| 有机污染物在包气带中迁移转化试验研究 |
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| 引用本文： | 高太忠,黄群贤,刘野,蔡鹤生.有机污染物在包气带中迁移转化试验研究[J].环境工程学报,2004,5(2):42-45. |
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| 作者姓名： | 高太忠 黄群贤 刘野 蔡鹤生 |
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| 作者单位： | 河北科技大学环境科学与工程学院,石家庄,050018;北方设计研究院,石家庄,050011;中国地质大学工程学院,武汉,430074 |
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| 基金项目： | 河北省科技厅博士基金资助项目 ( 995 470 12D)，湖北省废物地质处置与环境保护重点实验室基金资助项目 (HB WDEP990 6) |
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| 摘 要： | 采集一定浓度的有机物废水 ,在试验室内进行了静态吸附、静态降解和动态土柱试验 ,对COD在包气带中迁移转化规律进行研究 ,提出了描述COD在包气带中迁移转化规律的数学模型。结果表明 :包气带对COD的吸附过程是线性的 ,可用亨利吸附模式s =Kdc +s0 表示 ,吸附系数Kd=0 .0 6 93;包气带对COD的降解曲线基本符合一级动力学方程c =c0 e-k1 t,降解系数k1=0 .0 4 99d-1;弥散试验测得弥散系数D =0 .0 0 2 4 2m2 /d。COD在包气带中的迁移转化过程是弥散、吸附、降解等多种作用共同作用的结果。
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| 关 键 词： | 有机污染物 包气带 迁移转化 |
| 修稿时间： | 2003年3月19日 |
Study on the migration and transformation of organic pollutants in vadose zone |
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| Gao Taizhong Huang Qunxian Liu Ye Cai Hesheng.Study on the migration and transformation of organic pollutants in vadose zone[J].Techniques and Equipment for Environmental Pollution Control,2004,5(2):42-45. |
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| Authors: | Gao Taizhong Huang Qunxian Liu Ye Cai Hesheng |
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| Institution: | Gao Taizhong+1 Huang Qunxian+1 Liu Ye+2 Cai Hesheng+3 |
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| Abstract: | Wastewater with a certain concentration of organic pollutants was collected. Static adsorption, static biodegradation and dynamic soil column experiments were conducted in laboratory. We researched migration and transformation of COD in vadose zone, and put forward a mathematical model of the process. The results show that adsorption of organism in vadose zone is linear, which is represented by Henry's Law s = K dc + s o, adsorption coefficient K d = 0.0693; biodegradation diagram accord basically with first_order kinetics equation c = c 0e -k 1t , biodegradation coefficient k 1 = 0.0499 d -1 ; dispersion coefficient D = 0.00242 m 2/d in experiments. The migration and transformation of organic pollutants in vadose zone jointly result from many factors such as dispersion, adsorption and biodegradation etc. |
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| Keywords: | organic pollutants vadose zone migration and transformation |
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