WO2004087287A1 - Filtre purificateur de fluides - Google Patents

Filtre purificateur de fluides Download PDF

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Publication number
WO2004087287A1
WO2004087287A1 PCT/EP2004/050404 EP2004050404W WO2004087287A1 WO 2004087287 A1 WO2004087287 A1 WO 2004087287A1 EP 2004050404 W EP2004050404 W EP 2004050404W WO 2004087287 A1 WO2004087287 A1 WO 2004087287A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
water
ceramic
plates
housing
Prior art date
Application number
PCT/EP2004/050404
Other languages
German (de)
English (en)
Inventor
Marcel Max Huder
Original Assignee
Huder, Lucienne
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 Huder, Lucienne filed Critical Huder, Lucienne
Publication of WO2004087287A1 publication Critical patent/WO2004087287A1/fr

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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
    • B01D63/08—Flat membrane modules
    • B01D63/082—Flat membrane modules comprising a stack of flat membranes
    • B01D63/084—Flat membrane modules comprising a stack of flat membranes at least one flow duct intersecting the membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/31—Self-supporting filtering elements
    • B01D29/33—Self-supporting filtering elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/39—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type
    • B01D29/41—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type mounted transversely on the tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
    • B01D29/606—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration by pressure measuring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/70—Regenerating the filter material in the filter by forces created by movement of the filter element
    • B01D29/74—Regenerating the filter material in the filter by forces created by movement of the filter element involving centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/885—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices with internal recirculation through the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/92—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging filtrate
    • B01D29/925—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging filtrate containing liquid displacement elements or cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
    • B01D33/21—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
    • B01D33/21—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft
    • B01D33/23—Construction of discs or component sectors thereof
    • 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
    • B01D63/06—Tubular membrane modules
    • B01D63/062—Tubular membrane modules with membranes on a surface of a support tube
    • 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
    • B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/02—Filtering elements having a conical form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/18—Use of gases
    • B01D2321/185—Aeration

