晚期渗滤液有机物、氨氮和硫酸盐浓度高，难处理，目前还鲜有工艺对其进行同步脱氮除硫。基于此，本项目针对处理技术瓶颈，以实际晚期渗滤液为研究对象，采用亚硝酸盐型（Nitrite-Anammox）和硫酸盐型厌氧氨氧化（Sulfate-Anammox）耦合实现有机物、氨氮和硫酸盐的同步、经济和高效去除。.本工艺主要创新点如下：提出并建立Nitrite-Anammox和Sulfate-Anammox耦合实现晚期渗滤液自养深度脱氮除硫系统，拟获得同步自养脱氮除硫稳定、协调运行的最佳工艺参数、控制条件、影响和抑制因素；通过工艺参数与分子生物学结合，拟获得富集适于处理晚期渗滤液的Nitrite-Anammox和Sulfate-Anammox共生的功能菌群的新方法，实现优势互补，Sulfate-Anammox不受有机物浓度影响，不需短程硝化。两种类型功能菌群的耦合将强化其稳定性和竞争能力，提高脱氮效率。

Mature landfill leachate contains high concentrations of organic matter, ammonia nitrogen and sulfate. Thus, it is difficult to treat mature landfill leachate. At present, there are few processes for simultaneous nitrogen and sulfate removal. According to the above reasons, this project aims at the bottleneck of processing technology for mature landfill leachate at present, which takes the actual mature landfill leachate as the research object, and the coupling of Nitrite-Anammox and Sulfate-Anammox was used to realize organic matter ammonia nitrogen and sulfate removal simultaneously..The main innovations of this process are as follows: Deep advanced mature landfill leachate autotrophic nitrogen and sulfate removal system is established by the coupling of Nitrite-Anammox and Sulfate-Anammox to obtain the optimum technological parameters, control conditions, influence and restraint factors of synchronous autotrophic ammonia nitrogen and sulfate removal simultaneously with stable and coordinated operation. Combining process parameters with molecular biology technology, the new method for achieving nitrite-anammox and sulfate-anammox symbiotic functional microflora which are suitable for treatments of mature landfill leachate is obtained. The symbiosis of two kinds of bacteria have realized complementary advantages. The concentration of organic matter cannot inhibit the activity of sulfate-anammox bacteria. The partial nitrification is not required for sulfate-anammox. Coupling of two types of functional bacteria will enhance their stability and competitiveness, and improve nitrogen removal efficiency.