摘要：

以改性丝竹作为生物载体和缓释碳源构建了好氧挡板式生物膜反应器（ABBR），研究了其对城市污水处理厂尾水中氮素化合物的去除效果和特性。结果表明：当HRT为8 h时，TN和NO₃^--N去除率分别可达66.58%~75.23%和50.96%~66.43%。以丝竹为单一碳源，NO₃^--N去除速率达2.13 mg/（L·h）。相比于弹性立体填料，以改性丝竹作为生物载体可以获得较高的NO₃^--N去除率和较低的NO₂^--N积累率。

关键词: 改性丝竹, 固相反硝化, NO₂^--N积累, 缓释碳源, 生物脱氮

Abstract:

An aerobic baffled biofilm reactor(ABBR) was developed with modified filamentous bamboo as biocarriers and slow released carbon source, the removal effects and characteristics of nitrogenous compounds from effluent of municipal wastewater treatment plants by which were investigated. The results showed that the removal rates of TN and NO₃^--N reached 66.58%-75.23% and 50.96%-66.43%, respectively, when HRT was 8 h. The removal rate of NO₃^--N was 2.13 mg/(L·h), when modified filamentous bamboo was used as single carbon source. Compared to elastic packing, the biological nitrogen removal system with filamentous bamboo could obtained higher NO₃^--N removal rate and lower NO₂^--N accumulation rate.

Key words: modified filamentous bamboo, solid phase denitrification, NO₂^--N accumulation, slow released carbon source, biological nitrogen removal

中图分类号: 

• X703