L2M NSERC - Gravity-driven water filtration system with long-term durability and multi-pollutant removal capacity

L2M NSERC - 重力驱动水过滤系统，具有长期耐用性和多污染物去除能力

• 批准号: 580650-2023
• 负责人: Huang, GordonG
• 金额: $ 1.46万
• 依托单位: University of Regina
• 依托单位国家: 加拿大
• 项目类别: Idea to Innovation
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=752750
• 关键词: L2M; NSERC; Gravity; driven; water

Water pollution is one of the main challenges that threaten human health and hinder economic growth. Poor water sanitation has strong links to elevated risk of gastrointestinal illnesses, skin cancers, and birth defects. These diseases kill over 3 million people every year, with over 40% of whom being children under 5 years old. Across Canada, the issue of drinking water safety is of special concern for remote and Indigenous communities. About 73% of water-supply systems for Indigenous communities are facing contamination risk. This is mainly due to the lack of access to centralized water treatment facilities for these disparate communities. To address this problem, we have been developing a gravity-driven water filtration system (GDWF), which holds great promise for achieving hybrid water disinfection and heavy-metal removal. GDWF integrates physical filtration and chemical adsorption within a general container setting, through the incorporation of a low-cost ceramic water filter (CWF) and packed nanocellulose beads (NB). Both CWF and NB can be made from locally available materials. Compared with commercial microfilters, the developed GDWF has the advantage of stable mechanical stability and long durability. It can be easily cleaned without the need of complicated processes for periodic replacement. It also relies on gravity for water to flow through the CWF/NB processes, such that no electricity is required. In terms of functionalities, GDWF can remove bacteria and heavy-metal ions simultaneously through a two-stage filtration and adsorption process. GDWF provides new insight into a cost-effective filtration/adsorption approach with regeneration ability, multi-pollutant removal capacity, and gravity-driven mechanism. These features make this product substantially suitable for low-income families as well as remote, rural and Indigenous communities where safe drinking water is inaccessible.

水污染是威胁人类健康并阻碍经济增长的主要挑战之一。不良的水卫生与胃肠道疾病，皮肤癌和先天缺陷的风险较高有很强的联系。这些疾病每年造成超过300万人丧生，其中超过40％是5岁以下的儿童。在整个加拿大，饮用水安全问题对于偏远和土著社区特别关注。土著社区的大约73％的水供应系统面临污染风险。这主要是由于这些不同社区无法获得集中式水处理设施。为了解决这个问题，我们一直在开发一个由重力驱动的水过滤系统（GDWF），该系统对实现杂种水消毒和重金属去除有着巨大的希望。 GDWF通过掺入低成本的陶瓷滤液过滤器（CWF）和包装的纳米纤维素珠（NB），整合了一般容器设置中的物理过滤和化学吸附。 CWF和NB均可用本地可用的材料制成。与商业微孔相比，开发的GDWF具有稳定的机械稳定性和持久性的优势。它可以轻松清洁，而无需进行复杂的过程即可进行周期性更换。它还依赖于水的重力流经CWF/NB过程，因此不需要电。在功能上，GDWF可以通过两阶段的过滤和吸附过程同时去除细菌和重金属离子。 GDWF提供了具有成本效益的过滤/吸附方法的新见解，并具有再生能力，多污染物去除能力和重力驱动的机制。这些功能使该产品基本上适合低收入家庭以及安全饮用水无法获得的偏远，农村和土著社区。