WO2017149557A1 - Dispositif de filtre sous vide et installation de traitement d'eaux usées l'utilisant - Google Patents

Dispositif de filtre sous vide et installation de traitement d'eaux usées l'utilisant Download PDF

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Publication number
WO2017149557A1
WO2017149557A1 PCT/IT2017/000042 IT2017000042W WO2017149557A1 WO 2017149557 A1 WO2017149557 A1 WO 2017149557A1 IT 2017000042 W IT2017000042 W IT 2017000042W WO 2017149557 A1 WO2017149557 A1 WO 2017149557A1
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WIPO (PCT)
Prior art keywords
pulleys
filter
load bearing
tank
bearing structure
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Ceased
Application number
PCT/IT2017/000042
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English (en)
Inventor
Camine ELIA
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Individual
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Individual
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Classifications

    • 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
    • B01D33/04—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering
    • 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
    • B01D33/044—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are pervious for filtering
    • B01D33/048—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are pervious for filtering with endless filtering bands
    • 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
    • B01D33/056—Construction of filtering bands or supporting belts, e.g. devices for centering, mounting or sealing the filtering bands or the supporting belts
    • 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
    • B01D33/333—Filters with filtering elements which move during the filtering operation with individual filtering elements moving along a closed path
    • 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
    • B01D33/35—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition
    • B01D33/41—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in series connection
    • 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
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
    • B01D33/463—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element nozzles
    • 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
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D33/50—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles

