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封闭模式对氧化从沉积物中释放的控制的影响

Fujun Sun¹, Yanhui Zhan¹, Jianwei Lin²

¹College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China.

Environmental science and pollution research international

|June 6, 2023

概括

氧化 (LH) 封闭有效地控制了从沉积物中释放的. 多种LH应用对在悬浮颗粒物沉积的淡水体中长期控制有希望.

科学领域:

环境科学环境科学
水质管理水质管理
沉积物修复沉积物修复

背景情况:

沉积物内部的负荷是对缩的主要担忧.
使用氧化 (LH) 的现场活性封闭是一种控制释放的有希望的方法.
了解限制模式对LH有效性的影响至关重要.

研究的目的:

研究封闭模式对氧化控制沉积物中释放的能力的影响.
为了比较单次高剂量与多次小剂量LH上限的疗效.
在没有悬浮颗粒物 (SPM) 沉积和SPM沉积条件下评估LH上限.

主要方法:

在现场使用氧化 (LH) 的活跃封闭实验.
监测从沉积物迁移到覆盖的水 (OW).
在沉积物中分析分数,包括不稳定的 (UPDGT) 和移动 (PMobile).

主要成果:

在无氧期间,LH限制有效地抑制了内源在OW中的释放,特别是通过无活化UPDGT和PMobile.
在没有SPM沉积的情况下,多次LH剂量显示早期疗效降低,但长期稳定性增加.
在SPM沉积下,多次LH剂量最初效果较差,但在长期控制释放方面更有效.

结论:

多重氧化 (LH) 限制是控制淡水系统内部负荷的可行长期策略.
液上限减轻了释放的风险,特别是在频繁沉积悬浮颗粒物的环境中.
沉积物中特定分量的非活性化是LH限制成功的关键机制.

关键词:

封装模式封装模式兰氧化兰氧化多重封闭多重封闭一次性的上限限制.是一种的物质.沉积物的沉积物

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