Hollow Fiber Element - Reverse Osmosis Systems Print E-mail

Hollow Fiber Element - Hollow fiber elements represent one of four possible RO membrane configurations (others configurations are spiralwound, plate and frame, and tubular).

Hollow fiber elements are made of extruded cellulose acetate or polyamide material. Pressurized feed water passes across the outside of the fibers. Pure water permeates the fibers and is collected at the end of the element. Hollow fibers were among the first reverse osmosis systems.

The hollow fiber element does not allow for turbulent flow or uniform flow across the fiber surface making these elements more prone to fouling and scaling. Once fouled the hollow fiber elements are more difficult to clean due to the inability to get the cleaning solution to the fouled area. Hollow fiber elements are mostly found in seawater desalination applications and limited brackish water applications where fouling potential is minimal.

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