CA2312141C - Separation tank - Google Patents
Separation tank Download PDFInfo
- Publication number
- CA2312141C CA2312141C CA002312141A CA2312141A CA2312141C CA 2312141 C CA2312141 C CA 2312141C CA 002312141 A CA002312141 A CA 002312141A CA 2312141 A CA2312141 A CA 2312141A CA 2312141 C CA2312141 C CA 2312141C
- Authority
- CA
- Canada
- Prior art keywords
- enclosure
- separation tank
- compartment
- liquid
- plates
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
- B01D21/0045—Plurality of essentially parallel 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
- B01D21/0069—Making of contact surfaces, structural details, materials therefor
- B01D21/0075—Contact surfaces having surface features
-
- 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
- B01D21/2405—Feed mechanisms for settling tanks
-
- 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
Abstract
A separation tank includes a liquid containing enclosure having a bottom and a defining sidewall. The enclosure is divided by baffles into several compartments. Each baffle serves as a spillway over which liquid spills from one compartment into an adjacent compartment. A plurality of closely spaced parallel plates are positioned in a first of the compartments at a first end of the enclosure. The plates are spaced from the bottom of the enclosure and positioned in the path of liquid flow into a second of the compartments.
Description
TITLE OF THE INVENTION:
Separation Tank FIELD OF THE INVENTION
The present invention relates to a separation tank used to separate solids and liquids or liquids of differing densities.
BACKGROUND OF THE INVENTION
Separation tanks are divided by baffles into several compartments. Each baffle serves as a spillway over which liquid spills from one compartment into an adjacent compartment. As liquid passes through successive compartments entrained solids and liquids of greater density gradually settle out. The performance of a separation tank can be dramatically improved if a majority of the solids and a majority of the liquids of greater density can be removed in a first of the several compartments.
SU1~IARY OF THE INVENTION
What is required is a separation tank that has means for removing solids and liquids of greater density in the first of the several compartments.
According to the present invention there is provided a separation tank which includes a liquid containing enclosure having a bottom and a defining sidewall. The enclosure is divided by baffles into several compartments. Each baffle serves as a spillway over which liquid spills from one compartment into an adjacent compartment. A plurality of closely spaced parallel plates are positioned in a first of the compartments at a first end of the enclosure. The plates are spaced from the bottom of the enclosure and positioned in the path of liquid flow into a second of the compartments.
Separation Tank FIELD OF THE INVENTION
The present invention relates to a separation tank used to separate solids and liquids or liquids of differing densities.
BACKGROUND OF THE INVENTION
Separation tanks are divided by baffles into several compartments. Each baffle serves as a spillway over which liquid spills from one compartment into an adjacent compartment. As liquid passes through successive compartments entrained solids and liquids of greater density gradually settle out. The performance of a separation tank can be dramatically improved if a majority of the solids and a majority of the liquids of greater density can be removed in a first of the several compartments.
SU1~IARY OF THE INVENTION
What is required is a separation tank that has means for removing solids and liquids of greater density in the first of the several compartments.
According to the present invention there is provided a separation tank which includes a liquid containing enclosure having a bottom and a defining sidewall. The enclosure is divided by baffles into several compartments. Each baffle serves as a spillway over which liquid spills from one compartment into an adjacent compartment. A plurality of closely spaced parallel plates are positioned in a first of the compartments at a first end of the enclosure. The plates are spaced from the bottom of the enclosure and positioned in the path of liquid flow into a second of the compartments.
With the separation tank, as described above, it has been determined that the use of the plurality of closely spaced parallel plates results in an early knock out of solids or dense liquids.
Although beneficial results may be obtained through the use of the separation tank, as described above, it has been determined that the plates are more effective in achieving a separation of solids or dense liquids if they are angled toward the first end of the enclosure. Beneficial results have been obtained with an angle of 5 degrees and 45 degrees.
