关键词: 区域危险废物管理, 选址&mdash, 路径问题, 多目标优化, 增广&epsilon, -约束算法, 路径模型

Abstract: To strategically configure the system facilities and determine the transportation plan of hazardous wastes and waste residuals among these facilities in a planning horizon,while satisfied all corresponding operational and capacity constraints,referred to the path-based model of network flow problem and introduced the link risk tolerance capacity,a path-based large-scale bi-objective mixed integer linear programming model was formulated which took minimum total cost and total risk in the transportation and location decisions as the objectives.By utilizing the advantages of proposed model,an augmented ε-constraint approach was customized to obtain the approximate non-dominated frontier.Computational tests on a large-scale realistic example showed that the proposed path-based formulation could output the same number of non-dominated solutions within much shorter computation times compared with the existed link-based formulation.Meanwhile,the developed augmented ε-constraint approach was obviously better than the existed weighted-sum approach in terms of the solution quality.

Key words: regional hazardous waste management, location-routing problem, multi-objective optimization, augmented ε-constraint approach, path-based formulation