CN113480039A - Oil-water separation device and separation method - Google Patents
Oil-water separation device and separation method Download PDFInfo
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- CN113480039A CN113480039A CN202110801128.8A CN202110801128A CN113480039A CN 113480039 A CN113480039 A CN 113480039A CN 202110801128 A CN202110801128 A CN 202110801128A CN 113480039 A CN113480039 A CN 113480039A
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- slag
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 238000000926 separation method Methods 0.000 title claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 61
- 238000005188 flotation Methods 0.000 claims abstract description 35
- 239000010865 sewage Substances 0.000 claims abstract description 35
- 239000002893 slag Substances 0.000 claims abstract description 32
- 238000002347 injection Methods 0.000 claims abstract description 31
- 239000007924 injection Substances 0.000 claims abstract description 31
- 238000007790 scraping Methods 0.000 claims abstract description 24
- 238000007667 floating Methods 0.000 claims abstract description 22
- 239000000701 coagulant Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 7
- 239000013049 sediment Substances 0.000 claims description 6
- 239000005341 toughened glass Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 description 9
- 239000000243 solution Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
- Removal Of Floating Material (AREA)
Abstract
The invention discloses an oil-water separation device and a separation method, wherein the oil-water separation device comprises an air floating box body, an air releaser, an air compressor, a lifting frame body, a scraping strip, a slag guide funnel, a filter frame and a lifting mechanism; the oil-water separation method comprises the following steps: opening a water injection valve to inject clean water into the air flotation tank body; starting an air compressor and checking the working state of an air releaser; adjusting the pH value of the sewage to 7.5-8.5, adding a coagulant and a coagulant aid into the sewage, and uniformly stirring; opening a liquid inlet valve to pump a certain amount of sewage into the air floating box body, and continuously operating an air releaser to release air for 15-25 min; opening a liquid discharge valve to discharge a part of liquid in the air flotation tank body to a clean water tank; and scraping slag once for the liquid in the air flotation tank body every 2-3 hours. The oil-water separator has the advantages of reasonable structural design, stable operation, reliable performance and high automation degree, can effectively realize oil-water separation in oily sewage, realizes standard discharge of sewage, and avoids pollution to the environment.
Description
Technical Field
The invention relates to the technical field of industrial cleaning, in particular to an oil-water separation device and a separation method.
Background
The cleaning machine in the industrial field is mainly used for cleaning and drying workpieces with greasy dirt or dirt attached to the surfaces, the greasy dirt and the dirt on the surfaces of the workpieces are wetted, softened and separated from the workpieces under the action of water flow sprayed by the cleaning machine in the cleaning process, and then dirt particles are taken away by the cleaning liquid, so that the cleaning purpose is achieved. The used cleaning solution contains a large amount of grease and oil stains, and the oil-water mixed solution can only be treated as sewage if the oil-water mixed solution cannot be effectively separated, so that resources are wasted, and the environment is polluted.
Disclosure of Invention
The invention provides an oil-water separation device and a separation method for overcoming the defects of the prior art, which can separate grease and oil stains from cleaning fluid and avoid the environment pollution.
