钼尾矿典型元素特性与基于TRRP模型的路基利用环境影响评估

王硕; 赵虎; 田祎; 叶旌; 胡华龙

doi:10.13205/j.hjgc.202510015

钼尾矿典型元素特性与基于TRRP模型的路基利用环境影响评估

doi: 10.13205/j.hjgc.202510015

1. 生态环境部固体废物与化学品管理与技术中心, 北京 100029

基金项目:

国家重点研发计划（2023YFC3904405，2024YFC3907905）；生态环境部固体废物与危险废物环境管理项目（2110304）

详细信息

作者简介:
王硕（1989—），男，工程师，主要研究方向为重金属及固体废物污染防治研究。wangshuo@meescc.cn

通讯作者:
叶旌（1978—），女，博士，正高级工程师，主要研究方向为重金属及固体废物污染防治研究。yejing@meescc.cn

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出版历程
- 收稿日期: 2024-08-29
- 录用日期: 2024-10-15
- 修回日期: 2024-09-30
- 网络出版日期: 2025-12-03
- 刊出日期: 2025-10-01

Characteristics of typical elements and environmental impact assessment for road subgrade utilization of molybdenum tailings based on TRRP model

1. Solid Waste and Chemicals Management Center, Ministry of Environmental Protection, Beijing 100029, China

摘要

摘要: 针对钼尾矿及其制备的路基材料，开展典型元素含量分布及浸出特征研究，并应用TRRP模型评估钼尾矿路基利用中污染物对地下水的潜在环境风险。结果表明：钼尾矿及制备的路基材料中Cd、Hg、As、Pb、Cr、Cu、Ni、Zn、Mn、Mo、F的浓度均未超过GB 36600—2018《土壤环境质量建设用地土壤污染风险管控标准（试行）》第一类用地筛选值，部分元素Cd、Pb、Zn、Cu、Mo超出了全国土壤背景值。钼尾矿中Mo中性条件浸出浓度超出 GB/T 14848—2017《地下水质量标准》中Ⅲ类限值，Cd、Pb、Zn、Mo浸出浓度超出 GB/T 14848—2017中Ⅲ类限值，酸性条件下典型元素的释放水平较中性条件有所提升。路基材料中典型元素Cd、Pb、Mn、Mo浸出有效浓度超出GB/T 14848—2017中Ⅲ类限值。基于TRRP-T2模型的地下水风险评估，典型重金属元素浓度均未超过GB/T 14848—2017中Ⅲ类限值，表明钼尾矿用于路基材料对地下水环境的风险隐患可控。
- 钼尾矿 /
- 路基材料 /
- 重金属 /
- 浸出浓度 /
- 地下水 /
- 环境影响
Abstract: Based on an implementation case of a molybdenum mine tailings roadbed utilization project in Inner Mongolia， this study investigated the distribution and leaching characteristics of typical elements in molybdenum tailings and the subgrade materials derived from them. Additionally， the TRRP model was employed to evaluate the potential environmental risks to groundwater during the utilization of molybdenum tailings as subgrade materials. Results indicated that the concentrations of Cd， Hg， As， Pb， Cr， Cu， Ni， Zn， Mn， Mo， and F in both molybdenum tailings and derived subgrade materials did not exceed the screening values for the first type of land use specified in GB 36600—2018. However， elements such as Cd， Pb， Zn， Cu， and Mo surpassed the national soil background values， with the concentration of Mo exceeding its background value by nearly 112 times. Under neutral conditions， the leaching concentration of Mo exceeded the Class III limit set by GB/T 14848—2017. Moreover， under acidic conditions， the leaching concentrations of Cd， Pb， Zn， and Mo also exceeded this limit. Notably， the highest leaching rate observed was 15.91% for Cd， and the release levels of typical elements were higher under acidic conditions compared to neutral conditions. In subgrade materials， the effective leaching concentrations of Cd， Pb， Mn， and Mo exceeded the Class III limit setby GB/T 14848—2017， and the leaching rate of Cd， Zn， and Mo exceeded by 20%. Nevertheless， based on the groundwater risk assessment using the TRRP-T2 model， the concentrations of typical heavy metal elements remained within the Class Ⅲ limits setby GB/T 14848—2017， indicating that the environmental risks posed by the use of molybdenum tailings for subgrade materials were manageable. The research results can provide theoretical support and data reference for the environmental risk assessment of the resource utilization scenarios of large industrial solid wastes， such as metal tailings in roadbed utilization.
- molybdenum tailings /
- subgrade material /
- heavy metal /
- leaching concentration /
- ground water /
- environmental impact

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