Characterization of Tire-Derived Aggregate for Septic Field Applications

废旧汽车轮胎的最终处理仍然是世界各地的一个重大挑战。平均而言， 马尼托巴省每年生产约140万条轮胎，由两家回收公司回收 包括OTR回收公司。尽管回收轮胎制成的各种产品，20%的旧轮胎不能 由于它们可以使用的应用有限，因此可以回收利用。因此，OTR回收公司正在积极 寻找新的应用。一种潜在的应用是用作化粪池的骨料。但 目前，还没有关于轮胎衍生骨料（TDA）作为骨料性能的研究报告 在低温条件下的化粪池中，如马尼托巴和加拿大其他地区。的 马尼托巴的监管机构对在环境中使用轮胎可能产生的不利影响（如果有的话）表示担忧。 淋洗场系统两个主要问题是：1）TDA可能会浸出污染物， 地下水质量，和2）TDA是否可以执行以及一个传统的沥滤场系统。的 因此，我的目标是通过与马尼托巴大学的袁博士合作来解决这些问题， 进行实验室规模的实验，以回答浸出问题，并采取实地规模的研究， 评估TDA作为加拿大寒冷环境中天然骨料的替代品。 本研究的主要目的是表征和量化的渗滤液成分在水生 预期在化粪池现场应用期间会遇到的环境。 这项研究将提供初步的有价值的资料，适用于TDA作为替代岩石 在加拿大的一个沥滤场聚集。这些信息对于环境监管机构来说至关重要， 做个决定这对正在为TDA寻找新市场的轮胎回收商也很重要。此外 就经济效益而言，TDA对环境有双重好处，因为它消除了挖掘岩石的需要， 对被认为是废物的有益再利用。

Ultimate disposal of used vehicle tires continues to be a major challenge around the world. On average, Manitoba produces about 1.4 million tires per year, which are being recycled by two recycling companies including OTR Recycling Corp. Despite the various products made from recycled tire, 20% of used tires cannot be recycled due to the limited applications which they can be used. Therefore, OTR Recycling Corp. is actively looking for new applications. One potential application is use as aggregate for septic fields. However, at present time, there are no reported studies available on tire derived aggregate (TDA) performance as aggregate in septic fields in the areas with low temperature conditions such as Manitoba and other parts of Canada. The regulatory agency of Manitoba has concerns about the possible adverse effects, if any, from using tires in the leaching field systems. The two primary concerns are: 1) TDA might leach contaminant which can affect groundwater quality, and 2) whether TDA can perform as well as a conventional leaching field system. The goal is, therefore, to address those concerns by collaborating with Dr. Yuan at the University of Manitoba to conduct lab scale experiments to answer leaching questions and follow up this up with a field-scale study to evaluate TDA as a replacement for natural aggregate in the cold Canadian environment. The primary goal of this research is to characterize and quantify the leachate composition in aquatic environments that are expected to be encountered during septic field application. This study will provide primary valuable information on the suitability of TDA to act as a substitute for rock aggregate in a leach field in Canada. This information is essential for the environmental regulatory body to make a decision. It is also important for the tire recyclers who are seeking a new market for TDA. In addition to the economic benefit, TDA benefits the environment twofold by eliminating the need to excavate rock and the beneficial reuse of what was considered a waste.