In order to achieve the purpose, the invention provides the following technical scheme:
an oil-water separation device comprises an air floating box body, an air release device and an air compressor, wherein the air release device is arranged inside the air floating box body, the air compressor is arranged on one side of the air floating box body, the air inlet end of the air release device is connected with the air outlet end of the air compressor through a pipeline, a water injection pipe, a liquid inlet pipe and a liquid discharge pipe are arranged on the side surface of the air floating box body, and a water injection valve, a liquid inlet valve and a liquid discharge valve are respectively arranged on the water injection pipe, the liquid inlet pipe and the liquid discharge pipe; the oil-water separation device also comprises a lifting frame body, a scraping strip, a slag-guiding funnel, a filter frame and a lifting mechanism; the slag guiding hopper comprises a surrounding baffle part, a slag guiding part arranged at the lower end of the surrounding baffle part and a drain pipe arranged at the lower end of the slag guiding part, the surrounding baffle part, the slag guiding part and the drain pipe are sequentially communicated, and a drain valve is arranged on the drain pipe; the filter frame is arranged in the slag-guiding funnel, the periphery of the filter frame is connected with the inner wall of the enclosing part in a seamless mode, and a filter screen is arranged at the bottom of the filter frame; the lifting frame body is arranged around the slag-guiding funnel in a surrounding mode, the height of the lower end of the lifting frame body is lower than that of the top end of the slag-guiding funnel, an overflow channel is arranged between the slag-guiding funnel and the inner wall of the lifting frame body, a plurality of connecting rods are arranged in the overflow channel, and the slag-guiding funnel is connected with the inner wall of the lifting frame body through the connecting rods; the lifting frame body is arranged above the air flotation tank body, the lower end of the lifting frame body is provided with a scraping strip, the edge of the scraping strip is in contact with the inner wall of the air flotation tank body, and the edge of the scraping strip is provided with a plurality of notches penetrating through the upper surface and the lower surface of the scraping strip; the lifting mechanism is fixed with the air flotation tank body, the upper end of the lifting frame body is connected with the lifting mechanism, and the lifting mechanism drives the lifting frame body to move up and down in the air flotation tank body.
Further, elevating system comprises two cylinders, two cylinders respectively with two parallel side of air supporting box fixed, the cylinder passes through the trachea and is connected with the air compressor machine, is provided with the solenoid valve that is used for controlling the cylinder is flexible on the trachea between cylinder and the air compressor machine, the upper end of lifting frame and the telescopic link fixed connection of cylinder.
Further, the outside of air supporting box is provided with the controller, water injection valve, feed liquor valve and flowing back valve are the automatically controlled valve, the solenoid valve of air compressor machine, water injection valve, feed liquor valve, flowing back valve and control cylinder all with controller electric connection.
Furthermore, the scraping strip is made of rubber, the scraping strip comprises an installation part and an inclined part which are integrally formed, the installation part is fixedly connected with the lower end of the lifting frame body through a bolt, and one side of the inclined part, which is far away from the lifting frame body, inclines downwards; and a steel plate is arranged in the mounting part.
Furthermore, a flow control valve and a pressure gauge are arranged on a pipeline connected between the air releaser and the air compressor.
Furthermore, the side of the air flotation tank body is provided with an observation port, colorless and transparent toughened glass is embedded in the observation port, and the edge of the toughened glass is connected with the air flotation tank body in a sealing manner.
The invention also provides an oil-water separation method using the oil-water separation device, which is characterized by comprising the following steps: step one, opening a water injection valve, injecting a certain amount of clear water into the air flotation tank body through a water injection pipe, and closing the water injection valve after water injection is finished; starting the air compressor and checking the working state of the air releaser; if a large amount of micro bubbles appear in the water in the air flotation tank body and the clear water turns to be milk white, the air release device can be determined to work normally; adjusting the pH value of the sewage to 7.5-8.5 in a sewage pretreatment tank, adding a coagulant and a coagulant aid into the sewage according to the water quality condition of the sewage, and uniformly stirring; opening a liquid inlet valve, pumping a certain amount of sewage into the air floating box body from a liquid inlet pipe, and continuously working an air releaser to release air for 15-25 min; opening a liquid discharge valve, and discharging a part of liquid in the air floatation tank body to a clean water tank; repeating the third step, the fourth step and the fifth step to realize continuous purification treatment of the oily sewage; the in-process of water oil separating device operation, once scrape the sediment every 2 ~ 3h to the liquid in the air supporting box, will float the dross of scraping above the liquid level and strike off, specifically scrape the sediment process and be: the lifting frame body and the slag guiding funnel are driven by the lifting mechanism to descend until the top end of the slag guiding funnel is immersed between 0-20 mm below the liquid level in the air floatation box body, then the lifting frame body and the slag guiding funnel are lifted by the lifting mechanism, the drain valve is opened after the bottom of the slag guiding funnel leaves the liquid level, water in the slag guiding funnel is discharged into the air floatation box body, then the filter frame is taken out, scum in the filter frame is removed, and finally oil-water separation of oily sewage is realized.
