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不同季节潜流与表流人工湿地氨氮去除动力学对比研究 被引量:3

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摘要 研究了一个由自由表面流和水平潜流二级组合串联工艺处理污染河水,应用一级动力学模型,考察在恒定水力负荷的条件下温度及污染负荷对氨氮去除速率的影响。研究结果表明:系统对氨氮去除速率与温度呈正相关,四个串联湿地系统单元体积去除速率常数KV20分别为1.135、1.939、1.686及2.682,潜流湿地单元Kv20值高于自由表面流。在潜流单元温度系数θ值最高可到达1.187,然而氨氮的去除效率与温度呈负相关,主要原因在于进水氨氮负荷随季节周期变化的缘故,季节变化直接影响着系统的进水温度及进水氨氮负荷,进而决定了湿地系统对氨氮的去除速率。
作者 修海峰
出处 《吉林农业(学术版)》 2011年第8期70-72,共3页
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