人工地下水井充电期间的水地化学变化
Ningfei Li1, Hang Lyu2, Guigui Xu3
1Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, China; College of Construction Engineering, Jilin University, Changchun 130021, China; Institute of Water Resources and Environment, Jilin University, Changchun 130021, China.
The Science of the total environment
|July 26, 2023
概括
人工地下水补充通过水地化学反应影响水质. 控制充电水质量,特别是溶解氧和有机物质,是保护充电后地下水的关键.
科学领域:
- 环境科学 环境科学
- 水文地质学 水文地质学
- 水资源管理 水资源管理
背景情况:
- 人工地下水补充对于水资源管理至关重要.
- 了解充电期间的水地化学变化对于地下水质量至关重要.
- 有限的研究全面评估环境,化学,有机物和微生物的影响.
研究的目的:
- 通过井道对人工地下水充电过程中的水地化学演变进行调查.
- 分析充电水和水岩相互作用对地下水质量的影响.
- 确定地下水质量变化中的关键反应和有机物质作用.
主要方法:
- 在雄安新区进行人工地下水充电实验.
- 监测地下水位,水质指标,溶解有机物 (DOM) 和微生物群落.
- 分析了水地化学反应,包括矿物质溶解-沉和氧化还原过程.
主要成果:
- 地下水位出现了快速上升,波动,并在充电水注入后随后上升.
- 水质,DOM和微生物群落因混合和水岩相互作用而发生变化.
- 连续反应包括有氧呼吸,化,脱化和Mn/Fe矿物氧化还原过程.
- 类似蛋白质的DOM推动了有氧呼吸和脱;类似的DOM增强了Mn/Fe的减少.
结论:
- 充电水质量在人工充电后显著影响地下水质量.
- 在充电水中控制溶解氧和DOM可以减轻负面影响.
- 这些发现对预测地下水质量演变和确保人工充电期间安全具有重要意义.
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