SBR新型运行方式下的反硝化脱氮除磷效能

为了提高低碳源污水脱氮除磷的效率,在传统SBR的基础上,通过改变SBR的运行方式和结构,构建了厌氧、好氧和缺氧在同一反应器中不同部位同时进行的反硝化除磷双泥系统。探究SBR工艺新的运行方式下的反硝化除磷脱氮效能,实验表明,在最佳运行工况下,即厌氧(进出水)30 min→上部好氧90 min(下部厌氧90 min)→缺氧50 min→沉淀10 min,系统对COD、氨氮、总氮和总磷的去除率分别达到94%、82.08%、76.78%和95.47%,出水能达到国家污水综合排放一级A标准(GB18918-2002)。

Denitrifying and phosphorus removal performance in dual sludge SBR system

On the basis of the traditional SBR, the denitrifying phosphorus removal two sludge system of anaerobic, aerobic, anoxic in the same reactor in different parts was constructed through modifying the operation mode and the structure of SBR. The aim is to improve the low carbon source for nitrogen and phosphorus removal efficiency. Experimental results show that under the optimum operation conditions, removal rate of COD, ammonia nitrogen, total nitrogen and total phosphorus in the system reached 94%, 82.08%, 76.78% and 95.47%, respectively. Meanwhile, the effluent of the system meets the national sewage comprehensive discharge standard of one class A.