Apparatus and method for cleaning membrane filtration modules

a technology of filtration module and apparatus, which is applied in the direction of filtration separation, membranes, separation processes, etc., can solve the problems of large energy consumption, inability to achieve continuous filtering, so as to improve the quality of filtrate and reduce the residence time

a technology of filtration module and apparatus, which is applied in the direction of filtration separation, membranes, separation processes, etc., can solve the problems of large energy consumption, inability to achieve continuous filtering, so as to improve the quality of filtrate and reduce the residence time

US20050109692A1Inactive Publication Date: 2005-05-26SIEMENS IND INC
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  • Apparatus and method for cleaning membrane filtration modules
  • Apparatus and method for cleaning membrane filtration modules
  • Apparatus and method for cleaning membrane filtration modules

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Embodiment Construction

[0041] Referring to the drawings, the embodiments of the invention will be described in relation to a membrane module of the type disclosed in our earlier PCT application No. WO98 / 28066 which is incorporated herein by cross-reference, however, it will be appreciated that the invention is equally applicable to other forms of membrane module. The membrane module 5 typically comprises fibre, tubular or flat sheet form membranes 6 potted at two ends 7 and 8 and encased in a support structure, in this case a screen 9. Either one or both ends of the membranes may be used for the permeate collection. The bottom of the membrane module has a number of through apertures 10 in the pot 11 to distribute a mixture of gas and liquid feed past the membrane surfaces.

[0042] Referring to the embodiment shown in FIG. 1, a venturi device 12 or the like is connected to the base of the module. The venturi device 12 intakes gas through inlet 13, mixes or entrains the gas with liquid flowing through feed i...

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Abstract

A method and apparatus for cleaning a membrane module, the membrane module having a plurality of porous membranes, the membranes being arranged in close proximity to one another and mounted to prevent excessive movement therebetween and means for providing, from within the module, by means other than gas passing through the pores of the membranes, gas bubbles entrained in a liquid flow such that, in use, the liquid and bubbles entrained therein move past the surfaces of the membranes to dislodge fouling materials therefrom, the gas bubbles being entrained in the liquid by flowing the liquid past a source of gas to draw the gas into the liquid flow. The gas bubbles are preferably entrained into the liquid using a venturi type device. The membranes are preferably partitioned into discrete groups to assist cleaning while maintaining high packing density.

Description

RELATED APPLICATIONS [0001] This application is a continuation of application Ser. No. 10 / 822,036, filed Apr. 8, 2004, which is a continuation of application Ser. No. 10 / 428,601, filed May 1, 2003, now U.S. Pat. No. 6,821,420, which is a division of application Ser. No. 10 / 303,447, filed Nov. 21, 2002, now U.S. Pat. No. 6,641,733, which is a continuation of application Ser. No. 09 / 815,966, filed Mar. 23, 2001, now U.S. Pat. No. 6,524,481, which is a continuation under 35 U.S.C. §120 of International Patent Application No. PCT / AU99 / 00817 filed on Sep. 24, 1999, under the Patent Cooperation Treaty (PCT), which was published by the International Bureau in English on April 6, 2000, which designates the United States, and which claims the benefit of Australian Provisional Patent Application No. PP 6217 filed on Sep. 25, 1998, Australian Provisional Patent Application No. PP 6218 filed on Sep. 25, 1998, and Australian Provisional Patent Application No. PQ 1112 filed on Jun. 21, 1999.FIELD...

Claims

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Application Information

Patent Timeline
26 May 2005
Publication
US20050109692A1
IPC
B01D63/02; B01D65/02; B01D65/08; C02F3/12
CPC
B01D63/02; B01D63/024; B01D65/02; B01D65/08; B01D2315/06; B01D2321/16; B01D2321/185; C02F3/1273
Inventors
ZHA, FUFANG; JORDAN, EDWARD JOHN