Definitions

  • the present invention relates to a vacuum filter device, intended to be used, in particular, in wastewater treatment. Furthermore, it relates to a wastewater treatment plant which employs such a vacuum filter device, in which the latter is mounted in an oxidation tank in order to extract clarified water from the wastewater preferably aerated in order to increase the concentration of microorganisms inside the tank with the effect of accelerating organic matter digestion.
  • US 5,300,221 A describes a filter device in the form of a continuous conveyor which is removably mounted within a tank fed from an inlet duct with a liquid to be filtered and provided with an outlet duct.
  • the filter device which is transversely partially immersed in the tank, has a load bearing structure having opposed walls with upper and lower rollers.
  • a belt filter that runs between the upper and lower rollers carries upward suspended solid matter, which is discharged on a transverse discharge conveyor.
  • the filter device is mounted to supports at the bottom of the tank, from which the filter device can be removed to be washed. Seals are provided between the sides of the filter device and the side walls of the tank in order to prevent passage of liquid.
  • a plurality of filter devices may be provided in the tank, each one being associated to its own discharge conveyor for removing the material separated from the liquid. Clarified liquid flows out of the tank downstream of the filter devices without the previously removed material.
  • the filter device has a screening function which stops and extracts coarse material in suspension in the liquid, while the smallest particles are released again into the liquid when the belt filter is again immersed in the liquid when rotating between the upper and lower rollers. It is clear that the filter device does not allow a liquid with a high level of purification to be obtained downstream.
  • WO 2014/197468 A2 describes a continuous belt screen assembly placed partially immersed in a channel so that a liquid that skims the inner walls of the continuous belt, passes through it. The continuous belt is moved by a pair of drive links which run parallel in the vicinity of the walls of the channel. In the inner side the continuous belt has lifters that lift debris in suspension in the liquid flow.
  • the continuous belt is moved by a geared motor placed at the top of the belt screen assembly in which there is provided a chute that receives and removes the debris lifted by the lifters. It should be obvious that the belt screen assembly according to WO 2014/197468 A2 serves only to remove the debris and not to purify the liquid to be treated.
  • FR 2575397 Al discloses a continuous belt filter movable in vertical direction and partially immersed in a tank in the direction of a liquid flow.
  • the belt which is wave shaped in transverse direction for collecting debris, is closed on one side and, on the other side, it communicates with the outside of the tank.
  • the belt lifts upwards the material contained in the liquid in suspension in the tank which is removed by means of a chute.
  • FR 2575397 Al also gets a removal of the debris in suspension and a filtrate dependent on the porosity of the belt used.
  • the belt filter can be placed only at the outlet of the tank. Therefore, the number of belt filters employable in the tank is equal to one. In other words, more than one movable filter cannot be installed in the tank.
  • the flow rate of filtered liquid is not adjustable because it flows out freely from a wall of the tank through the outlet indicated above.
  • the filter consists of filter panels mounted to respective frames joined together in correspondence of a pair of sliding rollers on respective tracks fixed inside a guide provided at the outlet. It is understood that the filter is designed for a fine screening but not for a micro screening, also because it is not possible to provide a hydraulic seal between the tank and the compartment inside the continuous belt filter: the liquid to be filtered, together with the impurities in suspension, easily passes inside the guide between a sliding roller and the other.
  • US 2004/0262242 Al describes a conveyor belt for an overflow weir for sewerage system.
  • US 4,186,091 A and EP 0728512 A2 describe particular forms of screens.
  • An object of the present invention is to create a filter device which has a simple and economic structure of vacuum filtration.
  • one object of the invention is to provide a belt filter that, by means of its lateral ends, creates a hydraulic seal with the side walls of the filter device, an internal compartment being formed as delimited by the belt filter and by the side walls of the device filter and adapted to contain the clarified liquid, in a manner that liquid still to be filtered is introduced in the compartment of the clarified liquid when the clarified liquid is extracted from the internal compartment.
  • Another object of the invention is to provide a filter device with a belt filter having a desired porosity.
  • a particular object of the invention is to provide filter devices for wastewater treatment that are installed in an oxidation tank of a wastewater treatment plant in the desired number, with the function of extracting clarified water.
  • Still another object of the invention is to provide self-supporting filter devices that can be installed anywhere in an oxidation tank of a wastewater treatment plant.
  • one object of the invention is to provide a wastewater purification plant which employs the filter device in order to avoid a step of secondary sedimentation and recirculation of sludge.
  • a further object of the invention is to provide a filter device in which the quantity of water output from the filter device can be adjusted as desired.
  • an object of the present invention is to provide a filter device, which, when placed in an oxidation tank, produces clarified water that can be delivered directly to the filtration instead of a secondary sedimentation with subsequent return to the oxidation tank.
  • a vacuum filter device partially immersed, when used, in a tank for thickening and filtering a liquid, comprising:
  • a belt filter including a membrane holding flexible structure engaged to move together with the upper pulleys and lower pulleys, membrane holding flexible frame on which at least one filter membrane is mounted;
  • a geared motor mounted to a wall of the load bearing structure and connected to the drive shaft;
  • a sealing arrangement of the membrane holding flexible structure and the pulleys with the facing faces of opposite walls of the load bearing structure is made for creating between the at least one filter membrane and the opposite walls of the load bearing structure a compartment for only filtered liquid that has passed through the at least one filter membrane from the tank; and the clarified liquid compartment communicates with the exterior of the tank by means of a clarified liquid pipe connected to an outlet opening formed in at least one of the opposite walls at a height lower than that of the free surface of the liquid in the tank.
