The limitation of landfill area, huge quantity of waste generation, and the potential savings in total cost have called for the regionalism in solid waste management, and also systematic approaches that were used beneficially for the design of large system and in the informed decision making processes. The solution procedure of this one of urgent public sector problems is the optimal distribution of urban service facilities by the compromise of trade-offs between economies of scale and total transportion cost.
The solid waste management system in the capital area was studied using the WRAP (Waste Resource Allocation Program) that can solve the fixed charge problem using the algorithm of mixed integer programming to determine the optimal location and size of the process facilities.
The optimal system designs for the solid waste management in the capital area were performed and compared for the following possible scenarios:
1. using the existing road.
2. transportation by newly constructed road, rail road, or canal.