无机改性膨润土防渗层性能研究

无机改性膨润土防渗层性能研究

王铁军^1，2，赵勇胜¹，屈智慧¹，周睿¹，刘莹莹¹，吴倩芳¹，吕聪¹，侯戈¹

1.吉林大学环境与资源学院，长春 130026;2.国家城市供水水质监测网长春监测站，长春 130022

收稿日期:2007-12-04 修回日期:1900-01-01 出版日期:2008-05-26 发布日期:2008-05-26
通讯作者: 王铁军

Study on Performance of Inorganic Modified Bentonite as Impermeable Layer

WANG Tie-jun^1,2, ZHAO Yong-sheng¹, QU Zhi-hui¹, ZHOU Rui¹,LIU Ying-ying¹, WU Qian-fang¹, LV Cong¹, HOU Ge¹

1.College of Environment and Resources，Jilin University，Changchun 130026，China;2.Changchun Monitoring Station, State City Water Supply Quality Monitoring Network，Changchun 130022，China

Received:2007-12-04 Revised:1900-01-01 Online:2008-05-26 Published:2008-05-26
Contact: WANG Tie-jun

摘要/Abstract

摘要： 通过实验室实验确定2 mol/L氯化镁、0.5 mol/L硫酸和450℃高温为天然钠基膨润土盐改性、酸改性和高温改性的最佳条件。采用上述3种无机改性方式填装防渗层，就其对垃圾渗滤液中主要污染物去除的有效性和控制垃圾渗滤液渗透的可行性进行研究。实验结果显示：3种无机改性膨润土的吸附能力和容量有所提高；渗透系数可达到1×10^-7 cm/s以下，可以作为“反应型”防渗层材料；在相同渗透量下，高温改性膨润土对垃圾渗滤液中主要污染物的去除效果最好，其次是酸改性膨润土，盐改性膨润土最差。

关键词: 无机改性, 膨润土, 氯化镁, 硫酸, 焙烧

Abstract: According to the laboratory experiments, 2 mol/L magnesium chloride, 0.5 mol/L sulfuric acid and 450℃ roasting were determined as the optimum conditions for the natural Na-bentonite by salt modification, acidification and roasting. The availability and feasibility of the 3 inorganic modified-layers to main contaminants removal in the leachate and leachate leaking control were investigated. The experimental results indicated that the adsorptive capacities and the capacities of the 3 inorganic modified bentonites were enhanced; the permeability of the layers was less than 1×10^-7 cm/s, therefore the layers could be used as the “reactive layer”. In the same leaked amount sample, the best removal efficiency of the main pollutants was the roasted bentonite, and next was the acidified bentonite, and the salty modified bentonite was the lowest one.

Key words: inorganic modified, bentonite, magnesium chloride, sulfuric, roasting

中图分类号:

X701.1

王铁军，赵勇胜，屈智慧，周睿，刘莹莹，吴倩芳，吕聪，侯戈. 无机改性膨润土防渗层性能研究[J]. J4, 2008, 38(3): 463-0467.

WANG Tie-jun, ZHAO Yong-sheng, QU Zhi-hui, ZHOU Rui,LIU Ying-ying, WU Qian-fang, LV Cong, HOU Ge. Study on Performance of Inorganic Modified Bentonite as Impermeable Layer[J]. J4, 2008, 38(3): 463-0467.

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