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

营养盐通过点源和非点源进入湖泊，最终沉淀在底部沉积物中，在沉积物中积累并最终释放回上覆水体。沉积物磷释放是世界上许多浅水湖泊富营养化的主要原因之一。本研究检测了从Caron湖（一个富营养化湖泊）采集的沉积物样品，以了解使用再悬浮技术结合过滤从沉积物中去除磷的可能性。Caron湖沉积物中磷的平均浓度在908 ~ 1310 mg/kg P之间。根据沉积物中磷的化学形态，在酸性和碱性条件下都可以观察到沉积物中磷的释放，从而对湖泊水质产生显著影响。建议开发一种采用Texel土工织物技术的过滤技术，用于去除有机物、藻类和营养物。该试验将在实验室进行，包括一个用于悬浮沉积物的水箱、管道和通风装置、一个用于去除悬浮物的泵和一个用于从悬浮物中去除水的过滤装置。实验室试验将于早春开始，使用2017年采集的各种含磷沉积物样本。非织造土工布（Texel）将被用作过滤来自沉积物再悬浮的悬浮物质的过滤材料。各种孔径土工织物将进行评估，以确定最佳的去除营养基再悬浮沉积物。随着冰的融化，将从卡隆湖获得新鲜的表面沉积物样品。过滤测试将确定从沉积物中去除有机物、SS和营养物。过滤模块的开发将显着扩大土工织物的适用性，用于沉积物处理，以减少由于高营养水平而导致的水华的发生。将对各种土工织物进行评价。通过减少营养物来保护和改善水质，将改善水的美观和社区的健康，并允许水用于娱乐目的，并确保保护财产价值。

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.