Nicol Scott, Thompson Shirley
Natural Resources Institute, University of Manitoba, Winnipeg, Manitoba, Canada.
Waste Manag Res. 2007 Jun;25(3):227-33. doi: 10.1177/0734242X07079152.
Today, over-consumption, pollution and resource depletion threaten sustainability. Waste management policies frequently fail to reduce consumption, prevent pollution, conserve resources and foster sustainable products. However, waste policies are changing to focus on lifecycle impacts of products from the cradle to the grave by extending the responsibilities of stakeholders to post-consumer management. Product stewardship and extended producer responsibility are two policies in use, with radically different results when compared for one consumer product, refrigerators. North America has enacted product stewardship policies that fail to require producers to take physical or financial responsibility for recycling or for environmentally sound disposal, so that releases of ozone depleting substances routinely occur, which contribute to the expanding the ozone hole. Conversely, Europe's Waste Electrical and Electronic Equipment (WEEE) Directive requires extended producer responsibility, whereby producers collect and manage their own post-consumer waste products. WEEE has resulted in high recycling rates of greater than 85%, reduced emissions of ozone-depleting substances and other toxins, greener production methods, such as replacing greenhouse gas refrigerants with environmentally friendly hydrocarbons and more reuse of refrigerators in the EU in comparison with North America.
如今,过度消费、污染和资源枯竭正威胁着可持续发展。废物管理政策常常无法减少消费、防止污染、节约资源以及推广可持续产品。然而,废物政策正在发生变化,通过将利益相关者的责任扩展至消费后管理,来关注产品从摇篮到坟墓的生命周期影响。产品监管和生产者延伸责任是目前正在实施的两项政策,以一种消费产品——冰箱为例进行比较时,会产生截然不同的结果。北美已经制定了产品监管政策,但这些政策并未要求生产商对回收或环境友好型处置承担实际或经济责任,以至于消耗臭氧层物质的排放经常发生,这加剧了臭氧层空洞的扩大。相反,欧洲的《废弃电子电气设备指令》要求生产者延伸责任,据此生产商要收集和管理他们自己的消费后废弃产品。该指令已使欧盟的冰箱回收率超过85%,减少了消耗臭氧层物质和其他毒素的排放,带来了更环保的生产方式,比如用环境友好型碳氢化合物替代温室气体制冷剂,并且与北美相比,欧盟冰箱的再利用率更高。