Definitions

  • the invention relates to a filter for cleaning fluids in the
  • Such filters are suitable, for example, for cleaning waste water in one
  • Wastewater treatment plant for cleaning other dirty water as well as for cleaning air, gases, chemicals, milk, etc.
  • a filter for cleaning fluids is known from DE 38 14373 AI.
  • This filter is designed for cooling, lubricating and processing media for machine tools or other production machines and not for water.
  • the filter comprises several ceramic disks separated by spacers, which are lined up on a tube.
  • the tube has openings in the area of each individual ceramic disk for the passage of the filtered fluid.
  • the fluid to be cleaned is led from the outside to the ceramic disks and flows through the ceramic disks and the openings into the pipe, where it is discharged as cleaned fluid.
  • the fluid can be pumped in the opposite direction, so that dirt particles deposited on the ceramic disks are released again.
  • the ceramic discs can be rotated, with brushes scraping the dirt particles from the ceramic discs.
  • a disadvantage of this filter is that the limited size of the openings limits the flow rate of the fluid.
  • a filter that is designed for the purification of water is known from EP 730 486
  • the filter comprises a housing and a conical ceramic filter arranged inside the housing.
  • a brush is provided, which brushes the ceramic filter on the side on which the dirty water is supplied.
  • the invention has for its object to develop a filter which is suitable for cleaning large amounts of fluids, which can be cleaned in a simple manner and which is simple and inexpensive to manufacture.
  • the invention relates to filters for cleaning fluids that can be cleaned by backwashing with compressed air.
  • the fluid to be cleaned is supplied to a side of a filter element designated as a dirt side and from a side clean side designated output space of the filter element away.
  • a displacement body is present in the output space of the filter element, which on the one hand largely fills the output space in order to keep the volume of the output space as small as possible, and on the other hand is designed so that the flow resistance of the filter does not increase or only increases to an insignificant extent due to the displacement body.
  • a first filter is particularly suitable for filtering large quantities of
  • the filter comprises a plurality of filter plates stacked one above the other, each of which has a central opening and an elevation surrounding the opening.
  • the central openings of the filter plates form a through hole, which represents the outlet space of the filter.
  • a base plate and a cover plate limit the bore and thus the exit space below and above.
  • the wastewater flows from the outside through the filter plates and collects in the exit room, from where it flows through a water pipe.
  • the base plate and the cover plate are connected by a rod.
  • the diameter of the rod is smaller than the diameter of the bore, so that there is a continuous air gap between the rod and the filter plates.
  • the diameter of the central openings of the filter plates is decisive for the flow rate that can be achieved, since the diameter determines the size of the surface on the outlet side of the filter plates.
  • the rod represents a displacement body, which significantly reduces the volume of the exit space without increasing the flow resistance for the water.
  • dirt is deposited on the dirt side of the filter element.
  • the filter is therefore cleaned periodically by backtracking the filter with compressed air.
  • the compressed air flows in the opposite direction to the water through the filter element. Because the rod fills a large part of the exit area, only a small volume of water needs to be forced out of the exit area during backwashing.
  • the distance between the filter plates is significantly smaller than the thickness of the filter plates.
  • the volume of such a cavity is thus smaller than the volume of a filter plate.
  • the distance between the filter plates is preferably at least five times smaller than the thickness of the filter plates.
  • Another filter that is suitable for cleaning smaller amounts of water includes a conical ceramic filter that is clamped between two cover plates is.
  • a leonic displacement body which fills the output space to such an extent that only a small gap remains between the ceramic filter and the displacement body.
  • the displacement body does not reduce the flow rate of the water, but it means that only a small volume of water has to be transported out of the exit space during backwashing.
  • This filter can be made in two embodiments. In the first embodiment, the filter is placed in a pool of water or a body of water. The water to be cleaned penetrates from the outside through the ceramic filter into the exit area and is pumped out of the exit area as purified water.
  • the second embodiment additionally comprises a housing and the water to be cleaned is supplied via a water pipe. In the second embodiment, the working direction of the filter can also be reversed, in which case the shape of the housing also takes on the function of the displacement body.
  • Equip circulation device that circulates the dirty water on the dirty side of the filter, so that the deposition of the dirt on the ceramic filter is difficult. In this way, the time between two cleaning phases can be extended.
  • FIG. 1 is a top view of a disc-shaped filter plate
  • Fig. 2 shows the filter plate in cross section along the line A-A of Fig. 1, and
  • FIG. 4 shows in cross section a second exemplary embodiment of a device according to the invention
  • the exemplary embodiments are explained on the basis of the purification of water, but are not limited to water, but can be used for any fluids.
  • the first exemplary embodiment of a filter according to the invention relates in particular to the purification of waste water.
