温度和CN比对生物膜反硝化速率的影响

温度和C/N比对生物膜反硝化速率的影响郑兰香1鞠兴华2(1.宁夏大学资源环境学院银川750021;2.西安建筑科技大学西安710055)摘要温度和C/N比是影响生物反硝化速率的2个重要参数,以反硝化生物膜为对象,研究了温度和C/N比对生物膜反硝化速率的影响。实验结果表明,生物膜在25e下的反硝化速率要比13e下的大;C/N比越高生物膜反硝化速率越大。关键词生物膜反硝化温度C/N比TheEffectofTemperatureandC/NRatioonBiofilmDenitrificationRateZHENGLanxiang1JUXinghua2(1.SchoolofResourcesEnvironment,NingxiaUniversityYinchuan750021)AbstractTemperatureandC/Nratioarethetwoimportantparametersaffectingbiologicaldenitrificationrate.Takingdenitrifyingbiofilmastheresearchobject,theresearchisconductedandtheresultshowthatthebiofilmdenitrificationrateishigherat25ethanat13eandden-itrificationrateisincreasedwiththeincreaseofC/Nratio.KeywordsbiofilmdenitrificationtemperatureC/Nratio在生物反硝化系统中,反硝化速率受多种因素如碳源的种类和投加量、温度、pH、溶解氧等的影响。对于活性污泥系统的反硝化速率及其影响因素的研究已有诸多报道,本试验以培养5个月的反硝化生物膜为对象,研究了温度和C/Npermeablereactivebarriers.Internationalcontainmenttechnologyconfer-ence.StPetersburg,Florida:[s.n.],1997,753-7592李海明,陈鸿汉,钟佐,等.垃圾堆放场氯代脂肪烃对浅层地下水的污染特征初步分析.中国地质大学学报,2002,27(2):227-2303GillhamRW,OpHannesinSF.Enhanceddegra-dationofhalogenatedalphaticsbyzero-valentiron.GroundWater,1994,32(6):958-9674何小娟,刘菲,黄园英,等.利用零价铁去除挥发性氯代脂肪烃的试验.环境科学,2003,24(1):139-1425KimY,CarrawayER.Dechlorinationofpenta-chlorophenolbyzero-valentironandmodifiedzero-valentirons.EnvironSciTechnol,2000,34(10):2014-20176JohnsonTJ,FishW,GorbyYA,etal.Degradationofcarbontetrachlo-ridebyironmetal:complexationeffectsontheoxidesurface.JContamHydrol,1998,29:379-3987刘菲,黄园英,张国臣.纳米镍/铁去除氯代烃影响因素的探讨.地学前缘,2006,13(1):150-1548SeungheeChoe,Sang-HyunLee,etal.RapidreductivedestructionofhazardousorganiccompoundsbynanoscaleFe0.Chemosphere,2001,42:367-3729KoberR,SchlickerO,EbertM,etal.DegradationofchlorinatedethylenesbyFe0:inhibitionprocessesandmineralprecipitation.Env-ironmentalGeology,2002,41:644-65210MallatT,BodnarZS,PetroJ,ReductionbyDissolvingBimetals.Te-trahedron,1991,47(3):441-44611徐新华,卫建军,汪大.Pd/Fe及纳米Pd/Fe对氯酚的脱氯研究.中国环境科学,2004,24(1):76-8012全燮,刘会娟,杨凤林,等.二元金属体系对水中多氯有机物的催化还原脱氯特性.中国环境科学,1998,18(4):333-33613MuftikianR,FernaandoQ,KorteNE.,Amethodoftherapi