WO2021183017A1 - Purification arrangement for dirty water - Google Patents

Purification arrangement for dirty water Download PDF

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Publication number
WO2021183017A1
WO2021183017A1 PCT/SE2021/000003 SE2021000003W WO2021183017A1 WO 2021183017 A1 WO2021183017 A1 WO 2021183017A1 SE 2021000003 W SE2021000003 W SE 2021000003W WO 2021183017 A1 WO2021183017 A1 WO 2021183017A1
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WO
WIPO (PCT)
Prior art keywords
tank
purification
food residue
fat
feeder
Prior art date
Application number
PCT/SE2021/000003
Other languages
French (fr)
Inventor
Joakim Fiedler
Original Assignee
Fettavskiljaren Sverige Ab
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 Fettavskiljaren Sverige Ab filed Critical Fettavskiljaren Sverige Ab
Publication of WO2021183017A1 publication Critical patent/WO2021183017A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
    • E03F5/16—Devices for separating oil, water or grease from sewage in drains leading to the main sewer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/12—Auxiliary equipment particularly adapted for use with liquid-separating apparatus, e.g. control circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
    • 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
    • B01D21/003—Sedimentation tanks provided with a plurality of compartments separated by a partition wall
    • 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
    • B01D21/006—Settling tanks provided with contact surfaces, e.g. baffles, particles with co-current flow direction of liquid and 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
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2221/00—Applications of separation devices
    • B01D2221/02—Small separation devices for domestic application, e.g. for canteens, industrial kitchen, washing machines
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/32—Hydrocarbons, e.g. oil
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus

