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Study on the Nitrogen and Phosphorus Deposition Regulation in Sediment and Protecting Strategy of Water Quality in Recycle Wastewater Landscape River in Tianjin Economical and Technology Development Area (TEDA)

Author: ZhangHongFen
Tutor: LiXuQian
School: Jilin University
Course: Environmental Engineering
Keywords: Phosphorus Soluble nitrogen Ammonia Nitrate Sediments Ecological restoration Eutrophication
CLC: X522
Type: Master's thesis
Year: 2005
Downloads: 329
Quote: 1
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Abstract


In this study, the National High Technology Research and Development Program (863 Program ) project \Thesis focuses on exploring through experiments under conditions of high salinity background , physics, chemistry and more common combination of factors under the influence of the interaction system solution and sediment nitrogen and phosphorus migration and transformation mechanism , which reveals landscape of nitrogen , phosphorus deposition law and on this basis propose effective water quality protection strategies for the future urban landscape river of the same type of construction and prevention of eutrophication provide engineering experience and theoretical basis . In the river water and sediment environmental chemistry background depth research and analysis on the basis of this paper, the static experiment of nutrients deposition in research, research results show that the river sediment nutrients nitrogen and phosphorus in water bodies have a certain removal of the role of the deposition and deposition of nitrogen and phosphorus in aqueous solution and purification with background concentrations of nutrients , water conductivity ( total salt content ) , temperature , sediment particle size , pH and other factors. Through analysis of the experimental results , the limitations for the deposition of purification , combined with the actual proposed project : ecological restoration is to protect the water environment, the best way to prevent the occurrence of eutrophication ; take specific purification process is based on ' surface flow wetland purification system ' mainly to strengthen ecological purification process ' mixed flow constructed wetland purification system and pebble biofilm island island purification system ' , supplemented by ecological processes.

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CLC: > Environmental science, safety science > Environmental pollution and its prevention > Water pollution and its control > River
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