生物反应器填埋场的发展及应用研究

缩短垃圾稳定化时间,并有效地收集和处理渗滤液及填埋气体,是促使传统卫生填埋法向生物反应器填埋场发展的主要因素。生物反应器填埋场通过回灌渗滤液等控制手段,改善填埋场内部微生化环境,加速填埋场稳定化进程。生物反应器填埋场的关键在于渗滤液收集系统、防渗系统、气体收集系统和渗滤液回灌系统。一些在运行的全规模生物反应器填埋场证明了这种操作方式能加快垃圾降解和填埋气体的产生,减少渗滤液处理量。然而还有一些经济和技术上的不确定性,包括持久有效性、压实度和氧化-还原环境等因素都需要进一步研究。

RESEARCH ON DEVELOPMENT AND APPLICATION OF BIOREACTOR LANDFILL TECHNOLOGY

Reducing the duration of garbage stabilization,and collecting leachate and landfill gas effectively is the main factor in turning formal sanitary landfill into bioreactor landfill technology.The bioreactor landfill can improve the biochemical environment in landfills and accelerate stabilization process,primarily through the addition of leachate.The key elements of a bioreactor landfill include leachate collecting system,liner system,landfill gas collecting system and leachate introduction system.Some running full-scale bioreactor landfills have proved that leachate recirculation can accelerate waste degradation and landfill gas generation,which can reduce quantity of leachate to be treated.However,technical and cost incertitudes,including sustainability,compaction and redox environment need further research.