Although beneficial results may be obtained through the use of the separation tank, as described above, it has been determined that the plates are more effective in achieving a separation of solids or dense liquids when a top peripheral edge of each plate has a plurality of teeth with a flow passage between each of the plurality of teeth to accommodate liquid flow. For best results the flow passages of each plate are placed out of register with the flow passages of adjacent plates.
Although beneficial results may be obtained through the use of the separation tank, as described above, it is preferred that some means be provided for removing the solids and dense liquids that have been separated in the first compartment.
Even more beneficial results are, therefore, obtained when a solids and dense liquids outlet is provided at the first end of the enclosure. To facilitate the movement of solids to the solids and dense liquids outlet it is preferred that the bottom of the first compartment be downwardly angled toward the solids and dense liquids outlet.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, wherein:
FIGURE 1 is a perspective view of a separation tank constructed in accordance with the teachings of the present invention.
FIGURE 2 is a top plan view of the separation tank illustrated in FIGURE 1.
FIGURE 3 is a side elevation view, in section, of the separation tank illustrated in FIGURE 1.
FIGURE 4 is a detailed front elevation view of parallel plate structure with teeth along the top peripheral edge.
FIGURE 5 is a side elevation view, in section, of the separation tank illustrated in FIGURE 1 with a centrifuge attached.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The preferred embodiment, a separation tank generally identified by reference numeral 10, will now be described with reference to FIGURES 1 through 5.
Referring to FIGURE l, there is provided a separation tank 10, comprised of a liquid containing enclosure 12 which has a bottom 14, a sidewall 16, a first end 18 and a second end 20.
Enclosure 12 is divided by baffles 22 into several compartments 24. Each baffle 22 serves as a spillway over which liquid spills from one compartment 24 into an adjacent compartment 24.
A plurality of closely spaced parallel plates 28 are positioned in a first 26 of compartments 24 at first end 18 of enclosure 12 .
Referring to FIGURE 3, plates 28 are spaced from bottom 14 of enclosure 12 and positioned in the path of liquid flowing into a second of compartments 24. Plates 28 are angled toward first end 18 of enclosure 12 at an angle of between 5 degrees and 45 degrees.
Referring to FIGURE 4, a top peripheral edge 30 of each plate 28 has a plurality of teeth 32 with a flow passage 34 between each of plurality of teeth 32 to accommodate liquid flow. In the illustrated embodiment teeth 32 are shown as being pointed however teeth need not be pointed. As an example, teeth may be rounded instead of pointed. Flow passages 34 of each plate 28 are out of register with flow passages 34 of adjacent plates 28, such that liquid flowing through flow passages 34 in one plate 28 encounter teeth 32 of adjacent plate 28.
Referring to FIGURE 2, a clear liquid outlet 38 is located at second end 20 of enclosure 12. An inlet 40 through which solids and dense liquid flow into separation tank 10 is shown at first end 18 of enclosure 12 above first compartment 26.
Referring to FIGURE 3, a solids and dense liquids outlet 36 is located at first end 18 of enclosure 12. Bottom 14 in first compartment 26 is downwardly angled toward solids and dense liquids outlet 36 at an angle of between 40 - 60 degrees.
Referring to FIGURE 5, a conduit 42 extends from solids and dense liquids outlet 36 to a centrifuge 44.
The use and operation of separation tank 10 will now be described with reference to FIGURES 1 through 5.
Referring to FIGURE l, there is provided separation tank 10, comprised of liquid containing enclosure 12. Inlet 40 is located at first end 18 of enclosure 12 above first compartment 26. Solid and dense liquids flow from inlet 40 into first compartment 26 of separation tank 10. Solid and dense liquids continue flowing into first compartment 26 filling first compartment 26 until solid and dense fluids overflow into plates 28.
Referring to FIGURE 3, plates 28 are spaced from bottom 14 of enclosure 12 and positioned in path of liquid flowing into a second of compartments 24 located adjacent to first compartment 26. Plates 28 are angled toward first end 18 of enclosure 12 at an angle of between 5 degrees and 45 degrees.
