Influence on shallow ground water by nitrogen in polluted river

• Published in: Journal of coal science & engineering, China China, 2008-03, Vol.14 (1), p.103-108
• Main Author: 李志萍 曹连海 陈肖刚 沈照理 钟佐燊
• Format: Article
• Language: English
• Subjects: Earth and Environmental Science; Earth Sciences; Geochemistry; Geology; Geophysics/Geodesy; Geotechnical Engineering & Applied Earth Sciences; Mechanical Engineering; 地下水; 环境保护; 环境污染
• ISSN: 1006-9097; 1866-6566
• DOI: 10.1007/s12404-008-0021-5

The main purpose of the research is to discuss the influence on ground water by NH4-N in polluted river and river bed. In the lab-scale experiment three kinds of natural sand were chosen as infiltration medium, and polluted rivers were simulated by domestic sewage, after 10-month sand column test it was found that NH4-N came to adsorption saturation on the 17th day in coarse sand and on the 130-140th day in medium sand, then had a higher effluent concentration because of desorption. It is concluded that NH4-N easily moved to ground water. When the concentration of NH4-N in Liangshui River were 46.86, 26.95 mg/L, that in groundwater are less than 1.10 mg/L. It is found that Liangshui River have a little influence on groundwater because of bottom mud, thickness and character of the infiltration medium under the river bed and seepage quantity of river water. Clean water leaching test states that after the silt is cleared away and clean water is poured, NH4-N in the penetration media under the polluted river is obviously carried into ground water, and ground water is polluted secondly.