Developing, evaluating and modeling subpotable water reclamation and remediation

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，以满足需求并保持环境完整性。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维护等因素的影响对原水水质有重大影响。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来代替高成本的经处理的饮用水，用于新的经济增长活动和工业，同时减少市政基础设施的负荷。SK地表水提出了一些独特的设计和管理挑战，特别是因为营养负荷是以溶解形式。因此，许多现有的方法和模型，在水处理中去除营养物没有解决这个挑战。该项目将调查各种回收和处理雨水的选择，以便在需要大量优质次饮用水的情况下重新使用。研究将集中在SK工业的多孔介质副产品，用于去除引起富营养化的无机磷和氮。其他城市污染物的去除，如园林绿化农药，油脂和微生物将在子项目中进行调查，以评估整体系统设计的功效，局限性，过程和补救模型。机制模型将被开发，以阐明无机营养物质从再生水中去除的基本过程。模型开发和校准包括各种环境和水质条件以及污染物去除的拟议机制，包括吸附、吸收、整体运输、孔隙运输（孔隙和表面扩散）。这些机制和过程的实施和出版的模型和学术成果的性能监测进行了调查。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、过度分配或多个用户有争议，或以其他方式受到限制或损害的地方。

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.