US20020148767A1 - Membrane filtration manifold system - Google Patents

Membrane filtration manifold system Download PDF

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Publication number
US20020148767A1
US20020148767A1 US10/045,186 US4518601A US2002148767A1 US 20020148767 A1 US20020148767 A1 US 20020148767A1 US 4518601 A US4518601 A US 4518601A US 2002148767 A1 US2002148767 A1 US 2002148767A1
Authority
US
United States
Prior art keywords
membrane filtration
submodule
collar
manifold
filtration apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/045,186
Other languages
English (en)
Inventor
Warren Johnson
Gary Stollery
Bruce Biltoft
David Cox
Robert McMahon
David Wood
Leon Ernst
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
US Filter Wastewater Group Inc
Original Assignee
Johnson Warren Thomas
Stollery Gary William
Biltoft Bruce Gregory
Cox David John
Mcmahon Robert James
David Wood
Ernst Leon Keith
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Johnson Warren Thomas, Stollery Gary William, Biltoft Bruce Gregory, Cox David John, Mcmahon Robert James, David Wood, Ernst Leon Keith filed Critical Johnson Warren Thomas
Publication of US20020148767A1 publication Critical patent/US20020148767A1/en
Assigned to U.S. FILTER WASTEWATER GROUP, INC. reassignment U.S. FILTER WASTEWATER GROUP, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ERNST, LEON KEITH, WOOD, DAVID, STOLLERY, GARY WILLIAM, BILTOFT, BRUCE GREGORY, COX, DAVID JOHN, JOHNSON, WARREN THOMAS, MCMAHON, ROBERT JAMES
Priority to US10/718,756 priority Critical patent/US7264716B2/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B01D63/04—Hollow fibre modules comprising multiple hollow fibre assemblies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B01D63/031—Two or more types of hollow fibres within one bundle or within one potting or tube-sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B01D63/04—Hollow fibre modules comprising multiple hollow fibre assemblies
    • B01D63/046—Hollow fibre modules comprising multiple hollow fibre assemblies in separate housings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/06—External membrane module supporting or fixing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/12—Specific discharge elements
    • B01D2313/125—Discharge manifolds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/21—Specific headers, end caps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2315/00—Details relating to the membrane module operation
    • B01D2315/06—Submerged-type; Immersion type

