摘要
依据准好氧填埋和厌氧填埋的原理,构建了四个大型模拟填埋场,其中两个进行渗滤液回流,研究了填埋结构对渗滤液回流效果的影响。结果表明,准好氧填埋渗滤液回流有利于渗滤液中COD、NH3-N浓度的下降,其下降率分别为95.8%和89.8%,下降率高于厌氧填埋,且下降较为平稳;厌氧填埋渗滤液回流虽有利于渗滤液中COD浓度的下降,下降率为82.2%,但在回流初期浓度有升高的现象,NH3-N却持续累积;增加渗滤液在填埋层中的停留时间能提高回流的效果。
This paper presents a pilot experiment involving four plots of landfill with different structures for examining the leachate recirculation effectiveness of different conditions, i.e. semi-aerobic and anaerobic, formed respectively due to the different structures of landfill. Results shows quasi-aerobic condition in general is better than the anaerobic in terms of COD and ammonia removals with leachate being recirculated, and the longer retention time of recycled leachate would help enhance recirculation effects.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2006年第4期71-73,共3页
Environmental Science & Technology
基金
国家"十五"863计划课题(2001AA644010)
关键词
准好氧
填埋结构
回流
渗滤液
semi-aerobic
structure of landfill
recirculation
leachate
