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Updated: Jun 21, 2025

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在批量和流体化反应堆中通过斯特鲁维特结晶回收:微塑料和溶解有机物质的作用

Junna Yan¹, Mengyu Ma¹, Feihu Li²

¹Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, 219 Ningliu Road, Nanjing 210044, China.

Journal of hazardous materials

|July 7, 2024

概括

微塑料 (MPs) 加快了斯特鲁维特结晶以恢复营养,而酸 (HA) 阻碍了这一过程. 了解这些污染物相互作用是优化肥料生产和水质的关键.

科学领域:

环境工程环境工程
材料科学材料科学材料科学
水处理处理水的方法

背景情况:

斯特鲁维特结晶是一种从废水中恢复营养的关键技术.
新出现的污染物,如微塑料 (MP) 和酸 (HA),在废水中越来越普遍.
这些污染物可以显著影响斯特鲁维特回收的效率和产品质量.

研究的目的:

研究MPs和HA对 struvite结晶过程的影响.
分析这些污染物对 struvite 核,生长和沉物组成的影响.
为了比较MPs和HA在批量和流化床反应堆中的行为.

主要方法:

使用合成和真实废水进行批量和流化床反应堆实验.
在特定度下控制添加MPs (聚乙烯二甲) 和HA.
使用X射线衍射和瑞特维尔德提炼分析沉物相组合.
晶体形态和核化行为的表征.

主要成果:

国会议员显著加快了 struvite 的核和生长速度,作为核种子.
HA阻碍了 struvite 的形成,相反促进了新贝里特的降水.
存在30mg/L的MPs导致沉物中 struvite 纯度超过80%.
由于MP和HA,观察到沉物相组成的显著变化.

结论:

通过作为核化场所,MPs可以提高斯特鲁维特结晶效率和产品纯度.
HA通过抑制其形成和促进替代矿物沉,对 struvite 恢复产生负面影响.
优化营养回收需要全面了解新出现的污染物与斯特鲁维特结晶的相互作用.

关键词:

结晶化结晶化结晶化运动学运动学的回收使用方法斯特鲁维特 (Struvite) 是一种石头.水的净化水的净化方法

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相关概念视频

The Phosphorus Cycle

The Phosphorus Cycle

Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.