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| The Development of a Renewable-Energy-Driven Reverse Osmosis System for Water Desalination and Aquaculture Production |
| Clark C K Liu |
| Department of Civil and Environmental Engineering, and Water Resources Research Center, University of Hawaii at Manoa, HI 96822, USA |
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摘要 Water and energy are closely linked natural resources - the transportation, treatment, and distribution of water depends on low-cost energy; while power generation requires large volumes of water. Seawater desalination is a mature technology for increasing freshwater supply, but it is essentially a trade of energy for freshwater and is not a viable solution for regions where both water and energy are in short supply. This paper discusses the development and application of a renewable-energy-driven reverse osmosis (RO) system for water desalination and the treatment and reuse of aquaculture wastewater. The system consists of (1) a wind-driven pumping subsystem, (2) a pressure-driven RO membrane desalination subsystem, and (3) a solar-driven feedback control module. The results of the pilot experiments indicated that the system, operated under wind speeds of 3 m s-1 or higher, can be used for brackish water desalination by reducing the salinity of feedwater with total dissolved solids (TDS) of over 3 000 mg L-1 to product water or permeate with a TDS of 200 mg L-1 or less. Results of the pilot experiments also indicated that the system can remove up to 97% of the nitrogenous wastes from the fish pond effluent and can recover and reuse up to 56% of the freshwater supply for fish pond operation.
Abstract Water and energy are closely linked natural resources - the transportation, treatment, and distribution of water depends on low-cost energy; while power generation requires large volumes of water. Seawater desalination is a mature technology for increasing freshwater supply, but it is essentially a trade of energy for freshwater and is not a viable solution for regions where both water and energy are in short supply. This paper discusses the development and application of a renewable-energy-driven reverse osmosis (RO) system for water desalination and the treatment and reuse of aquaculture wastewater. The system consists of (1) a wind-driven pumping subsystem, (2) a pressure-driven RO membrane desalination subsystem, and (3) a solar-driven feedback control module. The results of the pilot experiments indicated that the system, operated under wind speeds of 3 m s-1 or higher, can be used for brackish water desalination by reducing the salinity of feedwater with total dissolved solids (TDS) of over 3 000 mg L-1 to product water or permeate with a TDS of 200 mg L-1 or less. Results of the pilot experiments also indicated that the system can remove up to 97% of the nitrogenous wastes from the fish pond effluent and can recover and reuse up to 56% of the freshwater supply for fish pond operation.
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Received: 17 October 2012
Accepted:
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| Fund: This study was supported in part by the U.S. Department of the Interior Bureau of Reclamation (USBR) through a research grant (04-FG-81-1062). |
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Corresponding Authors:
Correspondence Clark C K Liu, Tel: +1-808-9567658, E-mail: clarkliu@hawaii.edu
E-mail: clarkliu@hawaii.edu
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Cite this article:
Clark C K Liu.
2013.
The Development of a Renewable-Energy-Driven Reverse Osmosis System for Water Desalination and Aquaculture Production. Journal of Integrative Agriculture, 12(8): 1357-1362.
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