城市污水生物脱氮工艺研究

Research on Biological Nitrogen Removal Process of Urban Wastewater

我国是一个干旱、严重缺水的国家,随着城市化率的不断提高,污水量大幅度增加,自然水体富营养化日趋严重,符合标准的可供水源急剧减少,水资源短缺已成为制约我国社会经济发展的瓶颈,降低排水中氮的含量是控制水体富营养化的关键,本文全面总结了城市污水生物脱氮工艺研究现状,并分析了目前生物脱氮工艺存在的问题及生物流化床工艺的特点,指出生物流化床技术是值得深入研究的、高效节能的废水处理方法。

China is drought and lack of water strictly, with the development of the cities in China, the a- mount of wastewater is going up greatly and eutrophication of natural waters is severe, the amount of water resources measuring up the standard reduces rapidly. Economy development is limited by the shortage of water resources. The key issue for controlling eutrophication is improving the wastewater treating rate and reducing the amount of nitrogen in the effluent. This paper summarized the research status and analyzed the disadvantages of biological nitrogen removal at present. Also this paper studied the characteristics of biologi- cal fluidized block and indicated that the process is a wastewater treatment method with high efficiency and is worthy of study.