WO2000009266A1 - Dispositif pour le traitement de l'eau - Google Patents

Dispositif pour le traitement de l'eau Download PDF

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Publication number
WO2000009266A1
WO2000009266A1 PCT/BE1999/000102 BE9900102W WO0009266A1 WO 2000009266 A1 WO2000009266 A1 WO 2000009266A1 BE 9900102 W BE9900102 W BE 9900102W WO 0009266 A1 WO0009266 A1 WO 0009266A1
Authority
WO
WIPO (PCT)
Prior art keywords
conduit
pressing
sealing
holder
elastic means
Prior art date
Application number
PCT/BE1999/000102
Other languages
English (en)
Inventor
Guido Ivo Cesar Maria Van De Moortele
Original Assignee
Padema, Naamloze Vennootschap
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 Padema, Naamloze Vennootschap filed Critical Padema, Naamloze Vennootschap
Publication of WO2000009266A1 publication Critical patent/WO2000009266A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J47/00—Ion-exchange processes in general; Apparatus therefor
    • B01J47/02—Column or bed processes
    • B01J47/022—Column or bed processes characterised by the construction of the column or container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
    • B01J49/90—Regeneration or reactivation of ion-exchangers; Apparatus therefor having devices which prevent back-flow of the ion-exchange mass during regeneration

