在泰国曼谷的移动所废水中进行试点规模的回收
Thanakrit Neamhom1,2, Pakasinee Yakam3, Chalermkiet Bathbumrung3
1Department of Environmental Health Sciences, Faculty of Public Health, Mahidol University, Rajvithi Road, Bangkok, 10400, Thailand. Nt.thanakrit@gmail.com.
Scientific reports
|January 28, 2025
概括
这项研究证明了使用斯特鲁维特酸盐形成反应器从移动所废水中有效地回收. 最佳条件产生了高回收和生物可用性,显示了大规模化肥生产的潜力.
科学领域:
- 环境工程 环境工程
- 环境化学环境化学
- 农业科学 农业科学
背景情况:
- 移动所的废水含有高度的 (P),这给环境带来了挑战.
- 是农业的关键营养素,但其从废物流中回收的效率往往低.
- 斯特鲁维特-酸盐沉为回收和化肥生产提供了一个潜在的方法.
研究的目的:
- 为了提高一个斯特鲁维特酸盐形成反应堆的容量,从移动所废水生产肥.
- 为了最大限度地回收,优化降水条件 (Mg:P比,pH).
- 评估农业土壤中的颗粒化过程和回收的生物可用性.
主要方法:
- 进行了批量实验,从废水中沉石酸.
- 操作变量,包括 (Mg): (P) 摩尔比和pH,系统地变化.
- 评估了使用砂糖加工废物作为填充剂的颗粒化和随后在不同类型的土壤中出.
主要成果:
- 回收率从1.9%到65.2%不等,在高pH值时回收率达到峰值.
- 在Mg:P比为1.25和pH值为9的情况下,可以获得最佳的回收.
- 能量分散式X射线光谱学 (EDS) 证实是沉中占主导元素的 (13.1%).
- 在90天后,在沙土泥土中观察到高泄漏效率 (97.7%).
结论:
- 斯特鲁维特酸盐形成反应器是一种可行的技术,可以从废水中大量回收.
- 优化的化学沉和颗粒化提高了的回收和生物可用性.
- 这些发现支持大规模实施这种技术用于回收和肥料生产.
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