制造波浪:如何用光片颗粒清洁地表水
Lukas M Trebuch1, Jolieke Timmer1, Jan van de Graaf2
1Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10, 6708 PB, Wageningen, The Netherlands.
Water research
|June 14, 2024
概括
光颗粒有效地从污染的地表水中去除和,即使在低度. 这种创新的微生物聚合物技术为改善水质和保护生态系统提供了一个有希望的解决方案.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 水处理工程水处理工程
背景情况:
- 全球地表水面临严重的生态和化学退化,需要有效的污染控制战略.
- 光颗粒,藻类和细菌的微生物聚合物,显示出减少通风和二氧化碳捕获的废水处理的前景.
- 之前的研究集中在高强度废水上,表面水处理的潜力未被探索.
研究的目的:
- 评估光粒在从污染的表面水中去除营养素方面的有效性.
- 为了评估光颗粒在低营养度和短的液压保留时间下的性能.
- 为了研究表面水处理过程中光颗粒的形态变化.
主要方法:
- 摄影颗粒用于处理含有低营养水平 (3.2 mg/L N,0.12 mg/L P) 和1.5小时的液压保留时间的污染表面水.
- 在没有pH控制的情况下使用了测序批量操作来监测营养物质的去除.
- 在表面水处理条件下分析了光粒体形态.
主要成果:
- 光颗粒实现了显著的去除 (<0.6 mg/L,~80%) 和去除 (<0.01 mg/L,90-95%).
- 摄像颗粒通过开发类似手指的形态来适应地表水的条件,增加表面积.
- 尽管发生了形态变化,但光颗粒仍然保持了出色的沉性能.
结论:
- 光颗粒是有效的从污染的表面水中去除营养,即使在低度和短的液压保留时间.
- 光颗粒形态的适应性提高了它们适用于各种水处理应用的适应性.
- 光颗粒技术为地表水整治提供了一种可行和可持续的方法.
相关概念视频
Coagulation
280
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
280
Colloidal precipitates
560
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
560
Bioremediation
18.2K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.2K