Definitions

  • the present invention relates to purification arrangement for dirty water according to the introductory portion of the independent claim.
  • Dirt water purification devices separate the dirty liquid into three components, one consisting of nearly pure water, one consisting of nearly pure fat and one consisting mainly of food residues. When the cleaning device has accumulated a sufficient amount of food residue, it must be emptied of food residue and this is time consuming.
  • An object of the invention is therefore to provide a purification arrangement for dirty water which does not have to be emptied as often as purification arrangements known in the art.
  • the invention relates to a purification arrangement
  • a purification arrangement comprising a purification tank 1 with an inlet 8 for dirty water and an outlet 9 for purified water.
  • the dirty water in the purification tank 1 is separated into a fat component and a food residue component.
  • the purification arrangement further comprises a food residue tank 5 and a food residue feeder 7a-c and an oil tank 6 and an oil feeder.
  • the food residue feeder 7a-c brings food residue components to the food residue tank 5 and the oil feeder brings fat components to the oil tank 6.
  • the purification tank 1 tapers upwards and downwards from its central portion.
  • At least a portion of the food residue feeder 7a-c extends at least partially vertically and where this portion brings solid material is upwards but allows fluids to flow downwards.
  • Fig. 1 shows an embodiment of the purification arrangement seen from the side in partial cross section
  • Fig. 2 shows in greater detail the purification tank in the purification arrangement in cross section seen from the side
  • Fig. 3 shows in greater detail the purification tank in cross section seen from its short end
  • Fig. 4 shows the bottom of the purification tank seen from above
  • Fig. 5 shows the purification arrangement seen obliquely from above
  • Fig. 6 shows the purification arrangement seen from the short end of the purification tank
  • the invention relates to a purification arrangement which purifies dirty liquid with varying contents of water, fat and food residues.
  • the purifier divides the dirty liquid into three components, one consisting of nearly clean water, one consisting of nearly pure fat and one consisting mainly of food residues.
  • the purification takes place in a purification tank and here the three components are separated.
  • the fat is collected in an oil tank and the food residues are collected in a food residuer tank.
  • Fig. 1 shows an embodiment of the cleaning device seen from the side in partial cross section.
  • the purification device comprises three main components, a purification tank 1, an oil tank 6 and a food residue tank 5.
  • the purification tank 1 is connected to the oil tank 6 and the food residue tank 5 with pipes 4, 7b-c.
  • the transfer of fat to the oil tank 6 through the oil hose 4 takes place with a pump and is described in greter detail in connection with the following figures.
  • the transfer of food residues takes place with augers 7b-c in the food residue pipes and is described in greater detail in connection with Figure 2.
  • Dirty liquid is supplied to the purification tank 1 through a dirt water inlet 8 and purified liquid is discharged from the purification tank 1 through a clean water outlet 9.
  • Fig. 2 shows the purification tank 1 in the purification arrangement in cross section as seen from the side in greater detail.
  • the purification tank 1 is constituted by what, as seen from the side, is a nearly rectangular container.
  • On the top of the container a dirty water inlet 8 is provided at its right end and on the top of the container at its left end a clean water outlet 9 is provided. Between the dirty water inlet 8 and the clean water outlet 9, a vent opening 11 and the fat outlet with associated pump are provided .
  • Dirt water supplied to the purification tank through the dirt water inlet 8 remains for a while due to the size of the purification tank.
  • the purification tank thus reduces the speed of the effluent so that the fat has time to float up and the food residues sink. This natural splitting of the dirty water into three components is the process used to purify it and collect fat and food residues.
  • the outlet for fat is arranged high up on the purification tank, so that the outlet reaches fat that has floated up and can such it out.
  • the purification tank is provided with fat level sensors 10 which give a control signal when the level where fat and water are split is sufficiently low, so that the amount of fat thus is high.
  • the fat pump starts when the fat level has reached the sensor and then runs for a given period of time.
  • a feed auger 7a which extends horizontally.
  • the feed auger rotates slowly all the time so that the food residues are pushed out to the right in the figure through the feed tube 2.
  • the food residue tube 2 then bends obliquely upwards and the upwardly angled portion of the feed tube also contains a slowly rotating feed auger 7b.
