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WO1995001216A1 - Appareil separant les solides des liquides - Google Patents

Appareil separant les solides des liquides Download PDF

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Publication number
WO1995001216A1
WO1995001216A1 PCT/CA1994/000327 CA9400327W WO9501216A1 WO 1995001216 A1 WO1995001216 A1 WO 1995001216A1 CA 9400327 W CA9400327 W CA 9400327W WO 9501216 A1 WO9501216 A1 WO 9501216A1
Authority
WO
WIPO (PCT)
Prior art keywords
screen
auger
filter
liquid
solid material
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.)
Ceased
Application number
PCT/CA1994/000327
Other languages
English (en)
Inventor
Gunther Abel
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AU69925/94A priority Critical patent/AU6992594A/en
Priority to EP94918707A priority patent/EP0705133A1/fr
Publication of WO1995001216A1 publication Critical patent/WO1995001216A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/28—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed moving during the filtration
    • B01D24/32—Rotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0003—Making of sedimentation devices, structural details thereof, e.g. prefabricated parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0012—Settling tanks making use of filters, e.g. by floating layers of particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0018—Separation of suspended solid particles from liquids by sedimentation provided with a pump mounted in or on a settling tank
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0042—Baffles or guide plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0066—Settling tanks provided with contact surfaces, e.g. baffles, particles with a meandering flow pattern of liquid or solid particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/245—Discharge mechanisms for the sediments
    • B01D21/2461—Positive-displacement pumps; Screw feeders; Trough conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46—Regenerating the filtering material in the filter
    • B01D24/4631—Counter-current flushing, e.g. by air
    • B01D24/4636—Counter-current flushing, e.g. by air with backwash shoes; with 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
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/11—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
    • 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
    • B01D33/25—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow frames axially 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
    • B01D33/35—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
    • B01D33/42—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in series connection concentrically or coaxially
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/28—Position of the filtering element
    • B01D2201/282—Filtering elements with a horizontal rotation or symmetry axis

