Ordering Renewables: Groundwater, Recycling, and Desalination

James Roumasset and Christopher Wada

No 2011-10R, Working Papers from University of Hawaii Economic Research Organization, University of Hawaii at Manoa

Abstract: Optimal recycling of minerals can be thought of as an integral part of the theory of the mine. In this paper, we consider the role that wastewater recycling plays in the optimal extraction of groundwater, a renewable resource. We develop a two-sector dynamic optimization model to solve for the optimal trajectories of groundwater extraction and water recycling. For the case of spatially increasing recycling costs, recycled water serves as a supplemental resource in transition to the steady state. For constant unit recycling cost, recycled wastewater is eventually used as a sector-specific backstop for agricultural users, while desalination supplements household groundwater in the steady state. In both cases, recycling water increases welfare by shifting demand away from the aquifer, thus delaying implementation of costly desalination. The model provides guidance on when and how much to develop resource alternatives.

Keywords: Renewable resources; dynamic optimization; groundwater allocation; wastewater reuse; recycling; reclamation; water quality (search for similar items in EconPapers)
JEL-codes: C6 Q25 Q28 (search for similar items in EconPapers)
Pages: 28 pages
Date: 2011-05, Revised 2011-05
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Related works:
Working Paper: Ordering Renewables: Groundwater, Recycling, and Desalination (2011)
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