Compared with the prior art, the oil-water separation device has the advantages of reasonable structural design, stable operation and reliable performance, can effectively realize oil-water separation in oily sewage, improves the oil-water separation effect, is beneficial to realizing standard discharge of factory sewage, avoids polluting the environment, automatically controls water supply and drainage and the lifting of the lifting mechanism in the whole oil-water separation process by the controller, has higher automation degree and is very convenient to use. In addition, the separated scum can be subsequently recycled, so that the waste of resources is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a schematic structural view of a slag-guiding hopper and a filter frame according to the present invention;
fig. 3 is a partial enlarged view at i in fig. 1.
The reference numerals are explained below:
in the figure: 1. a liquid discharge pipe; 2. a drain valve; 3. an air flotation tank body; 301. a viewing port; 4. a water injection pipe; 5. a water injection valve; 6. a lifting mechanism; 7. a lifting frame body; 8. a filter frame; 9. a slag-guiding hopper; 901. a surrounding baffle part; 902. a slag-guiding part; 903. a drain pipe; 10. filtering with a screen; 11. a drain valve; 12. a liquid inlet pipe; 13. a liquid inlet valve; 14. an air compressor; 15. a gas releasing device; 16. scraping the strips; 1601. an installation part; 1602. an inclined portion; 1603. a notch; 1604. a steel plate; 17. a controller; 18. a flow control valve; 19. a pressure gauge; 20. and (4) tempering the glass.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1-3, the invention provides an oil-water separation device, which comprises an air floating box body 3, an air releaser 15 arranged inside the air floating box body 3 and an air compressor 14 arranged on one side of the air floating box body 3, wherein the air inlet end of the air releaser 15 is connected with the air outlet end of the air compressor 14 through a pipeline, the side surface of the air floating box body 3 is provided with a water injection pipe 4, a liquid inlet pipe 12 and a liquid discharge pipe 1, and the water injection pipe 4, the liquid inlet pipe 12 and the liquid discharge pipe 1 are respectively provided with a water injection valve 5, a liquid inlet valve 13 and a liquid discharge valve 2. The oil-water separation device also comprises a lifting frame body 7, a scraping strip 16, a slag-guiding funnel 9, a filter frame 8 and a lifting mechanism 6; the slag-guiding funnel 9 comprises a surrounding baffle part 901, a slag-guiding part 902 arranged at the lower end of the surrounding baffle part 901 and a drain pipe 903 arranged at the lower end of the slag-guiding part 902, wherein the surrounding baffle part 901, the slag-guiding part 902 and the drain pipe 903 are sequentially communicated, and the drain pipe 903 is provided with a drain valve 11; the filter frame 8 is arranged in the slag-guiding funnel 9, the periphery of the filter frame 8 is seamlessly connected with the inner wall of the enclosing part 901, and the bottom of the filter frame 8 is provided with a filter screen 10; the lifting frame body 7 is arranged around the slag guiding funnel 9 in a surrounding mode, the height of the lower end of the lifting frame body 7 is lower than the height of the top end of the slag guiding funnel 9, an overflow channel is arranged between the slag guiding funnel 9 and the inner wall of the lifting frame body 7, a plurality of connecting rods are arranged in the overflow channel, and the slag guiding funnel 9 is connected with the inner wall of the lifting frame body 7 through the connecting rods; the lifting frame body 7 is arranged above the air flotation tank body 3, the lower end of the lifting frame body 7 is provided with a scraping strip 16, the edge of the scraping strip 16 is in contact with the inner wall of the air flotation tank body 3, and the edge of the scraping strip 16 is provided with a plurality of notches 1603 which penetrate through the upper surface and the lower surface of the scraping strip 16; the lifting mechanism 6 is fixed with the air flotation tank body 3, the upper end of the lifting frame body 7 is connected with the lifting mechanism 6, and the lifting frame body 7 is driven by the lifting mechanism 6 to move up and down in the air flotation tank body 3.
When the device is used, clean water is firstly supplied into the air flotation tank body 3 through the water injection pipe 4, the liquid inlet pipe 12 is used for injecting sewage to be treated into the air flotation tank body 3, and the liquid discharge pipe 1 is used for discharging the treated sewage from the air flotation tank body 3. .
