Can water treatment residual be useful? A preliminary investigation in the Canadian Prairies

水处理残渣有用吗？

• 批准号: 580698-2022
• 负责人: Xue, JinkaiJ
• 金额: $ 2万
• 依托单位: University of Regina
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 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=752767
• 关键词: water; treatment; residual; useful; preliminary

Drinking water treatment is essential to the protection of public health in the modern society. Coagulation is the most widely used water treatment process in the world for particulate and colloidal matter removal from water, which results in large quantities of water treatment residual (WTR) production. As alum (hydrated aluminum sulfate salt) is the most commonly used coagulant, aluminum-based sludge is the most common WTR. Traditionally landfilling and agricultural application are the two common strategies of aluminum-based sludge management. The former is costly and the second may have difficulty in finding willingness among agricultural producers due to the concern of deteriorating soil health. The partner of this project pays over $1 million annually to landfill its aluminum-based sludge, which is a heavy financial burden. In light of the main elements, e.g., Al, Si, and Ca, in aluminum-based sludge, aluminum-based sludge may be made into value-added products such as adsorbent, bricks, ceramsite, and concrete. We will work with the partner to explore the possibility of transforming a costly to manage waste into marketable products. The main goal of this project is to preliminarily explore the possibility of developing value-added products using wastewater stream (aluminum-based sludge) generated at the industrial partner's facility. Specific objectives are: 1) Conduct systematic literature research on valorization of aluminum-based sludge; 2) Characterize the aluminum-based sludge generated at the plant in different seasons; and 3) Explore directly reusing aluminum-based sludge for emerging pollutant removal from water matrices. The project will not only help the partner to further enhance its environmental stewardship but also reduce operational costs or even open up new profit opportunities. Such an endeavor also has implications to the sustainable development of the region and Canada.

饮用水治疗对于保护现代社会的公共卫生至关重要。凝血是世界上最广泛使用的水处理过程，从水中清除了胶体物质，这导致大量水处理残留（WTR）产生。由于铝（水合硫酸盐盐）是最常用的凝血剂，因此铝的污泥是最常见的WTR。传统上，垃圾填埋和农业应用是基于铝制的污泥管理的两种常见策略。前者是昂贵的，第二个可能很难在农业生产者中寻找意愿，因为担心土壤健康状况不佳。该项目的合作伙伴每年支付超过100万美元的费用，以垃圾填埋场基于铝的污泥，这是一个沉重的财务负担。鉴于主要元素，例如Al，Si和Ca，在基于铝的污泥中，可以将基于铝的污泥制成增值产品，例如吸附剂，砖块，陶瓷石和混凝土。我们将与合作伙伴合作，探索将废物管理成本昂贵的可能性。该项目的主要目标是初步探索使用工业合作伙伴工厂生成的废水流（基于铝制的污泥）开发增值产品的可能性。具体目标是：1）对基于铝的污泥的价值进行系统文献研究； 2）表征不同季节在植物中产生的基于铝的污泥； 3）探索直接重用基于铝的污泥，以从水基质中清除新兴的污染物。该项目不仅将帮助合作伙伴进一步增强其环境管理，还可以降低运营成本，甚至开放新的利润机会。这样的努力也对该地区和加拿大的可持续发展产生了影响。