  • the present invention has also the task of providing a wastewater treatment plant, comprising a pre-treatment section, such as for screening, desanding, and deoiling, a primary sedimentation section, a pre-denitrification-oxidation section, a filtration section and a disinfection section, in which the pre-denitrification-oxidation section comprises a tank inside which a vacuum filter device is installed according to any one of the preceding claims.
  • a pre-treatment section such as for screening, desanding, and deoiling
  • a primary sedimentation section such as for screening, desanding, and deoiling
  • a pre-denitrification-oxidation section such as for screening, desanding, and deoiling
  • a primary sedimentation section such as for screening, desanding, and deoiling
  • a pre-denitrification-oxidation section such as for screening, desanding, and deoiling
  • a primary sedimentation section such as for screening, desanding, and deoiling
  • the filtering capacity of the device according to the invention allows to eliminate a secondary sedimentation section and a sludge recirculation that are normally provided in a wastewater treatment plant.
  • the clarified liquid output from the tank is so depurated that it must not return to the pre-denitrification- oxidation section, but it may be delivered directly to the section of filtration and disinfection.
  • FIG. 1 is a perspective view of a first embodiment of the vacuum filter device according to the invention inserted in a tank;
  • FIG. 2 is an enlarged three quarter perspective view from above of the device seen from the opposite side to that in Figure 1 ;
  • Figure 3 is a longitudinally sectioned perspective view of the device in Figure 1 ;
  • FIG. 4 is an exploded perspective view of a flexible structure and a framed membrane of the belt filter of the device in Figure 1 ;
  • FIG. 5 is a further enlarged perspective view of a bottom portion of the device in Figure 1 ;
  • FIG. 6 is a perspective view of the device in Figure 1 as seen from the opposite side;
  • FIG. 7 is a greatly enlarged detail of the bottom part of the device shown in Figure 6;
  • Figure 8 is a perspective view similar to that in Figure 5 but devoid of pulleys and flexible structure
  • FIG. 9 is a perspective view similar to that in Figure 3 but of a second embodiment of the vacuum filter device according to the invention.
  • FIG. 10 is an enlarged perspective view of a pulley of the device in Figure 9;
  • FIG. 1 1 is an enlarged front view of a detail in Figure 9;
  • FIG. 12 is a perspective view of the second embodiment of the vacuum filter device according to the invention inserted in an oxidation tank;
  • FIG. 13 is a flowchart of a wastewater purification plant employing the device according to the present invention.
  • Figures 1 and 2 are a perspective view of a first embodiment of a vacuum filter device 1 inserted in a tank V and, respectively, an enlarged three quarter perspective view from above of the filter device 1 as seen from the opposite side to that in figure 1.
  • the tank V is filled with liquid up to a free surface level indicated as PLV.
  • the vacuum filter device 1 simply called hereinafter device 1 is partially immersed, when used, in the tank V in order to thicken and filter the liquid.
  • the device 1 comprises a vertically extended load bearing structure 2 having opposite walls 3, 4 which have facing faces 30, 40, and opposite faces 31, 41.
  • Figure 3 is a longitudinally cross-sectioned perspective view of the device in Figure 1.
  • a base connected to the side walls 3 and 4 is indicated as 5, and a top member as 6, there are two upper pulleys 7 mounted to a drive shaft 16, and two lower pulleys 8 mounted to a driven shaft 24.
  • the drive shaft 16 is mounted at an adjustable height, together with its geared motor 15, in the load bearing structure 2.
  • a belt filter 9, which is formed by a membrane holding flexible structure 10 and a plurality of filter panels 11, moves periodically on the upper pulleys 7 and lower pulleys 8.
  • Each filter panel 1 1 is constituted by a membrane 12 and a perimeter frame 29, as best shown in figure 4, which is an exploded perspective view of the flexible structure 10 and a filter panel 11 of the belt device in Figures 1 and 2.
  • the flexible frame 29 of the filter panel 11 is preferably made of a composite material, and the membrane 12 is made of plastic, generally polyester, or steel.
  • the porosity of the membrane can be chosen as desired depending on the filtrate to be obtained. For example, if they are membranes for microfiltration, the size of their pores is comprised between 0.1 and 10 ⁇ .
  • the flexible structure 10 is formed by two end strips 13 and by a plurality of thrust spacer elements 14 fixed in parallel between the two strip ends 13. These are the end strips 13 which engage frictionally the upper pulleys 7 and lower pulleys 8, and on the end strips 13 and on the thrust spacer elements 14 the plurality of filter panels 11 is fixed, by their respective flexible frames 29. Both the flexible structure 10 and the flexible frames 29 are made of suitable material. Each flexible frame 29 is joined to the flexible structure 10 with suitable attaching means such as bolts, but also possibly by welding and sticking depending on the materials used and the type of filtration. As above said, the membranes 12 are selected with the desired porosity for the destination of the device 1.
  • the belt filter 9 that is formed by the flexible structure 10 and the membranes 12; the belt filter 9, as will be seen below, is periodically moved by means of the upper pulleys 7 and lower pulleys 8 in order to be cleaned.
  • the displacement of the belt filter 9 is performed by means of the geared motor 15 that is mounted to the outer face 31 of the wall 3 of the load bearing structure 2 and connected to the drive shaft 16.
  • the geared motor 15 is positioned in adjustable manner on the wall 3 of the load bearing structure 2 by means of guides 51 on the one hand, while on the other end there is provided a tensioning assembly 38 mounted to guides 52 (Fig. 6).
  • a splashback 28 is shown full of side walls.
  • the electric washing pump 17 of the membranes 12 is connected to a suction pipe 18 passing through the wall 4 of the load bearing structure 2 and sucking in the compartment 23 of the clarified liquid below its free surface PLF.
  • the free surface PLF of the clarified liquid is lower than free surface PLV of the liquid in the tank V.
  • the electric washing pump 17 has a delivery pipe 19 connected to a series of pipes 20 provided with nozzles 21 for spraying washing water on the membranes 12 that are located above the free surface PLV of the liquid in the tank V ( Figure 3).
  • the pipes 20 are made so that jets of washing water through the nozzles 21 are directed from the inside of the compartment 23 to the outside so as to clean the membranes but also tangentially to the membranes 12 externally of the compartment 23.
