Model Keputusan pada Perencanaan Penanganan Limbah Berbahaya

Abstract

Hazardous waste treatment consist of collecting, transporting, treatment, dan disposal. There are some objectives in determining solutions of the hazardous waste treatment problems, for the corporations, the best solution is the one with mini- mum cost, while for the goverment is the one with minimum risk. The solution approaches incorporate with the hazardous waste consist of two main steps, that are determining the facilities location and their transportation routes. The models in some literatures generally did not describes real life problems, where only assumed a single hazardous waste, there are no consideration of recycling, residual waste, treatment, transportation and disposal cost of the residual waste. This study aims to develop a multiobjectives model in locating-routing problem of hazardous waste with some constraints, that are waste types and its residual waste, and also the ca- pacity of every facilities from treatment to its disposal. This study objectives are to minimize the total cost of hazardous waste treatment and also to minimize the transportation risks. Then the interactive algorithm is proposed by using the Ana- lytic Hierarchy Process (AHP) approach, in dealing with the goal priority aspects of the decision maker (DM). The application of the model in a case example shows a balance between cost and risk where costs will increase in order to reduce risk. Hence, the location of the processing, recycling and disposal centers changes as the weight factor changes.