  • the dimensions of the filter are relatively large in order to achieve a large filter area and thus a large flow rate of the water.
  • Several such filters are placed side by side in a sewage basin placed. The filters have to be cleaned again and again. The filter is cleaned with air, with compressed air being pressed through the filter in the opposite direction during the cleaning phases.
  • Filter plate 1 the top of which is designated by reference number 2, the underside of which is designated by reference number 3 and the outer edge of which is indicated by reference number 4.
  • the filter plate 1 has a central opening 5.
  • the top 2 of the filter plate 1 has an elevation 6 surrounding the opening 5 and elevations 7 leading from the opening 5 to the outer edge 4 of the filter plate 1.
  • the elevations 7 run either in the radial direction or at a predetermined angle obliquely to the respective radial direction. Preferably, however, the elevations 7 run as shown in FIG. 1 from inside to outside.
  • the filter plate 1 preferably consists of a support body made of coarse-pored
  • the membrane is a thin, fine-pored layer 1 ', which covers the top 2, the bottom 3 and the outer edge 4 of the filter plate 1.
  • the elevations 6 and 7 also consist of ceramic or of an adhesive or of silicone or of another suitable material, but from air and water impermeable material.
  • the elevations 6 and 7 preferably consist of air and water impermeable ceramic material. In this case, pieces of ceramic material can be placed on the top 2 of the filter plate 1 during the manufacture of the filter plate 1, which connect to the filter plate 1 during the subsequent firing.
  • FIG. 3 shows in cross section a filter according to the invention, the filter element of which consists of a plurality of filter plates 1 stacked one above the other, the central openings 5 (FIG. 1) of the filter plates 1 forming a continuous bore 8.
  • the elevations 6 serve on the one hand as a spacer for the filter plates 1 and on the other hand for sealing against the bore 8.
  • the elevations 7 serve on the one hand to support the filter plates 1 and on the other hand serve as paddle wheels in order to set the filter in rotation during cleaning, as described later.
  • the surface of the elevations 6 and 7 runs parallel to the upper side 2 (FIG. 1) of the filter plate 1.
  • the filter further comprises a bottom plate 9, a cover plate 10 and a rod
  • the rod 11 also serves as a displacement body 12.
  • the diameter of the rod 11 is slightly smaller than that Diameter of the openings 5 of the filter plates 1 or the bore 8, so that a Mein gap 13 of typically about two millimeters remains between the rod 11 and the filter plates 1.
  • the rod 11 has at its lower end a cavity 14 which is open at the bottom and two radially running bores 15 and 16. The holes 15 and 16 communicate with the gap 13 present between the rod 11 and the filter plates 1.
  • the hole 15 is connected to a water pipe 17, through which the filtered and thus cleaned water is discharged.
  • the bore 16 is connected to a compressed air line 18, via which compressed air is pressed into the bore 8 and through the filter plates 1 during the cleaning phases.
  • the bores 15 and 16 can either be arranged directly above the base plate 9 so that they open laterally directly into the gap 13, or they can be arranged at the level of the base plate 9 and communicate with the gap 13 via corresponding recesses in the base plate 9 ,
  • This filter is designed to clean water collected in a sewage basin.
  • the waste water basin is equipped with a holder 19 (also shown in FIG. 3) for the reception of the filter.
  • a large number of brackets are provided in a wastewater basin for the accommodation of one filter each.
  • the filter When installed in the waste water basin, the filter is placed in its holder, the bores 15 and 16 being connected to the water line 17 and the compressed air line 18, respectively.
  • the holder is designed so that the rod 11 can rotate about its longitudinal axis.
  • the holder is further designed so that no waste water can flow out of the waste water basin.
  • the filter plates 1 typically have a diameter of approximately 40 centimeters.
  • the diameter of the opening 5 is about 8 centimeters, the diameter of the rod 11 is about 7.5 cm.
  • the thickness of the filter plate 1 is about two to three centimeters.
  • the distance between the filter plates 1 is typically about one millimeter.
  • the distance between the filter plates 1 is thus several times smaller, in the example by a factor of 20 to 30, than the thickness of a filter plate 1.
  • the diameter of the bores 15 and 16 is typically about two to three centimeters. If several filter plates 1 are stacked to form a filter, this means that the weight of the filter becomes relatively large.
  • the rod 11 therefore has the additional task of supporting the filter during operation and of allowing the filter to rotate during the cleaning phases.
  • the cover plate 10 has a rotatable hook 20. If the filter is used in the wastewater basin, its position is stabilized, for example, by a tensioned rope leading through the hook so that the filter does not tip over.
  • the water line 17 contains a first valve 21, the compressed air line 18 contains a second valve 22 which can be actuated, for example, magnetically or pneumatically.
  • the valves 21 and 22 can also be placed outside the rod 11, ie in the holder 19.
  • the filter works as follows: the valve 21 of the water line 17 is open, the valve 22 of the compressed air line 18 is closed. Waste water in the waste water basin flows over the underside 3, the upper side 2 and the outer edge 4 of the filter plates 1 into the filter plates 1 and reaches the gap 13 between the rod 11 and the filter plates 1 as purified water and from there via the bore 15 in the water line 17.