  • a sealing arrangement of the belt filter 9 is performed by creating an engagement between the flexible membrane holding structure 10 and four elongated U-shaped gaskets 22 that extend mirror-symmetrically on the facing faces 30, 40 of the opposite walls 3, 4 of the load bearing structure 2. This is shown in particular in Figure 5, which is a further enlarged perspective view of a bottom portion of the device in Figure 1.
  • Figures 6 and 7 are a perspective view of the device in Figure 1 , as seen from the opposite side, and a very enlarged detail of a bottom part of the device shown in Figure 6.
  • the end strips 13 of the flexible structure 10 Inserted in the elongated U-shaped gaskets 22 or 22a, 22b are the end strips 13 of the flexible structure 10 in parallel vertical tracts tangent to the upper pulleys 7 and lower pulleys 8.
  • a compartment 23 created between the plurality of filter panels 11 and the opposite walls 3, 4 of the load bearing structure 2 is a compartment 23 only for the clarified liquid which passed through the membranes 12 from the tank V, in which the device 1 is immersed.
  • These membranes 12 are mainly shown in Figure 3 and in the corresponding partial enlargement of Figure 5, which is a further enlarged perspective view of a bottom part of the device in Figure 1.
  • the filter membrane may be in a single piece and not divided into filter panels 11 shown in the figures.
  • the lower pulley 8 and the other facing lower pulley are mounted to the driven shaft 24.
  • the pulleys are provided with a circumferential gasket 25 in abutment with the inner face 30, 40 of the walls 3, 4.
  • a coil spring 26 pushes the pulleys 8 against the walls 3, 4.
  • a sealing arrangement is created by means of:
  • the pairs of elongated gaskets 22a, 22b have inferiorly end profiles 22c and 22d, respectively.
  • the end profile 22c is tapered downwardly to clean up the end strip 13, while the belt filter 9 is periodically moved for washing the membranes 12;
  • the end profile 22d of the gasket 22b is concave to fit to the convexity of the pulley 8 which rotates inferiorly.
  • Figure 8 is a perspective view similar to that of Figure 5 but devoid of pulleys and flexible structure.
  • the compartment 23 of the clarified liquid communicates with the liquid in the tank V only through the membranes 12.
  • the same compartment communicates with the outside of the tank V by means of a pipe 27 of the clarified liquid (figure 1) connected to an outlet opening 37 (figure 6) formed in the wall 4 at a height lower than that of the free surface PLV of the liquid in the tank V.
  • the liquid to be clarified in the tank V passes through the belt filter 9 in the direction of an arrow E, and the clarified liquid exits the compartment 23 in the device 1 through the pipe 27 in an arrow U direction for its subsequent treatment ( Figure 1).
  • the belt filter 9 is moved in the direction of an arrow F ( Figures 1 and 3) and the membranes that have worked are subjected to washing with the jet of clarified liquid exiting the nozzles 21 delivered through the pipes 19 and 20 by the electric pump 17.
  • the direction of the jets is outlined in Figure 3.
  • the tensioning assembly 38 of the membrane holding flexible structure 10 acts on the drive shaft 16 carrying the upper pulleys 7. This tensioning assembly 38 is not described in detail.
  • FIG. 9 is a perspective view of a second embodiment of a vacuum filter device, and Figures 10 and 1 1 that show enlarged details of Figure 9.
  • the figures contain reference numerals equal to those used in the previous figures to designate same or similar parts.
  • the differences consist in the provision of a modulating valve 32 on the pipe 27 of the clarified liquid.
  • the modulating valve may be of a type different from that shown.
  • a pair of aerators 33 arranged in a position tangential to the vertical tracts of the belt filter 9 is a pair of aerators 33, preferably tubular diffusers.
  • the aerators 33 are connected to a compressed air supply (not shown), and emit bubbles B useful to hit the material, that, standing on the membranes 12, would reduce the filtering capacity thereof.
  • the end strips 13 of the flexible structure 10 holding the panels 1 1 are provided with holes 34, and provided in the upper pulleys 7 and lower pulleys 8 are pins 35, such as those shown in Figure 10, to engage the holes 34 formed on the end strips 13. Thanks to the presence of the holes 34 and of the pins 35 in mutual engagement, a slip of the flexible structure 10 with respect to the upper pulleys 7 and the lower pulleys 8, and a lack of synchronism in the advancement of the end strips 13 are prevented. This lack of synchronism could lead to a breakage of the belt filter 9. It should be evident that pins 35 can be only in the upper pulleys 7, which are the driving ones.
  • FIG 12 is a perspective view of a second embodiment of a vacuum filter device inserted into an oxidation tank VO.
  • the oxidation tank VO has disc diffusers 36 connected by pipes 39 to compressed air suppliers, not shown.
  • the disc diffusers 36 serve to achieve optimum yields of oxygen transfer and avoid sedimentation phenomena in the oxidation tank VO.
  • the oxidation tank VO as the one shown in Figure 12 can be employed in a wastewater treatment plant as depicted in the flowchart in Figure 13.
  • the wastewater treatment plant comprises a slurry incoming section AL, a pre-treatment section P, such as for screening, desanding and deoiling, a primary sedimentation section SP, a pre-denitrification-oxidation section PDO, a filtration section F and a disinfection section D.
  • the pre- denitrification-oxidation section PDO comprises the oxidation tank VO, installed inside which is a vacuum filter device 100 according to the invention.
  • the plant does not require at the exit from the oxidation tank VO a secondary sedimentation section with recirculation of the sludge in the tank of oxidation.
  • the clarified liquid AC exiting the oxidation tank VO has the same characteristics of the one that would exit the secondary sedimentation section, and it is sent directly to the filtration section F.
  • the sludge remains in the oxidation tank VO and, once established their concentration to be maintained therein, the quantity in excess is removed directly from the same oxidation tank VO.
  • the microorganisms inside the secondary sedimentation tank are under oxygen deficiency
  • a secondary sedimentation tank occupies a considerable part of the surface available for the purification plant.
  • the vacuum filter device has the advantage of being installed directly in the oxidation tank and allows, in a wastewater purification plant, the elimination of the secondary sedimentation tank, with a consequent increase in the concentration of microorganisms in the oxidation tank, the increase of the purification capacity, almost doubled, as compared with a modest increase in costs, optimal oxidation conditions of the mixture and the surface saving of the plant.

