MEMBRANE FILTRATION SYSTEM
First Claim
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1. A method of operating a membrane system which receives a fluid at an input of the membrane system and provides a permeate output and a concentrate output;
- the method comprising the steps of;
receiving at least a portion of a permeate output from the membrane system;
receiving at least a portion of a concentrate output from the membrane system;
recirculating both the received portion of the permeate output of the membrane system and the received portion of the concentrate output of the membrane system back to the input of the membrane system; and
passing together the received portion of the permeate output of the membrane system and the received portion of the concentrate output of the membrane system through the membrane system.
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Abstract
A membrane system is disclosed. The membrane system may include a treatment process wherein both at least a portion of a permeate output of the membrane system and a concentrate output of the membrane system are recirculated back to an input of the membrane system. The membrane system may include a treatment process wherein a higher level permeate is used to treat the membrane system. The membrane system may include a storage reservoir to store at least a portion of the concentrate output of a purge cycle of the membrane system.
55 Citations
39 Claims
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1. A method of operating a membrane system which receives a fluid at an input of the membrane system and provides a permeate output and a concentrate output;
- the method comprising the steps of;
receiving at least a portion of a permeate output from the membrane system; receiving at least a portion of a concentrate output from the membrane system; recirculating both the received portion of the permeate output of the membrane system and the received portion of the concentrate output of the membrane system back to the input of the membrane system; and passing together the received portion of the permeate output of the membrane system and the received portion of the concentrate output of the membrane system through the membrane system. - View Dependent Claims (2, 3, 4)
- the method comprising the steps of;
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5. A method of operating a membrane system which receives a fluid at an input and provides a permeate output and a concentrate output;
- the method comprising the steps of;
providing a cleaning fluid to the input of the membrane system; passing the cleaning fluid through the membrane system; mixing at least a portion of the concentrate output produced by the membrane system from the cleaning fluid with at least a portion of the permeate output produced by the membrane system from the cleaning fluid; and passing at least a portion of the mixture through the membrane system. - View Dependent Claims (6, 7, 8)
- the method comprising the steps of;
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9-19. -19. (canceled)
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20. A method of operating a membrane system which receives a fluid at an input of the membrane system and provides a permeate output and a concentrate output;
- the method comprising the steps of;
(a) performing a first run cycle with the membrane system, wherein a first input fluid is separated into a first permeate fluid and a first concentrate fluid and wherein materials from the first input fluid are left within the membrane system; (b) performing a purge cycle of the membrane system by passing a first cleaning fluid through the membrane system; (c) performing a secondary purge cycle of the membrane system by passing a second cleaning fluid through the membrane system, the second cleaning fluid includes at least about 10% of a higher level permeate; (d) recirculating both a portion of a permeate output fluid of the secondary purge cycle and a portion of a concentrate output fluid of the secondary purge cycle back to the input of the membrane; and (e) performing a second run cycle with the membrane system, wherein a second input fluid is separated into a second permeate fluid and a second concentrate fluid, the second input fluid including at least a portion of a concentrate fluid produced during at least one of steps (b)-(d). - View Dependent Claims (21, 22, 23, 24, 25, 26, 37, 38, 39)
- the method comprising the steps of;
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27-36. -36. (canceled)
Specification