Matériaux contaminés, développement d'un traitement sur site par des méthodes physico chimiques et réaction d'oxydo réduction

金属和有机有毒化合物对土壤的污染在发达国家和加拿大广泛传播。在接下来的几十年里，仅在加拿大治疗或妥善管理这些网站就意味着全球超过200亿美元的成本。这种类型的污染恶化了各种生态系统和人类的健康。在北极，这些污染场地的管理是复杂、困难和不发达的。Metox技术具有优势，因为它可以一步处理污染，而不是使用多个连续步骤。这个项目的主要目标是在第一部分处理两种不同情况下的北极土壤，因为取暖油在建筑物下面或周围。在建筑物下，土壤将通过在钻井竖井中注入氧化剂进行原位氧化处理。对于建筑物周围的土壤，将在现场挖掘并在反应器中进行处理，以便处理后再利用。该项目的另一个主题是采用该技术来处理来自拆迁建筑垃圾回收的小于1厘米的颗粒。这将避免对这部分垃圾进行有问题的填埋，并减少与之相关的环境负担。更具体地说，该项目有四项主要活动。1)采用氧化技术就地处理采暖油污土(建筑物下)；2)就地开挖处理采暖油污土，并对现场土壤进行再利用。3)对建筑或拆除过程中产生的细小垃圾进行处理，以避免垃圾填埋，并有利于产生的硫酸钙的价态。4)对建筑和拆卸废物回收产生的细颗粒物进行试点处理。该项目应允许开发有助于改善环境和减少管理这些土壤或废物的成本的技术。一名博士生和其他研究人员将参与这个项目。将发表国际研究论文。

The contamination of soils by metals and organic toxic compounds is widely spread in developed countries and Canada. In the next few decades, it represent globally a cost of over 20 billions $ to treat or properly manage those sites in Canada only. This type of pollution deteriorates the health of the various ecosystems and of human beings. In the Arctic, the management of those contaminated sites is complex, difficult and underdeveloped. The technology Metox is advantageous because it can treat the contamination in one step instead of using multiple sequential steps. The main objective of this project is in a first part to treat soil of the Arctic for two different situations as heating oil is under or around the buildings. Under the building the soil will be treated with an in-situ oxidation process through the injection of oxidant in drilled shaft. For the soil around the building the soil will be excavated and treated in a reactor on site in order to be reused after treatment. Another theme of this project is to adapt the technology to treat the particle of a size less than around 1 cm which comes from the recycling of the demolition construction waste. This will avoid the problematic landfilling of this fraction and reduce the environmental burden associated to it. More specifically the project has four main activities. 1) In-situ treatment of soil contaminated by heating oil (under the building) with an oxidation technology, 2) Excavation and treatment on site of soil contaminated by heating oil and reuse of the soil on the site. 3) Treatment of the fine fraction of the waste generated during construction or demolition in order to avoid the landfilling and to favor the valorization of the calcium sulfate generated. 4) Trials at pilot scale for the treatment of the fine particles generated in the recycling of waste from construction and demolition. This project should permit the development of technologies which will help to improve the environment and diminish the cost to manage those soils or wastes. A doctorate student and other researchers will be involved in this project. International research papers will be published.