Development of geotextiles for the restoration of Texel Technical Materials Inc.

营养物质通过点进入湖泊，非点源最终在底部沉积物中沉淀，在那里积累，最终释放回上覆水中。底泥磷释放是世界上许多浅水湖泊富营养化的主要原因之一。本研究对从富营养化湖泊卡隆湖采集的沉积物样本进行研究，以了解再悬浮技术与过滤相结合对沉积物中磷的潜在去除作用。Caron湖沉积物中P的平均浓度在908~1310 mg/kg P之间，这取决于沉积物中P的化学形态，在酸性和碱性条件下都观察到沉积物P的显著释放，因此可能对湖泊水质产生重大影响。建议开发一种与土工织物技术相结合的过滤技术，用于去除有机物、藻类和营养物质。该系统将在实验室中完成，包括一个水池、用于悬浮沉积物的管道和曝气、用于去除悬浮物质的泵和用于从悬浮物中去除水的过滤设备。实验室的试验将在初春开始，使用2017年采集的各种含磷沉积物样本。非织造布土工织物(TEXEL)将用作泥沙再悬浮悬浮物的过滤材料。将对不同孔径的土工布进行评估，以确定去除营养基再悬浮沉积物的最佳方案。随着冰层融化，将从Lac Caron获得新的地表沉积物样本。过滤测试将确定从沉积物中去除有机物、SS和营养物质。过滤模块的开发将大大扩大土工织物在泥沙处理中的适用性，以减少因营养水平高而导致的水华发生。将对各种土工织物进行评估。通过减少营养物质来保护和改善水质，将改善水的美学、社区的健康，并允许将水用于娱乐目的，并将确保财产价值的保护。

Nutrients enter into lakes through point and non-point sources are finally settled in bottom sediments wherethey accumulate and eventually release back into the overlaying water. Sediment phosphorus release is one ofthe main reasons for eutrophication in many shallow lakes around the world. This present study examinessediment samples collected from Lake Caron, a eutrophic lake to understand the potential removal ofphosphorus from the sediment using a resuspension technique coupled with filtration. The average Pconcentrations in the Lake Caron sediments ranged between 908 and1310 mg/kg P. Depending on the chemicalforms of P in the sediments, significant sediment P release was observed at both acidic and alkaline conditionsand thus could have a significant influence on lake water quality. It is proposed to develop a filtrationtechnology with geotextile technology with Texel for the removal of organic matter, algae and nutrients. Thesystem will done in the laboratory and will consist of a tank, tubing and aeration for suspension of sediments, apump for removal of the suspended material and a filtration apparatus for removal of the water from thesuspended matter. Trials in the laboratory will begin early spring using various samples of phosphoruscontaining sediments taken in 2017. Nonwoven geotextiles (Texel) will be used as the filter materials forsuspended matter from resuspension of sediments. Various pore size geotextiles will be evaluated to determinethe optimal for removal of nutrient based resuspended sediment. As the ice melts, fresh surface sedimentsamples will be obtained from Lac Caron. Filtration tests will determine removal of organic matter, SS,nutrients from the sediments. Development of the filtration module will significantly expand the applicabilityof the geotextiles for sediment treatment to reduce occurrence of blooms due to high nutrient levels. Variousgeotextiles will be evaluated. The protection and improvement of the water quality by nutrient reduction willimprove the aesthetics of the water, health of the community and allow the water to be used for recreationalpurposes and will ensure the protection of the property values.