CN114307253A - Unpowered oil-water separator with improved structure - Google Patents
Unpowered oil-water separator with improved structure Download PDFInfo
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- CN114307253A CN114307253A CN202011082476.6A CN202011082476A CN114307253A CN 114307253 A CN114307253 A CN 114307253A CN 202011082476 A CN202011082476 A CN 202011082476A CN 114307253 A CN114307253 A CN 114307253A
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Abstract
The invention discloses an unpowered oil-water separator with an improved structure, which comprises a heating bin, a separation bin and a water outlet bin, wherein the heating bin is used for heating liquid in the heating bin; an oil outlet is formed in the top of the separation bin; the water outlet bin is provided with a water outlet; the height of the oil outlet is greater than that of the water outlet, and the heating bin, the separation bin and the water outlet bin are communicated in sequence. According to the invention, the heating bin is firstly utilized to demulsify the oil and water, so that the oil and water can be more favorably layered and separated in the separation bin, the layered oil and water are respectively discharged from the oil outlet and the water outlet, and the phenomenon of mixing and dissolving the oil and the water is basically eliminated, so that the water content of the discharged oil is very low, and the oil-water separation efficiency is greatly improved.
Description
Technical Field
The invention relates to sewage treatment equipment, in particular to an unpowered oil-water separator with an improved structure.
Background
The oil-water separator achieves the purpose of separation by utilizing the difference of specific gravity of suspended matters and water in the wastewater. The oil-water separator is built by reinforced concrete, steel plate and masonry. The structure of the oil-water separator adopts a horizontal flow mode mostly, oily wastewater enters the oil-water separator with a rectangular plane through a water distribution tank, slowly flows along the horizontal direction, oil products float on the water surface in the flow, and are pushed into an oil collecting pipe by an oil collecting pipe or an oil scraper arranged on the surface of a pool to flow into a dehydration tank.
The oil-water separator commonly used at present mainly has the following two problems: 1. because oil and water have certain phase miscibility phenomenon, so the oil-water separation is directly carried out by utilizing gravity, the separation effect is relatively poor, and the water content of the separated oil is higher. 2. The separation is usually carried out in the separation bin by utilizing gravity stratification, and because the time period of each cleaning is long, a large amount of sediments are usually accumulated at the bottom of the separation bin, the sediments are easy to carry out anaerobic fermentation in a closed environment, and a large amount of biogas is formed, and the sediments at the bottom can be taken out from the oil outlet in the rising process of the biogas, so that the oil outlet quality is further influenced.
Disclosure of Invention
The invention provides an unpowered oil-water separator with an improved structure, and aims to solve the problem of poor oil outlet quality in the prior art.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
an unpowered oil-water separator with an improved structure comprises a heating bin for heating liquid in the unpowered oil-water separator, a separation bin for layering oil and water, and a water outlet bin, wherein the heating bin is provided with an oil-water inlet; an oil outlet is formed in the top of the separation bin; the water outlet bin is provided with a water outlet, and the height of the oil outlet is greater than that of the water outlet; the heating bin, the separation bin and the water outlet bin are communicated in sequence.
In a preferred embodiment, an electric heating device is installed in the heating chamber.
In a preferred embodiment, the lower part of the heating chamber is provided with a steam inlet which is connected with an external steam heating device.
In a recommended embodiment, the middle part of the separation bin is provided with an inclined plate assembly, the inclined plate assembly divides the separation bin into an upper chamber and a lower chamber, and the inclined plate assembly comprises a plurality of inclined plates which are parallel to each other and are uniformly spaced. When the sediment is subjected to anaerobic fermentation, the methane and the sediment rise simultaneously, and the methane can smoothly pass through the inclined plate assembly and is finally discharged from the oil outlet; and the sediment is blocked by the inclined plate component and falls to the bottom of the separation bin again.
In a preferred embodiment, the heating chamber is in communication with a chamber; the water outlet bin is communicated with the lower chamber.
In a preferred embodiment, the vertical projection of each swash plate is located on an adjacent swash plate, and the inclination angle of each swash plate is 35 ° to 45 °. Tests prove that when the inclination angle of the inclined plate is 35-45 degrees, the blocking effect of the sediment is optimal.
