Geotextile filtration to improve surface water quality

富营养化已被确定为对加拿大地表水质量特别是湖泊水质的主要风险之一。当湖泊富营养化时，生物多样性减少，浑浊度和有机质增加，缺氧条件发展。藻华的增加带来了不良的审美、味道和气味问题，对游泳者和宠物有害，并由于潜在的毒素产生而导致健康危害增加。这项研究的目的是评估非织造土工布在减少营养物质和悬浮固体以改善湖泊水质方面的有效性，特别是对于使用地表水作为饮用水和娱乐目的的小型社区。该项目将是最近使用非织造土工布作为过滤介质进行的现场实验的延续。这些湖泊位于魁北克省蒙特利尔北部的圣安妮-德-拉克市。在去除营养物和固体方面，这些都显示出改善地表水质量的潜力。因此，下一步建议在湖泊中进行中试，在现实条件下考察影响磷和其他组分去除效率的因素，为未来的规模推广和实施做好准备。该项目是与土工布制造商（Titan Environmental Containment）和当地社区合作进行的，将为恢复富营养化湖泊提供一种无需添加化学物质的潜在解决方案。

Eutrophication has been identified as one of the leading risks to surface water quality especially lake water quality in Canada. When lakes become eutrophic, there is a decrease in biodiversity, increase in turbidity and organic matter and the development of anoxic conditions. The increase in algal blooms provides poor aesthetics, taste and odor problems, is a hazard to bathers and pets and leads to increased health hazards due to potential toxin production. The objective of the study is to evaluate the effectiveness of non-woven geotextiles in reducing the nutrients and suspended solids to improve lake water quality, particularly for small communities that use surface water for drinking water and recreational purposes. This project will be a continuation of a recent on-site experiments conducted by using nonwoven geotextiles as filter media. The lakes are located in the Sainte-Anne-des-Lacs municipality, north of Montreal, Quebec. These have shown potential for improvement of surface water quality in terms of nutrients and solids removal. Therefore, the next step proposed is to test the filter in the lake in pilot tests to examine the factors affecting the phosphorus and other component removal efficiency under realistic conditions for future scale-up and implementation. This project is in collaboration with a geotextile manufacturer (Titan Environmental Containment) and the local community and will lead to a potential solution without chemical addition for the restoration of eutrophic lakes.