MEMBRANE MODULE PROTECTION
First Claim
Patent Images
1. A filtration system for removing fine solids from a liquid suspension comprising:
- a vessel for containing said liquid suspension;
one or more permeable, membranes within the vessel;
means for providing a pressure differential across walls of said membranes such that some of the liquid suspension passes through the walls of the membranes to be drawn off as permeate;
a screen positioned in a flow path of the liquid suspension through to said membrane walls; and
means for withdrawing permeate from the membranes.
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Abstract
A filtration system for removing fine solids from a liquid suspension comprising a vessel for containing the liquid suspension, one or more permeable, membranes (9) within the vessel, means for providing a pressure differential across walls of the membranes (9) such that some of the liquid suspension passes through the walls of the membranes (9) to be drawn off as permeate and means for withdrawing the permeate from the membranes. A screen (8) is positioned in a flow path of the liquid suspension through to the membrane walls.
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Citations
28 Claims
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1. A filtration system for removing fine solids from a liquid suspension comprising:
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a vessel for containing said liquid suspension; one or more permeable, membranes within the vessel; means for providing a pressure differential across walls of said membranes such that some of the liquid suspension passes through the walls of the membranes to be drawn off as permeate; a screen positioned in a flow path of the liquid suspension through to said membrane walls; and means for withdrawing permeate from the membranes. - View Dependent Claims (7, 8, 9, 11, 12, 13, 14, 15, 16, 23)
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2. A filtration system comprising:
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a membrane module comprising a plurality of permeable membranes, each of the membranes having a first end and a second end, the membranes having one of said ends extending from and mounted to at least one potting head, and a screen surrounding the membranes.
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3. A filtration system comprising:
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a membrane module comprising a plurality of permeable membranes, each of the membranes having a first end and a second end, the membranes having one of said ends extending from and mounted to at least one potting head, said module having an upper and a lower end; a screen surrounding the membranes and extending between said upper and lower ends of said module; and an opening being provided in said screen at or adjacent said upper end of the module. - View Dependent Claims (4, 5, 6)
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10. A filtration system according to claim wherein the screen is connected to and extends from said potting head.
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17. A membrane module, comprising:
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a plurality of permeable membranes, said membranes being arranged in close proximity to one another to form an array, the module having a header in which one end of each of the membranes is mounted and a screen surrounding said array of membranes. - View Dependent Claims (18, 19, 20, 21, 22, 24, 25, 26)
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27. A method for filtering a feed liquid comprising the steps of:
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providing a vessel; providing a membrane module, the membrane module comprising; a plurality of permeable membranes, and a fine screen surrounding the plurality of membranes, wherein the membrane module is contained within the vessel; and the membranes comprising a plurality of pores and an outer surface, providing a feed liquid to the vessel; applying a transmembrane pressure to the membranes in the module, whereby a filtrate passes through pores in the membranes, thereby producing a concentrated feed comprising a fouling material in the vessel; and removing the fouling material from the vessel. - View Dependent Claims (28)
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Specification