准好氧填埋工艺氧气浓度对甲烷与二氧化碳浓度的影响研究
- Allen
-
0 次阅读
-
0 次下载
-
2020-04-29 12:57:48
文档简介:
第19卷第6期环境科学研究Resea~chofEnvironmentalSciencesVo1.19,No.6,2006准好氧填埋工艺氧气浓度对甲烷与二氧化碳浓度的影响研究张正安,黄启飞,屈明,王琪1.西南大学资源环境学院,重庆4007152.中国环境科学研究院,北京100012摘要:构建了准好氧填埋模拟装置,在其产气相对稳定期间,测定填埋装置内不同点位的(02),(cH4)和(c02),并用数学模型对(02)与(cH4)和9(C02)之间的关系进行拟合.结果表明:随着(0)的增加,上层(cH4)呈对数规律下降,而(c0)呈线性规律下降;中层9(cI~)和(c0)均呈指数规律下降;下层(cH4)呈指数规律下降,而(CO)先保持在34%左右波动,当(02)大于1.8%后呈指数规律下降.上层主要为好氧带,(cH4)低于(C02);中层主要为兼氧带,当(0)小于5.8%时(cH4)高于(C02),而当(02)大于5.8%时(cH4)低于(c0);下层主要为厌氧带,当(02)小于2.8%时(cH4)高于(CO),而当(02)大于2.8%时(cH4)低于(CO).关键词:填埋;准好氧;02;c;填埋气中图分类号:X705文献标识码:A文章编号:1001—6929(2006)06—0081—05ResearchontheInfluenceofOxygenDioxideConcentrationsinSerni—AerobicConcentrationonMethaneandCarbonLandfilIZHANGZheng.an一,HUANGQi.fei,QUMing,WANGQi21.CollegeofRe~ureesandEnvironment,SouthwestUniversity,Chongqing400715,China2.ChineseResearchAcademyofEnvironmentalSciences,Beijing100012,ChinaAbstract:Semi—aerobiclandfilwassetup.Duringthesteadystageoflandfilgasproduction,theconcentrationsofCH4,CO2and02indiferentpointsweredetected,andthecorrelativitybetween02concentrationandCH4,CO2concentrationsweresimulatedwithnmthematicMmode1.Theresultsshowedthat:with02concentrationincreasing,theCconcentrationdeclinedlinearlyandtheCo2concentrationdeclinedexponentialyinupperlayer;theconcentrationsofCthandCO2bothdeclinedexponentiallyinmiddlelayer;inbottomlayertheCH4concentrationwasdeclinedexponentially,butthatofC02keptfluctuatedaround34%initially,andthendeclinedexponentially.TheCH4concentrationWaslowerthanthatofCO2inupperlayer;inmiddlelayertheCH4concentrationWashigherthanthatofCO2when02concentrationWaSlessthan5.8%,theCH4concentrationWaslowerthanthatofCO2when02concentrationWasmorethan5.8%;InbottomlayertheCH^concentrationWashigherthanthatofC02when02concentrationWaslessthan2.8%,theCH4concentrationWaslowerthanthatofCO2when02concentrationwasmorethan2.8%.Keywords:landfill;semi—aerobic;oxygen;methane;landfillgas准好氧填埋是20世纪80年代兴起的新型生活收稿日期:2006—04—02基金项目:国家高技术研究发展计划(863)项目(2001AA644010);国家自然科学基金资助项目(50508042)作者简介:张正安(1978一),男,河南信阳人,硕士研究生.*责任作者垃圾填埋技术,具有改善渗滤液水质、
评论
发表评论