CANON工艺处理垃圾渗滤液中的高浓度氨氮

CANON process in treating high concentrated ammonium of leachate

CANON工艺是在限氧的条件下 ,利用完全自养性微生物将氨氮和亚硝酸盐同时去除的一种方法 ,从反应形式上看 ,它是SHARON和ANAMMOX工艺的结合 ,因此可以在同一个反应器中进行。深圳市下坪固体废弃物填埋场渗滤液处理厂通过一年多的运行 ,发现溶解氧控制在 1mg/L左右 ,进水氨氮 <80 0mg/L ,氨氮负荷 <0 4 6kgNH+ 4/(m3·d)的条件下 ,可以利用SBR反应器实现CANON工艺 ,氨氮的去除率 >95 % ,总氮的去除率 >90 %。

CANON process can remove ammonia and nitrite simultaneously at oxygen-limited conditions by complete autotrophic organisms. From the view of reaction, it combined the SHARON and ANAMMOX processes, so it can be taken place at one reactor. Through more than one year's running, it is found that CANON process is taken place in the leachate treatment plant of ShenZhen Xiaping Municipal Solid Waste Landfill Site, at the conditions that DO is about 1 mg/L, ammonia concentration less than 800 mg/L and ammonia load less than 0.46 kgNH + 4/(m 3·d). The results show that ammonia and total nitrogen removal efficiency is above 95% and 90% respectively.