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

Abstract

L'invention concerne un dispositif de filtre sous-vide (1) qui a une structure de support de charge (2) ayant des parois verticales (3, 4), au moins deux poulies d'entraînement supérieures (7) et au moins deux poulies entraînées inférieures (8), un filtre à bande presseuse (9) en prise pour se déplacer conjointement avec les poulies supérieures (7) et les poulies inférieures (8), une structure flexible (10) sur laquelle des panneaux de filtre (11) sont montés, un moteur à engrenages (15) pour les poulies supérieures (7), et une pompe électrique (17) pour des membranes de lavage. Entre le filtre à bande presseuse (9) et les parois opposées (3, 4) de la structure de support de charge (2) se trouve un compartiment (23) destiné uniquement à un liquide clarifié communiquant avec l'extérieur du réservoir (V) au moyen d'un tuyau (27) relié à une ouverture de sortie (37) formée dans l'une des parois opposées (3, 4) à une hauteur inférieure à celle de la surface libre (PLV) du liquide dans le réservoir (V).
PCT/IT2017/000042 2016-03-04 2017-03-02 Dispositif de filtre sous vide et installation de traitement d'eaux usées l'utilisant Ceased WO2017149557A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102016000022800 2016-03-04
ITUA2016A001352A ITUA20161352A1 (it) 2016-03-04 2016-03-04 Dispositivo filtrante a depressione

