Clean Technology 2010

Innovative Cost-effective Pre-treatment for Desalination

M.H. Lean, J. Seo, A. Kole, A.R. Volkel, N. Chang, B. Hsieh, K. Melde
Palo Alto Research Center, US

Keywords: membrane-less filtration, neutrally buoyant suspensions, aggregation kinetics, fluid shear


This paper describes an innovative technology to pre-treat feed water for desalination. An inline coagulation-flocculation-separation (CFS) system is detailed that does not require filtration or sedimentation. Advantages include: scalability, modularity, rapid processing, low energy, and low maintenance. In comparison with conventional and membrane pre-treatments, this technology may allow reductions in capital cost by 30-70%, operations and maintenance cost by 30-40% and land use by 58-77%.
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