Hollow-fibre membrane module

  • US 9,248,409 B2
  • Filed: 01/27/2011
  • Issued: 02/02/2016
  • Est. Priority Date: 01/28/2010
  • Status: Active Grant
First Claim
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1. A hollow fiber membrane module comprising:

  • a plurality of submodules in which raw water is circulated and water treatment is carried out, each submodule extending between a proximal end and a distal end;

    a piping unit connected to the submodules at the proximal end, the piping unit having multiple pipes for independently transporting the raw water, air, and treated water; and

    a discharge port provided at a distal end of the submodules in communication with the air;

    wherein an interior of each submodule is partitioned to a water treatment region in which water treatment is carried out using a hollow fiber membrane, and a raw water circulation passage which circulates raw water to the water treatment region;

    wherein in the water treatment region, the raw water is treated during upward movement by air supplied from a diffusion pipe which is disposed in outside of the water treatment region;

    wherein each submodule comprises;

    a housing provided at one side thereof with a raw water inlet port through which raw water is introduced, an air inlet port through which air is introduced, and an outlet port through which treated water is discharged;

    at least one partition wall installed in the housing to partition an interior of the housing into the water treatment region and the raw water circulation passage, the at least one partition wall being provided at opposite ends thereof with holes through which raw water flows;

    a fixing part to couple the hollow fiber membrane to the housing;

    a collector in communication with the outlet port and an internal passage of the hollow fiber membrane to collect treated water having passed through the hollow fiber membrane; and

    an air diffusion pipe in communication with the air inlet port of the housing to spray air bubbles to the hollow fiber membrane; and

    wherein the treated raw water is introduced into the upper part of the raw water circulation passage through an upper end hole, and the flow velocity of the treated raw water is increased during downward movement through the raw water circulation passage, and the treated raw water is circulated to the water treatment region through a lower end hole, repeatedly.

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