准好氧填埋场作业台阶温室气体CO_2的释放通量研究_杨雪

环境工程2011年第29卷增刊准好氧填埋场作业台阶温室气体CO2的释放通量研究＊杨雪1,2岳波2黄泽春2尹胤2舒新前1杨艳1(1.中国矿业大学(北京)化学与环境工程学院,北京100083;2.中国环境科学研究院固体废物污染控制技术研究所,北京100012)摘要:采用静态箱-气相色谱法测定了河北省某准好氧填埋场作业台阶表面的温室气体CO2释放通量,分析了填埋时期和导气管距离对CO2释放通量的影响。结果表明:导气管附近区域表面的CO2释放量较大,且不同区域的CO2释放通量存在明显差异(最大值和最小值分别278.6和12.5g/(m2·d);同一区域上午、中午和下午的CO2释放通量差异相对较小,但中午和下午高于上午。同时,填埋4、8、12和16个月区域的CO2平均释放通量分别为56.9,70.0,110.2和47.0g/(m2·d),即CO2的释放通量随着填埋龄的增加呈现先增加后逐渐降低的趋势,并在填埋12个月达到CO2释放通量的最大值。此外,各填埋区作业台阶表面CO2释放通量随着距离导气管距离的增加呈指数函数递减的趋势。关键词:准好氧填埋;静态箱/气相色谱法;CO2通量;填埋时间;导气管距离RESEARCHONGREENHOUSEGASCO2EMISSIONFLUXESFROMACTIVETERRACEOFMUNICIPALSOLIDWASTESEMI-AEROBICLANDFILLSYangXue1,2YueBo2HuangZechun2YinYin2ShuXinqian1YangYan1(1.SchoolofChemicalandEnvironmentalEngineering,ChinaUniversityofMiningandTechnology,Beijing100083,China;2.ResearchInstituteofSolidWasteManagement,ChineseResearchAcademyofEnvironmentalSciences,Beijing100012,China)Abstract:Carbondioxideemissionfluxesfromactiveterraceofmunicipalsolidwastesemi-anaerobiclandfillsweredeterminedbythestaticchamber-gaschromatographicmethod,andthentheimpactsoflandfillagesanddistancesfromairpipeoncarbondioxideemissionfluxeswereanalyzed.Astheresultsshown,thecarbondi-oxideemissionfluxesneartheairpipeareawerehigherthantheotherareas,andthesignificantdifferenceswerefoundbetweencarbondioxideemissionfluxesindifferentarea(themaximumandtheminimumwere278.6and12.5g/(m2·d).However,thecarbondioxideemissionfluxesinthemorning,noonandafternooninthesameareahadsmalldifferences,whilethedatainthenoonandafternoonwereslightlyhigherthanthatinthemorning.Moreover,theaveragecarbondioxidefluxesintheregionwith4,8,12and16monthslandfillageswere56.9,70.0,110.2and47.0g/(m2·d),whichmeansthatthecarbondioxidefluxesincreasedwiththelandfillageincreasingfirst,andthendecreasedgradually,andreachthemaximumatthe12thmonthsfi-nally.Inaddition,carbondioxidefluxesfromactiveterracesurfacedecreasedexponentiallywithincreasingdistancesfromtheairpipe.Keywords:semi-aerobiclandfills;staticchamber-gaschromatographicmethod;carbondioxideflux;landfillingage;