摘要
两年实际运行表明,慢速渗滤系统对一沉进水中的TK-N、NH_4-N和T-P的总去除率达95％以上,对氧化塘进水中这三种组分的总去除率在80％以上。本系统对氮磷的处理效果优于二级生化处理,达到国外同类工艺水平。两种进水中NO_3-N浓度低于0.5毫克/升,而出水浓度增加,但大多数在10毫克/升以下,总均值<2毫克/升,远在我国饮用水NO_3-N标准(20毫克/升)以下。几种作物对氮磷有较高的吸收去除率。
Galvanized steel pipe has been widely used as indoor tap water pipe. The tap water which contains several milligrams NO_3^--N per litre is detained in the pipe for some time, the NO_2^- content will increase greatly; if the tap water is detained in pipe more than one night, the NO_2^- content will increase more than a hundred times as the original content. Meanwhile the relationship between tap water detained time and NO_2^- content and the reason of NO_2^- production are revealed.
出处
《环境污染与防治》
CAS
CSSCI
CSCD
北大核心
1991年第5期18-22,共5页
Environmental Pollution & Control
