摘要
基于前人提出的垃圾填埋场渗滤液渗流模型,通过试验初步提出了评价回灌效果的指标和回灌有效期的概念,并分别考察了回灌水质、渗流参数及填埋深度对渗滤液中污染物浓度、微生物浓度和垃圾土中有机质溶解及降解的影响。分析结果表明,回灌能促进渗滤液中COD浓度的降低并加快垃圾土中有机质的降解;提高垃圾土的溶解速度,有利于减少垃圾土的有机质含量,同时不影响COD浓度的稳定;在相同回灌水质下,填埋越深则回灌的效果越不明显。
Test was made based on the seepage flow model of leachate developed by predecessors, and then the index for evaluation of leachate recirculation efficiency and the term of validity of recirculation were proposed, the influence of the recirculating water quality, seepage flow data, and landfill depth on the concentration of pollutants and microorganism in leachate, and organics dissolution and degradation in landfill was investigated. The analysis result showed that recirculation will contribute to the reduction of COD concentration in leachate and acceleration of organics degradation in landfill, increase of dissolution rate of refuse, and benefit decreasing organics content in landfill without affecting the stabilization of COD concentration. Under the same recirculation condition, the deeper the landfill depth, and the less efficiency the recirculation has.
出处
《中国给水排水》
CAS
CSCD
北大核心
2003年第2期5-8,共4页
China Water & Wastewater
基金
国家自然科学基金资助项目(59878050)
关键词
垃圾
填埋场
渗滤液
回灌
渗流参数
填埋深度
leachate of refuse
term of validity of recirculation
recirculation condition
seepage flow data
landfill depth