In the invention, the lifting mechanism 6 consists of two cylinders, the two cylinders are respectively fixed with two parallel side surfaces of the air flotation tank body 3, the cylinders are connected with the air compressor 14 through air pipes, the air pipes between the cylinders and the air compressor 14 are provided with electromagnetic valves for controlling the expansion and contraction of the cylinders, and the upper end of the lifting frame is fixedly connected with the expansion and contraction rods of the cylinders. The outside of the air supporting box body 3 is provided with a controller 17 (the controller 17 is a PLC, the model of which can be DVP60ES200R), the water injection valve 5, the liquid inlet valve 13 and the liquid discharge valve 2 are all electric control valves, and the air compressor 14, the water injection valve 5, the liquid inlet valve 13, the liquid discharge valve 2 and the electromagnetic valve of the control cylinder are all electrically connected with the controller 17.
In the invention, the scraper bar 16 is made of rubber, the scraper bar 16 comprises an installation part 1601 and an inclined part 1602 which are integrally formed, the installation part 1601 is fixedly connected with the lower end of the lifting frame body 7 through a bolt, and one side of the inclined part 1602, which is far away from the lifting frame body 7, is inclined downwards; in order to ensure sufficient structural strength of the mounting portion 1601, a steel plate 1604 is provided inside the mounting portion 1601.
In the invention, a flow control valve 18 and a pressure gauge 19 are arranged on a pipeline connected between the air releaser 15 and the air compressor 14. Viewing aperture 301 has been seted up to the side of air supporting box 3, viewing aperture 301 embedded be equipped with colorless transparent toughened glass 20, sealing connection between toughened glass 20's the edge and the air supporting box 3.
The invention also provides an oil-water separation method using the oil-water separation device, which comprises the following steps:
step one, opening a water injection valve 5, injecting a certain amount of clear water into the air flotation tank body 3 through a water injection pipe 4, and closing the water injection valve 5 after water injection is finished; step two, starting the air compressor 14 and checking the working state of the air releaser 15; if a large amount of micro bubbles appear in the water in the air floating box body 3 and the clear water turns to be milk white, the gas releaser 15 can be determined to work normally; adjusting the pH value of the sewage to 7.5-8.5 in a sewage pretreatment tank, adding a coagulant and a coagulant aid into the sewage according to the water quality condition of the sewage, and uniformly stirring; step four, opening a liquid inlet valve 13, pumping a certain amount of sewage into the air flotation tank body 3 from a liquid inlet pipe 12, continuously working an air releaser 15 for air release for 15-25 min to purify the sewage, controlling the air supply pressure of an air compressor 14 to be 0.3-0.5 MPa in the period, and in the pressure range, the higher the pressure is, the higher the generated micro-bubble density is; step five, after the sewage purification in the step four is finished, opening the liquid discharge valve 2, discharging a part of liquid in the air flotation tank body 3 to a clean water tank, and keeping the volume of the liquid reserved in the air flotation tank body 3 consistent with the volume of the clean water injected in the step one; repeating the third step, the fourth step and the fifth step to realize continuous purification treatment of the oily sewage; the in-process of oil water separator operation, once scrape the sediment every 2 ~ 3h to the liquid in the air supporting box body 3, will float the dross of scraping above the liquid level and strike off, specifically scrape the sediment process and be: after the fourth step is finished and before the fifth step is started, the lifting mechanism 6 drives the lifting frame body 7 and the slag guiding funnel 9 to descend until the top end of the slag guiding funnel 9 is immersed between 0mm and 20mm below the liquid level in the air floating box body 3; in the process that the lifting frame body 7 and the slag guide funnel 9 descend, due to the fact that the density of scum is low, the scum is gathered in the area between the lifting frame body 7 and the slag guide portion 902 and in an overflow channel under the action of buoyancy, the inclined portion 1602 and the funnel-shaped slag guide portion 902, at this time, a thick scum layer is formed in the area between the lifting frame body 7 and the surrounding portion 901 and the slag guide portion 902, so that the scum is taken out favorably, the scum floating on the liquid level flows into the filter frame 8 after the top of the surrounding portion 901 is immersed below the liquid level, water permeates into a space between the filter frame 8 and the slag guide funnel 9 under the filtering action of the filter screen 10, and the scum is accumulated in the filter frame 8; the slot 1603 is used for enabling the liquid to flow into the area between the lifting frame body 7 and the air flotation tank body 3, and meanwhile, the excessive floating slag cannot enter the area; then the lifting frame body 7 and the slag-guiding funnel 9 are lifted through the lifting mechanism 6, the notch 1603 on the inclined part 1602 of the lifting frame body 7 in the lifting process is used for enabling liquid between the lifting frame body 7 and the air flotation tank body 3 to flow back into the air flotation tank body 3, the drain valve 11 is opened after the bottom of the slag-guiding funnel 9 leaves the liquid level, water in the slag-guiding funnel 9 is discharged into the air flotation tank body 3, then the filter frame 8 is taken out, scum in the filter frame 8 is removed, and finally oil-water separation of oily sewage is achieved.
