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首页> 外文期刊>Journal of Sustainable Development >Reduction of Greenhouse Gas Emissions in Vietnam through Introduction of a Proper Technical Support System for Domestic Biogas Digesters
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Reduction of Greenhouse Gas Emissions in Vietnam through Introduction of a Proper Technical Support System for Domestic Biogas Digesters

机译：通过为家用沼气池引入适当的技术支持系统，减少越南的温室气体排放

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A domestic biogas digester (BD) is a household-sized system that produces biogas from organic waste under anaerobic conditions. By substituting conventional cooking fuel with biogas, greenhouse gas (GHG) emissions can be reduced. In addition, improved livestock manure management from use of the BD system can lead to further GHG emission reductions. However, because the main component of biogas is methane (CH4), with 25 times the global warming potential of carbon dioxide (CO2), leakage of biogas from the BD system can counteract the benefits of this system. Thick vinyl-type BDs were introduced to farming households in a rural area of Vietnam’s Mekong Delta in an effort to reduce GHG emissions as a Clean Development Mechanism project. In this project, selected farmers were trained as Key Farmers (KFs). These farmers acquired knowledge about appropriate techniques relating to the BD system and provided technical support to households. Then, biogas usage was monitored in the households where the BD technology was installed. The average proportion of operational BDs reached as high as 92.3%. Therefore, the technical support system provided by the KFs was regarded as practical and effective. Additionally, leakage of biogas from the BD systems was monitored. The average leakage was estimated at 8% of the produced biogas. Including emission reductions from improved livestock manure management, the total GHG emission reductions from the introduction of BD systems was calculated as 2.95 tonnes of CO2 per year per household. Overall, the emission reduction effects can only be achieved with appropriate installation, operation, and maintenance of the BD systems.
机译：家用沼气池（BD）是一种家庭规模的系统，可在厌氧条件下从有机废物中产生沼气。通过用沼气代替传统的烹饪燃料，可以减少温室气体（GHG）的排放。此外，通过使用BD系统改善牲畜粪便管理可以进一步减少温室气体排放。但是，由于沼气的主要成分是甲烷（CH4），是全球变暖潜力二氧化碳（CO2）的25倍，因此从BD系统泄漏沼气会抵消该系统的优势。越南的湄公河三角洲农村地区的农户采用了厚乙烯型BDs，这是一项清洁发展机制项目，旨在减少温室气体的排放。在这个项目中，选定的农民被培训为关键农民（KFs）。这些农民获得了有关BD系统相关技术的知识，并为家庭提供了技术支持。然后，在安装了BD技术的家庭中监测沼气的使用。业务BD的平均比例高达92.3％。因此，各KF提供的技术支持系统被认为是切实有效的。此外，还监测了BD系统中沼气的泄漏情况。平均泄漏量估计为产生的沼气的8％。包括通过改善牲畜粪便管理而减少的排放量，采用BD系统引入的温室气体总排放量计算为每户每年2.95吨二氧化碳。总体而言，只有通过适当安装，操作和维护BD系统，才能实现减排效果。

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