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在风力干扰下,在浅湖的沉积物中同步控制和的释放,这些沉积物是由改性地和Ca/Al基污泥组合的改性地和Ca/Al基污泥组合

Qiu-Gang Wang¹, Bing-Xu Guo¹, Jun-Yu Ai¹

¹College of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi, Xinjiang, 832000, PR China; Key Laboratory of Cold and Arid Regions Eco-Hydraulic Engineering of Xinjiang Production & Construction Corps, Shihezi, Xinjiang, 832000, PR China.

Environmental research

|November 25, 2024

概括

修改后的污泥和热带石有效地控制了湖泊沉积物中释放的和,减少了化. 这种方法提高了水质,并有助于在风力干扰下回收污泥.

科学领域:

环境科学环境科学
水的化学水的化学
微生物学微生物学

背景情况:

浅层湖泊中的缩因沉积物释放的内源性污染物而加剧.
风的干扰会增加沉积物中 (N) 和 (P) 的释放,从而加剧过度缩.
需要有效的整治策略来控制N和P的释放,特别是在动态条件下,如风力干扰.

研究的目的:

通过使用改性Ca/Al基污泥 (MS) 和改性岩 (MZ) 来研究从浅湖沉积物中释放N和P的同步控制的效率和机制.
评估MS和MZ (MSZG) 在风力干扰下抑制N和P释放的联合作用.
评估MS和MZ对沉积物微生物群落的影响及其在污染物转化中的作用.

主要方法:

通过高温化对Ca/Al基污泥 (MS) 进行修改,并通过NaCl浸对修改过的焦化物 (MZ) 进行修改,以提高吸附能力.
化实验 (90天) 评估MS和MZ的表现,单独和组合 (MSZG),控制N和P释放.
在覆盖水和沉积物中的污染物度 (TN,NH4+-N,TP,PO43--P) 的分析,以及微生物社区转移的特征.

主要成果:

修改后的MS和MZ分别表现出PO43--P (42.01毫克g-1) 和NH4+-N (20.28毫克g-1) 的高吸附能力.
增加MS和MZ改变了微生物群落,增加了有益细菌 (Thauera,Nitrospira) 和减少其他细菌,促进了微生物N和P转化.
综合MSZG处理显著减少了TN,NH4+-N,TP和PO43--P在覆盖水中的72.13%,88.92%,69.28%和81.26%,分别达到III类地表水标准.
风力干扰通过增加修复剂的接触深度来提高MS和MZ的有效性.

结论:

修改的Ca/Al基污泥和修改的地岩 (MSZG) 的联合应用是一种高度有效的策略,用于同步抑制从浅湖沉积物中释放的和.
物理拦截,物理化学吸附和生物转换的协同效应有助于在风力干扰下修复化的浅湖.
这项研究提供了一种可持续的方法来管理内源污染,改善水质和回收污水污泥.

关键词:

基于Ca/Al的污泥内源性污染物释放的污染物修改过的热石沉积物再悬浮的方法浅浅的湖泊浅浅的湖泊

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