LED灯带补光条件下苦草对氮磷营养盐去除动力学研究

 

摘要： 比较三种不同的职称论文发表光照条件下，苦草对城市径流初期雨水中的氮磷去除效果，并采用一级反应动力学模型进行模拟。结果表明，在LED灯带补光（水下光照强度950-1000lux）条件下，苦草对氮磷的去除率和去除速率均显著高于黑暗组（10lux）和正常组（450-500lux）。相比较黑暗组，补光组在TN，NH3-N，TP去除率上分别增加了26.1%，34.5%，20.6%，去除速率分别提高了0.88倍，1.92倍，1倍。

说明适当的补光手段对于苦草去除氮磷营养物质有促进作用，可作为实际水生态修复工程上的参考。
 

关键词： 苦草；去除率；一级反应动力学
 

FU Guokai*， PAN Chengyong， SHI Xiaofeng

（  Key Lab of Three Gorges Reservoir Region's Eco-Environment,Ministry of Education,Chongqing University；  ）

Abstract： Compared purification efficiency of Vallisneria natans on the early stage of urban runoff rainwater under three different light conditions, and used the first order reaction model to simulate. The results showed that, Under the condition of the LED lighting(950-1000lux), the removal efficiency and removal rate of nitrogen and phosphorus were significantly higher than the dark group(10lux)and the normal group(450-500lux). Compared with the dark group, the removal efficiency of TN, NH3-N, TP increased 26.1%, 34.5%, 20.6% respectively. The removal rate of them improved 0.88 times.1.92 times, 1 times. This explained that, there was promoting effect when appropriate light supplement was used to remove nitrogen and phosphorus nutrients .This can be taken as reference to the actual water ecological restoration project.

Keywords： Vallisneria natans; removal efficiency; the first order reaction?????