Referring to FIGURE 4, top peripheral edge of each of plates 28 has a plurality of teeth 32 with flow passage 32 between teeth 32. Flow passages 32 of each plate 28 are out of register with flow passages 32 of adjacent plates 28 so that liquid flowing from first compartment 26 through flow passage 32 in one plate 28 encounters teeth 32 of adjacent plate 28.
In doing so teeth 32 block solids and dense particles from flowing with liquid through flow passage 32 and over to next plate 28.
Although beneficial results may be obtained through the use of the separation tank, as described above, it has been determined that the plates are more effective in achieving a separation of solids or dense liquids if they are angled toward the first end of the enclosure. Beneficial results have been obtained with an angle of 5 degrees and 45 degrees.
Although beneficial results may be obtained through the use of the separation tank, as described above, it has been determined that the plates are more effective in achieving a separation of solids or dense liquids when a top peripheral edge of each plate has a plurality of teeth with a flow passage between each of the plurality of teeth to accommodate liquid flow. For best results the flow passages of each plate are placed out of register with the flow passages of adjacent plates.
Although beneficial results may be obtained through the use of the separation tank, as described above, it is preferred that some means be provided for removing the solids and dense liquids that have been separated in the first compartment.
Even more beneficial results are, therefore, obtained when a solids and dense liquids outlet is provided at the first end of the enclosure. To facilitate the movement of solids to the solids and dense liquids outlet it is preferred that the bottom of the first compartment be downwardly angled toward the solids and dense liquids outlet.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, wherein:
FIGURE 1 is a perspective view of a separation tank constructed in accordance with the teachings of the present invention.
FIGURE 2 is a top plan view of the separation tank illustrated in FIGURE 1.
FIGURE 3 is a side elevation view, in section, of the separation tank illustrated in FIGURE 1.
FIGURE 4 is a detailed front elevation view of parallel plate structure with teeth along the top peripheral edge.
FIGURE 5 is a side elevation view, in section, of the separation tank illustrated in FIGURE 1 with a centrifuge attached.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The preferred embodiment, a separation tank generally identified by reference numeral 10, will now be described with reference to FIGURES 1 through 5.
Referring to FIGURE l, there is provided a separation tank 10, comprised of a liquid containing enclosure 12 which has a bottom 14, a sidewall 16, a first end 18 and a second end 20.
Enclosure 12 is divided by baffles 22 into several compartments 24. Each baffle 22 serves as a spillway over which liquid spills from one compartment 24 into an adjacent compartment 24.
A plurality of closely spaced parallel plates 28 are positioned in a first 26 of compartments 24 at first end 18 of enclosure 12 .
Referring to FIGURE 3, plates 28 are spaced from bottom 14 of enclosure 12 and positioned in the path of liquid flowing into a second of compartments 24. Plates 28 are angled toward first end 18 of enclosure 12 at an angle of between 5 degrees and 45 degrees.
Referring to FIGURE 4, a top peripheral edge 30 of each plate 28 has a plurality of teeth 32 with a flow passage 34 between each of plurality of teeth 32 to accommodate liquid flow. In the illustrated embodiment teeth 32 are shown as being pointed however teeth need not be pointed. As an example, teeth may be rounded instead of pointed. Flow passages 34 of each plate 28 are out of register with flow passages 34 of adjacent plates 28, such that liquid flowing through flow passages 34 in one plate 28 encounter teeth 32 of adjacent plate 28.
Referring to FIGURE 2, a clear liquid outlet 38 is located at second end 20 of enclosure 12. An inlet 40 through which solids and dense liquid flow into separation tank 10 is shown at first end 18 of enclosure 12 above first compartment 26.
Referring to FIGURE 3, a solids and dense liquids outlet 36 is located at first end 18 of enclosure 12. Bottom 14 in first compartment 26 is downwardly angled toward solids and dense liquids outlet 36 at an angle of between 40 - 60 degrees.
Referring to FIGURE 5, a conduit 42 extends from solids and dense liquids outlet 36 to a centrifuge 44.
The use and operation of separation tank 10 will now be described with reference to FIGURES 1 through 5.
