摘要：

分析了采用AAC氧化沟工艺的城市污水厂污泥上浮的主要原因。认为大量硝态氮进入二沉池并发生反硝化产生N₂是污泥上浮的主要原因，并针对此提出了加大排泥量、降低曝气量等解决方案。

关键词: AAC氧化沟, 污泥上浮, 反硝化

Abstract:

The main cause of floating upward of sludge is discussed. It occurs in a municipal wastewater plant. Large quantity of nitric nitrogen flows into the secondary sedimentation tank which produces N₂ by denitrification, as is believed to be the main cause of floating upward of sludge in this plant. Measures against this problem are put forward, such as increasing the amount of the discharged sludge, decreasing the amount of the aerated air, etc.

Key words: oxidation ditch, floating upward of sludge, denitrification

中图分类号: 

• TU992.3

• X703.1