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Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm

Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm

Published on: December 9, 2012

A compatibility-based procedure designed to generate potential sanitation system alternatives.

Max Maurer¹, Ahmed Bufardi, Elizabeth Tilley

¹Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600 Dübendorf, Switzerland. max.maurer@eawag.ch

Journal of Environmental Management

|April 10, 2012

Summary

This study introduces a new method for generating viable sanitation system alternatives using multi-criteria decision analysis (MCDA). It filters out inoperable options early, ensuring a manageable set for final selection.

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Area of Science:

Environmental Engineering
Decision Science

Background:

Multi-criteria decision analysis (MCDA) research often overlooks alternative generation, focusing instead on selection.
Existing MCDA methods assume a pre-defined set of alternatives, potentially limiting optimal solutions.

Purpose of the Study:

To address the under-researched problem of generating potential alternatives in sanitation systems planning.
To develop a systematic procedure for identifying technically feasible sanitation system alternatives.

Main Methods:

A compatibility assessment procedure was developed for defining and evaluating sanitation system alternatives.
A compatibility matrix was introduced to identify incompatibilities between sub-process options (user interface, storage, conveyance, treatment, reuse/disposal).
Potential alternatives are defined by the absence of pairwise incompatibilities within their sub-process options.

Main Results:

The compatibility assessment effectively filters out inoperable sanitation system configurations.
This method ensures that generated alternatives are technically feasible before further evaluation.
The procedure results in a manageable set of alternatives for subsequent decision-making.

Conclusions:

The proposed compatibility assessment is a crucial first step in the sanitation system planning process.
This approach enhances the efficiency and effectiveness of MCDA by focusing on a refined set of alternatives.
It contributes to better decision-making in sanitation systems by ensuring a foundation of technically sound options.