Abstract:

Combining the activated sludge method with biofilm method, based on the principles of denitrification and dephosphorization, the double sludge sequence denitrification and dephsophorization treatment process, A ON,has been developed. The effect of the COD/TN changes of domestic sewage on denitrification and dephosphorization is studied emphatically. The results show that stable reaction apparatus is good for strengthening biological denitrification and dephosphorization functions. At the anoxic end, the concentration of phosphorus is less than 1 mg/L, and the concentration of nitrogen is less than 5 mg/L. Its treatment effect is stable,its adaptability to water quality is strong, and it can lower the aerobic requirement. The carbon source competition in denitrification and dephosphorization has been decreased to a greater extent. At the same time, it ensures that nitrified bacteria can be produced steadily.

Key words: sequencing batch biofilm reactor, denitrification, dephosphorization, denitrifying phosphorus removingbacteria

摘要：

活性污泥法与生物膜法相结合,基于反硝化除磷原理,开发出双污泥序批式脱氮除磷处理工艺AON。作者重点研究了生活污水COD/TN比值变化对其除磷脱氮性能的影响。试验结果表明,稳定运行的反应器具有良好的强化生物除磷和反硝化脱氮性能,缺氧结束时体系中磷<；1 mg/L,氮<；5 mg/L。该工艺处理效果稳定,对水质的适应能力强,可以降低好氧需求,较大程度地减少除磷和反硝化对碳源的竞争,同时保证了世代时间长的硝化菌的稳定生长。

关键词: 序批式生物膜反应器, 反硝化, 除磷, 反硝化聚磷菌

CLC Number: 

• X703.1