共查询到18条相似文献,搜索用时 171 毫秒
1.
2.
城市生活垃圾填埋场甲烷收集效率研究 总被引:5,自引:1,他引:4
为提高垃圾填埋场CH4收集系统的收集效率,减少CH4的排放,对广州某生活垃圾填埋场CH4收集效率和填埋堆体表面CH4释放速率进行了研究.研究表明:采用US-EPA一级动力学模型计算出2010年该填埋场理论CH4产量为7.22×107m3,估算实际产量为(2.17~2.89)×107m3,实际收集量为1.75×107m3,实际收集量占估算实际产量的60.6%~80.6%.填埋作业面是填埋场主要的CH4排放源,年排放量为0.175×107m3,占实际收集量的10.0%.其中,陈垃圾作业面和新填垃圾作业面CH4的释放速率分别为4.17mol·m-·2h-1和0.29mol·m-·2h-1. 相似文献
3.
生活垃圾填埋气体产量的现场测试及IPCC推荐模型的校验 总被引:3,自引:2,他引:1
为了获得深圳市玉龙坑垃圾填埋场封场后填埋气体的实际产量,采用改进的现场抽气方法分别测定了填埋场内4口抽气井抽气影响区域内填埋气体的产量,计算获得其产甲烷速率分别为14.67×10-5、9.46×10-5、9.55×10-5和4.28×10-5m3/(t.h).据此计算出2005年玉龙坑垃圾填埋场的甲烷产率为322 m3/h,表明该填埋场填埋气体在经济性上已经失去了回收利用价值.采用此实测数据对IPCC推荐模型进行校验,发现垃圾降解的半衰期是影响IPCC推荐模型预测准确性的关键参数.我国城市生活垃圾中可降解有机物以厨余垃圾为主,分解周期较短,垃圾降解的半衰期短于IPCC模型的推荐取值范围.为了准确预测填埋气体的产量,需要在充分调查我国生活垃圾特性的基础上,确定模型参数的合理取值,提高IPCC推荐模型在我国的适用性. 相似文献
4.
5.
6.
7.
8.
《中国环境科学》2017,(4)
在我国南方湿润气候区某高渗滤液水位填埋场开展现场抽气试验,测试了不同的水位埋深、试验井数量和井头负压条件抽气量,评估了该填埋场的填埋气资源化利用情况.固废堆体中的初始渗沥液水位平均埋深约3m,该水位下的填埋气收集率不足30%;不同井头负压和水位条件下竖井的抽气影响范围为8.85~30.53m;该填埋场固废的平均产气潜カ为143.69L/kg,平均产气速率为0.173a~(-1).此外通过调査现场竖井的渗滤液导排情况,掲示了用于降水的空气压缩机和竖井周边固废的渗透系数是影响竖井渗滤液导排效果的主要因素.结合抽气试验和现场调査,提出了提高填埋气收集量的工程措施,通过增设66ロ抽水竖井降低堆体中渗滤液水位,该填埋场的填埋气收集量由2240m~3/h提高至5900m~3/h. 相似文献
9.
单元包封密闭式填埋工艺在阿苏卫垃圾卫生填埋场的探索实践 总被引:3,自引:0,他引:3
针对传统垃圾填埋工艺存在分区作业时间长、填埋气引发臭气污染等问题,结合阿苏卫垃圾卫生填埋场实际情况,采用单元包封密闭式填埋工艺,利用旱季垃圾堤坝进行分区填埋操作、渗滤液导排盲沟作为填埋单元分隔、构建填埋气及渗滤液收集系统等技术措施,有效地实现了雨污分流. 实施单元包封密闭式填埋工艺后,2010年填埋场渗滤液产生总量减少了约76 000 t,比前4 a平均产生量减少了35%;填埋气收集量增加了12×106 m3,收集总量比前4 a平均值增加了139%;臭气排放指标达到GB 14554—1993《恶臭污染物排放标准》二级排放标准. 该工艺的实施可以使填埋场运行管理更加规范. 相似文献
10.
11.
