SEWAGE TREATMENT
First Claim
Patent Images
1. A membrane comprising:
- a support membrane having a liquid face and a gas face;
a gas face biolayer at a location selected from on the gas face, in the support membrane s near the gas face, and both on the gas face and in the support membrane; and
a liquid face biolayer at a location selected from on the liquid face, in the support membrane near the liquid face, and both on the liquid face and in the support membrane.
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Accused Products
Abstract
The present invention discloses a membrane, optionally for use in sewage treatment. The membrane comprises a support membrane having a gas face biolayer on a gas face of the membrane and/or in the support membrane near the gas face, and a liquid face biolayer on a liquid face of the membrane and/or in the support membrane near the liquid face.
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Citations
34 Claims
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1. A membrane comprising:
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a support membrane having a liquid face and a gas face; a gas face biolayer at a location selected from on the gas face, in the support membrane s near the gas face, and both on the gas face and in the support membrane; and a liquid face biolayer at a location selected from on the liquid face, in the support membrane near the liquid face, and both on the liquid face and in the support membrane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A bioreactor comprising:
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a membrane comprising a support membrane having a liquid face and a gas face;
a gas face biolayer at a location selected from on the gas face, in the support membrane near the gas face, and both on the gas face and in the support membrane; and
a liquid face biolayer at a location selected from on the liquid face, in the support membrane near the liquid face, and both on the liquid face and in the support membrane;a support for supporting the membrane; and a liquid cycling system for passing a liquid past the membrane. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A process for making a membrane comprising:
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providing a support membrane, —
contacting a liquid derived from sewage or containing bacteria from sewage with a first face of the support membrane and exposing a second face of the support to a gas containing oxygen,allowing growth of liquid face bacteria to form a liquid face biolayer on the first face; and
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allowing growth of gas face bacteria to form a gas face biolayer on the second face. - View Dependent Claims (23, 24)
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25. A process for making a bioreactor comprising:
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supporting a membrane on a support, said membrane comprising a support membrane having a liquid face and a gas face;
a gas face biolayer at a location selected from on the gas face, in the support membrane near the gas face, and both on the gas face and in the support membrane; and
a liquid face biolayer at a location selected from on the liquid face, in the support membrane near the liquid face, and both on the liquid face and in the support membrane; andproviding a liquid cycling system for passing a liquid past the membrane. - View Dependent Claims (26)
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27. A process for making a bioreactor comprising:
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supporting a support membrane on a support; providing a liquid cycling system for passing a liquid past the support membrane; contacting a liquid derived from sewage with a first face of the support membrane and exposing a second face of the support to a gas containing oxygen, allowing growth of liquid face bacteria to form a liquid face biolayer at a location selected from on the first face, in the support membrane near the first face, and both on the first face and in the support membrane; and allowing growth of gas face bacteria to form a gas face biolayer at a location selected from on the second face, in the support membrane near the second face, and both on the second face and in the support membrane. - View Dependent Claims (28, 29)
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30. A method for treating sewage or some other waste stream, said method comprising:
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providing a membrane comprising a support membrane having a liquid face and a gas face;
a gas face biolayer at a location selected from on the gas face, in the support membrane near the gas face, and both on the gas face and in the support membrane; and
a liquid face biolayer at a location selected from on the liquid face, in the support membrane near the liquid face, and both on the liquid face and in the support membrane;exposing the liquid face biolayer of the membrane to the sewage or other waste stream; and exposing the gas face biolayer of the membrane to a gas containing oxygen. - View Dependent Claims (31, 32, 33)
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34. A method for treating sewage comprising:
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providing a bioreactor comprising a membrane comprising a support membrane having a liquid face and a gas face;
a gas face biolayer at a location selected from on the gas face, in the support membrane near the gas face, and both on the gas face and in the support membrane; and
a liquid face biolayer at a location selected from on the liquid face, in the support membrane near the liquid face, and both on the liquid face and in the support membrane;
a support for supporting the membrane; and
a liquid cycling system for passing a liquid past the membrane, said liquid cycling system comprising a pump for pumping the liquid, an inlet manifold for passing the liquid to the membrane, an outlet manifold for accepting liquid from the membrane, a reservoir for holding the liquid, an influent line for passing liquid from the reservoir to the inlet manifold and an effluent line for passing liquid from the outlet manifold to the reservoir;passing a liquid derived from the sewage through the inlet manifold and into the inlet; passing the liquid derived from the sewage past the membrane and out the outlet; passing the liquid derived from the sewage into the reservoir; and pumping the liquid derived from the sewage through the influent line to the inlet manifold by means of the pump.
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Specification