  • the valve 21 of the water line 17 is first closed and then the valve 22 of the compressed air line 18 is opened.
  • the compressed air now passes through the bore 16 into the gap 13 and flows through the slats 1, whereby on the underside 3, the top 2 and the outer edge 4 of the filter plates 1 deposited dirt is carried away. If the elevations 7 are curved, then they act like paddle wheels, so that the compressed air flowing out of the filter plates 1 sets the entire filter in rotation. This rotation supports the detachment of the dirt from the surface of the filter plates 1.
  • the filter can also be equipped with a motor, which is either placed on top of the filter or placed in the holder 19 and can rotate the rod 11 and thus the entire filter both in the filtering operation and during the cleaning phase.
  • the rotating operation of the filter offers the advantage that the dirt that is deposited on the surface of the filter is already partially detached from the filter in the filtering operation, so that fewer or shorter cleaning phases are necessary.
  • the flow rate of the water is essentially determined by the diameter of the
  • the volume of the amount of water present inside the filter is very small.
  • valve 22 is closed and the valve 21 is opened again, only a little air has to be removed via the water line 17. This significantly shortens the cleaning phase.
  • the two valves 21 and 22 are advantageously placed as close as possible to the bores 15 and 16, respectively.
  • the filter can be manufactured in a simple and inexpensive manner.
  • the filter described is particularly suitable for use in a wastewater basin.
  • the filter can also be placed in a pipe or a shaft. This solution has the advantage that the dirt that accumulates in the pipe or shaft over time can be removed by only draining a small volume of water.
  • the filter can be installed in a pressure vessel, with the dirty water then being fed into the drain vessel via a line.
  • the filter installed in a pressure vessel is particularly suitable for filtering large quantities of any fluid.
  • the filter can also be constructed so that the rod 11 is aligned horizontally, for which purpose the rod 11 is supported at both ends.
  • the filter comprises a conically shaped ceramic filter 30 with an inner wall 31 and an outer wall 32, a first and a second cover plate 33 and 34, a tube 35 and a conically shaped displacement body 36.
  • the outer wall 32 of the ceramic filter 30 is included a layer acting as a filtering membrane.
  • the tube 35 connects the two cover plates 33 and 34, the second cover plate 34 pressing the ceramic filter 30 against the first cover plate 33.
  • the first cover plate 33 and also the tube 35 have, for example, threads that match one another, so that the tube 35 can be screwed into the first cover plate 33.
  • the second cover plate 34 is fastened, for example, by means of a nut 37 screwed onto the pipe 35.
  • the nut 37 is tightened until the ceramic filter 30 is clamped between the two cover plates 33 and 34.
  • the two cover plates 33 and 34 and the ceramic filter 30 thus form a closed exit space 38.
  • the displacement body 36 is arranged in the exit space 38 and fills the exit space 38 to such an extent that only a small gap 39 remains between the displacement body 36 and the ceramic filter 30.
  • the pipe 35 contains at least one bore 40 directed transversely to its longitudinal axis and, optionally, a non-return valve 41 which on the one hand ensures that the cleaned water can flow away in the filtering operation and on the other hand ensures that when the water line 42 is filled with water during the water does not flow away when the filter is started.
  • the bore 40 opens directly above the second cover plate 34 into the outlet space 38 of the filter.
  • the kickback 41 is, for example, a flap that can only be opened in one direction (upwards in the drawing).
  • On the tube 35 is one Water pipe 42 connected to discharge the purified water.
  • the first cover plate 33 contains a bore 43 for the supply of compressed air into the outlet space 38, to which an air line 44 is connected.
  • the bore 43 is either arranged such that it opens directly into the exit space 38, or the displacement body 36 is provided, as shown, with a recess 45, via which the bore 43 communicates with the exit space 38.
  • the water line 42 and the air line 44 each contain a valve 46 and 47, which are mutually open and closed.
  • the water line 42 is connected to a pump 48, which pumps out the filtered water.
  • the air line 44 is connected to a compressed air source 49, which supplies compressed air for cleaning the ceramic filter 30 during the cleaning phase of the filter.
  • the valves 46 and 47, the pump 48 and the compressed air source 49 are controlled by a control module 50.
  • the displacement body 36 is designed in such a way that it largely fills the exit space 38, so that only the gap 39 and a small cavity remain in the region of the bore 40.
  • the pipe 35 is closed in the region of the second cover plate 34 so that no dirty water gets into the pipe 35.
  • the filter In operation, the filter is placed in a water basin or a body of water, so that the dirty water to be cleaned is in direct contact with the outer wall 32 of the ceramic filter 30.
  • valve 46 in water line 42 In filtration mode, valve 46 in water line 42 is open, valve 47 in air line 44 is closed.
  • the pump 48 is switched on. As a result of the suction generated by the pump 48, dirty water penetrates into the outer wall 32 of the ceramic filter 30 and is carried away as filtered water through the water line 42.
  • the dirt that remains on the membrane on the outer wall 32 of the ceramic filter 30 clogs the pores of the membrane more and more.
  • the control module 50 therefore carries out a cleaning of the ceramic filter 30 at certain time intervals.