  • the horizontal feeding auger 7a generates a steady stream of food residue and water, which moves obliquely upwards through the upwardly angled feed auger 7b. While the food residues are efficiently fed upwards in the upwardly angled feed auger, water can flow back into the purification tank.
  • the effect of the upwardly angled feed augers 7b-c, is that the food residues are concentrated and have a lower water content than they would otherwise have had.
  • Fig. 3 shows the purification tank in cross section seen from its short end in greater detail, so the viewer thus sees a view where the centre axis of the horizontal feed ing auger7a points out of the paper plane.
  • the purification tank has an elliptical shape. This means that food residues that sink down are concentrated towards the tapered bottom and fat that rises upwards is concentrated towards the tapered top of the purification tank.
  • Fig. 4 shows the bottom of the purification tank seen from above and here it is apparent that the horizontal feed hub 7a extends along the mid line of the purification tank, that is in the deepest part of the purification tank.
  • the purification tank comprises a number of partition walls 12 which prevent the dirty water from flowing directly from the dirty water inlet 8 to the clean water outlet 9 and force it to take a longer path with a slower flow. The slower flow gives time for the dirty water to split into three components.
  • Fig. 5 shows the purification arrangement seen obliquely from above and here it is clearly illustrated how both fat and food residues are forced upwards and then fall into the respective tank.
  • a fat sensor 14 which detects the presence of fat. Normally, the outlet on the oil hose 4 should only contain fat when the fat pump is running, but if the oil tank 6 is filled, the fat sensor 14 responds. This can be used to alert the user that the oil tank 6 must be emptied.
  • a motor 16 which drives the feed augers 7a-c and a filling sensor 15. If the food residue tank 5 is filled, the filling sensor 15 responds. This can be used to alert the user that the food residue tank 5 must be emptied.
  • the figure also illustrates a closable opening 13 provided with a lid on the upper part of the short side of the purification tank 1.
  • the user can open the opening and take a sample of the liquid to check the fat content.
  • a corresponding fat opening 13 is also found on the opposite short side of the purification tank 1.
  • Fig. 6 shows the purification device as seen from the elliptical short end of the purification tank 1.
  • the food residue tank 5 is arranged behind the purification tank 1 and the oil tank 6 is in the figure to the left of the food residue tank 5.
  • the oil tank 6 is here denoted such as the fat is often in the form of oil, but the fat can of course also be a mixture of liquid and solid fats and can have a low or high water content. Regardless of the type of fat, the term oil here refers to all conceivable forms of pumpable fat, fat mixtures and fat and water mixtures.
  • two upwardly angled feeding augers 7b-c are used, which allow water to flow back against the direction in which the augers act.
  • other types of feeding devices can be used, which drive food residues upwards but allow water to drain off backwards, such as an inclined conveyor belt or the like.
  • more or fewer inclined feeders 7b-c than two can also be used, regardless of whether they are embodied as augers, conveyor belts or in some other way.
  • the purification tank has an elliptical shape so that food residue falling downwards is concentrated towards the tapered bottom and fat rising upwards is concentrated towards the tapered top of the purification tank.
  • the purification tank can have another shape which is tapered upwards and downwards, as long as the concentration effect is achieved.
  • the purification tank can also have a shape that is not tapered upwards and downwards, but then the concentration effect is lost.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The invention relates to a purification arrangement comprising a purification tank (1) with an inlet (8) for dirty water and an outlet (9) for purified water. The dirty water in the purification tank (1) is separated into a fat component and a food residue component. The purification device has a food residue tank (5) and a food residue feeder (7a-c) as well as an oil tank (6) and an oil feeder. The food residue feeder (7a-c) brings food residue components to the food residue tank (5) and the oil feeder brings fat components to the oil tank (6). In one embodiment, the purification tank (1) is tapered upwards and downwards. In this way, fat that flows upwards and food residues that sink downwards are concentrated in the tapered portions. In a further embodiment, the food residue feeder (7a-c) extends partially vertically, where this portion of solid material upwards but allows fluids to flow downwards. In this way, food residues are concentrated and the water content drops.

