2013•Journal of Chongqing University of Science and TechnologyRequires access
Study on Nutrient Release from Sediments of Urban Lake
Sheng Di, Zhu Lanbao, Bo Pang
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Abstract
The temperature,pH,disturbance factors of urban lake sediment nitrogen,phosphorus release influence are investigated in simulating condition.The results show that in the test set conditions,elevated temperature can promote sediment nitrogen,phosphorus release.Overlying water in acidic or alkaline conditions are conducive to sediment nitrogen release.The stronger acidic is,the bigger the influence is.Alkaline conditions of nitrogen release quantity is greater than the acidic conditions,under the condition of neutral nitrogen release quantity minimum.Alkaline is conducive to the release of phosphorus.Acidic conditions,the phosphorus release quantity has not obvious difference.Neutral condition,the phosphorus release a quantity to the minimum.Disturbance can obviously improve the sediment of nitrogen and phosphorus release quantity,and with the increase of the turbulence intensity increases.