1. Title, Journal and Authors

Title : Energy saving methodology for the SWRO desalination process: control of operating temperature and pressure

Journal : Surveys in Operations Research and Management Science (2014) 56-85

Authors : Seung Joon Kim^a, Young Geun Lee^a, Sanghoun Oh^b, Yun Seok Lee^a, Young Mi Kim^a, Moon Gu Jeon^b, Sangho Lee^c, In S, Kim^a,d, Joon Ha Kim^a,d,e,*

^aDepartment of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea

^bDepartment of Information and communications, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea

^cDepartment of Environmental Research, Korea Institute of Construction Technology, Gyeonggi-do Korea

^dCenter for Seawater Desalination Plant, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712l, Korea

^eSustainable Water Resource Technology Center, GIST, Gwangju 500-712, Korea

Tel. 82-62-970-3277, e-mail: Joonkim@gist.ac.kr

 

2. Summary

 

 There’s so many factors affect seawater reverse osmosis(SWRO), including the operating pressure, concentration polarization, degree of fouling, degree of scaling, water quality, specific membrane characteristics, and temperature. The writer take temperature as the primary factor in the SWRO, since it causes not only an increase in the osmotic pressure but also a decrease of the water viscosity, which makes membrane more permeable. For this reason, higher temperature condition in the entire process leads to an increase in both the permeate flow rate and the total dissolved solids(TDS). In this paper, the writers created the 2 functional models. They use a genetic programming(GP), well known as a novel technique, with four years of operation data obtained from Fujairah SWRO plant. The first model involved the permeate water flow rate with a functional temperature correction factor(TCF), salt transfer coefficient, and net driving pressure(NDP) and the second is salt passage ratio with a functional TCF, salt transfer coefficient, and TDS.

 After running the optimized process, it was found that the permeate flow rate could be increased by approximately 900 m³ /day   under a steady condition of 600 ppm in TDS.

 

 

 

3. Contact

 

Sungryul Kim / Intern student

 

Environmental Systems Engineering Lab.

 

Gwangju Institute of Science and Technology

 

 

 

Phone : +82-10-2788-2169

 

E-mail : fuf1994@naver.com