Description

Purification arrangement for dirty water
The present invention relates to purification arrangement for dirty water according to the introductory portion of the independent claim.
Background of the invention
Dirt water purification devices separate the dirty liquid into three components, one consisting of nearly pure water, one consisting of nearly pure fat and one consisting mainly of food residues. When the cleaning device has accumulated a sufficient amount of food residue, it must be emptied of food residue and this is time consuming.
An object of the invention is therefore to provide a purification arrangement for dirty water which does not have to be emptied as often as purification arrangements known in the art.
These and other objects are attained by a purification arrangement for dirty water according to the characterising portion of the independent claim.
Summary of the invention
The invention relates to a purification arrangement comprising a purification tank 1 with an inlet 8 for dirty water and an outlet 9 for purified water. The dirty water in the purification tank 1 is separated into a fat component and a food residue component. The purification arrangement further comprises a food residue tank 5 and a food residue feeder 7a-c and an oil tank 6 and an oil feeder. The food residue feeder 7a-c brings food residue components to the food residue tank 5 and the oil feeder brings fat components to the oil tank 6.
In an advantageous embodiment of the invention, the purification tank 1 tapers upwards and downwards from its central portion.
In a further advantageous embodiment of the invention, at least a portion of the food residue feeder 7a-c extends at least partially vertically and where this portion brings solid material is upwards but allows fluids to flow downwards. Brief description of the drawings
Fig. 1 shows an embodiment of the purification arrangement seen from the side in partial cross section
Fig. 2 shows in greater detail the purification tank in the purification arrangement in cross section seen from the side
Fig. 3 shows in greater detail the purification tank in cross section seen from its short end
Fig. 4 shows the bottom of the purification tank seen from above
Fig. 5 shows the purification arrangement seen obliquely from above
Fig. 6 shows the purification arrangement seen from the short end of the purification tank
Description of a preferred embodiment
The invention relates to a purification arrangement which purifies dirty liquid with varying contents of water, fat and food residues. The purifier divides the dirty liquid into three components, one consisting of nearly clean water, one consisting of nearly pure fat and one consisting mainly of food residues. The purification takes place in a purification tank and here the three components are separated. The fat is collected in an oil tank and the food residues are collected in a food residuer tank.
The purification process and the processes for collecting and storing fat and food residues are described with reference to the accompanying figures.
Fig. 1 shows an embodiment of the cleaning device seen from the side in partial cross section. The purification device comprises three main components, a purification tank 1, an oil tank 6 and a food residue tank 5. The purification tank 1 is connected to the oil tank 6 and the food residue tank 5 with pipes 4, 7b-c. The transfer of fat to the oil tank 6 through the oil hose 4 takes place with a pump and is described in greter detail in connection with the following figures. The transfer of food residues takes place with augers 7b-c in the food residue pipes and is described in greater detail in connection with Figure 2. Dirty liquid is supplied to the purification tank 1 through a dirt water inlet 8 and purified liquid is discharged from the purification tank 1 through a clean water outlet 9.
Fig. 2 shows the purification tank 1 in the purification arrangement in cross section as seen from the side in greater detail. The purification tank 1 is constituted by what, as seen from the side, is a nearly rectangular container. On the top of the container a dirty water inlet 8 is provided at its right end and on the top of the container at its left end a clean water outlet 9 is provided. Between the dirty water inlet 8 and the clean water outlet 9, a vent opening 11 and the fat outlet with associated pump are provided .
Dirt water supplied to the purification tank through the dirt water inlet 8 remains for a while due to the size of the purification tank. The purification tank thus reduces the speed of the effluent so that the fat has time to float up and the food residues sink. This natural splitting of the dirty water into three components is the process used to purify it and collect fat and food residues.
The outlet for fat is arranged high up on the purification tank, so that the outlet reaches fat that has floated up and can such it out. The purification tank is provided with fat level sensors 10 which give a control signal when the level where fat and water are split is sufficiently low, so that the amount of fat thus is high. The fat pump starts when the fat level has reached the sensor and then runs for a given period of time.
At the bottom of the purification tank there is arranged a feed auger 7a which extends horizontally. The feed auger rotates slowly all the time so that the food residues are pushed out to the right in the figure through the feed tube 2. The food residue tube 2 then bends obliquely upwards and the upwardly angled portion of the feed tube also contains a slowly rotating feed auger 7b.
The horizontal feeding auger 7a generates a steady stream of food residue and water, which moves obliquely upwards through the upwardly angled feed auger 7b. While the food residues are efficiently fed upwards in the upwardly angled feed auger, water can flow back into the purification tank. The effect of the upwardly angled feed augers 7b-c, is that the food residues are concentrated and have a lower water content than they would otherwise have had.
Fig. 3 shows the purification tank in cross section seen from its short end in greater detail, so the viewer thus sees a view where the centre axis of the horizontal feed ing auger7a points out of the paper plane. As seen from this perspective, it can be seen that the purification tank has an elliptical shape. This means that food residues that sink down are concentrated towards the tapered bottom and fat that rises upwards is concentrated towards the tapered top of the purification tank.
Fig. 4 shows the bottom of the purification tank seen from above and here it is apparent that the horizontal feed hub 7a extends along the mid line of the purification tank, that is in the deepest part of the purification tank. The purification tank comprises a number of partition walls 12 which prevent the dirty water from flowing directly from the dirty water inlet 8 to the clean water outlet 9 and force it to take a longer path with a slower flow. The slower flow gives time for the dirty water to split into three components.
Fig. 5 shows the purification arrangement seen obliquely from above and here it is clearly illustrated how both fat and food residues are forced upwards and then fall into the respective tank. At the outlet of the oil hose 4, where the fat flows into the oil tank 6, there is a fat sensor 14 which detects the presence of fat. Normally, the outlet on the oil hose 4 should only contain fat when the fat pump is running, but if the oil tank 6 is filled, the fat sensor 14 responds. This can be used to alert the user that the oil tank 6 must be emptied.
At the outlet of the food residue pipe 2 where food residues fall into the food residue tank 5, there are provided a motor 16 which drives the feed augers 7a-c and a filling sensor 15. If the food residue tank 5 is filled, the filling sensor 15 responds. This can be used to alert the user that the food residue tank 5 must be emptied.
The figure also illustrates a closable opening 13 provided with a lid on the upper part of the short side of the purification tank 1. The user can open the opening and take a sample of the liquid to check the fat content. A corresponding fat opening 13 is also found on the opposite short side of the purification tank 1.
Fig. 6 shows the purification device as seen from the elliptical short end of the purification tank 1. The food residue tank 5 is arranged behind the purification tank 1 and the oil tank 6 is in the figure to the left of the food residue tank 5. The oil tank 6 is here denoted such as the fat is often in the form of oil, but the fat can of course also be a mixture of liquid and solid fats and can have a low or high water content. Regardless of the type of fat, the term oil here refers to all conceivable forms of pumpable fat, fat mixtures and fat and water mixtures.
In the preferred embodiment, two upwardly angled feeding augers 7b-c are used, which allow water to flow back against the direction in which the augers act. Obviously, other types of feeding devices can be used, which drive food residues upwards but allow water to drain off backwards, such as an inclined conveyor belt or the like. Obviously, more or fewer inclined feeders 7b-c than two can also be used, regardless of whether they are embodied as augers, conveyor belts or in some other way.
In the preferred embodiment, the purification tank has an elliptical shape so that food residue falling downwards is concentrated towards the tapered bottom and fat rising upwards is concentrated towards the tapered top of the purification tank. Obviously, the purification tank can have another shape which is tapered upwards and downwards, as long as the concentration effect is achieved. The purification tank can also have a shape that is not tapered upwards and downwards, but then the concentration effect is lost.
Reference denotations
1 Purification tank
2 Food residue tubes
4 Oil hose
5 Food residue tank
6 Oil tank
7a Feeding auger 7b Feeding auger
7 c Feeding auger
8 Dirtwater inlet
9 Clean water outlet
10 Fat level sensor
11 Venting opening
12 Partition
13 Fat test opening
14 Outlet with sensor
15 Outlet with sensor
16 Motor