Definitions

  • the present invention relates to apparatus for separating solids and liquids and is useful, for example, but not exclusively, for the treatment of waste water, industrial effluents and mixtures of liquid and vegetable matter.
  • the cylindrical screen is formed by a plurality of co-axial circular bars or rings, which are spaced apart in the axial direction of the screen, and which extend around, and are spaced radially outwardly from an auger, which is co-axial with the screen.
  • the auger is arranged with its axis upwardly inclined, and with the cylindrical screen at the lower end of the auger, so that a mixture of the solids and liquids can flow into a lower portion of the interior of the screen through a lowermost end of the screen.
  • the liquid can then drain outwardly of the screen, between the bars, while the solid material is retained in the interior of the screen. This retained solid material is then deposited into the auger, through an opening in the top of the auger, by means of a rake rotating around the interior of the cylindrical screen.
  • apparatus for separating liquid and solid material comprising an auger having an auger screw and a tubular structure extending around the auger screw, the tubular structure having an opening in the top thereof to allow the solid material to be deposited through the opening into the auger screw.
  • a screen extends around the auger and is spaced radially outwardly from the tubular structure to allow a mixture of the solid material and the liquid to be introduced between the tubular structure and the screen structure, whereby the liquid can flow outwardly through the screen while at least a portion of the solid material is retained on the inner side of the screen structure.
  • a motor is provided for rotating the screen about the auger to allow the thus-retained solid material to fall through the opening into the auger for removal by the auger, and a filter extends around the screen for filtering the liquid which drains through the screen structure.
  • the filter has a diameter substantially greater than that of the screen, thus providing a relatively large filter area in a relatively compact floor space.
  • the radial dimension of the filter may be as large as required, while the screen remains relatively thin and can be readily backwashed to remove solids form the screen.
  • Sprays may be provided, between the screen and the filter structure, and at the exterior of the filter structure, for cleaning the screen and the filter structure, which in the preferred embodiment of the invention are fixed relative to one another and rotatable about the axis of the auger.
  • Figure 2 shows a broken-away plan view, taken in section along the line 2 - 2 of Figure 1, of part of a sedimentation tank in the apparatus of Figure 1;
  • Figure 3 shows a view in vertical cross-section through a screen and a filter forming parts of the apparatus of Figure 1;
  • Figure 4 shows a portion of the screen of Figure 3 on a enlarged scale
  • Figure 5 shows a view taken in vertical cross-section along the line 5 - 5 of Figure 3;
  • Figure 6 shows a view taken in cross-section along the line 6 - 6 of Figure 3;
  • Figure 7 shows a view in elevation of the screen, taken in the direction of the arrow A of Figure 3;
  • Figure 8 shows a view in side elevation of a part of one the pockets of a screen forming part of the of Figure 3;
  • Figure 9 shows a view in the axial direction of the screen, of the pocket part shown in Figure 8.
  • Figure 10 shows a view in a radially inwardly direction of the pocket part of Figure 8.
  • Figure 11 shows a view on an enlarged scale of part of Figure 9;
  • Figure 12 shows a broken-away view taken in section along the line 12 - 12 of Figure 9;
  • Figure 13 shows a diagrammatic view in axial cross-section through a modified rotor arrangement;
  • Figure 14 shows a view in axial elevation of the rotor arrangement of Figure 13;
  • Figure 15 shows an end view of a modified rotor, with an end plate of the rotor broken away to facilitate illustration
  • Figure 16 shows a view in section along the line 16-16 of Figure 15;
  • Figure 17 shows a broken-away view in section through parts of the rotor of Figures 15 and 16;
  • Figure 18 shows a broken-away view in elevation of parts of the rotor of Figures 15 and 16;
  • Figure 19 shows a spacer plate
  • Figure 20 shows a view in section along the line 17-17 of Figure 18.
  • Figure 21 shows a tie bolt forming part of the rotor of Figures 15 and 16.
  • reference numeral 10 indicates generally an apparatus for separating liquids and solids, which includes a settlement tank indicated generally by reference numeral 12.
  • the settlement tank 12 is provided with vertical baffles 14, which extend transversely of the settlement tank 12 and which are staggered from one another in both the vertical and the horizontal directions so as to provide a vertically and horizontally serpentine path of flow through the settlement tank, as indicated by arrows in Figures 1 and 2.
  • An inlet pipe 16 provided with a valve 18 supplies a mixture of liquids and solids into the interior of the settlement tank 12 at one end of the settlement tank 12, and this mixture then flows along the above-described serpentine path to the opposite end of the settlement tank 12.
  • the baffles 14 are provided, along the bottom edges thereof, with pipes 18 having horizontally directed outlet openings for discharging air into the mixture for aerating and agitating the mixture.
