表面地下水相互作用对城市道内处理系统中营养动态的影响
Fabio C Silveira1, Thomas A Cochrane2, Ricardo Bello-Mendoza2
1Department of Civil and Natural Resources Engineering, University of Canterbury, Private Bag 4800, 8140, Christchurch, New Zealand. fabio.silveira@canterbury.ac.nz.
Environmental monitoring and assessment
|December 11, 2024
概括
地下水的透显著影响了道内水处理,增加了溶解的活性和氨,同时降低了酸盐. 低液压导电性沉积物加剧了这些营养变化.
科学领域:
- 环境科学 环境科学
- 水质管理水质管理
- 地质化学 地质化学
背景情况:
- 道内水处理系统利用低温区过程去除营养物质.
- 表面水和地下水相互作用对这些处理系统的影响仍然不清楚.
研究的目的:
- 评估不同的地下水条件和床沉积物的液压导电性如何影响和在道内处理系统中的动态.
主要方法:
- 为了模拟通道内条件,进行了流水实验.
- 在不同的地下水 (中性,排水,漏) 和沉积物液压导电性 (低和高) 场景下监测了地表水质.
主要成果:
- 地下水透增加了11-65%的溶解反应 (DRP) 和10-51%的氨 (NH4-N),同时降低了11%的酸盐 (NO3-N).
- 与高液压导电性沉积物 (DRP +11%,NH4-N +10%) 相比,低液压导电性沉积物放大了营养增加 (DRP +65%,NH4-N +51%).
- 上升的地下水流将DRP和NH4-N输入地表水中;NH4-N的增加是氨化造成的,NO3-N的减少是脱和稀释造成的.
结论:
- 地下水和地表水的相互作用极大地影响了道内处理系统中的营养循环.
- 沉积物的液压导电性是影响营养动力学的关键因素.
- 这些发现可以为设计和监测有效的道内处理系统提供信息,以在互动的地下水和地表水环境中进行监测.
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