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时间:2020-06-06
《间歇喷淋营养液对生物滴滤塔净化甲苯的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、第26卷第6期环境科学研究Vo1.26,No.62013年6月ResearchofEnvironmentalSciencesJune,2013郑啊团,都基峻,曾萍,等.间歇喷淋营养液对生物滴滤塔净化甲苯的影响[J].环境科学研究,2013,26(6):672-677.ZHENGAtuan,DUJun,ZENGPing,eta1.Influenceofnutrientsolutionintermittentsprayingpatternonbiotricklingfiltersfortoluenedegradation[J]Researchof
2、EnvironmentalSciences,2013,26(6):672—677.间歇喷淋营养液对生物滴滤塔净化甲苯的影响郑啊团,都基峻,曾萍,刘宇,黄学敏,张凡1.西安建筑科技大学环境与市政工程学院。陕西西安7100552.中国环境科学研究院,环境基准与风险评估国家重点实验室,北京100012摘要:为探索间歇喷淋营养液对生物滴滤塔的影响,以净化甲苯为研究对象,应用FX。一14MR一001型可编程逻辑控制器(PLC),实现生物滴滤塔的间歇喷淋营养液操作,研究了环境温度、p(TN)、营养液喷淋密度和喷,停时间对净化甲苯能力的影响,并对机理进行了
3、分析.结果表明:当生物滴滤塔系统的气体停留时间为4O.70S时,营养液最佳喷淋密度为4.5L/(m·rain),最佳喷,停时间为2min/4min.当甲苯系统进口负荷小于88.29g/(m)时,甲苯的去除率可达95.O%以上;当进口负荷为186.o4g/(m’)时,甲苯的去除率为87.6%,系统对甲苯的最大去除能力由连续喷淋时的169.63g/(m·h)升至248.85g/(m’.h).关键词:生物滴滤塔;甲苯;间歇喷淋;去除率;去除能力中图分类号:X701文献标志码:A文章编号:1001—6929(2013)06—0672—06Influe
4、nceofNutrientSolutionIntermittentSprayingPatternonBiotricklingFiltersforTolueneDegradationZHENGA-tuan,DUJi-jun,ZENGPing,LIUYu,HUANGXue.min,ZHANGFanI.SchoolofEnvironmentalandMunicipalEngineering,Xi’anUniversityofArchitectureandTechnology,Xi’an710055,China2.StateKeyLaboratory
5、ofEnvironmentalCriteriaandRiskAssessment,ChineseResearchAcademyofEnvironmentScience,Beijing100012,ChinaAbstract:Toluenewasselectedasthetargetcompoundtostudytheinfluenceofnutrientsolutionintermittentsprayingonthebiologicaltricklingfilter.TheFXlN·14MR-O01ProgrammableLogicCont
6、roller(PLC)wasusedtOcontroltheintermittentnutrientsprayingpatternonthehiotricklingfilters.Theoperationconditionsincludingambienttemperature,concentrationoftotalnitrogen,sprayingdensity,spray/stoptimeandmechanismoftheintermittentsprayingbiologicaltricklingfilterwasstudied.Wh
7、engasresidencetimewassetas40.70s,theresultsshowedthattheoptimumconditionwascontrolledatthesprayingdensityof4.5L/(m·min)andthespray/stoptimeof2min/4min.Whenthetolueneinletloadingratewaslessthan88.29g/(m·h)。theremovaleficiencywashigherthan95.0%.Whilethetolueneinletloadingrate
8、was186.04g/(m·h),theremovaleficiencywasabout87.6%;themaximumeliminationcapacityoft
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