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通过将浅层废水注入盐酸碳酸盐 Aquifer 中去除酸盐的效率

Kate Meyers¹, Megan Martin¹, Lee R Kump¹

¹Department of Geosciences, The Pennsylvania State University, University Park, Pennsylvania 16802, United States.

ACS ES&T water

|August 15, 2024

概括

佛罗里达群岛的废水注入是高效的,在几天内超过90%. 酸盐溶解和酸矿化有助于这一关键过程,以防止过度缩.

科学领域:

环境科学环境科学
水文地质学水文地质学
水质管理水质管理

背景情况:

由于含有酸盐,废水排放带来了化风险.
浅层注入盐水层在佛罗里达群岛是常见的.
在排放到地表水中之前,有效的酸盐去除是至关重要的.

研究的目的:

评估浅层地下注入井的酸盐去除效率.
研究盐酸石灰岩含水层中酸盐去除的机制.
评估废水注入后污染物的长期命运.

主要方法:

监测地下水和近海水中的营养和离子度.
从注射井追踪一个光染料羽毛.
分析溶解离子和酸盐去除之间的关系.

主要成果:

废水排放物由于密度的不同而形成了浅层的烟雾.
在近海水域检测到可溶性反应 (SRP) 和糖.
通过吸附和矿化实现了90%以上的SRP去除,在前10天~75%通过吸附和矿化.

结论:

浅地地下注入可以实现高酸盐去除效率.
石溶解后的酸矿化是一个关键的去除机制.
废水注入管理对于防止沿海缩至关重要.

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