Developing, evaluating and modeling subpotable water reclamation and remediation

次饮用水回收和修复的开发、评估和建模

• 批准号: 288137-2009
• 负责人: McMartin, Dena
• 金额: $ 1.38万
• 依托单位: University of Regina
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=525695
• 关键词: Developing; evaluating; modeling; subpotable; water

Fast-paced economic and industrial growth in Saskatchewan translate into significantly higher water quality and quantity assessments and treatment to meet demand and maintain environmental integrity. The impacts of climate change, oilfield and mining activities, non-point inputs from agricultural nutrients and chemicals, and winter highway maintenance have significant effects on raw water quality. Since the majority of potable water is not consumed as drinking water there is potential to reclaim stormwater in place of high-cost, treated potable water for new economic growth activities and industries while reducing load on municipal infrastructure. SK surface water presents several unique design and management challenges, particularly since nutrient loading is in the dissolved form. Thus, many existing methods and models for nutrient removal in water treatment do not address this challenge. This project will investigate a variety of options for reclaiming and treating stormwater for reuse in circumstances where large volumes of good quality, subpotable water are required. Research will focus on porous media byproducts from SK industries for removal of eutrophication-causing inorganic phosphorous and nitrogen. The removal of other urban contaminants, such as landscaping pesticides, oils and grease, and microorganisms will be investigated in sub-projects to evaluate overall system design efficacy, limitations, processes, and models for remediation. Mechanistic models will be developed to elucidate fundamental processes by which inorganic nutrients are removed from reclaimed water. Model development and calibration include a variety of environmental and water quality conditions and proposed mechanisms of contaminant removal, including adsorption, absorption, bulk transport, pore transport (both pore and surface diffusion). These mechanisms and processes are investigated for implementation and publication of models and scholarly results of performance monitoring. The potential reclamation and reuse models can be applied where water supplies are sparse, drought-susceptible, over-allocated or disputed for multiple users, or otherwise restricted or compromised.

萨斯喀彻温省快速的经济和工业增长转化为更高的水质和水量评估和处理，以满足需求和保持环境完整性。气候变化、油田和采矿活动、农业养分和化学品的非点源输入以及冬季公路养护对原水质量有重大影响。由于大多数饮用水不是作为饮用水消费的，因此有可能回收雨水，以取代高成本的经过处理的饮用水，用于新的经济增长活动和行业，同时减轻市政基础设施的负荷。SK地表水面临着几个独特的设计和管理挑战，特别是因为营养物质负载是以溶解的形式存在的。因此，许多现有的水处理中去除营养物质的方法和模型都没有解决这一挑战。这个项目将研究各种回收和处理雨水的方案，以便在需要大量优质可倒水的情况下重复使用。研究将集中在SK工业的多孔介质副产品上，以去除导致富营养化的无机磷和氮。其他城市污染物的去除，如园林绿化杀虫剂、油脂和微生物，将在子项目中进行调查，以评估总体系统设计的有效性、局限性、流程和补救模式。将开发机械模型来阐明从再生水中去除无机营养物质的基本过程。模型的开发和校准包括各种环境和水质条件以及拟议的污染物去除机制，包括吸附、吸收、整体迁移、孔隙迁移(包括孔隙和表面扩散)。对这些机制和过程进行了研究，以实施和发布绩效监测的模型和学术结果。潜在的回收和再利用模式可以应用于供水稀少、易受干旱影响、过度分配或对多个用户有争议、或以其他方式受到限制或受到损害的地方。