Remediation of non-aqueous phase liquid wastes in groundwater systems containing trapped gas

清洁用水是国家的优先事项。 数百万加拿大人依赖清洁的地下水作为饮用水来源。 此外，由于工业化学品对土壤和地下水的污染，加拿大成千上万的废弃房产中有许多仍然未被使用。 通常，最难清理的地点是那些被化学品污染的地点，如石油燃料、溶剂、干洗液和煤焦油，这些化学品已知对人类健康构成重大风险。 由于地下环境的复杂性以及污染物的物理和化学特性，清理这些场地是一项挑战。 因此，修复一个站点可能要花费数百万美元。 详细了解污染物如何从源头进入周围的地下水，对于设计成功的、具有成本效益的解决方案至关重要。

Clean water is a national priority. Millions of Canadians depend on clean groundwater as a source of drinking water. In addition, many of the tens of thousands of abandoned properties in Canada remain unused due to the contamination of soil and groundwater by industrial chemicals. Often, the most difficult sites to clean-up are those contaminated by chemicals such as petroleum fuels, solvents, dry cleaning fluids, and coal tar, which are known to present a significant risk to human health. Cleaning up these sites is a challenge due to the complexity of the subsurface, and the physical and chemical behaviour of contaminants. As a result, millions of dollars can be spent to remediate a single site. A detailed understanding of how contaminants move from their source into the surrounding groundwater is critical to engineering successful, cost-effective solutions.