闭坑矿井水影响下喀斯特河流污染特征演化及水质评价
Spatial-Temporal Evolutionof Karst River Pollution Characteristics and Water Quality Evaluation Under the Influence of Closed Pit Mine Water
路豪 1刘埔 2王靖怡 1陈维孝 3罗颖 1邹山山1
作者信息
- 1. 贵州大学 资源与环境工程学院,贵州 贵阳 550000
- 2. 贵州大学 资源与环境工程学院,贵州 贵阳 550000;贵州大学 喀斯特地质资源与环境教育部重点实验室,贵州 贵阳 550000
- 3. 贵州大学 喀斯特地质资源与环境教育部重点实验室,贵州 贵阳 550000
- 折叠
摘要
闭坑矿井水汇入河流会对河流的水生态环境产生较为严重的影响.以贵阳市受闭坑矿井水污染的喀斯特地貌河流为研究对象,分析河流的污染特征并评价其水质.结果表明:闭坑矿井水汇入喀斯特地貌地表河流后,水体SO42-、Fe等酸性闭坑矿井水特征污染物含量升高;研究区河流除了受闭坑矿井水污染外,还有其他污染水体汇入,主要为当地居民生活污水、农业灌溉排水.研究区水质指数(WQI)、重金属污染指数(HPI)、重金属污染评价指数整体变化趋势相同;河流源头处水质级别为优,闭坑矿井水汇入后,水质变为差、较差,经地表水、地下水汇入补给以及河流自净,水质级别变为好.
Abstract
The mine water flowing into the river will have a serious impact on the hydrological and ecological environment of the river.The study focused on karst geomorphic rivers polluted by closed pit mine water in Guiyang City and analyzed the pollution characteristics of rivers and evaluated their water quality.The outcomes show that the content of SO42-,Fe and other characteristic ions of closed pit mine water in the water body increases after the closed pit mine water flowing into the surface rivers of karst landscape.In addition to closed pit mine water,there are other sources of pollution in the study area,mainly local residents'domestic sewage or agricultural irrigation drainage.The calcula-tion results of Water Quality Index(WQI),Heavy Metal Pollution Index(HPI)and Heavy Metal Pollution Evaluation Index(HEI)show that the overall trend of all three is the same;the water quality grade at the river source is excellent,and the water quality becomes poor and worse after the recharge of the closed pit mine water,via surface water,after recharge from surface water,groundwater and self-purification of the river,the water quality grade becomes good.
关键词
闭坑矿井水/水质评价/多元统计分析/喀斯特河流Key words
closed pit mine water/water quality evaluation/multivariate statistical analysis/karst river引用本文复制引用
基金项目
国家自然科学基金(42107080)
贵州省科技支撑计划(QKHZC[2020]4Y005)
北京市青年自然科学基金(3234060)
贵州大学人才引进项目(GDEJHZ[2018]32)
出版年
2024
国家科技期刊平台
NSTL
万方数据