摘要
通过填埋模拟柱实验研究了渗滤液原液循环条件下,新鲜垃圾添加污泥(污水生物处理剩余污泥)的填埋方式对填埋层加速进入稳定的甲烷化阶段的影响.结果表明,原液循环条件下,新鲜垃圾添加好氧污泥后填埋(9∶1,湿基质量比),短期(105d)内不能加速填埋层进入稳定的甲烷化阶段;新鲜垃圾添加厌氧生物处理污泥混合后填埋(9∶1,湿基质量比),能够有效地加速填埋层进入稳定的甲烷化阶段,产甲烷滞后时间和甲烷化过程稳定时间分别为13和51d,实验期内(105d)最大产气速率、实际累积产气量分别为1.08L/kg·d和50.03L/kg(以湿垃圾为基准),其主要机理是引入了大量呈颗粒态聚集的甲烷化菌群.
Lab-scale landfill columns were used to study the feasibility of promoting stable methanogenesis of municipal solid waste landfill layers through recirculating raw leachate combined with biological sludge addition. The results show that (1) the process of raw leachate recirculation combined with adding aerobic sludge (the wet weight ratio of MSW to sludge was 9:1) fails to accelerate methanogenesis in short term (105 d), (2) while raw leachate recirculation combined with adding anaerobic sludge (the wet weight ratio of MSW to sludge was 9:1) can effectively fulfill the target, indicated by shorter lag time before methanogenesis and longer stable time in methanogenesis phase (13 d and 51 d respectively), as well as higher gas production rate (maximum: 1.08 L/kg·d, wet waste) and gas production amount (cumulatively 50.03 L/kg, wet waste). Good performance of later scenario lies in inducing great amounts of granular methanogens.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2005年第5期840-844,共5页
Journal of Shanghai Jiaotong University
基金
国家高技术研究发展计划(863)项目(2001AA644010
2003AA644020)
上海市重点学科(环境工程专业)建设项目