Referring to FIGURE l, there is provided separation tank 10, comprised of liquid containing enclosure 12. Inlet 40 is located at first end 18 of enclosure 12 above first compartment 26. Solid and dense liquids flow from inlet 40 into first compartment 26 of separation tank 10. Solid and dense liquids continue flowing into first compartment 26 filling first compartment 26 until solid and dense fluids overflow into plates 28.
Referring to FIGURE 3, plates 28 are spaced from bottom 14 of enclosure 12 and positioned in path of liquid flowing into a second of compartments 24 located adjacent to first compartment 26. Plates 28 are angled toward first end 18 of enclosure 12 at an angle of between 5 degrees and 45 degrees.
Referring to FIGURE 4, top peripheral edge of each of plates 28 has a plurality of teeth 32 with flow passage 32 between teeth 32. Flow passages 32 of each plate 28 are out of register with flow passages 32 of adjacent plates 28 so that liquid flowing from first compartment 26 through flow passage 32 in one plate 28 encounters teeth 32 of adjacent plate 28.
In doing so teeth 32 block solids and dense particles from flowing with liquid through flow passage 32 and over to next plate 28.
5 Referring to FIGURE 3, solids and dense liquids that are caught by teeth 32 flow downward along angled bottom 14 of first compartment 26 and exit separation tank 10 through solids and dense liquids outlet 36.
Referring to FIGURE 5, solids and dense liquids that exit through solids and dense liquids outlet 36 flow continuously through connecting conduit 42 and into centrifuge 44 for further separation by centrifugal force in centrifuge 44.
Referring to FIGURE 3, after passing though plates 28, remaining liquid continues to fill first compartment 26 until it spills over baffle 22 that separates first compartment 26 from adjacent compartment 24.
Upon entering into compartment 24 adjacent to first compartment 26, remaining liquid begins to fill compartment 24.
As compartment fills with liquid, entrained solids and liquids of greater density settle at bottom 14 of compartment 24, while clearer liquid continues to fill compartment 24. Eventually clearer liquid will fill compartment 24 and spill over baffle 22 into next adjacent compartment 24 leaving entrained solids and liquids of a greater density on bottom 14 of previous compartment 24.
Referring to FIGURE 2, when remaining liquid reaches compartment 24 located adjacent to second end 20 of separation tank 10, remaining liquids will be clear and will exit separation tank 10 through clear liquid outlet 38 at second end 20 of separation tank 10.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiment without departing from the spirit and scope of the invention as hereinafter defined in the Claims.
Referring to FIGURE 5, solids and dense liquids that exit through solids and dense liquids outlet 36 flow continuously through connecting conduit 42 and into centrifuge 44 for further separation by centrifugal force in centrifuge 44.
Referring to FIGURE 3, after passing though plates 28, remaining liquid continues to fill first compartment 26 until it spills over baffle 22 that separates first compartment 26 from adjacent compartment 24.
Upon entering into compartment 24 adjacent to first compartment 26, remaining liquid begins to fill compartment 24.
As compartment fills with liquid, entrained solids and liquids of greater density settle at bottom 14 of compartment 24, while clearer liquid continues to fill compartment 24. Eventually clearer liquid will fill compartment 24 and spill over baffle 22 into next adjacent compartment 24 leaving entrained solids and liquids of a greater density on bottom 14 of previous compartment 24.
Referring to FIGURE 2, when remaining liquid reaches compartment 24 located adjacent to second end 20 of separation tank 10, remaining liquids will be clear and will exit separation tank 10 through clear liquid outlet 38 at second end 20 of separation tank 10.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiment without departing from the spirit and scope of the invention as hereinafter defined in the Claims.
Claims (9)
1. A separation tank, comprising:
a liquid containing enclosure having a bottom and a defining sidewall, the enclosure being divided by baffles into several compartments, each baffle serving as a spillway over which liquid spills from one compartment into an adjacent compartment;
a plurality of closely spaced parallel plates positioned in a first of the compartments at a first end of the enclosure, the plates being spaced from the bottom of the enclosure and positioned in the path of liquid flow into a second of the compartments.
a liquid containing enclosure having a bottom and a defining sidewall, the enclosure being divided by baffles into several compartments, each baffle serving as a spillway over which liquid spills from one compartment into an adjacent compartment;
a plurality of closely spaced parallel plates positioned in a first of the compartments at a first end of the enclosure, the plates being spaced from the bottom of the enclosure and positioned in the path of liquid flow into a second of the compartments.