  • the control module 50 closes the valve 46 in the water line 42 and opens the valve 47 in the air line 44 and thus initiates the cleaning phase.
  • the compressed air now flowing into the exit space 38 forces the water present in the exit space 38 through the ceramic filter 30 in the opposite direction.
  • the water flowing back and the subsequent compressed air loosen the dirt deposited on the outer wall 32 of the ceramic filter 30 and swirl it back into the dirty water.
  • the control module 50 closes the valve 47 in the air line 44 again and then opens the valve 46 in the water line 42.
  • the cleaning phase of the filter has now ended and the filtration operation continues.
  • FIG. 5 shows a third embodiment of the invention, in which a
  • the supply lines for the dirty water and the compressed air and the discharge of the cleaned water of this filter can be configured for two different variants, which differ in whether the dirty water of the outer wall 32 or the inner wall
  • FIG. 5 shows the first variant
  • FIG. 6 shows the second variant.
  • the housing 51 has a passage 54 opening into the cavity 52, to which two water pipes 55 and 56 are connected via a T-piece 60, both of which contain a valve 57 and 58, respectively.
  • a differential pressure sensor 59 and the electronic control module 50 are provided for the automatic control of the filter.
  • This filter is preferably operated as a pressure filter, in which the pump 48 is arranged in the water line 55. In filtration mode, valves 46 and 57 are open, valves 47 and 58 are closed.
  • the pump 48 pumps dirty water through the water line 55 into the cavity 52, through the ceramic filter 30, so that it reaches the outlet space 38 as purified water and is carried away by the water line 42.
  • the pump 48 generates a dynamic pressure acting on the outer wall 32 of the ceramic filter 30.
  • the differential pressure sensor 59 measures the pressure drop across the ceramic filter 30. The dirt on the outside wall
  • the control module 50 interrupts the filtration operation and carries out a cleaning phase.
  • the control module 50 stops the pump 48 and closes the valves 46 and 57 and opens the valves 47 and 58.
  • the compressed air supplied through the air line 44 forces the water present in the outlet space 38 through the ceramic filter 30 in the opposite direction. Since the valve 57 is closed and the valve 58 is open, the dirty water is conveyed out of the cavity 52 and discharged via the water line 56. After a predetermined time, the valves 47 and 58 are closed again and the valves 46 and 57 are opened, so that the filtration operation continues again.
  • the pump 48 can be omitted if the dirty water is already supplied under pressure.
  • the water pipe 42 can also be connected to the upper end of the pipe 35 instead of the lower end as shown.
  • the end of the pipe 35 opposite the water pipe 42 is covered with a closure.
  • the dirt remains on the outer wall 32 of the ceramic filter 30. So that the dirt does not deposit on the outer wall 32 and clog the pores of the ceramic filter 30, the dirty water in the cavity 52, ie on the dirty side of the ceramic filter 30, is preferably by means of a circulating device circulated continuously.
  • the circulating device consists of a water line 62 equipped with a pump 61, the ends of which open into the cavity 52 and which are connected such that dirty water constantly flows along the outer wall 32 of the ceramic filter 30.
  • the cover plate 33 has a passage 63 to which one end of the water pipe 62 is connected. The other end of the water pipe 62 is connected to the bushing 54 via a further T-piece 66 or to the water pipe 55 at another location.
  • the dirty water circulated by the pump 61 and flowing through the water line 62 and along the outer wall 32 of the ceramic filter 30 circulates in a closed circuit.
  • the flow causes dirt that has already been deposited to come loose from the outer wall 32 again.
  • the degree of contamination of the dirty water flowing in the circuit increases continuously, but the pressure drop across the ceramic filter 30 increases more slowly than in the case of a filter without recirculation of the dirty water.
  • the filter is cleaned as described above, with the pump 61 preferably being switched off during the cleaning phase.
  • a plurality of passages 63 can also be present in order to introduce the dirty water from the circuit into the cavity 52 in order to ensure that the dirty water flows over the entire outer wall 32 of the ceramic filter 30.
  • Fig. 6 shows the embodiment in which the dirty water the room
  • the shape of the housing 51 also assumes the function of a displacement body.
  • the shape of the housing 51 is adapted to the conical shape of the ceramic filter 30, so that the volume of the cavity 52 is as small as possible. As can be seen from FIG. 6, the shape of the housing 51 is therefore essentially conical.
  • the membrane is preferably on the dirt side of the filter, i.e. in this case it is preferably applied to the inner wall 31 of the ceramic filter 30. In this case, however, the membrane could also be applied to the outer wall of the ceramic filter 30.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invention concerne un filtre purificateur d'eau, l'eau à purifier étant acheminée à un côté d'un élément filtrant (30), considéré comme le côté contaminé, puis extraite sous forme filtrée d'une chambre de sortie (38) de l'élément filtrant, considérée comme le côté propre. De l'air comprimé est introduit dans la chambre de sortie pour permettre le nettoyage du filtre et le volume de cette chambre de sortie est maintenu à un faible niveau au moyen d'un corps d'étranglement (36).
PCT/EP2004/050404 2003-04-03 2004-04-01 Filtre purificateur de fluides WO2004087287A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CH595/03 2003-04-03
CH5952003 2003-04-03
CH20752003 2003-12-05
CH2075/03 2003-12-05
CH468/04 2004-03-18
CH4682004 2004-03-18

