Methodology for computer-assisted optimization of waste flow

Abstract

The paper reports the development of a methodology based on computer simulations with the purpose to support decisions in designing the optimal architecture of different types of selective waste collection systems and recycling systems. The design of such systems is a complex task which involves both a very good knowledge of selective waste collection system equipment characteristics and of recycling processes, and the correct placing of the equipment along the flow so that to avoid underutilization of the structural elements and to avoid bottlenecks which generate low productivity or even blockages. The methodology is applied for three case studies in which different types of waste flow models are investigated: hybrid waste flows (windshields recycling), discrete waste flows (waste electric and electronic equipment collection) and continuous flows (industrial and automotive used oil collection and recycling). The architectures of these systems are optimized using the developed methodology in order to increase usage degree and productivity.