Evaluation for solid wastes disposal site using geographic information system in Phu Wiang district cluster Khon Kaen province

Abstract

This study aimed at an evaluation of the potential area for disposal site in Phu Wiang District Cluster in Khon Kaen province by using Geographic Information System (GIS) computer program. Initially, the potential area of disposal sites were mapped based on the criteria for selecting landfill, incineration and composting site designated by Pollution Control Department (PCD) and the additional guideline for selecting the potential area for hazardous waste disposal site designated by PCD. By using the growth rate of 5%, number of population forcasted for the year 20th would be 1,536,650 persons. With the solid waste generation rate of 1 kg/capita/day, the amount of solid waste generation for the year 20th would be 7,500 tons. In according with the ratio component of solid waste types as 53.28%, 30.38% and 16.34% for incineration, composting and landfill, the area of land requirement for each type are 0.51, 0.086 and 0.579 square kilometers respectively. Total area required for disposal of solid wastes is 1.18 square kilometers. By GIS approach, there are 14 potential disposal sites disposal site. Under the consideration of location and distance to the communities by field survey, 4 sites were screened to be the appropriate potential sites. After using the weight rating technique, the most appropriate potential area for disposal site is site number 14, which is in the area of Ban Khok Muang, Chum Phae District. It could be concluded that GIS is the meaningful tool to facilitate the disposal siting. Significantly, groundwater level and soil properties are ones of the major criteria for selecting site for disposal.