Definitions

  • the present invention relates to membrane filtration manifold systems. More particularly the invention relates to membrane filtration manifold systems for hollow fibre membrane filters comprising elongate bundles of hollow fibre membranes, wherein feed to be filtered is fed to the outside of the bundles of fibres and filtrate is extracted from the end or ends of the fibre lumens.
  • the systems also preferably incorporate a cleaning facility for periodic cleansing of the feed surfaces of the fibres.
  • the invention has been developed primarily for use in a membrane filtration system which is open to atmospheric pressure and will be described hereinafter with reference to this application. However, it will be appreciated that the invention is not limited to this particular field of use.
  • Typical prior art filtration manifolds are employed in filtration systems of the type described above. These filtration systems generally include elongate tubular cartridges enclosing a bundle of the hollow fibre membranes. Manifold or header arrangements are used to connect the cartridges, usually at one or both ends, these manifolds acting to separate and divert the respective flows of the contaminated feed. filtrate and cleaning fluid through the system.
  • cross-flow systems typically have two feed manifolds (inlet and re-circulation outlet) and one or two filtrate manifolds.
  • the feed stream to be filtered flows tangential to or across the surface of the membrane. This generates a sweeping action at the membrane surface, keeping the surface cleaner.
  • systems configured for dead end operations utilise only one feed inlet manifold and one filtrate outlet manifold during filtration mode.
  • these prior art manifolds or header arrangements are often configured to facilitate the construction of modular two or three dimensional cartridge arrays.
  • feed fluid to be filtered
  • the elongate tubular filtration cartridges are encased in pressure tight housings.
  • Such housings are then connected to a manifold system which both separates the feed from the filtrate and supports the pressure tight housing.
  • the manifold system may also serve to introduce cleaning fluid to the filtration system.
  • Prior art filtration systems may also be open to the atmosphere.
  • feed is drawn through the membranes under negative pressure. This is achieved by applying a negative, or suction, pressure on the filtrate side of the membrane.
  • Such systems tend to employ less infrastructure and capital works compared with systems closed to the atmosphere as they do not require components that are able to contain relatively higher pressures. For example, there is no need to encase filtration cartridges in individual pressure tight housings in systems open to atmosphere. Typically in these systems, the filtration cartridges are merely substantially immersed in an open tank containing the feed.
  • an appropriate manifold be provided to both support the filter cartridges and to allow the filtrate to be drawn from the filter while separating the feed from the filtrate.
  • a manifold may also serve the purpose of supporting a cleaning fluid system.
  • Prior art filtration systems and their associated filtration cartridges referred to above are often a complex configuration of pipes and parts which are difficult and time consuming to assemble. Further more, the actual manifold system components of the prior art filtration systems are often a complex assembly of parts in themselves.
  • a membrane filtration manifold for connecting a filter submodule of the kind including one or more elongate bundles of semipermeable polymeric fibres, said manifold including:
  • At least one submodule connecting collar connected with said housing, said collar being adapted to receive and locate said submodule having a connecting sleeve with a locking formation whereby the submodule can be secured at one end with the collar by a clip means adapted to engage both said collar and said locking formation to prevent axial withdrawal of said submodule from said collar.
  • said locking formation includes a circumferential flange formed on said sleeve.
  • the housing and collars of the manifold include passageways for fluid communication between the housing and collars.
  • the housing includes a removable cap for fluid-tight sealing engagement with the housing.
  • a membrane filtration apparatus including:
  • a filter submodule of the kind including one or more elongate bundles of semipermeable polymeric fibres
  • said headpiece being a membrane filtration manifold according to the first aspect of the invention.
  • a membrane filtration apparatus bank including:
  • a filtrate conduit connected to at least one membrane filtration apparatus
  • a cleaning fluid conduit connected to at least one membrane filtration apparatus.
  • the module groups are arranged in an upright position, said filtrate conduit being proximally above said headpieces and said cleaning fluid conduit being proximally above said basepieces.
  • a membrane filtration apparatus array including a plurality of membrane filtration apparatus banks according to the third aspect of the invention connected in parallel by an array filtrate conduit.
  • a membrane filtration apparatus array train including:
  • FIG. 1 is a perspective view of a membrane filtration manifold according to the invention
  • FIG. 2 is another perspective view of the membrane filtration manifold of FIG. 1;
  • FIG. 3 is a sectional view showing a submodule connected to a manifold collar by a locking clip
  • FIG. 4 a is an isometric view of the preferred embodiment of the clip
  • FIG. 4 b is an isometric view of the preferred embodiment of the clip of FIG. 4 a;
  • FIG. 4 c is an isometric view of an alternate embodiment of the clip
  • FIG. 5 is a cross sectional side elevation of the locking clip of FIG. 4 a;
  • FIG. 6 a is a detail view of the collar
  • FIG. 6 b is another detail view of the collar
  • FIG. 7 a is a plan view of an embodiment of the connecting sleeve for filtration modules
  • FIG. 7 b is a sectional view of the connecting sleeve of FIG. 8 a taken on line A-A of FIG. 7 a;
  • FIG. 7 c is a side elevation of the connecting sleeve of FIG. 7 a;
  • FIG. 8 a is a plan view of an alternate embodiment of the connecting sleeve for filtration modules:
  • FIG. 8 b is a sectional view of the connecting sleeve of FIG. 8 a taken on line B-B of FIG. 8 a;
  • FIG. 8 c is a side elevation of the connecting sleeve of FIG. 8 a;
  • FIG. 9 a is a perspective view of a cap
  • FIG. 9 b is another perspective view of the cap of FIG. 9 a;
  • FIG. 10 is a perspective view of the membrane filtration manifold of FIG. 1 showing the cap of FIG. 9 a in use;
  • FIG. 11 is a side elevation of a membrane filtration apparatus bank
  • FIG. 12 a is a side cross sectional elevation of an embodiment of the membrane filtration manifold in basepiece configuration, showing cleaning fluid flow from the cleaning fluid conduit through the basepiece;
  • FIG. 12 b is a front cross sectional elevation of an embodiment of the membrane filtration manifold in basepiece configuration, showing cleaning fluid flow from the cleaning fluid conduit through the basepiece;
  • FIG. 13 is a plan view of a membrane filtration apparatus array
  • FIG. 14 is a perspective view showing one membrane filtration apparatus bank in a membrane filtration apparatus array.
  • FIG. 15 is an isometric view of a membrane filtration apparatus train.
  • the membrane filtration manifold system includes a membrane filtration manifold 1 for connecting filter submodules 2 of the kind comprising elongate bundles of hollow fibre membranes.
