丁爱中等：垃圾填埋场渗滤液地下原位脱氮技术综述1817

和运行比较麻烦，国内尤其是在非典型湿度的多雨和干旱地区还缺少有效的工程应用数据[21,51]。

综上所述，简单列出各中填埋场原位脱氮技术特点如表1所示：

垃圾渗滤液原位脱氮处理技术具有广阔的发展前景。我国垃圾填埋场的建设与渗滤液处理才刚刚起步，渗滤液原位脱氮处理处于摸索阶段，笔者认为研究的主要发展趋势为：

（1）渗滤液的脱氮机理比城市污水水处理中更复杂，随着填埋场结构和填埋方式的不同，有必要对其填埋场内脱氮机理和反应速率进行深入研究以提高脱氮效率，减少渗滤液中氨氮污染问题。

（2）应用原位去除氨氮技术，要考虑渗滤液其它污染物的浓度变化。渗滤液的处理要求能同时有效地处理所有相关污染物，因此有必要针对不同性质和年龄的垃圾渗滤液进行工艺控制优化研究。

（3）生物反应器垃圾填埋系统的设计运行方法还不够成熟，有一些技术问题需要考虑，如pH值、湿度和温度的监控以及供氧、回灌方式和回流速率的选择等。优化对渗滤液中氨氮的去除影响较大的技术参数，以降低处理成本、强化处理效果。

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