2. The separation tank as defined in Claim 1, wherein the plates are angled toward the first end of the enclosure.
3. The separation tank as defined in Claim 2, wherein the angle is between 5 degrees and 45 degrees.
4. The separation tank as defined in Claim 1, wherein flow passages are positioned along a top peripheral edge of each baffle plate.
5. The separation tank as defined in Claim 4, wherein the top peripheral edge of each plate has a plurality of teeth with one of the flow passage positioned between each of the plurality of teeth to accommodate liquid flow.
6. The separation tank as defined in Claim 4, wherein the flow passages of each plate are out of register with the flow passages of adjacent plates.
7. The separation tank as defined in Claim 1, wherein a solids and dense liquids outlet is provided at the first end of the enclosure.
8. The separation tank as defined in Claim 7, wherein the bottom of the first compartment is downwardly angled toward the solids and dense liquids outlet.
9. A separation tank, comprising:
a liquid containing enclosure having a bottom, a sidewall, a first end and a second end, the enclosure being divided by baffles into several compartments, each baffle serving as a spillway over which liquid spills from one compartment into an adjacent compartment;
a plurality of closely spaced parallel plates positioned in a first of the compartments at the first end of the enclosure, the plates being spaced from the bottom of the enclosure and positioned in the path of liquid flow into a second of the compartments, the plates being angled toward the first end of the enclosure at an angle of between 5 degrees and 45 degrees, a top peripheral edge of each plate having a plurality of teeth with a flow passage between each of the plurality of teeth to accommodate liquid flow, the flow passages of each plate being out of register with the flow passages of adjacent plates, such that liquid flowing through the flow passages in one plate encounter the teeth of the adjacent plate;
a solids and dense liquids outlet at the first end of the enclosure, with the bottom in the first compartment downwardly angled toward the solids and dense liquids outlet; and a clear liquid outlet at the second end of the enclosure.
a liquid containing enclosure having a bottom, a sidewall, a first end and a second end, the enclosure being divided by baffles into several compartments, each baffle serving as a spillway over which liquid spills from one compartment into an adjacent compartment;
a plurality of closely spaced parallel plates positioned in a first of the compartments at the first end of the enclosure, the plates being spaced from the bottom of the enclosure and positioned in the path of liquid flow into a second of the compartments, the plates being angled toward the first end of the enclosure at an angle of between 5 degrees and 45 degrees, a top peripheral edge of each plate having a plurality of teeth with a flow passage between each of the plurality of teeth to accommodate liquid flow, the flow passages of each plate being out of register with the flow passages of adjacent plates, such that liquid flowing through the flow passages in one plate encounter the teeth of the adjacent plate;
a solids and dense liquids outlet at the first end of the enclosure, with the bottom in the first compartment downwardly angled toward the solids and dense liquids outlet; and a clear liquid outlet at the second end of the enclosure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002312141A CA2312141C (en) | 2000-06-22 | 2000-06-22 | Separation tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002312141A CA2312141C (en) | 2000-06-22 | 2000-06-22 | Separation tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2312141A1 CA2312141A1 (en) | 2001-12-22 |
| CA2312141C true CA2312141C (en) | 2006-01-24 |
Family
ID=4166544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002312141A Expired - Fee Related CA2312141C (en) | 2000-06-22 | 2000-06-22 | Separation tank |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2312141C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023121661A1 (en) * | 2021-12-22 | 2023-06-29 | Mincon, Inc. | Textured substrate filter for removal of particulates from fluid |
-
2000
- 2000-06-22 CA CA002312141A patent/CA2312141C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2312141A1 (en) | 2001-12-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20180622 |