Grid-based heuristic method for multifactor landfill siting

Hung Yueh Lin, Jehng Jung Kao*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

39 Scopus citations


Siting a landfill requires the processing of a large amount of spatial data. However, the manual processing of spatial data is tedious. A geographical information system (GIS), although capable of handling spatial data in siting analyses, generally lacks an optimization function. Optimization models are available for use with a GIS, but they usually have difficulties finding the optimal site from a large area within an acceptable computational time, and not easily directly available with a raster-based GIS. To overcome this difficulty, this study developed a two stage heuristic method. Multiple factors for landfill siting are considered and a weighted sum is computed for evaluating the suitability of a candidate site. The method first finds areas with significantly high potentialities and then applies a previously developed mixed-integer programming model to locate the optimal site within the potential areas, and can significantly reduce the computational time required for resolving a large siting problem. A case study was implemented to demonstrate the effectiveness of the proposed method, and a comparison with the previously developed model was provided and discussed.

Original languageEnglish
Pages (from-to)369-376
Number of pages8
JournalJournal of Computing in Civil Engineering
Issue number4
StatePublished - Oct 2005


  • Algorithms
  • Data processing
  • Geographic information systems
  • Landfills
  • Optimization
  • Site selection


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