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Waste Load Allocation in Rivers by Means of the Game Theory Case Study: Dez river

Nematian, Maryam | 2017

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 49683 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Abrishamchi, Ahmad; Arhami, Mohammad
  7. Abstract:
  8. Nowadays, by development of technology and population, rivers have been faced environmental issues. In one hand, due to the several factors that can affect rivers pollution, it is not easy to propose a comprehensive solution for the above mentioned issues, while, on the other hand, it is necessary to address and resolve some of these issues as soon as possible. Considering rives as a system, there are lots of economic, political and quite a few other factors which try to change the condition to their own interest. In order to find a solution that satisfies all the effective parameters up to a certain limit, a mathematical tool, called the Game theory method, is utilized. In this research, we try to simulate the river qualitatively using Streeter and Phelps equations by separating the river into different segments considering abrupt changes in one of the major impacting factors such as wastewater discharge. Using governing equations, amount of dissolved oxygen (DO) and Biochemical Oxygen Demand (BOD) can be calculated. Later, using Multi Objective Particle Swarm Optimization (MOPSO) algorithm, a collection of point with least possible expenses and standard deviation will be found out as possible scenarios. Then, using the non-associative game theory and Graph Model for Conflict Resolution (GMCR), the most probable scenario will be selected. In this procedure, two players are present, i.e. Wastewater discharger and Environmental agency. In addition, the presence of third-party was also studied. Synthesizing all the above, we predict the change in the future of the conflict which results in less pollution and higher eco-system prosperity. Finally, a case study of Dez river, Iran was presented which show the applicability of this approach
  9. Keywords:
  10. Conflict Resolution ; Game Theory ; Multiobjective Optimization ; Dez Basin ; Water Pollution ; Waste Load Allocation

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