侧沟式一体化氧化沟的生物脱氮周少奇

(自然科学版)3612JournalofSouthChinaUniversityofTechnologyVol.36　No.12200812(NaturalScienceEdition)December　2008文章编号:1000-565X(2008)12-0066-04　　收稿日期:2006-05-17　　　　修回日期:2007-06-12＊基金项目:(2005EC000288);(2003C34502);(2008ZA09);(2008-03)　作者简介:(1965-),,,,、、.E-mail:[e-mail]侧沟式一体化氧化沟的生物脱氮＊周少奇　王平(,510006)摘　要:一体化氧化沟占地面积小、工艺流程简单,因此已成为环保领域的研究热点.文中采用侧沟式一体化氧化沟技术处理生活污水,进行生物脱氮研究.试验期间,一体化氧化沟进水CODCr为200.00～400.00mg/L,NH+4-N进水从1.24mg/L迅速提高到39.72mg/L;出水CODCr保持在15.00mg/L以下,氨氮去除效果保持稳定,出水氨氮质量浓度在多数情况下保持在2.00mg/L以下.文中还分析了碱度、CODCr/NH+4-N质量比对生物硝化作用的影响,并就如何提高反硝化效率提出了建议.关键词:一体化氧化沟;硝化;反硝化;生物脱氮中图分类号:X703　　　　文献标识码:A　　,,,.“”2005,45%,60%.,,、、.,,,.,A2/O、(SBR).,,,.,,2080.,;,,.,:()、.,,(UnitedIn-dustriesInc.)、ArmcoBMTS、EIMCOCarrousel、(Lakeside)Lightnin,,Envirex[1].,[2]、、[3],10000m3/d.,1.,.、,,,.,,;.1　Fig.1　Diagramofsideditchworkinginside-channel-separatorIntegratedOxidationDitch　　.1　试验装置及试验方法1.1　试验装置与流程2.1.60m,2.24m,0.37m,250L.,,,,.,90W;0～82r/min,.,、.2　Fig.2　DiagramofIntegratdOxidationDitch1.2　测试方法,:DO、、CODCr、NH+4-N、TN.[4].CODCr:XJ-ICOD,-;NH+4-N:;TN:-;:;DO:;,(MLSS).2　一体化氧化沟处理生活污水试验及结果分析2.1　反应器的启动与污泥驯化.,,,,.,CODCr.20,CODCr,.,20.8L/h,12h.25～35℃,20,MLSS1～2g/L.,CODCr,,.2.2　氨氮的去除.,,.,(pH7.3N2O)[5].CODCr200～400mg/L,1.24mg/L39.72mg/L,(MLSS)0.002kg/(kg·d)0.055kg/(kg·d).,2.00mg/L,95%,3.917,,(1),,.,.3　Fig.3　AmmoniumnitrigenremovalefficiencyinIntegratedOxi-dationDitch2.3　有机物的去除CODCr4.4　CODCrFig.4　CODCrremovalefficiencyinIntegratedOxidationDitch67　12:4,CODCr190.86～400.25mg/L,CODCr15mg/L,95%.,.2.4　脱氮效果的影响分析2.4.1　硝化效果的影响.H+,,pH.H+.pH[6]:μn=(μn)[1-0.833(7.2-pH)]max.:μn.(1),1g4.57g,5.1g(CaCO3)[7].5+2fs40NH+4+1-fs4O2+fs4HCO-3=fs20C5H7O2N+　　18NO-3+5-4fs20H++5+6fs40H2O(1):fs.,DO.,2.2,917,,pH,6.5,.NH+4-N1.1　1)Table1　Relationshipbetweenthealkalinityandtheammoniumnitrigenremovalefficiency/dNH+4-N/(mg·L-1)NH+4-N/(mg·L-1)NH+4-N/%/(mg·L-1)/(mg·L-1)1513.814.0670.663.2417.551711.484.4261.567.1018.17207.520.00100.070.2323.00229.810.00100.080.1018.172414.590.00100.0109.1027.232519.531.0394.7123.5029.10　1)CaCO3.　　,CODCr/NH+4-N.,CODCr/NH+4-N.NH+4-N,CODCr/NH+4-N.5,CODCr/NH+4-N,.CODCr,、DO、,CODCr/NH+4-N.5　CODCr/NH+4-NFig.5　EffectofCODCr/NH+4-Nmassratioontheammoniumnitrigenremovalefficiency2.4.2　反硝化的影响,,DO2.0～3.0mg/L,.,TN,30%～50%.,,.,,,,,,、.,,,.3　结论:,CODCr15.00mg/L;,95%,.,TN.参考文献:[1]　,,.[J].,2000,26(11):28-31.DengRong-sen,XuJun-yi,TanXian-chun.Integraloxida-tionditchforurbanwastewatertreatment[J].WaterWasterwaterEngineering,2000,26(11):28-31.[2]　XiaShi-bin,LiuJun-xin.Aninnovativeintegratedoxida-tionditchwithverticalcirclefordomesticwastewatertreatment[J].ProcessBiochemistry,2004(39):1111-1117.