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Watershed Planning within a Quantitative Scenario Analysis Framework
12:44

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Published on: July 24, 2016

Watershed-based point sources permitting strategy and dynamic permit-trading analysis.

Shu-Kuang Ning1, Ni-Bin Chang

  • 1Department of Civil and Environmental Engineering, National University of Kaohsiung, Kaohsiung 811, Taiwan, ROC.

Journal of Environmental Management
|August 26, 2006
PubMed
Summary

Dynamic permit trading in total maximum daily load (TMDL) programs can achieve environmental goals cost-effectively. This study presents a framework for setting seasonal trading ratios and prices to optimize water quality management.

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Area of Science:

  • Environmental science
  • Water resource management
  • Environmental economics

Background:

  • Permit trading within Total Maximum Daily Load (TMDL) programs offers a cost-effective alternative to command-and-control for environmental benefit.
  • Effective trading requires dynamic adjustment of transaction prices and ratios based on seasonal river assimilative capacity.

Purpose of the Study:

  • To develop an integrated simulation and optimization approach for generating spatially and temporally varied permit trading ratios.
  • To evaluate seasonal transaction prices within a basin-wide permit trading structure for water pollution management.

Main Methods:

  • Integrated QUAL2E simulation model with an optimal waste load allocation (WLA) scheme.
  • Analysis of multi-temporal, spatially varied trading ratios for point sources.
  • Development of a dynamic permit-trading framework for biochemical oxygen demand (BOD) and ammonia-nitrogen (NH3-N).

Main Results:

  • Generated spatially varied trading ratios and evaluated seasonal transaction prices.
  • Proposed dynamic waste load reduction targets and a permit-trading framework across sub-watersheds.
  • Demonstrated the complexity of varying environmental resource values over space and time.

Conclusions:

  • The study provides a robust framework for dynamic permit trading applicable to Total Maximum Daily Load programs.
  • Findings support cost-effective, technology-oriented, and risk-informed water quality management strategies.
  • The developed transferable dynamic-discharge permit (TDDP) framework has global applicability.