Approaches to estimate future quantities of Waste Electrical and Electronic Equipment (WEEE)

Quantification of future Waste Electrical and Electronic Equipment (WEEE) is fundamental to planning adequate and efficient treatment. Concerning this special type of waste, prognosis is done mostly by 'Input-Output Models'. This means future waste quantities are estimated subsequent modelling the stage of production, purchase or usage. A different approach is demonstrated by example of the state of Baden-Wurttemberg. Taking into consideration a number of influencing factors, such as collection schemes or fees, prospective estimates of WEEE from private households can be made. Advantages and disadvantages of different approaches are discussed in terms of flexibility, available data, and objectives.