Publications (1)

Publication Number Publication Date
WO2004087287A1 true WO2004087287A1 (fr) 2004-10-14

Family

ID=33135396

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/050404 WO2004087287A1 (fr) 2003-04-03 2004-04-01 Filtre purificateur de fluides

Country Status (1)

Country Link
WO (1) WO2004087287A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3278855B1 (fr) 2016-08-05 2020-09-30 Sager + Mack GmbH Installation de filtre
CN113209702A (zh) * 2021-06-09 2021-08-06 北京市城远市政工程有限责任公司 市政污水净化系统施工工艺

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1906418A (en) * 1928-07-20 1933-05-02 Sf Bowser & Co Inc Filtering apparatus
FR1137367A (fr) * 1955-06-22 1957-05-28 Appareil de filtration utilisable notamment pour clarifier les liquides de teinturerie ou tout autre liquide
DE1203044B (de) * 1961-05-06 1965-10-14 Daimler Benz Ag Vorrichtung zum Reinigen des Schmieroeles fuer Hilfsaggregate von Brennkraftmaschinen
DE1917306A1 (de) * 1968-04-09 1970-01-29 Maizena Werke Gmbh Deutsche Kerzenfilter,insbesondere zur Filtration von Zuckersaeften
US4048067A (en) * 1975-06-12 1977-09-13 Phillips Petroleum Company Filtering process and apparatus
DE3102670A1 (de) * 1980-01-28 1981-12-17 J.R. Schneider Co. Inc., 94925 Corte Madera, Calif. Filteranordnung und verfahren zur filtrierung
EP0209348A2 (fr) * 1985-07-17 1987-01-21 Nihon Schumacher K.K. Elément filtrant pour appareil de filtration
DE3917517A1 (de) * 1989-05-30 1990-12-13 Agfa Gevaert Ag Filterelement

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1906418A (en) * 1928-07-20 1933-05-02 Sf Bowser & Co Inc Filtering apparatus
FR1137367A (fr) * 1955-06-22 1957-05-28 Appareil de filtration utilisable notamment pour clarifier les liquides de teinturerie ou tout autre liquide
DE1203044B (de) * 1961-05-06 1965-10-14 Daimler Benz Ag Vorrichtung zum Reinigen des Schmieroeles fuer Hilfsaggregate von Brennkraftmaschinen
DE1917306A1 (de) * 1968-04-09 1970-01-29 Maizena Werke Gmbh Deutsche Kerzenfilter,insbesondere zur Filtration von Zuckersaeften
US4048067A (en) * 1975-06-12 1977-09-13 Phillips Petroleum Company Filtering process and apparatus
DE3102670A1 (de) * 1980-01-28 1981-12-17 J.R. Schneider Co. Inc., 94925 Corte Madera, Calif. Filteranordnung und verfahren zur filtrierung
EP0209348A2 (fr) * 1985-07-17 1987-01-21 Nihon Schumacher K.K. Elément filtrant pour appareil de filtration
DE3917517A1 (de) * 1989-05-30 1990-12-13 Agfa Gevaert Ag Filterelement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3278855B1 (fr) 2016-08-05 2020-09-30 Sager + Mack GmbH Installation de filtre
CN113209702A (zh) * 2021-06-09 2021-08-06 北京市城远市政工程有限责任公司 市政污水净化系统施工工艺
CN113209702B (zh) * 2021-06-09 2022-07-12 北京市城远市政工程有限责任公司 市政污水处理装置

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