| 引用本文： |
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吴家前,张健,李英花.空气吹脱法在生活垃圾渗滤液氨氮脱除中的实验研究[J].广西科学,2010,17(3):274-276. [点击复制]
- WU Jia-qian,ZHANG Jian,LI Ying-hua.Ammonia Nitrogen Removel from Municipal Landfill Leachate by Air Stripping[J].Guangxi Sciences,2010,17(3):274-276. [点击复制]
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| 摘要: |
| 采集生活垃圾填埋场渗滤液样品,用10%石灰乳和10%NaOH溶液调节pH值至8.0,9.0,10.0,11.0,12.0,13.0后,用鼓风空气吹脱法进行氨氮脱除实验。结果表明,在常温、曝气量为10L/min、曝气强度为30m3/(m2·h)条件下,将渗滤液的pH值提高至10.0~11.0后再进行吹脱,有利于氨从渗滤液中逸出,吹脱后pH值下降为9.0。当pH值为11.0,气液比为2000~2500,吹脱时间为150min时,渗滤液中的氨氮去除率大于90%。渗滤液中氨氮的去除与CODcr的去除无直接关系。 |
| 关键词: 氨氮 渗滤液 生活垃圾 空气吹脱 |
| DOI： |
| 投稿时间：2010-03-01修订日期：2010-03-31 |
| 基金项目:广西科学研究与技术开发计划项目(桂科攻0816002-5);广西研究生教育创新计划项目(桂学位[2008]14号)资助。 |
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| Ammonia Nitrogen Removel from Municipal Landfill Leachate by Air Stripping |
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WU Jia-qian1, ZHANG Jian2, LI Ying-hua2
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| (1.Guangxi Zhuang Autonomous Region Environmental Monitoring Station, Nanning, Guangxi, 530022, China;2.School of Environment, Guangxi University, Nanning, Guangxi, 530004, China) |
| Abstract: |
| Collecting municipal landfill leachate and dajust pH value to 8.0, 9.0, 10.0, 11.0, 12.0, 13.0, respectively by 10% CaCO3 and 10% NaOH, then using air stipping removal ammonia nitrogen.The experiment was carried out in room temperature and under the aeration intensity of 30m3/(m2·h).The result shows that air stripping is more effective at a high pH value (10.0~11.0) because the saturated ammonia tends to release, thereafter the pH value descends to 9.0.When pH=11.0 and gas-liquid ratio around 2000~2500, the ammonia nitrogen removal rate surpass 90% after 150-min stripping.The ammonia nitrogen removal has no direct relation with CODcr removal. |
| Key words: ammonia nitrogen landfill leachate municipal solid waste air stripping |
