磷矿固废污染物释放与扩散研究现状及展望

陈霞; 周显; 邓闪闪; 彭子凌; 范泽宇; 高卓凡; 鲁麒

doi:10.11988/ckyyb.20231092

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长江科学院院报 ›› 2025, Vol. 42 ›› Issue (1) : 64-73. DOI: 10.11988/ckyyb.20231092

水土保持与生态修复

磷矿固废污染物释放与扩散研究现状及展望

陈霞 ¹^,² ,
周显 ¹^,² ,
邓闪闪 ¹^,² ,
彭子凌 ² ,
范泽宇 ² ,
高卓凡 ² ,
鲁麒 ²

作者信息 +

State-of-Art and Prospect of Researches on Release and Diffusion of Phosphate Solid Wastes

CHEN Xia ¹^,² ,
ZHOU Xian ¹^,² ,
DENG Shan-shan ¹^,² ,
PENG Zi-ling ² ,
FAN Ze-yu ² ,
GAO Zhuo-fan ² ,
LU Qi ²

Author information +

文章历史 +

摘要

磷矿固废堆场的渗滤液是污染物释放的主要来源,结合我国存量与增量磷矿固废堆存现状及环境影响特点,从磷矿固废渗滤液组成、扩散与迁移等方面,阐述了我国磷矿固废的污染物释放与扩散研究现状。磷矿固废渗滤液污染物含量高、磷石膏pH值较低、荷载高等因素可能导致防渗材料的渗透系数增加,应履行更加严格的污染物浸出试验和防渗层设置要求。现阶段有关磷矿固体废弃物渗滤液和扩散的研究与堆场所处真实环境条件存在差异,后续研究应结合磷矿固废堆场真实环境及渗滤液特点,建议综合考虑堆场自身及环境温度、降雨入渗及上部盖重产生的有效应力等的影响,结合热-湿-力(THM)淋滤试验装置开展多场耦合条件下磷矿固废渗滤液污染物的释放与扩散机理研究,为磷矿固废堆场渗滤液的预防与控制奠定理论基础。

Abstract

The diffusion of leachates from phosphate solid wastes is a major source of contaminants. Based on the existing and increment of phosphate solid waste in China as well as its environmental impacts, this study reviews the current status of researches on phosphate solid waste accumulation in China focusing on the composition, diffusion, and migration of leachates from phosphate solid wastes. More stringent requirements for leaching experiments and the design of impermeable barriers are essential as the permeability coefficient of impermeable materials may increase due to high pollutant concentration in leachate, low pH value of phosphogypsum, and large overburden pressure. Current researches on leachate release and diffusion often fail to replicate actual landfill conditions. Future studies should integrate field-specific parameters such as ambient temperature, rainfall infiltration, and effective stress from overburden weight. Thermal-humid-mechanical (THM) leaching test apparatus is also recommended for multifield coupling investigation. This approach will provide a more comprehensive theoretical understanding of leachate prevention and control in phosphate waste landfills.

导出引用

陈霞, 周显, 邓闪闪, 等. 磷矿固废污染物释放与扩散研究现状及展望[J]. 长江科学院院报. 2025, 42(1): 64-73 https://doi.org/10.11988/ckyyb.20231092

CHEN Xia, ZHOU Xian, DENG Shan-shan, et al. State-of-Art and Prospect of Researches on Release and Diffusion of Phosphate Solid Wastes[J]. Journal of Changjiang River Scientific Research Institute. 2025, 42(1): 64-73 https://doi.org/10.11988/ckyyb.20231092

中图分类号： X751 (矿业工程)

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