In a recommended embodiment, the top surface of the separation chamber is in an eave shape and comprises a left inclined cover plate and a right inclined cover plate which are intersected, and the oil outlet is formed at the intersection of the left inclined cover plate and the right inclined cover plate. The oil liquid has an aggregation effect as suspension liquid, and part of the oil liquid can be aggregated on the left and right inclined cover plates and moves upwards along the left and right inclined cover plates to finally move to the oil outlet, so that only an oil block is ensured near the oil outlet, and the water cannot flow out of the oil outlet.
In a preferred embodiment, the lower part of the lower chamber forms a mud collection hopper, the bottom surface of which is provided with a mud outlet.
In a preferred embodiment, the height of the oil outlet is greater than the water outlet.
In a recommended embodiment, the lower end of the oil outlet is provided with a hydrophobic plate. The hydrophobic plate is made by forming a hydrophobic plasma coating with the surface tension of 3.0 x 10 < -2 > J/m2 to 7.2 x 10 < -2 > J/m2 on the surface of a non-woven fabric containing polymer fibers, has the functions of oil passing and water stopping, and prevents water from flowing out of an oil outlet, thereby further reducing the water content of the discharged oil.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects: according to the invention, the heating bin is firstly utilized to demulsify the oil and water, so that the oil and water which are mixed and dissolved are mutually separated, the oil and water can be more favorably promoted to be layered in the separation bin, the layered oil and water are respectively discharged from the oil outlet and the water outlet, and the oil and water mixing phenomenon is basically eliminated, so that the water content of the discharged oil is very low, and the oil and water separation efficiency is greatly improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic cross-sectional structure of the present invention.
Fig. 3 is a schematic structural diagram of a preferred embodiment of the present invention.
Detailed Description
For further understanding of the present invention, the present invention will be described in detail with reference to examples, which are provided for illustration of the present invention but are not intended to limit the scope of the present invention.
Referring to fig. 1, the unpowered oil-water separator with the improved structure comprises a vertical front side plate 11, a vertical rear side plate 12, a vertical left side plate 13, a vertical right side plate 14, a vertical left partition plate 21, a vertical right partition plate 22, a left inclined cover plate 31, a right inclined cover plate 32, a mud collecting hopper 4, supporting legs 5, a front bin plate 61, a rear bin plate 62 and a bottom bin plate 63.
Referring to fig. 1 and 2, the left and right ends of the front plate 11 are respectively fixedly connected to the front ends of the left and right plates 13 and 14; the left and right ends of the rear side plate 12 are fixedly connected to the rear ends of the left and right side plates 13 and 14, respectively. The height of the right partition plate 22 is the same as that of the right side plate 14, the right partition plate 22 is close to and parallel to the right side plate 14, the right partition plate 22 is installed between the front side plate 11 and the rear side plate 12, the front end and the rear end of the right partition plate 22 are respectively and fixedly connected to the front side plate 11 and the rear side plate 12, the front cabin plate 61 and the front side plate 11 are located on the same plane, the upper end of the front cabin plate 61 is fixedly connected to the lower end of the front side plate 11, and the left end and the right end of the front cabin plate 61 are respectively and fixedly connected to the right partition plate 22 and the right side plate 14; the rear compartment plate 62 and the rear side plate 12 are located on the same plane, the upper end of the rear compartment plate 62 is fixedly connected to the lower end of the rear side plate 12, and the left and right ends of the rear compartment plate 62 are respectively fixedly connected to the right partition plate 22 and the right side plate 14. The lower ends of the front bin plate 11 and the rear bin plate 62 are fixedly connected to the front end and the rear end of the bottom bin plate 63 respectively. The right partition 22, the right side plate 14, the right portion of the front side plate 11 (the right broken line in fig. 1 is a boundary), the right portion of the rear side plate 12, the front compartment plate 61, the rear compartment plate 62, and the bottom compartment plate 63 together enclose the heating compartment 1A. As shown in fig. 1, an oil-water inlet 15 is provided at a lower portion of the right side plate 14, and an oil-water mixture in a regulation pool (generally having a height of 5 m or more, not shown) located at a high position enters the heating chamber 1A through the oil-water inlet 15 via a corresponding pipe (not shown). The lower part of the front chamber plate 61 is provided with a steam inlet 64, and hot steam can continuously enter the heating chamber 1A from the steam inlet through a corresponding pipeline from an external steam heating device (not shown in the figure), so that the oil-water mixed liquid entering the heating chamber 1A is heated, and the oil-water mixed liquid is demulsified in the heating chamber 1A. In fig. 1, the upper end of the heating chamber 1A is open, and a movable cover (not shown) is installed at the upper end thereof as needed, so that the heating chamber 1A is completely sealed.
