期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：108
期号：2
页码：022031
DOI：10.1088/1755-1315/108/2/022031
语种：English
出版社：IOP Publishing
摘要：NH4+-N has become the main pollution factor affecting the surface water quality in China. Based on the theory of photolysis, the feasibility of photolysis removing NH4+-N in surface water is studied. The effects of pH, CaO2 content and photolysis time on removal rate of NH4+-N are studied. The actual study is based on Laboratory studies results. Experimental results show: When the pH<7, photolysis can increase the NH4+-N content. And when pH>8, the photolysis can greatly reduce the NH4+-N content in water. CaO2 can greatly remove NH4+-N. The removal rate of NH4+-N increased with the increase of photocatalytic time. When irradiated with UV light for 108 hours or the sun is irradiated for about 40 days, NH4+-N content can be reduced from 4mg/L to 0.5mg/L under the optimum experimental conditions. Adjusting the pH of surface water is the most important condition for controlling NH4+-N content.
