微污染水源中的氨氮及其处理技术

目前,我国饮用水水源部分呈现微污染特征.根据中国环保总局颁布的<环境状况公报>的近年来数据,可知水体中污染物之一氨氮已不容忽视.文中介绍了水中氨氮的来源、存在形态以及对水质、水处理工艺和人体健康的影响.对比了国内外饮用水标准中对"三氮"的规定,同时建议我国饮用水标准中宜逐步规定饮用水氨氮浓度的限值.并对目前处理微污染水源水中氨氮的曝气法、折点加氯法、离子交换法及生物预处理法等作了讨论.

Ammonia-Nitrogen and Its Treatment in Micro-Polluted Water Source

At present,some water in drinking water sources of China showed micro-polluted characteristics.According to the latest data of Environmental conditions Bulletin issued by Chinese Environmental Protection Bureau,know ammoniac-nitrogen of pollutants has not to be ignored.This paper explained the source,existence appearance of ammonia-nitrogen in water and its impact on water quality,water processing craft and human health.Contrasted the drinking water standards for the "three nitrogen" between in the domestic and foreign,our drinking water standard is also advised to progressively provide concentration limits of ammonia-nitrogen.Aeration,break-point chlorination,ion exchange and biological pretreatment were discussed for ammonia-nitrogen removal from micro-polluted water source.