  • the preferred embodiment of the manifold includes a housing 3 connected with four submodule connecting collars 4 .
  • the collars 4 are adapted to receive and locate submodules 2 having a connecting sleeve 5 with a locking flange 6 .
  • the submodule 2 can be secured at one end with its respective collar 4 by a clip 7 which simultaneously engages the submodule 2 and locking flange 6 to prevent axial withdrawal of the submodule 2 from the collar 4 .
  • the locking flange 6 further engages bearingly with a lip 8 of the collar 4 .
  • Engaging and releasing the clip 7 enables substantially simple respective assembly and removal of the submodules 2 from the manifold 1 .
  • the manifold 1 further includes filtrate passageways 9 for fluid communication between the housing 3 and collars 4 and cleaning fluid passageways 10 for cleaning fluid communication with a cleaning fluid conduit 11 .
  • FIGS. 4 a , 4 b and 5 show the preferred embodiment of the clip 7 .
  • the clip 7 has a substantially cylindrical sidewall 12 with a top and bottom flange 13 and 14 , each of which projects radially inwardly from the sidewall 12 .
  • the clip 7 is split in a line parallel to the central axis of the submodule 2 to allow radial expansion of the clip when slid axially into and out of locking engagement with the collar 4 . Radial expansion is achieved by manually parting a pair of projections 40 provided on the top flange 13 of the clip, on either side of the split respectively.
  • the clip 7 is resiliently biased to enable radial contraction of the clip when the clip snap-lockingly engages with both the submodule 2 and collar 4 .
  • bottom flange 14 locks over the submodule flange 6 and top flange 13 bearingly engages with the lip 8 .
  • the collar 4 has a stepped seat 15 for locking engagement with top flange 13 .
  • FIG. 4 c shows an alternate embodiment of the clip 7 .
  • This embodiment has additional projections 41 to aid in the manual removal of the clip 7 from both the submodule 2 and collar 4 .
  • the additional projections 41 extend radially from the sidewall 12 of the clip 7 , on either side of the split of the sidewall 12 .
  • FIGS. 7 a - c and 8 a - c show embodiments of the submodule connection sleeves 5 .
  • These Figures show detail of the flange 6 and ‘o’-ring seat channel 17 features of the connection sleeves 5 .
  • One side 18 of the flange 6 is for bearing engagement with the collar 4 and a second side 19 is for locking engagement with the clip 7 .
  • the embodiment of the submodule connection sleeve 5 shown in FIGS. 7 a - c has one channel 17 for use as an ‘o’-ring seat
  • the embodiment of the submodule connection sleeve 5 shown in FIGS. 8 a - c has two channels 17 for use as ‘o’-ring seats.
  • the manifold 1 may also include a removable cap 20 , for fluid-tight sealing engagement with the housing.
  • the preferred embodiment of the cap shown in FIGS. 9 a and 9 b , includes a disc 21 with an axially extending threaded shaft 22 mounted to its centre on one side.
  • the disc 21 also has projections 23 on the other side to facilitate manual turning of the cap 20 .
  • the cap will be described in more detail below.
  • a radially spaced flange 24 extends axially outwardly from the cap 20 on the same side of the cap as the shaft 22 . This flange allows fluid tight sealing engagement of the cap 20 with the housing 1 .
  • FIG. 10 shows the preferred embodiment of the cap 20 in use.
  • a membrane filtration apparatus 25 includes a headpiece 26 and a basepiece 27 , each being an embodiment of the membrane filtration manifold 1 as described above, and connected to four membrane filter submodules 2 .
  • Each headpiece 26 connects to a filtrate conduit 28 allowing fluid communication between each headpiece 26 and the filtrate conduit 28 .
  • the cap 20 is not required when the membrane filtration manifold 1 is used as a headpiece 26 . Absence of the cap 20 allows fluid communication between the manifold 1 and the filtrate conduit 28 .
  • each basepiece 27 is connected to a cleaning fluid conduit 11 allowing fluid communication between each basepiece 27 and the cleaning fluid conduit 11 .
  • the threaded shaft 22 of the cap 20 is threadedly engaged with a corresponding bore on the cleaning fluid conduit 11 .
  • the clip 7 is not required to lock the submodule 2 to the basepiece. This is because the submodule 2 will be held in its respective collar 4 of its basepiece 27 , both by gravity and by virtue of the top of the submodule being held in place in its headpiece 26 and a clip 7 .
  • the shaft 22 is hollow with an internal threaded portion.
  • the shaft 22 internally threadedly engages with a complementary shaft projecting in a perpendicular direction from the cleaning fluid conduit 11 .
  • a membrane filtration apparatus bank 29 includes a plurality of membrane filtration apparatus 25 as described above wherein each headpiece 26 is connected to a filtrate conduit 28 and each basepiece 27 is connected to a cleaning fluid conduit 11 . Additional stiffening elements 30 , as shown in FIG. 11, may also be provided therebetween to aid physical stability of the filtration system. Typically, there are eight membrane filtration apparatuses 25 in each bank 29 and the apparatuses are arranged in an upright position. When employed in a filtration system, the bank 29 is substantially immersed in the feed, where the feed is contained in a tank 31 with an open top.
  • air is used as the filtration submodule cleaning fluid which flows through the cleaning fluid conduit 11 .
  • the cleaning fluid conduit 11 is proximally above the basepieces 27 and lies in a straight line along the length of the bank 29 in between the collars 4 . This allows the cleaning fluid conduit 11 to supply air to the basepieces 27 through a plurality of passageways 10 on the under side of the cleaning fluid conduit 11 . Supplying air to the basepieces 27 through the underside of the cleaning fluid conduit 11 allows controlled release of the cleaning air, ensuring it is evenly distributed along the entire length of the bank 29 .
  • the filtration system includes a membrane filtration apparatus array as shown in FIGS. 11 and 13 having a plurality of apparatus banks 29 wherein each of the filtrate conduits 28 are connected to an array filtrate conduit 32 .
  • the filtration apparatus banks 29 are further adapted for relatively simple disconnection from the membrane filtration apparatus array. When disconnected, the filtration apparatus banks may be removed from the membrane filtration apparatus array by lifting the bank vertically from the array. Similarly, the banks may also be placed individually into an array by lowering the banks vertically into its predetermined position. This allows for less complicated assembly and disassembly of the arrays and convenient access to submodules disposed in or near the centre of the array.
  • a membrane filtration array train as best shown in FIG. 15, includes a plurality of membrane filtration apparatus arrays from FIG. 14 wherein the array filtrate conduits 32 are connected by a train conduit 33 such that the array filtrate conduits 32 are in fluid communication with the train conduits 33 .
  • the tanks 31 are continuously substantially filled with feed which in turn submerges the arrays of filter submodules 2 .
  • Pumps 34 draw the feed through the filter submodules 2 producing filtrate.
  • the filtrate under negative pressure from the pumps 34 , travels through the manifolds 1 , via the filtrate conduits 28 , array filtrate conduits 32 , and train filtrate conduits 33 and on to the pump.
  • the filtrate then leaves the pump and also the filtration system via a filtrate exit conduit 35 .