Definitions

  • This invention relates to a device for water treatment, more particularly a device of the type whereby the water during treatment is brought into contact with a treatment medium, such as an ion exchange resin, whereby this treatment medium is provided with a tank with two liquid- permeable holders between which the treatment medium is held.
  • a treatment medium such as an ion exchange resin
  • the resin particles moreover can not float freely, which results in that the brine uniformly displaces the calcium and magnesium and improves the "chromatographic course" .
  • the pressing of the resin must be performed in such a manner that the resin can expand, shrink respectively. It is well known that the volume of the resin changes depending whether it is exhausted to a major or minor degree.
  • the invention aims at a device which does not show the aforementioned and other disadvantages.
  • the invention relates to a device of the above-mentioned type, with the characteristic that at least one of both holders is movable and that the device is provided with elastic means with which the holders are forced mutually towards each other, in such a manner that the treatment medium is pressed.
  • the treatment medium more particularly the resin
  • a constructively simple pressing structure is obtained.
  • a permanent pressing can be guaranteed.
  • the aforementioned pressing does not have to be large. Above all, it is important to prevent that the resin granules, in particular during the countercurrent, namely, the regeneration, will float completely free and the resin bed becomes "liquid".
  • one holder is mounted at a fixed location, whereas the other holder is movable and is pressed by the elastic means against the mass of resin, or possibly another treatment medium, which is held between the liquid-permeable holders.
  • the elastic means consist of a sealing of an elastic material which is applied between the respective holder and an adjacent constructive part, whereby this sealing is realized in such a manner that it is elastically extended in mounted position and presses the holder onto the resin or such.
  • the elastic means consist of a membrane.
  • the aforementioned elastic means are realized in the form of a sliding membrane.
  • Such sliding membrane has the advantage that the direct distance between the fixation at the holder and the one to the adjacent constructive part may be small, whereas, anyhow, a good stretching is possible.
  • the sliding membrane substantially is cylindrical and is fixed at one extremity at the aforementioned holder, whereas, at its other extremity, it is fixed at the aforementioned constructive part.
  • This constructive part is preferably formed by a central guidance and/or conduit passing through the holder concerned, more particularly the conduit which, as well known, serves as a return conduit.
  • the tensioning of the sliding membrane preferably is performed by means of a pressing part, more particularly a cylindrical pressing part, which is slid between the constructive part concerned and the aforementioned holder .
  • the sliding membrane provides for a sealing between the holder and the aforementioned constructive part, which is realized such that this sealing extends continuously over the entire or almost the entire length of the sliding membrane, and/or at least such that no spaces are formed in which, with a flow in one or the other direction, liquid may come to a standstill which shall only be rinsed away when the flow direction is reversed.
  • this sealing extends continuously over the entire or almost the entire length of the sliding membrane, and/or at least such that no spaces are formed in which, with a flow in one or the other direction, liquid may come to a standstill which shall only be rinsed away when the flow direction is reversed.
  • figure 1 partially in cross-section represents a device according to the invention
  • figure 2 at a larger scale represents the part represented by F2 in figure 1
  • figure 3 at a still larger scale represents the part represented by F3 in figure 2
  • figure 4 represents a cross-section according to line
  • the invention relates to a device 1 for water treatment, of the type whereby the water during treatment is brought into contact with a treatment medium 2, in this case a quantity of resin.
  • the water hereby is directed throught the treatment medium 2, as indicated by arrow A, whereby , due to the contact with the treatment medium 2 , the calcium and the magnesium present in the water are replaced by sodium, whereas the calcium and the magnesium remain at the treatment medium 2.
  • the treatment medium 2 is regenerated regularly by directing a regeneration medium, such as brine, in countercurrent, such as indicated by arrow B, through the treatment medium 2, mostly followed by a a slow rinsing.
  • a regeneration medium such as brine
  • countercurrent such as indicated by arrow B
  • This brine is supplied in a known manner from a not- represented brine barrel , and the product discharged during regeneration is drained by means of a connection to the sewage system or the like.
  • the regeneration is controlled automatically by means of a regulator 3 which is provided with the necessary valves.
  • a regulator 3 which is provided with the necessary valves.
  • the treatment medium 2 is provided in a tank 4 and is held between two liquid-permeable holders 5 and 6 situated one above the other.
  • the lowermost holder 5 hereby is supported on a collar 7, in such a manner that a space 8 is formed thereunder which is free of treatment medium 2 .
  • a conduit 9 standing upright which functions as a return conduit and which at the bottom gives out to the space 8.
  • the conduit 9 communicates with a passage 10 through which the water to be treated is discharged, the brine or such is supplied, respectively.
  • a free space 11 is present which is connected to the regulator 3 by means of one or more passages 12.
  • the particularity of the invention consists in that, as represented in the figures 1 to 4 , at least one of both holders, in this case the uppermost holder 6, is movable and that the device 1 is provided with elastic means , in this case a sliding membrane 13, with which the holders mutually are forced towards each other, more particular- ly, the holder 6 is forced downward, in such a manner that the treatment medium 2 is pressed.
  • the holder 6 is realized in the form of a disk which can be moved up and down around the circuit 9, and substantially consists of a frame 14 in which a liquid- permeable mebrane 15 or such is provided. At the exterior edge, the holder 6 is provided with a sealing 16 made of a relatively soft synthetic material or similar, with which the holder 6 can be shifted alongside the interior edge 17 of the tank 4.
  • the aforementioned sliding membrane 13 is provided between the interior edge of the frame 14 and the conduit 9 and in this manner fulfils a double function, namely, on one hand, the provision of the aforementioned pressing force and, on the other hand, the provision of the sealing around the conduit 9.
  • the sliding membrane 13 is expanded by means of a cylindrical pressing part 18 provided between the conduit 9 and the holder 6.
  • This pressing part 18 is held at its place against the force of the sliding membrane 13, in that it is mounted against the underside of the cover 19 of the tank 4.
  • the pressing part 18 fulfils the function of connection piece between the upper extremity of the conduit 9 and the passage 10.
  • it is composed of a conical part 20 forming a partition between the passage 10 and the space 11, and a cylindrical part 21 which takes place concentrically around a pipe-shaped part 22 forming part of the conduit 9.
  • fixation collar 23 and 24 respectively, of which the fixation collar 23 engages behind the edge 25 of the pipe-shaped part 22, whereas the fixation collar 24 engages behind the interior edge 26 of the holder 6.
  • the sliding membrane 13 In mounted position, the sliding membrane 13 extends around the cylindrical part 21 of the pressing part 18 and preferably provides for a sealing between the adjacent parts.
  • the sliding membrane 13 extends downward between its free extremities , and the closure preferably is realized at the location of the extremities, thus, situated on top. As a result thereof, it is obtained that between these parts , there is no space present into which brine remainders or such from above may penetrate and remain there. As indicated by arrows C in figure 3, the brine obviously can not penetrate between the pipe-shaped part 22 and the cylindrical part 21.
  • the sealing preferably is improved by directing the edges of the sliding membrane 13 at the locations X and Y somewhat towards the inside. Moreover, then a pressure force is realized exclusively locally, whereas the sliding membrane 13 is clamped little or not between X and Y, as a result of which it easily can be stretched.
  • liquid which possibly enters from below between, on one hand, the sliding membrane 13 and, on the other hand, the conduit 9 and/or the holder 6, from below, can drain off downward.
  • the holder 5, together with the pipe-shaped part 22 is mounted in the tank.
  • the treatment medium 2 is brought into the space around the pipe-shaped part 22, after which the holder 6, together with the sliding membrane 13, is mounted.
  • the sliding membrane 13, for example, takes up a position as indicated by dashed line 27 in figure 3.
  • the elasticity of the sliding membrane 13 provides for that a pressing of the treatment medium 2 takes place permanently, even if during the use, the regeneration, respectively, of the device 1, the volume of the treatment medium 2 changes and the holder 6 moves somewhat up or down.
  • the sliding membrane 13 is stretched more or less, it slides around the lower edge of the pressing part 18, as a result of which the latter performs a stretching and sliding movement. It is obvious that the lower edge of the pressing part 18 preferably is rounded.
  • the pressure part 18 must not necessarily be realized as a connection part. Also, this pressing part not necessarily has to come into contact with the cover 19 and can be fixed at its place in another manner.
  • a large sliding membrane which is not situated in the proximity of the interior edge of the frame 14, but is provided along the exterior periphery of the frame 14.
  • a classical spring more particularly a compression spring 30 for pressing the holder 6 onto the treatment medium 2.
  • both of the holders 5-6 might be movable.
  • the lowermost holder 5 does not necessarily have to be realized in the shape of a disk and may consist of any element which prevents the treatment medium 2 from getting into the conduit 9.
  • the sliding membrane 13 will not provide any pressing force for the treatment medium 2, but will exclusively provide for a sealing between the pipe-shaped part 22 and the cylindrical part 21, and possibly between the cylindrical part 21 and the frame 14.
  • the sliding membrane 13, for example can be provided with a collar 31 instead of the aforementioned fixation collar 24, as schematically indicated in figure 3, which collar 31 engages in a recess in the exterior periphery of the cylindrical part 21.
  • the pressing force can be provided by other elastic means.
  • closure by means of such sliding membrane 13 is also advantageous in forms of embodiment whereby no pressing of the treatment medium 2 is performed, as then the advantage still is maintained that between the pressing part 18 functioning as a connection part and the conduit 9 no spaces are formed in which brine remainders can accumulate. It is obvious that the present invention also relates to such forms of embodiment.
  • the present invention is in no way limited to the forms of embodiment described as an example and represented in the figures, on the contrary may such device for water treatment be manufactured in different forms and dimen- sions and can also be applied in other treatment devices than water softeners, whereby the treatment medium not necessarily is a resin.
  • the invention also can be applied in devices where the regeneration takes place with a product other than brine, or whereby even no regeneration at all takes place.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invention concerne un dispositif pour le traitement de l'eau mettant en contact l'eau en cours de traitement avec un milieu de traitement (2), tel qu'une résine. Ce dispositif (1) est pourvu d'un réservoir (4) doté de deux supports (5-6) étanches aux liquides entre lesquels se trouve le milieu de traitement (2). Ce dispositif est caractérisé en ce qu'au moins un des supports (6) est mobile et en ce qu'il est équipé de moyens élastiques qui sollicitent les supports (5-6) l'un vers l'autre de manière que le milieu de traitement (2) soit comprimé.
PCT/BE1999/000102 1998-08-11 1999-08-05 Dispositif pour le traitement de l'eau WO2000009266A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9800600A BE1012118A3 (nl) 1998-08-11 1998-08-11 Inrichting voor het behandelen van water.
BE9800600 1998-08-11

