交替好氧_缺氧短程硝化反硝化生物脱氮_.方法实现与控制_高大文

文章编号:0253-2468(2004)05-0761-08中图分类号:X703文献标识码:A交替好氧缺氧短程硝化反硝化生物脱氮Ⅰ.方法实现与控制高大文1,彭永臻2,王淑莹2(1.哈尔滨工业大学市政环境工程学院,哈尔滨150090;2.北京工业大学环境与能源工程学院,北京100022)摘要:采用实时控制策略和曝气搅拌交替运行方式在(26±1)℃下开发了一种新型短程硝化反硝化生物脱氮工艺:实时控制交替好氧缺氧短程硝化反硝化脱氮工艺.并对其与实时控制传统SBR法短程硝化反硝化脱氮和预先设定时间控制交替好氧缺氧短程硝化反硝化脱氮工艺进行了比较研究.结果显示,实时控制交替好氧缺氧短程硝化反硝化脱氮工艺无论从硝化速率、反硝化速率还是从硝化时间、反硝化时间上均优于实时控制传统SBR法短程硝化反硝化脱氮和预先设定时间控制交替好氧缺氧短程硝化反硝化脱氮两种工艺.其硝化速率和反硝化速率分别是预先设定时间控制交替好氧缺氧短程硝化反硝化工艺的1.38倍和1.25倍,是实时控制传统SBR法短程硝化反硝化脱氮工艺的1.82倍和1.61倍.因此,实时控制交替好氧缺氧短程硝化反硝化脱氮工艺不但能够合理分配曝气和搅拌时间,而且还能提高硝化、反硝化速率,缩短反应时间,从而达到降低运行成本的目的.关键词:生物脱氮;交替好氧缺氧;SBR;短程硝化反硝化;实时控制Alternatingoxic-anoxicshortcutnitrification-denitrificationⅠ.realiza-tionandcontrolGAODawen1,PENGYongzhen2,WANGShuying2(1.SchoolofMunicipal&EnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090;2.SchoolofEnvironmentalandEnergyEngineering,BeijingUniversityofTechnology,Beijing100022)Abstract:Anovelbiologicalnitrogenremovaltechnologyviashortcutnitrification-denitrificationwasdevelopedusingbothreal-timecontrolstrategiesandalternatingaerationmixingoperationmodeat26±1℃,whichisalternatingoxicanoxicshortcutnitrification-denitrificationun-derreal-timecontrol.Acomparativestudyonitandshortcutnitrification-denitrificationundertraditionalSBRprocesswithreal-timecontrolandalternatingoxicanoxicshortcutnitrification-denitrificationunderfixedtimecontrolmodewasmadeinsequencingbatchreactor(SBR).Theresultsshowedthatalternatingoxicanoxicshortcutnitrification-denitrificationunderreal-timecontrolisthebestoneincomparisonwithotherprocesses.Itsnitrificationanddenitrificationrateswere1.38timesand1.25timesofalternatingoxicanoxicshortcutnitrification-denitrificationunderfixedtimecontrol,andwere1.82timesand1.61timesofshortcutnitrification-denitrificationundertraditionalSBRprocessrespectively.Sothistechnologycannotonlycontrolaerationandmixingtimeaccurately,butalsoimprovebothnitrificationanddenitrificationratesandde-creasestotalreactiontime,andsavestheoperationcost.Keywords:biologicalnitrogenremoval;alternatingoxic-anoxic;SBR;