The oil-water separation device has the advantages of reasonable structural design, stable operation and reliable performance, can effectively realize oil-water separation in oily sewage, improves the oil-water separation effect, is beneficial to realizing standard discharge of factory sewage, avoids causing pollution to the environment, automatically controls water supply and drainage and lifting of the lifting mechanism 6 in the whole oil-water separation process by the controller 17, has higher automation degree and is very convenient to use. In addition, the separated scum can be subsequently recycled, so that the waste of resources is avoided.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (7)
1. An oil-water separation device comprises an air floating box body, an air releasing device arranged inside the air floating box body and an air compressor arranged on one side of the air floating box body, wherein the air inlet end of the air releasing device is connected with the air outlet end of the air compressor through a pipeline, a water injection pipe, a liquid inlet pipe and a liquid discharge pipe are arranged on the side surface of the air floating box body, and a water injection valve, a liquid inlet valve and a liquid discharge valve are respectively arranged on the water injection pipe, the liquid inlet pipe and the liquid discharge pipe; the slag guiding hopper comprises a surrounding baffle part, a slag guiding part arranged at the lower end of the surrounding baffle part and a drain pipe arranged at the lower end of the slag guiding part, the surrounding baffle part, the slag guiding part and the drain pipe are sequentially communicated, and a drain valve is arranged on the drain pipe; the filter frame is arranged in the slag-guiding funnel, the periphery of the filter frame is connected with the inner wall of the enclosing part in a seamless mode, and a filter screen is arranged at the bottom of the filter frame; the lifting frame body is arranged around the slag-guiding funnel in a surrounding mode, the height of the lower end of the lifting frame body is lower than that of the top end of the slag-guiding funnel, an overflow channel is arranged between the slag-guiding funnel and the inner wall of the lifting frame body, a plurality of connecting rods are arranged in the overflow channel, and the slag-guiding funnel is connected with the inner wall of the lifting frame body through the connecting rods; the lifting frame body is arranged above the air flotation tank body, the lower end of the lifting frame body is provided with a scraping strip, the edge of the scraping strip is in contact with the inner wall of the air flotation tank body, and the edge of the scraping strip is provided with a plurality of notches penetrating through the upper surface and the lower surface of the scraping strip; the lifting mechanism is fixed with the air flotation tank body, the upper end of the lifting frame body is connected with the lifting mechanism, and the lifting mechanism drives the lifting frame body to move up and down in the air flotation tank body.
2. The oil-water separator according to claim 1, wherein: the lifting mechanism comprises two cylinders, the two cylinders are fixed with two parallel sides of the air flotation box body respectively, the cylinders are connected with the air compressor through air pipes, electromagnetic valves used for controlling the expansion of the cylinders are arranged on the air pipes between the cylinders and the air compressor, and the upper end of the lifting frame is fixedly connected with the telescopic rods of the cylinders.
3. The oil-water separator according to claim 2, wherein: the outside of air supporting box body is provided with the controller, water injection valve, feed liquor valve and flowing back valve are the automatically controlled valve, the solenoid valve of air compressor machine, water injection valve, feed liquor valve, flowing back valve and control cylinder all with controller electric connection.
