Two layer wound-on-core medium filter element

Details Two layer wound-on-core medium filter element Two layer wound-on-core medium filter element

B - Operations, Transporting

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182/70

B01D 29/11 (2006.01) B01D 37/02 (2006.01) B01J 47/12 (2006.01)

Patent

CA 1120867

TWO LAYER WOUND-ON-CORE MEDIUM FILTER ELEMENT ABSTRACT OF THE DISCLOSURE A filter element having a perforated tubular core and a plurality of layers of strand material wound about the tubular core. The outermost layer has the ability to retain particles smaller than those retained by the innermost layer. The size range of particles retained by the outermost layer is from one to twenty-five microns and the size range of particles retained by the innermost layer is from twenty- five to one hundred microns, According to the method of invention, the filter element is used to purify liquids through the steps of precoating, delivering liquid through the filter, periodically backwashing the filter, and pre- coating the filter again.

319714

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