摘要：

污水经处理后作为城市中水，得到广泛的关注。作为电厂循环冷却水的补充水，对其氨氮含量要求严格。实验的目的是利用待冷却水的废热提高中水温度，使其有利于吹脱氨氮；利用电厂现有的冷却塔设施，对低浓度的含氨氮中水进行吹脱脱氮。实验结果表明，水经处理后氨氮质量浓度可降到1.05-1.98 mg/L，采用本实验的补水处理方式，城市中水可以作为电厂冷却水的补充水。

关键词: 氨氮吹脱, 电厂循环水, 冷却塔

Abstract:

Discussions have been made on the regenerated water used in cities after the treatment of wastewater. As make-up water for the cycling cooling water in the power plant, regenerated water should strictly control the concentration of NH₃-N. The present experiment aims at increasing the temperature of regenerated water by using the waste heat in the cooling water going to the cooling tower. The purpose of the practice is to make it easy for air stripping and to denitrogenize from the regenerated water with lowconcentration of ammonia-nitrogen by exploring the equipment of the current cooling tower of the power plant. The result of the experiment indicates that after the treatment, the concentration of ammonia-nitrogen can be reduced to 1.05-1.98 mg/L. It can be concluded that by adopting the treatment of the present experiment, urban regenerated water can be used as make-up water for the cooling water in the power plant.

Key words: denitrogenation byair stripping, circulatingcoolingwater in power plants, coolingtower

中图分类号: 

• X703.1