带有紧的二次生命模块的重力驱动膜过,每天进行反冲:对于集中设施而言,这是传统超过的替代方案
Deborah Stoffel1, Nicolas Derlon1, Jacqueline Traber1
1Eawag, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, Dübendorf 8600, Switzerland.
Water research X
|May 30, 2023
概括
引力驱动膜 (GDM) 过为饮用水生产提供了弹性,低能耗的替代方案. 使用二次生命模块和每日反洗使GDM过具有成本效益,并且可以适应环境变化.
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
- 膜科学 膜科学 膜科学
背景情况:
- 饮用水的传统超过 (UF) 面临着能源和化学依赖的挑战,特别是在资源稀缺期间.
- 引力驱动膜 (GDM) 过是一种战略性的替代方案,因为其能耗较低,膜寿命更长.
- 大规模实施需要紧,经济高效的膜模块,具有高生物聚合物去除能力.
研究的目的:
- 为了评估紧的稳定流量,内外空洞的纤维膜与频繁的重力驱动的反冲.
- 评估使用二次使用UF模块用于GDM过的经济可行性.
- 为了确定生物聚合物去除是否通过频繁的反冲洗和二次生命模块来维持.
- 在不同的条件下,将GDM过场景的经济可行性与传统的UF进行比较.
主要方法:
- 使用新型和二次使用的紧膜模块对稳定流量和生物聚合物去除的实验性评估.
- 实施频繁的重力驱动反冲,以保持模块性能.
- 经济分析比较GDM过 (新/第二生命模块) 与传统的UF,考虑到能源价格和模块寿命.
主要成果:
- 稳定的流量约为10L/m2/h被维持了142天的新和第二生命模块.
- 每天重力驱动的反冲足以弥补紧模块的流量下降,而不会影响生物聚合物去除.
- 与传统的UF相比,Second-life模块显著降低了GDM过膜投资成本.
- 尽管能源价格波动,GDM过成本保持稳定,与传统的UF不同.
结论:
- 用频繁的重力驱动反冲和二次生命模块进行GDM过是一种可行且具有成本效益的方法,用于集中式饮用水设施.
- 这种方法增强了对环境和社会约束的弹性和适应能力.
- 由于能源价格的波动,GDM过的经济可行性进一步得到改善,使其与传统的UF越来越有竞争力.
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