• 关键词：生物反应器填埋  填埋垃圾组成  渗滤液性质  间歇通风  原位脱氮

• 基金项目：国家高技术研究发展计划(863)项目(No.2003AA644020);国家自然科学基金重点项目(No.50538080)

• 邵立明
• 同济大学环境科学与工程学院, 污染控制与资源化研究国家重点实验室, 长江水环境教育部重点实验室, 上海 200092

• 谷惠丽
• 同济大学环境科学与工程学院, 污染控制与资源化研究国家重点实验室, 长江水环境教育部重点实验室, 上海 200092

• 何品晶
• 同济大学环境科学与工程学院, 污染控制与资源化研究国家重点实验室, 长江水环境教育部重点实验室, 上海 200092

• 摘要：为研究不同的垃圾组成和回灌渗滤液性质对间歇通风填埋层原位脱氮的影响,在固定的间歇通风条件下,对新鲜垃圾填埋渗滤液自身回灌、分别以新鲜和部分稳定渗滤液回灌部分稳定垃圾填埋层的氮转化过程进行了模拟实验.结果表明:新鲜垃圾填埋渗滤液自身回灌的氮溶出率(82.4%)和总去除率(61.4%),高于新鲜和部分稳定渗滤液回灌部分稳定垃圾填埋层;而部分稳定渗滤液回灌部分稳定垃圾填埋层的氮总去除率(58.0%)和渗滤液氮净去除率(32.2%)又高于新鲜渗滤液回灌同样的部分稳定垃圾填埋层(氮总去除率38.2%和渗滤液氮净去除率21.3%).造成这些差异的主要原因是垃圾的生物可降解性,以及填埋层内氮负荷与通风供给的硝化可利用分子氧的比例不同.

• Abstract：In order to study the impact of diverse compositions of refuse and recycled leachate on in-situ nitrogen removal under intermittent aeration conditions,simulated landfill columns were set up to investigate nitrogen conversion.Different columns included a) recycling leachate to produce a fresh refuse layer;b) recycling fresh or c) partially stabilized leachate to partially stabilize the refuse layer.The results indicated that the dissolution rate(82.4%) and total removal rate(61.4%) of nitrogen for the column recycling leachate into fresh refuse were higher than those for the columns recycling fresh or partially stabilized leachate to partially stabilized refuse.The total removal rate of nitrogen(58.0%) and the net removal rate of nitrogen in leachate(32.2%) for the column recycling partially stabilized leachate to partially stabilized refuse were higher than those(38.2% and 21.3%,respectively) for the column recycling fresh leachate to partially stabilized refuse.These differences could be attributed to the different biodegradability of the refuse samples and the different ratios of nitrogen loading in the landfill layer to the available oxygen during the nitrification process.

• Key words：bioreactor landfill  refuse composition  leachate characteristics  intermittent aeration  in situ nitrogen removal

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