Publications (1)

Publication Number Publication Date
WO2000009266A1 true WO2000009266A1 (fr) 2000-02-24

Family

ID=3891390

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BE1999/000102 WO2000009266A1 (fr) 1998-08-11 1999-08-05 Dispositif pour le traitement de l'eau

Country Status (2)

Country Link
BE (1) BE1012118A3 (fr)
WO (1) WO2000009266A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003049859A1 (fr) * 2001-12-10 2003-06-19 Arianto Darmawan Procede de purification d'un liquide par resine echangeuse d'ions maintenue compacte au moyen d'un materiau elastique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1263699B (de) * 1964-08-20 1968-03-21 Kraftanlagen Ag Behaelter fuer Ionenaustauscher
FR2014641A1 (en) * 1968-07-18 1970-04-17 Hager & Elsaesser Ion exchange filter for counter-flow - regeneration
DE1933745A1 (de) * 1969-07-03 1971-01-14 Steinmueller Gmbh L & C Schichtbett-Gegenstromfilter
FR2527099A1 (fr) * 1982-05-19 1983-11-25 Siebec Filtres Appareil d'echange d'ions

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1263699B (de) * 1964-08-20 1968-03-21 Kraftanlagen Ag Behaelter fuer Ionenaustauscher
FR2014641A1 (en) * 1968-07-18 1970-04-17 Hager & Elsaesser Ion exchange filter for counter-flow - regeneration
DE1933745A1 (de) * 1969-07-03 1971-01-14 Steinmueller Gmbh L & C Schichtbett-Gegenstromfilter
FR2527099A1 (fr) * 1982-05-19 1983-11-25 Siebec Filtres Appareil d'echange d'ions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003049859A1 (fr) * 2001-12-10 2003-06-19 Arianto Darmawan Procede de purification d'un liquide par resine echangeuse d'ions maintenue compacte au moyen d'un materiau elastique
GB2396830A (en) * 2001-12-10 2004-07-07 Arianto Darmawan A method of liquid purification using ion exchange resin being kept in a compacted state by means of elastic material

Also Published As

Publication number Publication date
BE1012118A3 (nl) 2000-05-02

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