AERATING DEVICE FOR A WATER FILTERING SYSTEM WITH IMMERSED MEMBRANES, INCLUDING A FLOOR PROVIDED WITH MEANS FOR INJECTING A GAS AND AT LEAST ONE PRESSURE BALANCING SYSTEM
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Abstract
An aerating device for a water treatment system includes an upper and lower chamber separated by a partition. The upper chamber includes a plurality of immersed membranes for removing contaminants from the water. The lower chamber includes a gas inlet and a water inlet for directing gas and water to be treated respectively into the lower chamber. The water inlet is disposed at a lower depth in the lower chamber than the gas inlet. A plurality of air dispersers extend through the partition from the lower chamber to the upper chamber for directing gas from the lower chamber to the upper chamber to aerate the immersed membranes. Finally, the device includes at least one passageway extending through the partition from the lower chamber to the upper chamber for directing water to be treated from the lower chamber to the upper chamber.
25 Citations
34 Claims
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1-13. -13. (canceled)
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14. A water treatment system, comprising:
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an upper chamber and a lower chamber separated by a partition; the upper chamber including a plurality of immersed membranes for removing contaminants from the water; the lower chamber including a gas inlet and a water inlet for directing gas and water respectively into the lower chamber, the water inlet disposed at a lower depth in the lower chamber than the gas inlet; a plurality of air dispersers extending through the partition from the lower chamber to the upper chamber for directing gas from the lower chamber to the upper chamber to aerate the immersed membranes; and at least one passageway extending through the partition from the lower chamber to the upper chamber for directing water from the lower chamber to the upper chamber. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A method of treating water, the method comprising:
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directing gas from a gas inlet into a lower chamber and into a plurality of plurality of air dispersers; directing water to be treated from a water inlet into the lower chamber and into a passageway; forming a gas layer in the lower chamber below the plurality of air dispersers to prevent water from entering the plurality of air dispersers in the lower chamber; distributing gas into an upper chamber by directing the gas entering the plurality of air dispersers into the upper chamber; aerating a plurality of membranes disposed in the upper chamber with the gas distributed in the upper chamber; and filtering the water with the plurality of membranes disposed in the upper chamber by directing water through the passageway into the upper chamber. - View Dependent Claims (33, 34)
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Specification