  • the pipes 18 are provided with a supply of compressed air by a compressor 20, which is driven by an electric motor 22 and provided with a compressed air tank 24, which is connected to the pipes 18 through pipes 25.
  • the compressed air tank 24 may be replaced by a ventilator blower.
  • the air flows into the compressor 20 through a first, lower air inlet duct 26, having a first air inlet end 28 in the settlement tank 12 above the level of the mixture of solids and liquids of the settlement tank 12, and through a second, upper air inlet end 30, which is open to the atmosphere.
  • the apparatus 10 includes, at the right-hand end of the settlement tank, as viewed in Figure 1 , a rotatable screen and filter structure indicated generally by reference numeral 32, which has a horizontal axis of rotation extending in the longitudinal direction of the settlement tank 12 and comprises an inner rotor indicated generally by reference numeral 33, and an outer rotor indicated generally by reference numeral 34, which is co-axial with the inner rotor 33.
  • the inner rotor 33 extends around and is coaxial with an auger screw 38, which has a shaft 40 and a tube 42 extending around the auger screw 38 and forming a tubular housing for the auger screw 38.
  • the inner rotor 33 is supported on the auger tube 42 by means of bearings 44 ( Figure 3), which allow the inner rotor 33 to rotate about the auger tube 42.
  • An internally- toothed ring gear 46 secured to one side of the inner rotor 33 meshes with a pinion 48 on the output shaft of a reduction gearing 49 driven by an electric motor 50, so that upon energization of the motor 50 the ring gear 46 is driven by the pinion 48 to cause the rotation of the inner rotor 33 about the auger tube 42.
  • the outer rotor 34 is supported at its right-hand side, as viewed in Figure 1, by means of a bearing 52 on the auger tube 42 and, at its opposite side, on a pair of support rollers 54 (Figure 5) in rolling engagement with the inner periphery of an annular end wall 56.
  • the support rollers 54 are rotatably mounted on a triangular support 55, which is mounted on a pedestal block 56 at one end of the auger tube 42.
  • the pedestal block 56 is in turn supported in a horizontal I-beam 58 ( Figure 1) extending across the width of the settlement tank 12.
  • An electric motor 60 ( Figure 3), through a reduction gearing 62, drives a pinion 64 meshing with a ring gear 66.
  • the ring gear 66 is mounted on a circular side wall 68 at the right-hand side of the outer rotor 34, the bearing 52 being attached to the side wall 68.
  • the inner rotor 32 comprises a screen 70, which in the present embodiment of the invention is made of metal mesh but which may alternatively be made of cotton, polyvinylchloride or another material.
  • the screen 70 is shaped to form radially outwardly extending, radially inwardly open filter chambers or "pockets"
  • the screen 70 is supported on rods 76, opposite ends of which are secured to a first circular side wall 78 carrying the ring gear 46 at one side of the inner rotor 32, and to a second circular side wall 80 at the opposite side of the inner rotor
  • the side wall 78 closes off the spaces 74 between the pockets 72 from the tank 12 and is formed with eight openings 79 ( Figure 5) through which the liquid and solids in the tank 12 can flow into the screen pockets 72 of the inner rotor 33, as described in greater detail below.
  • Figure 6 also shows four spray pipes 84 located between the inner and outer rotors 32 and 33 and provided with spray nozzles 86, which are directed so as to spray radially inwardly onto the mesh 70 and into the radially outwardly open spaces 74.
  • a cylindrically arch-shaped baffle or cover 83 which extends over the top of the inner rotor 32 and which is provided, at opposite sides of the cover 82, with inclined gutters 85.
  • a weir structure 86 ( Figure 3) in the settlement tank 12 has, at a semi-circularly curved upper edge 85 of the weir structure 86, a semi-circular seal 87, which is in sliding, sealing contact with a side face of the ring gear 46 around the lowermost half of the ring gear 46.
  • the weir 86 and the seal 87 ensure that the mixture of solids and liquids flowing through the settlement tank 12, in the direction of the arrows of Figure 1, flows firstly through the openings 79 in the side wall 78 and into the pockets 72 of the inner rotor 32 and then passes through the screen 70 before passing radially outwardly through the outer rotor, as described below.
  • Solid material which is retained within the pockets 72 of the inner rotor 32 at the lower half of the inner rotor 32 is carried upwardly on the screen 70, as the inner rotor is rotated bj the electric motor 50, until it is dislodged by water directed radially inwardly from the spray nozzles 86.
  • the rotation of the upper rotor 33 and the spraying from the spray nozzles 86 are effected intermittently, at time intervals which are selected in accordance with the rate of deposition of the solid material on the screen mesh 70 in the pockets 72.
  • the auger tube 42 has an upwardly directed opening 44, through which the solid material which is dislodged by the sprays from the spray nozzles 86 and by gravity from the pockets 72 is deposited into the auger 38.
  • the shaft 40 of the auger 38 is rotated by an electric motor 90 through a reduction gearing 92.
  • the rotation of the auger screw shaft 40 causes the solid material deposited into the auger 38 to be fed along the auger tube 42 for discharge through an outlet pipe 94 into a container (not shown) or the like.