采用IPCC与可生物降解两种预测模型对安徽省2020年城市生活垃圾填埋气甲烷产量进行预测,并分析比较模型预测结果;进而通过填埋气发电项目对安徽省垃圾填埋气二氧化碳减排潜力进行探讨。结果表明:预计到2020年,安徽总的生活垃圾清运量可达到758.9万吨,可产生的生活垃圾填埋气甲烷产量约45.5万吨,若这些甲烷气体不经处理直接排放到大气中,相当于排放约900万吨的CO2,因此,安徽省垃圾填埋气CO2减排潜力巨大,其基于清洁发展机制(CDM)的减排潜力可达1.46×109吨。该研究对促进安徽省CDM项目的开发,充分利用CDM资金促进安徽经济的可持续、健康发展具有一定的指导意义。 相似文献
12.
13.
Kosuke Toshiki Pham Quy Giang Kevin Roy B.Serrona Takahiro Sekikawa Jeoung-soo Yu Baasandash Choijil Shoichi Kunikane 《环境科学学报(英文版)》2015,28(2):178-186
Currently, most developing countries have not set up municipal solid waste management systems with a view of recovering energy from waste or reducing greenhouse gas emissions. In this article, we have studied the possible effects of introducing three energy recovery processes either as a single or combination approach, refuse derived fuel production,incineration and waste power generation, and methane gas recovery from landfill and power generation in Ulaanbaatar, Mongolia, as a case study. We concluded that incineration process is the most suitable as first introduction of energy recovery. To operate it efficiently,3Rs strategies need to be promoted. And then, RDF production which is made of waste papers and plastics in high level of sorting may be considered as the second step of energy recovery.However, safety control and marketability of RDF will be required at that moment. 相似文献
14.
Kosuke Toshiki Pham Quy Giang Kevin Roy B. Serrona Takahiro Sekikawa Jeoung-soo Yu Baasandash Choijil Shoichi Kunikane 《环境科学学报(英文版)》2015
Currently, most developing countries have not set up municipal solid waste management systems with a view of recovering energy from waste or reducing greenhouse gas emissions. In this article, we have studied the possible effects of introducing three energy recovery processes either as a single or combination approach, refuse derived fuel production, incineration and waste power generation, and methane gas recovery from landfill and power generation in Ulaanbaatar, Mongolia, as a case study. We concluded that incineration process is the most suitable as first introduction of energy recovery. To operate it efficiently, 3Rs strategies need to be promoted. And then, RDF production which is made of waste papers and plastics in high level of sorting may be considered as the second step of energy recovery. However, safety control and marketability of RDF will be required at that moment. 相似文献
15.
Kosuke Toshiki Pham Quy Giang Kevin Roy B. Serron Takahiro Sekikaw Jeoung-soo Yu Baasandash Choijil Shoichi Kunikane 《环境科学学报(英文版)》2015
Currently, most developing countries have not set up municipal solid waste management systemswith a viewof recovering energy fromwaste or reducing greenhouse gasemissions. In this article, we have studied the possible effects of introducing three energy recovery processes either as a single or combination approach, refuse derived fuel production, incineration and waste power generation, and methane gas recovery from landfill and power generation in Ulaanbaatar, Mongolia, as a case study. We concluded that incineration process is the most suitable as first introduction of energy recovery. To operate it efficiently, 3Rs strategies need to be promoted. And then, RDF production which is made of waste papers and plastics in high level of sortingmay be considered as the second step of energy recovery. However, safety control and marketability of RDF will be required at that moment. 相似文献
16.
EnvironmentalSciences,Beijing100012,China)Abstract:AstudyonlandfillgasemissioninQingdao,Chinawascarriedout.Theresultsshowedth... 相似文献
17.
在渗滤液回灌基础上,结合垃圾堆体本身为厌氧环境的特性,开发出的生物反应器垃圾堆体渗滤液原位脱氮技术已成为目前的研究热点。文章以从杭州市固体废弃物处理有限公司天子岭填埋场采集的不同填埋龄垃圾为试材,利用系列自制生活垃圾生物反应器模拟装置,通过回灌硝酸盐溶液,探讨了不同填埋龄垃圾在碳源充足情况下的反硝化性能特征。结果表明当垃圾堆体自身降解的有机物量充足时,1~12 a垃圾的反硝化性能均较强,且差异不大;所有反应器在最初的1 h内硝酸盐去除率最高,达70%~92%。这说明开发生物反应器垃圾堆体渗滤液原位脱氮技术具有一定的现实可行性。 相似文献