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Risk-based decision-making framework for the selection of sediment dredging option
Norpadzlihatun Manap1, Nikolaos Voulvoulis2
1Faculty of Technology Management and Business Universiti Tun Hussein Onn Malaysia 86400 Parit Raja, Batu Pahat Johor, Malaysia; Centre for Environmental Policy, Imperial College London, United Kingdom.
The Science of the Total Environment
|August 11, 2014
Summary
This study introduces a staged framework for selecting sediment dredging options. It integrates ecological risk assessment and multi-criteria decision analysis for efficient, cost-effective, and holistic sediment management.
Area of Science:
- Environmental Science
- Risk Management
- Decision Science
Background:
- Sediment dredging requires careful selection of options.
- Existing methods may lack holistic integration of various factors.
- Effective decision-making frameworks are crucial for sediment management.
Purpose of the Study:
- To develop a risk-based, staged decision-making framework for selecting sediment dredging options.
- To integrate Ecological Risk Assessment (ERA) and Multi-Criteria Decision Analysis (MCDA) for enhanced sediment management.
- To provide a holistic and cost-effective approach for the dredging industry.
Main Methods:
- Utilized historical dredging monitoring and contamination data for Ecological Risk Assessment.
- Applied Multi-Criteria Decision Analysis (MCDA) to prioritize dredging areas based on environmental, socio-economic, and managerial criteria.
- Integrated MCDA results with ERA to characterize contamination and identify optimal dredging strategies.
Main Results:
- A novel, staged framework combining ERA and MCDA was developed.
- The framework allows for prioritization of dredging areas based on multiple criteria.
- The approach facilitates the selection of the best sediment dredging option considering economic, environmental, and technical aspects.
Conclusions:
- The developed framework offers a comprehensive and efficient approach to sediment dredging option selection.
- This integrated methodology benefits the dredging and sediment management industries by optimizing decision-making.
- The risk-based, staged framework enhances cost-effectiveness, time efficiency, and simplicity in sediment management.
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