  • Each of the pockets is formed by a pair of generally L-shaped mesh structures, one of which is indicated generally by reference numeral 120, and is formed of metal mesh material 122, the edges of which are held in a frame 124.
  • the mesh material 122 is supported, between opposite sides of the frame 124, by support wires 126, the ends of which are secured in the frame 124.
  • the outer edges of the mesh structures 120 are connected together by connectors 128, and opposite sides of the frames 124 are slid into engagement with slots in connector strips 130.
  • the inner ends of the frames are slid into contact with channel-shaped spacers 132, which are mounted on rods 134 extending between the opposite wall 78 and 80 of the inner rotor 33.
  • the outer rotor 34 forms a filter structure and has three annular walls 140 extending transversely of the axis of rotation of the outer rotor 34.
  • the wall 140 are secured to one another and to the opposite side walls 56 and 68 of the outer rotor 34 by means of rods 141 ( Figure 5).
  • the outer rotor is packed with sand 146, which serves as a filter medium.
  • Other filter media e.g. ceramic filter material or activated charcoal or a combination of different filter media, may be substituted for the sand 146.
  • Inner and outer heavy wire meshes 142a sandwiched with fine sand retention meshes 142b and inner micromeshes 142c, serve to retain the sand radially.
  • radially extending bulkheads 145 ( Figure 6) are equiangularly spaced around the outer rotor 34.
  • the weir structure 86 is provided with a semi-circular seal 152, in sliding, sealing contact with the side wall 56 of the outer rotor 34.
  • the seal 152 ensures that the liquid which has passed through the screen 70 of the inner rotor is retained in the outer rotor 34 until it flows through the sand 146.
  • a water pipe 153 with spray nozzles 155 is provided above the outer rotor 34 for back- washing the sand 146.
  • the compressor 20, the motor 22 and the tank 24, the inner and outer rotors 33 and 34, the auger 38, and the end portion 148 of the tank 12 are all accommodated within an air-tight enclosure, indicated generally by reference numeral 160, which includes an end wall 162 and a roof 164.
  • the settlement tank 12 is provided with a flexible cover 166, which can close off the top of the settlement tank 10 from the atmosphere.
  • Figure 13 shows a modification in which the inner rotor 33 of Figure 3 is replaced by a rotor 33a which is spaced axially from a rotor 34a, which replaces the rotor 34 of Figure 3.
  • the filter material which is indicated by reference numeral 200 and which comprises charcoal, activated carbon or lightweight ceramic filter medium, is contained between a cylindrical outer mesh material 202 and an inner mesh material indicated generally by reference numeral 204.
  • the inner mesh material 204 comprises radially extending portions 206 which are connected by inner cylindrically curved portions 208 and outer radially curved portions 210 so as to form radially inwardly open recesses or pockets 212.
  • the filter material 200 thus forms radially inwardly projecting walls 214. In this way, the effective filter area of the rotor 34a is substantially increased relative to that of the filter 34 of Figure 3.
  • the path of the liquid through the rotors 33a and 34a is indicated by the arrow line A- A of Figure 13, from which it can be seen that the liquid firstly passes radially outwardly through the rotor 33a, and then enters the interior of the rotor 34a through the pockets 212 and flows radially outwardly through the filter material 200.
  • Water sprays 220 and 222 are provided for back-flushing the rotors 33a and 34a, respectively, for periodically clearing them.
  • the rotor 34a includes a cylindrical baffle or cover 224 formed with gutters 226 at opposite sides and spaced inwardly from the inner cylindrically curved portions 208 for catching the liquid used for back-flushing the rotor 34a and discharging it axially from the rotor 34a.
  • the space between die inner and outer mesh materials 202 and 204 is closed at the left- hand side of the rotor 34a, as viewed in Figure 13, by a correspondingly-shaped plate 227, which leaves the left-hand side of the pockets 112 open.
  • the plate 227 has bee omitted form Figure 14 to facilitate the illustration of the rotor 34a.
  • the opposite side of the rotor 34a is closed by a circular plate 228, and the filter material 200 is also retained by radial partition walls 230.
  • the rotor is in the form of a screen which has end plates 330 and 332 with a plurality of bars indicated generally by reference numeral 334 spaced apart from one another along the length of the screen 302.
  • Each of the bars 334 is formed of a curved outer metal strip 336 connected to a pair of straight inner metal strips 338.
  • the bars 334 are provided in groups of three different sizes, so as to present, along the length of the inner periphery of the screen 302, a series of steps, as shown in Figure 16, forming a plurality of axially spaced annular recesses 340.
  • the bars 334 also form recesses or pockets 342 which extend radially outwardly.
  • the bars 334 are secured together by rods 346, which are secured at opposite ends to the end plates 330 and 332 and which connect the largest bars 334, and also by sub- assembly tie bolts, as indicated generally by reference numeral 348, which connect together the groups of bars 334, together with spacer plates 350 provided between the bars 334.
  • metal strips 352 which have a width in the radial direction of the screen which is greater than that of the remainder of the bars 334, serve to interconnect the groups of bars 334.

