Journal
DESALINATION
Volume 242, Issue 1-3, Pages 215-227Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.desal.2008.04.008
Keywords
Electrodialysis; Brine discharged; Gypsum seeding
Categories
Funding
- German-Israel research program (BMBF)
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Electrodialysis (ED) experiments were carried Out on RO brine solutions, Saturated with CaSO(4) and or silica with the aim to increase their concentrations from 1.5 to 10%, thus reducing both effluent Volume and disposal costs. A pilot plant ED unit was built in which the brine circulating through the ED brine cells passed through a separate CaSO(4) precipitator containing gypsum seeds. The feed to the ED unit was the brine discharged from the RO unit, which was operating on brackish water from Mashabei-Sadeh. The salt concentration of the ED feed was reduced to 18-20 mN and was then mixed with the RO permeate.
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