With continued reference to fig. 1 and 2, the height of the left partition 21 is the same as that of the left side plate 13, and the heights of the left partition 21 and the right side plate 13 are both smaller than the height of the right partition 22 or the right side plate 14, but the upper ends of the left and right partitions 21 and 22 and the left and right side plates 13 and 14 are all located on the same horizontal plane, and the lower end of the left side plate 13 is supported by the support foot 5. The left partition 21 is close to and parallel to the left side plate 13, the left partition 21 is installed between the front side plate 11 and the rear side plate 12, and the front and rear ends of the left partition 21 are fixedly connected to the front side plate 11 and the rear side plate 12, respectively. The left inclined cover plate 31 and the right inclined cover plate 32 are symmetrical to each other, the front end and the rear end of the left inclined cover plate 31 are fixedly connected to the front side plate 11 and the rear side plate 12 respectively, and the low-position end of the left inclined cover plate 31 is fixedly connected to the left partition plate 21; the front end and the rear end of the right inclined cover plate 32 are respectively fixedly connected to the front side plate 11 and the rear side plate 12, the low end of the right inclined cover plate 32 is fixedly connected to the right partition plate 22, the high ends of the left inclined cover plate 31 and the right inclined cover plate 32 are mutually fixedly connected at the middle positions of the front side plate 11 and the rear side plate 12, as shown in fig. 2, the left inclined cover plate 31 and the right inclined cover plate 32 jointly form an eave shape, and the oil outlet 33 is formed at the joint of the left inclined cover plate 31 and the right inclined cover plate 32. In this embodiment, the unpowered oil-water separator has two (or more) parallel mud collecting hoppers 4, each mud collecting hopper 4 has a plurality of inclined plates to form a substantially funnel shape, the inclined plates are located below the left inclined cover plate 31 and the right inclined cover plate 32, the upper ends of the mud collecting hoppers 4 are fixedly connected with the front side plate 11, the rear side plate 12, the right partition plate 22 and the left side plate 13, and the lower ends of the mud collecting hoppers 4 are provided with mud outlets 41. With continued reference to fig. 1, the left partition 21, the right partition 22, the front plate 11 corresponding between the left and right partitions, the rear plate 12 corresponding between the left and right partitions, the left inclined cover plate 31, the right inclined cover plate 32, and the two mud hoppers 4 together form a separation bin 1B.
With reference to the drawings, the left partition 21, the left side plate 13, the left portion of the front side plate 11 (the left dotted line in fig. 1 is a boundary), and the left portion of the rear side plate 12 together enclose a water outlet bin 1C, as can be seen from fig. 2, the lower end of the water outlet bin 1C is communicated with the separation bin 1B, and a water outlet 16 is formed in the upper portion of the left side plate 13 of the water outlet bin 1C. The water outlet bin 1C and the separation bin 1B share the left clapboard 21; the separation bin 1B and the heating bin 1A share a right partition plate 22, a communication port 23 is formed in the upper portion of the right partition plate 22, and the separation bin 1B and the heating bin 1A are communicated through the communication port 23.
Referring to fig. 2 simultaneously, the middle part of separation bin 1B is equipped with ramp assembly 1D, and this ramp assembly 1D separates the separation bin into upper and lower chamber 1B1, 1B2, ramp assembly 1D includes that a plurality of blocks are parallel to each other and evenly spaced swash plate. In a preferred embodiment, the vertical projection of each swash plate is located on an adjacent swash plate, and the inclination angle of each swash plate is 35 ° to 45 °. When the sediment is subjected to anaerobic fermentation, the methane and the sediment rise simultaneously, and the methane can smoothly pass through the inclined plate assembly and is finally discharged from the oil outlet; and the sediment is blocked by the inclined plate component and falls to the bottom of the separation bin again.
The heating bin 1A, the separation bin 1B and the water outlet bin 1C are communicated in sequence. Specifically, the heating chamber 1A is communicated with the chamber 1B 1; the water outlet bin 1C is communicated with the lower chamber 1B 2.
