垃圾渗滤液含大量难降解有机物，氨氮浓度高，但C/N比低，生物脱氮困难。目前大多采用双膜法等去除难降解有机物和投加大量碳源脱氮，处理成本高。因此亟需对现有工艺提标改造，研究不外加碳源和低成本去除难降解有机物的新工艺。本项目针对渗滤液目前处理瓶颈，采用短程硝化-厌氧氨氧化生物处理工艺，实现自养深度脱氮; 利用渗滤液中难降解有机物作为反硝化碳源去除系统中残余亚硝态氮和硝态氮，提高有机物和总氮去除率，实现深度除碳脱氮，最大限度降低处理成本，并研究其作为反硝化碳源利用机理，解决目前瓶颈问题。.本项目拟通过宏观、微观结合，研究垃圾渗滤液全程自养深度脱氮机理、厌氧氨氧化菌富集影响因素和抑制机制等，明确最佳工艺参数，稳定提高厌氧氨氧化脱氮效率；对渗滤液中难降解有机物进行精准定量；采用分子生物学技术分析以难降解有机物为碳源反硝化的微生物种群结构等，为垃圾渗滤液生物深度处理提供理论支持。

Landfill leachate is defined as a wastewater with a high concentration of refractory organics and ammonia. Biological nitrogen removal is difficult because of low C/N ratio of leachate. Most of current landfill leachate treatment is focused on refractory organic removal by using double membrane method, etc., and nitrogen removal with additional carbon source, which are costly. Therefore developing new technology is urgently needed to upgrade and reconstruct the current process, for low cost treatment of refractory organics without extra organic carbon source. According to the current bottleneck, this study will be focused on the partial nitrification and anammox to realize the complete remove of the total and ammonia nitrogen without additional carbon source. The refractory organics is treated as carbon source to improve the organic matter removal efficiency to achieve carbon and nitrogen removal with reduced cost..Through the combination of macro- and micro-perspective, landfill leachate autotrophic nitrogen removal mechanism, the anammox enrichment influencing factors and inhibition mechanism will be investigated. The optimal process parameters will be elucidated to improve the stability of anammox nitrogen removal efficiency. The refractory organics as a carbon source for denitrification will be accurate quantitative. The molecular biological technology is adopted in order to find population structure of the denitrification microorganisms with refractory organics as carbon source. This study is meaningful to provide theoretical basis for advanced biological treatment of landfill leachate.