关于A/O工艺实例脱氮控制的运行实例分析

A Case Analysis of Nitrogen Removal Control in A/O Process

利用珠三角某A/O工艺的H污水处理厂运行数据,分析A/O工艺中运行参数对脱氮效果的影响。通过分析A/O工艺中HRT、DO、内循环回流比、泥龄、污泥回流比、原水C/N对脱氮效果的影响,利用该污水处理厂的运行数据,印证该6个工艺参数在实例运行中的效果。该污水处理厂的脱氮效果比较良好,各项指标特别是氨氮出水远低于其排放标准。

The running data from a sewage treatment plant that located in the Pearl River Delta was used to analyze the effect of operating parameters on nitrogen removal in A / O Process. It extracted six critical parameters,including hydraulic retention time（ HRT）,dissolved oxygen（ DO）,internal circulation reflux ratio,sludge age and the C / N of raw water from the plant＇s running data,in order to analyze their effects on nitrogen removal,as well as their significances in A / O process. This sewage treatment plant has good performance in nitrogen removal,especially the effluent ammonia nitrogen is far below the emission standard.