When the device is used, the oil-water mixed liquid in the regulating reservoir flows automatically (or is pumped) into the heating chamber through the oil-water mixed liquid inlet, and meanwhile, the steam also enters the heating chamber through the steam inlet (or is electrically heated), so that the oil-water mixed liquid in the heating chamber is heated, and the oil-water mixed liquid is demulsified. And then the demulsified oil-water mixed liquid enters the separation bin from the communication port, after standing for a period of time in the separation bin, oil and water are layered, oil flows out from the oil outlet at the top, and water flows out from the water outlet of the water outlet bin, so that efficient oil-water separation is realized. In addition, the sludge is discharged irregularly by the sludge collecting hopper to remove the sediment accumulated in the sludge collecting hopper.
PREFERRED EMBODIMENTS
Referring to fig. 3, the preferred embodiment is substantially the same as the above-described structure (the structure described in fig. 1 and 2), with the main difference that the lower end of the outlet is further covered with a hydrophobic plate 7, i.e. the oil must first be filtered by the hydrophobic plate 7 before it is discharged from the outlet. The hydrophobic plate is made by forming a hydrophobic plasma coating with the surface tension of 3.0 x 10 < -2 > J/m2 to 7.2 x 10 < -2 > J/m2 on the surface of a non-woven fabric containing polymer fibers, has the functions of oil passing and water stopping, and prevents water from flowing out of an oil outlet, thereby further reducing the water content of the discharged oil.
The plasma surface treatment technology is a technology for improving material performance or endowing new functions by changing the surface of a high polymer material, does not influence the main property of the high polymer material, can modify the physical property and the chemical property of the surface, and processes low-price materials into high-price materials.
The polymer fiber is selected from one of polyamide fiber and polyester fiber, and the average diameter of the polymer fiber is 1-10 mu m. The nonwoven fabric of the present invention contains short fibers and is produced by a method such as needle punching, thermal bonding, hot air bonding, hydroentangling or direct spinning (for example, spunbonding, meltblowing or flash spinning); from the viewpoint of controlling the capillary force, it is more preferable that irregularities be formed on the surface of the polymer fiber of the nonwoven fabric.
The hydrophobic plasma coating layer is formed by plasma vapor deposition of a mixed gas containing a fluorocarbon gas having 1 to 3 carbon atoms and a hydrocarbon gas having 1 to 3 carbon atoms in a volume ratio of 50:50 to 90: 10. The water repellency generally means that the contact angle with water is 140 ° or more, and the material for oil-water separation of the present invention is characterized in that a plasma coating layer, in particular, the oil and water of the present invention is formed on the surface of a nonwoven fabric containing polymer fibers. In order to provide excellent water repellency to the backing material without changing the oil repellency of the surface, the surface tension of the plasma coating must be between the surface tensions of water and oil, and particularly, the surface tension of the plasma coating is preferably 3.0X 10-2J/m2 to 7.2X 10-2J/m2, and in order to provide such surface tension to the plasma coating, the ratio of the fluorocarbon gas having 1 to 3 carbon atoms to the hydrocarbon gas having 1 to 3 carbon atoms is 50: 50. The plasma coating is preferably formed by plasma vapor deposition of a mixed gas containing a volume ratio of 90:10, and more preferably 70:30 to 80: 20.
In the plasma surface treatment technique of the present invention, a plasma surface treatment apparatus using an RF plasma source is preferably used by adjusting the mixing ratio appropriately to adjust the surface tension of the plasma coating, and the plasma surface treatment apparatus can achieve a certain degree of vacuum. More specifically, the plasma surface treatment step includes: i) placing the nonwoven fabric in a chamber and then setting an initial pressure in the chamber to 20 to 30 mTorr; ii) injecting the mixed gas into the chamber; iii) stabilizing the pressure within the chamber at 50 to 150 mTorr; iv) plasma treatment by applying a power of 200 to 600W. The hydrophobic plate of the present invention having the above-described structure has a contact angle with water of 140 ° or more and a measured oil-water separation performance of 98% or more.
The present invention has been described in detail with reference to the embodiments, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (10)
1. The unpowered oil-water separator with the improved structure is characterized by comprising: the heating device comprises a heating bin, a separation bin and a water outlet bin, wherein the heating bin is used for heating liquid in the heating bin, the separation bin is used for layering oil and water, and the heating bin is provided with an oil-water inlet; an oil outlet is formed in the top of the separation bin; the water outlet bin is provided with a water outlet; the height of the oil outlet is greater than that of the water outlet, and the heating bin, the separation bin and the water outlet bin are communicated in sequence.
