WORKSHOP ON LEACHING TEST USE IN DECISION MAKING AT THE INTERNATIONAL LANDFILL SYMPOSIUM

摘要

When considering long-term impacts from either landfilling or beneficial use, the major concern will be on heavy metals and persistent organic contaminants. For an MSW landfill, the gas emissions are a relatively short term issue, whereas leaching of inorganic and persistent organic contaminants from MSW will continue for a long time and hence potentially poses significant long-term risk. Recent regulatory developments focus on release from construction products, which more and more are produced with alternative materials used as coarse and fine aggregates, fillers, etc. In many cases such alternative materials were formerly waste materials. Therefore alternative materials are judged for their hazardous nature in the EU (Hazardous Waste Directive) and by options to classify waste as non-critical by End-of-Waste criteria. Products produced with alternative materials need to be considered based on their environmental performance, as well as their technical performance.