4. The oil-water separator according to any one of claims 1 to 3, wherein: the scraping strip is made of rubber, the scraping strip comprises an installation part and an inclined part which are integrally formed, the installation part is fixedly connected with the lower end of the lifting frame body through a bolt, and one side of the inclined part, which is far away from the lifting frame body, inclines downwards; and a steel plate is arranged in the mounting part.
5. The oil-water separator according to claim 4, wherein: and a flow control valve and a pressure gauge are arranged on a pipeline connected between the air releaser and the air compressor.
6. The oil-water separator according to claim 4, wherein: the side of the air-floating box body is provided with an observation port, colorless and transparent toughened glass is embedded in the observation port, and the edge of the toughened glass is hermetically connected with the air-floating box body.
7. An oil-water separation method using the oil-water separation device according to any one of claims 1 to 6, characterized by comprising the steps of: step one, opening a water injection valve, injecting a certain amount of clear water into the air flotation tank body through a water injection pipe, and closing the water injection valve after water injection is finished; starting the air compressor and checking the working state of the air releaser; if a large amount of micro bubbles appear in the water in the air flotation tank body and the clear water turns to be milk white, the air release device can be determined to work normally; adjusting the pH value of the sewage to 7.5-8.5 in a sewage pretreatment tank, adding a coagulant and a coagulant aid into the sewage according to the water quality condition of the sewage, and uniformly stirring; opening a liquid inlet valve, pumping a certain amount of sewage into the air floating box body from a liquid inlet pipe, and continuously working an air releaser to release air for 15-25 min; opening a liquid discharge valve, and discharging a part of liquid in the air floatation tank body to a clean water tank; repeating the third step, the fourth step and the fifth step to realize continuous purification treatment of the oily sewage; the in-process of water oil separating device operation, once scrape the sediment every 2 ~ 3h to the liquid in the air supporting box, will float the dross of scraping above the liquid level and strike off, specifically scrape the sediment process and be: the lifting frame body and the slag guiding funnel are driven by the lifting mechanism to descend until the top end of the slag guiding funnel is immersed between 0-20 mm below the liquid level in the air floatation box body, then the lifting frame body and the slag guiding funnel are lifted by the lifting mechanism, the drain valve is opened after the bottom of the slag guiding funnel leaves the liquid level, water in the slag guiding funnel is discharged into the air floatation box body, then the filter frame is taken out, scum in the filter frame is removed, and finally oil-water separation of oily sewage is realized.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110801128.8A CN113480039A (en) | 2021-07-15 | 2021-07-15 | Oil-water separation device and separation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110801128.8A CN113480039A (en) | 2021-07-15 | 2021-07-15 | Oil-water separation device and separation method |
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| CN202110801128.8A Pending CN113480039A (en) | 2021-07-15 | 2021-07-15 | Oil-water separation device and separation method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2356860B (en) * | 1999-08-16 | 2004-06-16 | Peter Inatius Swan | Flotation system and elements relative thereto |
| CN106277151A (en) * | 2016-10-17 | 2017-01-04 | 西安建筑科技大学 | A kind of radial direction combines multistage ozone air-float device |
| CN108862450A (en) * | 2018-09-19 | 2018-11-23 | 深圳市乐业科技有限公司 | A kind of air-floating apparatus convenient for collecting dross |
| CN209974443U (en) * | 2019-04-15 | 2020-01-21 | 辽宁佰健环保科技有限公司 | Compact oil-water separation device for wastewater treatment after soda particle cleaning |
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2021
- 2021-07-15 CN CN202110801128.8A patent/CN113480039A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2356860B (en) * | 1999-08-16 | 2004-06-16 | Peter Inatius Swan | Flotation system and elements relative thereto |
| CN106277151A (en) * | 2016-10-17 | 2017-01-04 | 西安建筑科技大学 | A kind of radial direction combines multistage ozone air-float device |
| CN108862450A (en) * | 2018-09-19 | 2018-11-23 | 深圳市乐业科技有限公司 | A kind of air-floating apparatus convenient for collecting dross |
| CN209974443U (en) * | 2019-04-15 | 2020-01-21 | 辽宁佰健环保科技有限公司 | Compact oil-water separation device for wastewater treatment after soda particle cleaning |
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Application publication date: 20211008 |