Abstract
Abstract. The problem of Urban Municipal solid waste disposal is a challenging task faced by civic bodies and planning authorities in almost all the cities of rapidly developing countries like India. A similar situation is being faced by Dehradun, the capital, and the fastest growing city of Uttarakhand, India. In the current study, an attempt has been made to find out the suitable sites for waste disposal in the area around Dehradun city using Geospatial Multi-criteria Decision Analysis (MCDA) techniques from remote sensing data. Two different decision rules of MCDA are used, namely, Analytical Hierarchical Process based Weighted Linear Combination (AHP – WLC) and Technique for Order Preference by Similarity to the Ideal Solution (TOPSIS). WLC has been used previously for similar studies for its ease and simplicity to apply in raster format but TOPSIS has an advantage over WLC, it orders a set of alternatives on the basis of their separation from the ideal point. It defines the best alternative as the one that is simultaneously closest to the ideal alternative and farthest from the negative ideal point. Raster-based suitability analysis has been done and the results obtained by the two methods are compared. Identical results with minor differences identifying best suitable sites outside the eastern boundary of the city where the existing dumping site is located are obtained. Also, new potential sites are identified in the western part of the city which faces the problem of waste disposal more acutely because of expansion of the city in that direction.
Highlights
India is one of the fastest growing economies in the world (World Bank Group, 2017)
The present study has been done on the Dehradun city area, to find out suitable areas for locating new sites for disposal of solid waste making use of geospatial techniques and multicriteria decision analysis (MCDA)
In this study two different decision rules of MCDA, i.e. Weighted Overlay and TOPSIS were applied to find out the suitable sites for solid waste disposal in Dehradun and area surrounding it
Summary
India is one of the fastest growing economies in the world (World Bank Group, 2017). As the country is advancing in all areas of development and especially infrastructure, health, education, etc. the cities are expanding and growing at exponential rates as more and more people are becoming educated and moving towards service sector. The quantification of various variables which influence the site selection for solid waste dumping is done using Analytical Hierarchical Process (AHP) presented by Saaty (1980) It helps in measuring intangibles in relative term. It compares the criteria pairwise and calculates the weights or the relative importance of each criterion (Saaty, 1977) These weights derived have been further used and combined in a GIS environment using two different algorithms, namely, Weighted Overlay Method or Weighted Linear Combination (WLC) method and by Technique for Order Preference by Similarity to the Ideal Solution (TOPSIS) and suitable sites for Solid Waste Disposal have been found out in and around Dehradun city area. The present study’s goal is to find and compare suitable sites for Solid waste dumping in the area surrounding Dehradun using Remote Sensing and GIS technology combined with MCDA algorithms WLC and TOPSIS as a continuation of the aforementioned study
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