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WO2017149557A1 true WO2017149557A1 (fr) 2017-09-08

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107737477A (zh) * 2017-09-28 2018-02-27 广东核电合营有限公司 一种旋转滤网的控制方法、系统、终端设备和存储介质
CN110052079A (zh) * 2019-03-13 2019-07-26 新疆水利水电科学研究院 气动清洗履带式筛网过滤装置
CN111569551A (zh) * 2020-06-24 2020-08-25 郑州师范学院 电缆隧道用自洁不停止过滤的进风过滤机构及其除污方法
EP3744900A1 (fr) * 2019-05-30 2020-12-02 Aqseptence Group Pty Ltd. Réducteur de débit pour un ensemble tamis à bande continue

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114082231B (zh) * 2021-12-25 2024-07-16 深圳鼎阳自动化科技有限公司 一种智能除胶渣过滤系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186091A (en) * 1978-07-27 1980-01-29 Fmc Corporation Water intake screen installation and method of straining water
FR2575397A1 (fr) * 1984-12-28 1986-07-04 Jackson Philip Filtre a tablier filtrant mobile ferme en boucle sur lui-meme
US5300221A (en) * 1989-12-08 1994-04-05 Oystein Austevoll Filter arrangement
EP0728512A2 (fr) * 1995-02-21 1996-08-28 JONES & ATTWOOD LIMITED Grille
US20040262242A1 (en) * 2003-03-06 2004-12-30 Middleton David Grant Screening apparatus
WO2014197468A2 (fr) * 2013-06-03 2014-12-11 Bilfinger Water Technologies, Inc. Tamis à bande continue

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186091A (en) * 1978-07-27 1980-01-29 Fmc Corporation Water intake screen installation and method of straining water
FR2575397A1 (fr) * 1984-12-28 1986-07-04 Jackson Philip Filtre a tablier filtrant mobile ferme en boucle sur lui-meme
US5300221A (en) * 1989-12-08 1994-04-05 Oystein Austevoll Filter arrangement
EP0728512A2 (fr) * 1995-02-21 1996-08-28 JONES & ATTWOOD LIMITED Grille
US20040262242A1 (en) * 2003-03-06 2004-12-30 Middleton David Grant Screening apparatus
WO2014197468A2 (fr) * 2013-06-03 2014-12-11 Bilfinger Water Technologies, Inc. Tamis à bande continue

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107737477A (zh) * 2017-09-28 2018-02-27 广东核电合营有限公司 一种旋转滤网的控制方法、系统、终端设备和存储介质
CN110052079A (zh) * 2019-03-13 2019-07-26 新疆水利水电科学研究院 气动清洗履带式筛网过滤装置
EP3744900A1 (fr) * 2019-05-30 2020-12-02 Aqseptence Group Pty Ltd. Réducteur de débit pour un ensemble tamis à bande continue
US11673081B2 (en) * 2019-05-30 2023-06-13 Aqseptence Group Pty Ltd. Flow restrictor for a continuous belt screen assembly
JP7597524B2 (ja) 2019-05-30 2024-12-10 アクセプタンス グループ ピーティーワイ リミテッド 連続ベルトスクリーン組付体のための流れ制限装置
AU2020203470B2 (en) * 2019-05-30 2026-04-09 Aqseptence Group Pty Ltd Flow restrictor for a continuous belt screen assembly
CN111569551A (zh) * 2020-06-24 2020-08-25 郑州师范学院 电缆隧道用自洁不停止过滤的进风过滤机构及其除污方法
CN111569551B (zh) * 2020-06-24 2022-08-05 郑州师范学院 电缆隧道用自洁不停止过滤的进风过滤机构及其除污方法

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