History, Processing, and Usage of Recycled Glycol for Aircraft Deicing and Anti-Icing

摘要

Numerous advancements in aircraft deicing/anti-icing fluids, applicationmethodologies, training and deicing/anti-icing equipment have emerged in recent years; however, the undesirable effects of deicing fluid runoff on the environment remain a challenge. Although most proper disposal operations include precise metering on the resultant deicing operation runoff into sewer systems in amounts deemed not ecologically detrimental, this practice is not considered a suitable solution by all. Costs associated with glycol runoff may provide additional incentive for recycling. Capturing spent glycols for recycling into aircraft usable, certified deicing/anti-icing products or marketable glycols for nonaviation use is anticipated to ease the stress of local environs and water treatment plants. Practices and procedures addressing the recycling and reuse of these glycols are the underlying focus of this investigation. The primary objective of this study was to globally investigate and document spent glycol recycling methods and practices, including Asian, former Soviet bloc countries, and other areas of the world not within the purview of current SAE/ISO fluid standards.