Landscapes

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

Abstract

Un appareil, destiné à séparer des éléments solides d'un liquide, comporte une vis sans fin creuse entourée d'un logement tubulaire, lequel présente à son sommet une ouverture qui permet à la matière solide de se déposer au travers d'une ouverture ménagée dans la vis sans fin creuse. Un tamis entourant la vis est disposé à une certaine distance radiale, vers l'extérieur à partir du logement tubulaire, pour permettre à un mélange de la matière solide et du liquide de passer entre le logement tubulaire et le tamis, ce qui permet au liquide de s'écouler vers l'extérieur au travers de ce dernier tandis qu'une partie au moins de la matière solide est retenue sur le côté interne du tamis. Un moteur permet de faire tourner le tamis autour de la vis pour que la matière solide ainsi retenue puisse tomber au travers de l'ouverture ménagée dans la vis pour être évacuée par cette dernière. Un filtre permet de filtrer le liquide qui traverse le tamis, le filtre et le tamis étant rotatifs coaxialement.
PCT/CA1994/000327 1993-06-23 1994-06-22 Appareil separant les solides des liquides Ceased WO1995001216A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU69925/94A AU6992594A (en) 1993-06-23 1994-06-22 Apparatus for separating solids and liquids
EP94918707A EP0705133A1 (fr) 1993-06-23 1994-06-22 Appareil separant les solides des liquides

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002099022A CA2099022A1 (fr) 1993-06-23 1993-06-23 Installation pour separer liquides et solides
CA2,099,022 1993-06-23

Publications (1)

Publication Number Publication Date
WO1995001216A1 true WO1995001216A1 (fr) 1995-01-12

Family

ID=4151827

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1994/000327 Ceased WO1995001216A1 (fr) 1993-06-23 1994-06-22 Appareil separant les solides des liquides

Country Status (4)

Country Link
EP (1) EP0705133A1 (fr)
AU (1) AU6992594A (fr)
CA (1) CA2099022A1 (fr)
WO (1) WO1995001216A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996030102A1 (fr) * 1995-03-27 1996-10-03 Roto-Sieve Ab Dispositif d'egouttage mecanique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111729354B (zh) * 2020-05-30 2021-11-23 乐清市荣禹污水处理有限公司 一种沉淀池
CN111790203B (zh) * 2020-07-22 2021-10-15 李振涛 一种基于污水处理用转盘过滤机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1630274A (en) * 1923-04-20 1927-05-31 Ray A North Water filter
GB725333A (en) * 1952-04-08 1955-03-02 Wilhelm Passavant Drum-type screening machine
FR1116888A (fr) * 1954-12-15 1956-05-14 Chabal & Cie C Station filtrante à débit variable, en commande par l'aval, avec dispositif d'amortissement des variations de débit
US2748951A (en) * 1951-05-04 1956-06-05 Dubach Max Device for separating solid particles from liquids
WO1992004094A2 (fr) * 1990-09-05 1992-03-19 Abel Guenther Appareil servant a separer des liquides et des solides
US5133860A (en) * 1991-12-31 1992-07-28 Tai Liang C Solid and liquid separator with a liquid filter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1630274A (en) * 1923-04-20 1927-05-31 Ray A North Water filter
US2748951A (en) * 1951-05-04 1956-06-05 Dubach Max Device for separating solid particles from liquids
GB725333A (en) * 1952-04-08 1955-03-02 Wilhelm Passavant Drum-type screening machine
FR1116888A (fr) * 1954-12-15 1956-05-14 Chabal & Cie C Station filtrante à débit variable, en commande par l'aval, avec dispositif d'amortissement des variations de débit
WO1992004094A2 (fr) * 1990-09-05 1992-03-19 Abel Guenther Appareil servant a separer des liquides et des solides
US5133860A (en) * 1991-12-31 1992-07-28 Tai Liang C Solid and liquid separator with a liquid filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996030102A1 (fr) * 1995-03-27 1996-10-03 Roto-Sieve Ab Dispositif d'egouttage mecanique

Also Published As

Publication number Publication date
AU6992594A (en) 1995-01-24
EP0705133A1 (fr) 1996-04-10
CA2099022A1 (fr) 1994-12-24

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