2. The oil-water separator of claim 1, wherein: an electric heating device is installed in the heating bin.
3. The oil-water separator of claim 1, wherein: the lower part of the heating bin is provided with a steam inlet which is connected with an external steam heating device.
4. The oil-water separator of claim 1, wherein: the middle part of separation storehouse is equipped with the swash plate subassembly, and this swash plate subassembly separates into upper and lower cavity with the separation storehouse, the swash plate subassembly includes a plurality of blocks of swash plate that are parallel to each other and evenly spaced.
5. The oil-water separator according to claim 4, wherein: the heating bin is communicated with the upper chamber; the water outlet bin is communicated with the lower chamber.
6. The oil-water separator according to claim 4, wherein: the vertical direction projection of each inclined plate is positioned on the adjacent inclined plates, and the inclination angle of each inclined plate is 35-45 degrees.
7. The oil-water separator according to claim 4, wherein: the top surface of the separation bin is in an eave shape and comprises a left side inclined cover plate and a right side inclined cover plate which are intersected, and the oil outlet is formed in the intersection of the left side inclined cover plate and the right side inclined cover plate.
8. The oil-water separator according to claim 4, wherein: the lower part of the lower cavity forms a mud collecting hopper, and the bottom surface of the mud collecting hopper is provided with a mud outlet.
9. The oil-water separator of claim 1, wherein: the height of the oil outlet is greater than that of the water outlet.
10. The oil-water separator of claim 1, wherein: the lower end of the oil outlet is provided with a hydrophobic plate, and the hydrophobic plate is made by forming a hydrophobic plasma coating with the surface tension of 3.0 x 10 < -2 > J/m2 to 7.2 x 10 < -2 > J/m2 on the surface of non-woven fabric containing polymer fibers.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011082476.6A CN114307253A (en) | 2020-10-12 | 2020-10-12 | Unpowered oil-water separator with improved structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011082476.6A CN114307253A (en) | 2020-10-12 | 2020-10-12 | Unpowered oil-water separator with improved structure |
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| CN114307253A true CN114307253A (en) | 2022-04-12 |
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| CN202011082476.6A Pending CN114307253A (en) | 2020-10-12 | 2020-10-12 | Unpowered oil-water separator with improved structure |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2073318U (en) * | 1989-08-18 | 1991-03-20 | 杨崇锦 | Automatic oil spraying and collecting device |
| CN101423262A (en) * | 2008-10-22 | 2009-05-06 | 常州江南电力环境工程有限公司 | Air-floated water treating apparatus |
| CN101597109A (en) * | 2009-06-19 | 2009-12-09 | 黄巧玲 | Slag, water, oil separator |
| CN205045849U (en) * | 2015-10-14 | 2016-02-24 | 石家庄市源生园环保有限公司 | Unpowered oil -water clarifier |
| CN105776710A (en) * | 2016-04-27 | 2016-07-20 | 中国汽车工业工程有限公司 | Collection mechanism for oil in concentrated liquid and oily water separator |
| CN213446359U (en) * | 2020-10-12 | 2021-06-15 | 诸暨市天佑环保科技有限公司 | Unpowered oil-water separator with improved structure |
-
2020
- 2020-10-12 CN CN202011082476.6A patent/CN114307253A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2073318U (en) * | 1989-08-18 | 1991-03-20 | 杨崇锦 | Automatic oil spraying and collecting device |
| CN101423262A (en) * | 2008-10-22 | 2009-05-06 | 常州江南电力环境工程有限公司 | Air-floated water treating apparatus |
| CN101597109A (en) * | 2009-06-19 | 2009-12-09 | 黄巧玲 | Slag, water, oil separator |
| CN205045849U (en) * | 2015-10-14 | 2016-02-24 | 石家庄市源生园环保有限公司 | Unpowered oil -water clarifier |
| CN105776710A (en) * | 2016-04-27 | 2016-07-20 | 中国汽车工业工程有限公司 | Collection mechanism for oil in concentrated liquid and oily water separator |
| CN213446359U (en) * | 2020-10-12 | 2021-06-15 | 诸暨市天佑环保科技有限公司 | Unpowered oil-water separator with improved structure |
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Application publication date: 20220412 |