摘要
富营养化是指由于人类活动、水体中营养物质增加,而导致植物过量增长和整个水体生态平衡改变的一种污染现象。氮磷含量超标是其主要原因。因此,脱氮除磷成为污水处理重要环节。文章总结了目前国内外的多种方法脱除氮磷,物理、化学以及生物法等,并对方法的优缺点和前景进行了分析。对一些可广泛应用于自然水体和污水处理厂脱氮除磷工艺做了重点介绍。
Eutrophication refers to the pollution phenomenon that excessive plant growth and changes in the ecological balance of water caused by human activities and increased nutrients in water. Excessive content of nitrogen and phosphorus is the main reason. Therefore, the removal of Nitrogen and phosphorus has become an important process in the sewage treatment. This paper summarized the physical, chemical and biological methods at home and abroad of nitrogen phosphorus removal, besides, it analyzed the advantages and disadvantages of the methods and the prospects. Some methods which can be widely used both in natural water and sewage nitrogen phosphorus removal process are introduced emphatically.
出处
《金属世界》
2009年第C00期83-87,共5页
Metal World
基金
北京市自然科学基金项目(No.8063029)
北京市教委产学研项目
北京科技大学大学生创新基金
关键词
富营养化
污染现状
氮磷脱除工艺
前景分析
water eutrophication
pollute situation
nitrogen and phosphorus removal
prospect analysis
