| 4种人工湿地填料对磷的吸附特性分析 |
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| 引用本文： | 刘波,陈玉成,王莉玮,何娟,刘江国,梁勤爽. 4种人工湿地填料对磷的吸附特性分析[J]. 环境工程学报, 2010, 4(1): 44-48 |
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| 作者姓名： | 刘波 陈玉成 王莉玮 何娟 刘江国 梁勤爽 |
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| 作者单位： | 西南大学资源环境学院,重庆,400716;西南大学资源环境学院,重庆,400716;重庆市农业资源与环境重点实验室,重庆,400716;重庆市农业环境监测站,重庆,400020 |
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| 基金项目： | “十一五”国家科技支撑计划项目（2006BAD17B09） |
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| 摘 要： | 采用等温吸附、吸附动力学、填料饱和吸附后磷素释放实验,研究了紫色土、河沙、页岩、石灰岩对磷的吸附特征,结果表明Langmuir和Freundlich等温吸附方程均能很好地拟合各填料对磷的吸附特征,各填料对磷的最大吸附量大小顺序依次为石灰岩(666.67 mg/kg)河沙(500.00 mg/kg)页岩(434.78 mg/kg)紫色土(416.67 mg/kg);从反应速率来看,吸附过程都可分为快、中、慢3个阶段;相对一级动力学方程、双常数方程而言,Elovich方程对4种填料的吸附动力学特征拟合最好,决定系数R~2在0.831～0.966之间;从磷的解吸率来看,各填料释磷大小顺序依次为河沙(4.257%)页岩(3.803%)石灰岩(3.638%)紫色土(2.134%)。综合考察得出,石灰岩更适合作为人工湿地污水除磷的填料。
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| 关 键 词： | 人工湿地 填料 磷素 吸附特性 |
| 收稿时间： | 2009-01-03 |
Phosphorus adsorption characteristics of four substrates in constructed wetland |
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| Liu Bo,Chen Yucheng,Wang Liwei,He Juan,Liu Jiangguo and Liang Qinshuang. Phosphorus adsorption characteristics of four substrates in constructed wetland[J]. Techniques and Equipment for Environmental Pollution Control, 2010, 4(1): 44-48 |
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| Authors: | Liu Bo Chen Yucheng Wang Liwei He Juan Liu Jiangguo Liang Qinshuang |
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| Affiliation: | 1.College of Resources & Environment, Southwest University, Chongqing 400716,China,1.College of Resources & Environment, Southwest University, Chongqing 400716,China;2.Chongqing Key Lab of Agricultural Resources & Environment, Chongqing 400716,China,3.Chongqing Station of Agricultural Environment Monitoring, Chongqing 400020,1.College of Resources & Environment, Southwest University, Chongqing 400716,China,1.College of Resources & Environment, Southwest University, Chongqing 400716,China and 1.College of Resources & Environment, Southwest University, Chongqing 400716,China |
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| Abstract: | The phosphorus adsorption characteristics of four substrates(purples soil,river sands,shale, limestone) in constructed wetland were studied by isothermal adsorption experiment,adsorption kinetics experiment, saturated substrates phosphorus desorption experiment.The results showed that the behaviors of phosphorus adsorption to substrates can well be fitted to both Langmuir and Freundlich isothermal adsorption equations. The phosphorus adsorption capacity of four substrates followed that limestone(666.67 mg/k... |
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| Keywords: | constructed wetland substrates phosphorus adsorption characteristic |
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