| 赵楠芳,付莎莎,赵金鹏.人工湿地工矿业废渣基质对氨氮的吸附研究[J].江西水利科技,2020,(2): |
| 人工湿地工矿业废渣基质对氨氮的吸附研究 |
| Adsorption of ammonia nitrogen on industrial and mining waste for constructed wetland |
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| DOI： |
| 中文关键词: 人工湿地 基质 氨氮 吸附 |
| 英文关键词: Constructed wetland Substrate Ammonia nitrogen Adsorption |
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| 中文摘要: |
| 通过钛渣、钢渣和炉渣对氨氮的吸附试验，比较分析了3种人工湿地基质对氨氮的吸附特征，探讨了影响基质对氨氮吸附性能的主要因素.结果表明，Langmuir方程描述3种基质的吸附特性比Freundlich方程更为精确，其中钢渣对氨氮的饱和吸附量最大.钢渣和钛渣对氨氮的吸附类型为物理吸附和化学吸附，炉渣对氨氮的吸附类型为物理吸附.3种基质对氨氮的去除率都会随着投放量的增加而增大，但当投放量增加到一定量时，去除率不再随投放量变化；pH值的变化对3种基质吸附氨氮的性能分别存在一个阈值，无论是高于或低于这个阈值，吸附性能都会减弱. |
| 英文摘要: |
| The present study compared the adsorption and removal efficiency of ammonia nitrogen by titanium slag，steel slag and blast furnace slag.The results showed that compared to the Freundlich model，the Langmuir isothermal adsorption model could be used to fit ammonia nitrogen adsorption；the most adsorption capacity of three substrates for ammonia nitrogen was steel slag.Adsorption types of steel slag and titanium slag were physical adsorption and chemical adsorption，but the adsorption type of blast furnace slag was physical adsorption.Removal rates of three substrates for ammonia nitrogen increased with substrates content，but when substrates content increased a certain amount，removal rates would not be changed.The ammonium nitrogen adsorption of three substrates existed thresholds by the change of pH；whether thresholds rise or fall，the adsorption performance would be decreased. |
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