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1、环境科学研究第21卷第6期ResearchofEnvironmentalSciencesVol.21,No.6,2008准好氧填埋结构渗滤液CODCr衰减规律及模拟研究1,221,332433庞香蕊,黄启飞,汪群慧,王琪,王晓龙,丁世存,金典1.哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨1500012.中国环境科学研究院固体废物污染控制技术研究所,北京1000123.北京科技大学土木与环境工程学院,北京1000834.西北农林科技大学,陕西杨凌710021摘要:建立模拟准好氧填埋场和厌氧填埋场中试试验装置(装置规模110m
2、×115m×118m),并以后者做对照,对渗滤液ρ(CODCr)进行27周监测(每1～2周测1次),研究模拟准好氧和厌氧填埋结构的不同层次空间和底部渗滤液ρ(CODCr)的时空变化规律及降解效果,对2种填埋结构渗滤液CODCr衰减规律原因及差异进行分析.结果表明,准好氧填埋结构空间渗滤液ρ(CODCr)层次差异明显,呈现下层>中层>上层的规律,3层渗滤液ρ(CODCr)在前7周衰减幅度最大,之后表现为小幅度波动下降最后趋于稳定;在27周的监测时间里,准好氧填埋场空间和底部渗滤液ρ(CODCr)一直远低于厌氧填埋场对应层位,基
3、本没有出现厌氧填埋场CODCr累积的现象.对准好氧填埋场上、中、下层和底部渗滤液ρ(CODCr)的衰减规律进行数学拟合发现,27周的拟合曲线与实测数据曲线相关性较好,基本反映了CODCr的衰减规律.关键词:填埋场;渗滤液;CODCr;数学模型中图分类号:X703文献标志码:A文章编号:1001-6929(2008)06-0021-05StudyontheAttenuationRulesandFittedEquationsforChemicalOxygenDemandofSemi2aerobicLandfillLeachate
4、1,221,32433PANGXiang2rui,HUANGQi2fei,WANGQun2hui,WANGQi,WANGXiao2long,DINGShi2cun,JINDian1.CollegeofCivilandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150001,China2.ResearchInstituteofSolidWasteManagement,ChineseResearchAcademyofEnvironmentalScience
5、s,Beijing100012,China3.CivilandEnvironmentEngineeringSchool,UniversityofScienceandTechnologyofBeijing,Beijing100083,China4.NorthwestAgricultureandForestryUniversityofScienceandTechnology,Yangling710021,ChinaAbstract:Simulatedsemi2aerobiclandfillequipmentandanaerobi
6、clandfillequipment(CK)wereinstalledwithscale110m×115m×118minordertoinvestigatetemporalandspatialchangeanddegradationofleachateCODCr,andtoexplorethemechanismofCODCrdecreaseandthedifferenceshownintwoequipments.CODCrconcentrationwasmonitoredfor27weeksandmeasuredonceev
7、ery1～2weeks.TheresultsshowedthatleachateCODCrinsemi2aerobiclandfillequipmentvariedwithspatialdistribution,andshowedunder2layer>middle2layer>upper2layer.Inthethreelayers,leachateCODCrmassconcentrationsignificantlydecreasedinthefirst7weeks;afterthat,CODCrmassconcentr
8、ationdecreasedwithfluctuationandfinallystabilized.Duringthewholemonitoringperiodof27weeks,CODCrmassconcentrationsofspatialandbottomleachateinsemi