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Paper (AREA)
US10/045,186 1999-04-20 2001-10-18 Membrane filtration manifold system Abandoned US20020148767A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/718,756 US7264716B2 (en) 1999-04-20 2003-11-20 Membrane filtration manifold system

Applications Claiming Priority (3)

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AUPP9850 1999-04-20
AUPP9850A AUPP985099A0 (en) 1999-04-20 1999-04-20 Membrane filtration manifold system
PCT/AU2000/000352 WO2000062908A1 (en) 1999-04-20 2000-04-20 Membrane filtration manifold system

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2000/000352 Continuation WO2000062908A1 (en) 1999-04-20 2000-04-20 Membrane filtration manifold system

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EP (1) EP1189682B1 (es)
JP (1) JP4533539B2 (es)
KR (1) KR100664619B1 (es)
CN (1) CN1224449C (es)
AT (1) ATE485883T1 (es)
AU (1) AUPP985099A0 (es)
DE (1) DE60045155D1 (es)
ES (1) ES2354409T3 (es)
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EP1189682B1 (en) 2010-10-27
NZ514482A (en) 2003-04-29
JP4533539B2 (ja) 2010-09-01
US7264716B2 (en) 2007-09-04
KR20020026424A (ko) 2002-04-10
ES2354409T3 (es) 2011-03-14
ATE485883T1 (de) 2010-11-15
CN1224449C (zh) 2005-10-26
KR100664619B1 (ko) 2007-01-04
DE60045155D1 (de) 2010-12-09
EP1189682A1 (en) 2002-03-27
US20040238431A1 (en) 2004-12-02
JP2002542013A (ja) 2002-12-10
WO2000062908A1 (en) 2000-10-26
AUPP985099A0 (en) 1999-05-13
CN1347338A (zh) 2002-05-01

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