不同生态河道基质材料对氮磷的吸附对比研究  

Comparison study on adsorption nitrogen and phosphorus for different substrates materials in ecological river

作　　者：方升华[1] 

机构地区：[1]北京市北运河管理处,101100

出　　处：《北京水务》2006年第4期27-30,共4页Beijing Water

摘　　要：生态河道构建是一种有效的河流水体修复技术,选择合适的基质材料构建生态河道,能改善其对污染物质的净化效果。对比研究了砾石、砂子和沸石3种不同生态材料在不同氮磷水平下对氮磷的强化吸附性能,并对其吸附机理进行了初步探讨。试验结果表明,Freundlich等温吸附方程能较好地描述3种材料的吸附性能,对于氮、磷的饱和吸附能力依次为沸石>砾石>砂子。开发利用吸附能力较强的砾石或是利用吸附能力更强的沸石作为生态河道基质材料,是构建生态河道的一种有效措施。Constructing ecologic river is an effective technique to restore river water quality. Suitable substrate materials can improve the purifying polluted performance. In this paper, the adsorption nitrogen and phosphorus ability of gravel, sand and zeolite in different concentration was investigated respectively, and the mechanism of adsorption was discussed. The results show that Freundlich adsorption isotherms can delineate the adsorption characteristics of the three substrates. On the most ability of adsorption, the gravel is larger than sand but smaller than zeolite. So using gravel and zeolite as the substrates is an effective way to improve the performance of ecological river.

关 键 词：生态河道 生态材料 吸附 氮磷 

分 类 号：X522[环境科学与工程—环境工程]