousnitrificationanddenitrificationinasinglereactorbyusingtwodifferentimmobilizationcarrierswithspecificoxygentransfercharacteristics[J].BioprocessandBio-systemsEngineering,2004,26(3):141-145.[4]　,,,.A/O[J].,2003,29(7):13-15.:(1982-　),　,　,　,　。:[phone]　13810992303E-mail:[e-mail]:2008-05-04·9·殷芳芳,等:Carrousel氧化沟的低温、高负荷运行研究第24卷　第19期