| 丝光沸石去除生活污水中氨氮的实验研究 |
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| 引用本文： | 赵玲玲,陈英文,沈树宝.丝光沸石去除生活污水中氨氮的实验研究[J].环境科学与技术,2007,30(9):9-10,17. |
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| 作者姓名： | 赵玲玲 陈英文 沈树宝 |
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| 作者单位： | 南京工业大学制药与生命科学学院,南京,210009 |
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| 基金项目： | 国家高技术研究发展计划(863计划)
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江苏省自然科学基金
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江苏省省级污染防治专项资金资助项目 |
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| 摘 要： | 实验研究了丝光沸石对生活污水中氨氮的吸附行为。结果表明,在投加25g/L丝光沸石,吸附时间40min,pH=6.2的条件下,丝光沸石对浓度为50mg/L的氨氮模拟废水其去除率可达80%以上。Ca~(2+)、Mg~(2+)竞争阳离子在一定程度上抑制丝光沸石对氨氮的吸附。丝光沸石对氨氮的吸附符合朗格缪尔吸附等温线。同时,可用饱和氯化钠溶液对沸石进行再生,此解吸液可重复利用。将丝光沸石用于实际生活污水中氨氮的处理,其去除率达到80%以上。
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| 关 键 词： | 丝光沸石 生活污水 氨氮 吸附 |
| 文章编号： | 1003-6504（2007）09-0009-03 |
| 修稿时间： | 2007-04-172007-07-19 |
Removal of Ammonia Nitrogen in Municipal Wastewater by Mordenite |
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| ZHAO Ling-ling,CHEN Ying-wen,SHEN Shu-bao.Removal of Ammonia Nitrogen in Municipal Wastewater by Mordenite[J].Environmental Science and Technology,2007,30(9):9-10,17. |
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| Authors: | ZHAO Ling-ling CHEN Ying-wen SHEN Shu-bao |
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| Abstract: | Adsorption of ammonia nitrogen by mordenite was studied. Results indicated that total removal efficiency of ammonia nitrogen in simulated wastewater could reach above 80% in the conditions of mordenite 25g/L,contact time 40min,pH 6.2.Calcium/magnesium cations restrained the adsorption in a certain extent.The adsorption behavior of ammonia nitrogen by mordenite fits the Langmiur isotherm well.Mordenite can be regenerated by saturated solution of sodium chloride.Total removal efficiency of ammonia nitrogen could be up to 80% in the treatment of real municipal wastewater. |
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| Keywords: | mordenite municipal wastewater ammonia nitrogen adsorption |
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