MEMBRANE FILTRATION PROCESS AND DESIGN
First Claim
1. A membrane filtration system including:
- a feed containing vessel;
a membrane module including one or more hollow permeable membranes for filtering feed liquid, located in said feed containing vessel;
means for applying a pressure differential across walls of said membrane to induce filtration therethrough;
a feed liquid reservoir in fluid communication with said membrane module to supply feed liquid thereto;
to a source of feed liquid;
a source of gas;
means for selectively producing a flow of gas from said gas source and feed liquid from said feed liquid source through said membrane module and into said feed liquid reservoir,said flow of gas producing gas bubbles within said feed liquid to clean said membranes.
3 Assignments
0 Petitions
Accused Products
Abstract
A membrane filtration system (5) including: a feed containing vessel (7); a membrane module (6) including one or more hollow permeable membranes (8) for filtering feed liquid, located in the feed containing vessel (7); means for applying a pressure differential across walls of the membranes (8) to induce filtration therethrough; a feed liquid reservoir (9) in fluid communication with the membrane module (6) to supply feed liquid thereto; a source of feed liquid (12); a source of gas (10) and means (11) for selectively producing a flow of gas from the gas source (10) and feed liquid from the feed liquid source (12) through the membrane module (6) and into the feed liquid reservoir (9). The flow of gas producing gas bubbles within the feed liquid to clean the membranes (8).
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Citations
17 Claims
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1. A membrane filtration system including:
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a feed containing vessel; a membrane module including one or more hollow permeable membranes for filtering feed liquid, located in said feed containing vessel; means for applying a pressure differential across walls of said membrane to induce filtration therethrough; a feed liquid reservoir in fluid communication with said membrane module to supply feed liquid thereto; to a source of feed liquid; a source of gas; means for selectively producing a flow of gas from said gas source and feed liquid from said feed liquid source through said membrane module and into said feed liquid reservoir, said flow of gas producing gas bubbles within said feed liquid to clean said membranes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of filtering filtrate from a multi-component feed liquid including the steps of:
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providing a source of said feed liquid; providing a source of gas; flowing gas from said source of gas through a membrane filtration module, including one or more hollow permeable membranes, into a feed liquid reservoir located above said membrane filtration module to produce gas bubbles within and/or around the membranes to remove accumulated solids therefrom; flowing feed liquid from the source of feed liquid past the membranes within said module to sweep said removed solid from the membrane filtration module; and producing filtration of feed liquid through a wall of said membranes by application of static or driven head pressure from feed liquid held in said feed liquid reservoir. - View Dependent Claims (17)
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Specification