[3]　,,,.———[J].,2001,27(4):1-4.DengRong-sen,XiaoHai-wen,WangTao,etal.Applica-tionofintegratedoxidationditchinmunicipalwastewatertreamentplant[J].WaterWasterwaterEngineering,2000,27(4):1-4.[4]　.68(自然科学版)36[M].4.:,2002.[5]　,.[M].:,1998.[6]　G,A.[M].:,1988.[7]　.[J].:,1998,26(3):124-126.ZhouShao-qi.Stoichiometricequationsandrelationshipsofbiologicalnitrogen-removal[J].JournalofSouthChinaUniversityofTechnology:NaturalScienceEdition,1998,26(3):124-126.BiologicalNitrogenRemovalinIntegratedOxidationDitchwithSide-ChannelSeparatorZhouShao-qi　WangPing(SchoolofEnvironmentalScienceandEngineering,SouthChinaUniversityofTechnology,Guangzhou510006,Guangdong,China)Abstract:Atpresent,theIntegratedOxidationDitchhasbecomearesearchhotspotintheenvironmentalprotectionfieldduetoitssmallspaceoccupancyandsimpleprocess.Inthispaper,aside-channel-separatorIntegratedOxida-tionDitchwasusedtotreatthemunicipalsewageandtoperformthebiologicalnitrogenremoval.Intheexperiment,theinfluentCODCrrangedfrom200.00to400.00mg/L,thecontentofNH+4-Nwasrapidlyincreasedfrom1.24to39.72mg/L,theeffluentCODCrwaskeptatlessthan15.00mg/L,andtheeffluentcontentofNH+4-Nwasgeneral-lykeptatlessthan2.00mg/L,showingastableNH+4-Nremovalefficiency.Furthermore,theeffectsofalkalinityandCODCr/NH+4-Nmassratioonthebiologicalnitrificationprocesswereanalyzed,andsomesuggestionswerepro-posedforpromotingthedenitrificationefficiency.Keywords:IntegratedOxidationDitch;nitrification;denitrification;biologicalnitrogenremoval　(上接第60页)ExperimentalInvestigationofTolueneDegradationbyPhotocatalysisCoupledwithDielectricBarrierDischargeHuangBi-chun　YangYue　ZhangXiao-ming　YeDai-qi(SchoolofEnvironmentalScienceandEngineering,SouthChinaUniversityofTechnology,Guangzhou510006,Guangdong,China)Abstract:Thispaperdealswiththedegradationoftoluenegasbythephotocatalysiscoupledwithdielectricbarrierdischarge(DBD).ItinvestigatestheeffectofthephotocatalystTiO2drivenbytheDBDontheconversionrateoftolueneatvariableenergydensity,gasflow,dischargetimeandinnerelectrodediameter.Theresultsshowthat(1)photocatalystTiO2improvestheconversionrateoftolueneandtheselectivityoftheproducts;(2)whentheenergydensityincreasesto1000J/L,theconversionrateoftolueneincreasesto88.0%andtheCO2productivityto39%;(3)withtheincreaseofgasflow,theconversionrateoftoluenedecreases;(4)theconversionrateofto-lueneincreasesrapidlyinthefirst5minutesofdischarge,thenremainsconstant10minlater;(5)theconversionrateoftolueneatfirstincreases