Geotextile filtration to improve surface water quality

富营养化已被确定为加拿大地表水质量，特别是湖泊水质的主要风险之一。当湖泊变得富营养化时，生物多样性减少，浑浊度和有机质增加，并形成缺氧条件。藻类水华的增加带来了不良的美学、味道和气味问题，对游泳者和宠物构成了危害，并由于潜在的毒素产生而导致对健康的危害增加。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，特别是对于将地表水用作饮用水和娱乐目的的小型社区。该项目将是最近利用非织造土工布作为过滤介质进行的现场试验的延续。这些湖泊位于魁北克蒙特利尔以北的圣安妮-德斯-莱克斯市。这些都显示出在营养物质和固体去除方面改善地表水质量的潜力。因此，下一步建议对滤池进行中试试验，考察现实条件下影响滤池除磷等组分效率的因素，为以后的放大和实施做好准备。该项目与土工织物制造商(泰坦环境控制)和当地社区合作，将产生一种潜在的解决方案，无需添加化学物质即可恢复富营养化湖泊。

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.