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温度和盐度对粘土层在固体废物填埋场的透性和液压导电性演变的影响

Zhongle Cheng¹, Fugang Wang¹, Guohua Yang¹

¹Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130012, China; Jilin Provincial Key Laboratory of Water Resources and Water Environment, Jilin University, China.

Waste management (New York, N.Y.)

|November 2, 2025

概括

垃圾填埋场的热量和分解的盐度会影响粘土层的透性. 这项研究表明,20°C和10g/L盐度是关键值,影响温度和盐度如何共同影响粘土.

科学领域:

地质技术工程地质技术工程
环境工程环境工程
材料科学材料科学材料科学

背景情况:

压缩粘土层 (CCL) 和地球合成粘土层 (GCL) 对于垃圾填埋场液防透至关重要.
垃圾填埋场的生物化学降解产生热量和盐度,改变了粘土的透性.
缺乏对土透性的温度和盐度联合影响的系统分析.

研究的目的:

实验性地研究温度和盐度对粘土透性的联合影响.
量化分析影响表面透性的机制.
为了确定温度和盐度影响的关键值.

主要方法:

在不同温度 (530°C) 和盐度 (020 g/L) 下对粘土的透性进行实验性调查.
取决于温度的液体粘度和盐度诱导的土壤特性变化的定量分析.
应用液压导电性模型来阐明控制机制.

主要成果:

温度显著影响透性,特别是在20~30°C之间,盐度增加会减少这种效应.
表面的透性和液压导电性随着盐度的增加而下降,不同盐度范围 (0-5,5-10,10-20 g/L) 的明显变化.
温度和盐度协同影响结合的水含量,影响明显的透性,20°C和10g/L的盐度被确定为关键值.

结论:

盐度诱导的土壤特性变化和温度驱动的流体特性变化是控制粘土层液压导电性的关键机制.
了解这些结合作用对于设计长期耐用的垃圾填埋场防污染粘土屏障至关重要.
确定的值为优化垃圾填埋的性能和寿命提供了关键数据.

关键词:

粘土土壤是一种粘土土壤.微观结构的微观结构透性透性的物理性质是一种物质性质.盐分盐分盐分盐分盐分温度温度是指温度.

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