Claims

Claims
1 A purification arrangement comprising a purification tank (1) with an inlet (8) for dirty water and an outlet (9) for purified water, wherein the dirty water in the purification tank (1) is separated into a fat component and a food residue component, wherein the purification arrangement further comprises a food residue tank (5 ) and a food residue feeder (7a-c) and an oil tank (6) and an oil feeder, wherein the food residue feeder (7a-c) brings food residue components to the food residue tank (5) and where the oil feeder brings fat components to the oil tank (6), characterized in that the purification tank (1) is divided into at least two portions by partitions (12) which prevent the dirty water from flowing directly from the dirty water inlet (8) to the clean water outlet (9).
2 A purification arrangement according to claim 1 , characterized in that the purification tank (1) tapers upwards and downwards from its central portion.
3 A purification arrangement according to claim 1 or 2, characterized in that at least a portion of the food residue feeder (7a-c) extends at least partially vertically and where this portion brings solid material is upwards but allows fluids to flow downwards.
4 A purification arrangement according to claim 3, characterized in that at least one portion of the feed residue feeder (7a-c) comprises a feeding auger (7b-c).
PCT/SE2021/000003 2020-03-10 2021-03-09 Purification arrangement for dirty water WO2021183017A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE2000049A SE2000049A1 (en) 2020-03-10 2020-03-10 Dirt water purification device
SE2000049-3 2020-03-10

Publications (1)

Publication Number Publication Date
WO2021183017A1 true WO2021183017A1 (en) 2021-09-16

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4268396A (en) * 1979-07-23 1981-05-19 Lowe Engineering Company Oil recovery apparatus and method
DE4101173A1 (en) * 1991-01-17 1992-07-23 Passavant Werke Sepg. floating and sinking impurities from waste water
US5178754A (en) * 1991-05-20 1993-01-12 Thermaco, Inc. Grease and solids removal system
US6849176B1 (en) * 2003-09-04 2005-02-01 Thermaco, Inc. Grease separator for kitchen sinks and other applications
US20140083955A1 (en) * 2011-12-08 2014-03-27 James O'Neill Apparatus for treating waste water
EP2838675A1 (en) * 2012-04-17 2015-02-25 Rensa Entreprenad Sverige AB System for the treatment of food waste in connection to dish washing installations
EP3221023A1 (en) * 2014-11-19 2017-09-27 Rensa Entreprenad Sverige AB Food-waste tank for the separation of food waste from water

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4268396A (en) * 1979-07-23 1981-05-19 Lowe Engineering Company Oil recovery apparatus and method
DE4101173A1 (en) * 1991-01-17 1992-07-23 Passavant Werke Sepg. floating and sinking impurities from waste water
US5178754A (en) * 1991-05-20 1993-01-12 Thermaco, Inc. Grease and solids removal system
US6849176B1 (en) * 2003-09-04 2005-02-01 Thermaco, Inc. Grease separator for kitchen sinks and other applications
US20140083955A1 (en) * 2011-12-08 2014-03-27 James O'Neill Apparatus for treating waste water
EP2838675A1 (en) * 2012-04-17 2015-02-25 Rensa Entreprenad Sverige AB System for the treatment of food waste in connection to dish washing installations
EP3221023A1 (en) * 2014-11-19 2017-09-27 Rensa Entreprenad Sverige AB Food-waste tank for the separation of food waste from water

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