CN111422938B - Cavitation air floatation three-phase separation system - Google Patents
Cavitation air floatation three-phase separation system Download PDFInfo
- Publication number
- CN111422938B CN111422938B CN202010202635.5A CN202010202635A CN111422938B CN 111422938 B CN111422938 B CN 111422938B CN 202010202635 A CN202010202635 A CN 202010202635A CN 111422938 B CN111422938 B CN 111422938B
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- oil
- pipe
- separator body
- separator
- air floatation
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- 238000005191 phase separation Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000002893 slag Substances 0.000 claims abstract description 22
- 238000007667 floating Methods 0.000 claims abstract description 15
- 238000000926 separation method Methods 0.000 claims description 35
- 238000005086 pumping Methods 0.000 claims description 26
- 239000010865 sewage Substances 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 9
- 239000013049 sediment Substances 0.000 abstract description 2
- 239000010802 sludge Substances 0.000 description 17
- 238000007599 discharging Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 238000007790 scraping Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 239000003129 oil well Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005188 flotation Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 235000015110 jellies Nutrition 0.000 description 2
- 239000008274 jelly Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Removal Of Floating Material (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention relates to a cavitation air floatation three-phase separation system, which comprises a cavitation air floatation machine, a three-phase separator and an air floatation system water outlet pipeline, wherein the three-phase separator comprises a separator body with a hollow top opening and a supporting device, a slag inlet pipe and a water outlet pipe are arranged on the separator body, and a mud discharge pipe and a control piece are arranged at the bottom end of the separator body; the outer side of the separator body is provided with a plurality of oil slick observation pipes, the oil slick observation pipes are provided with oil discharge pipes, and the oil discharge pipes are provided with oil discharge valves; the inside of separator body is provided with the oil removal board, and the oil removal board separates the inside of separator body and separates oil removal district and deoiling drainage zone, and the sediment pipe is linked together with the separator oil removal district, and the drain pipe is linked together with deoiling drainage zone, and the drain pipe is linked together with air supporting system outlet conduit. The invention aims to solve the problem that floating oil cannot be thoroughly removed from the whole disposal system in the use process of cavitation air floatation, and simultaneously reduce the sewage flow entering a mud storage tank through an air floatation machine.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a cavitation air floatation three-phase separation system.
Background
The cavitation air floatation machine is a sewage treatment equipment mainly used for removing grease, jelly and solid suspended matters from industrial or urban sewage. The method mainly utilizes a large amount of generated micro-bubbles to form a three-phase mixed system of water, gas and scum, and after the particles adhere to the bubbles, the particles form flocs with apparent density smaller than that of water and float up to the water surface, so that a scum layer is formed and scraped. When the cavitation air floatation works, a negative pressure area exists at the bottom of the air floatation tank, so that wastewater at the bottom of the tank flows back to the aeration section, then returns to the air floatation section, is fully aerated, and has 30% -50% of sewage flowing back. In the slag scraping and discharging device, a large amount of foam and low-density flocculating constituent are gathered at a slag discharging port under the action of a slag scraping machine and a traction chain to spirally push and discharge scum.
In the use process, the medicine adding flocculation and the air flotation are often combined, the coagulant plays a role in demulsification when coagulating impurities in water, and the finely dispersed oil and the emulsified oil can enter a mud storage pond together with scum, jelly and surface sewage from a slag discharge port. During the sludge sedimentation and pressing process, a part of the floating oil is returned to the disposal system through the sludge supernatant and is not completely removed from the disposal system. On the other hand, the air floatation machine can discharge a considerable amount of wastewater through scraping slag and discharging the slag, and excessive wastewater enters a sludge treatment system to increase the sludge treatment pressure and weaken the treatment effect.
In the actual operation of the air flotation machine, about 4% of sewage can enter the subsequent sludge storage pond directly along with the slag scraping process of the air flotation scraping plate every day, and the sewage enters the sludge storage pond without being treated by the subsequent process and returns to the initial sewage collection pond. In contrast, the front-end process treatment of this water is a waste of resources, and the water returned to the primary collection tank is relatively dirty after the later stage of sludge pressing infiltration or sludge clear liquid overflow, and the sludge disposal pressure is increased if the water amount is large.
Disclosure of Invention
The invention aims to provide a cavitation air floatation three-phase separation system, which aims to solve the problem that floating oil cannot be thoroughly removed from the whole disposal system in the use process of cavitation air floatation, and simultaneously reduces the sewage flow entering a mud storage tank through an air floatation machine.
The above object of the present invention is achieved by the following technical solutions:
The three-phase separator comprises a separator body with a hollow top opening and a supporting device for supporting the separator body, wherein a slag inlet pipe and a drain pipe for communicating the inside of the separator body with a slag outlet of the cavitation air floatation machine are arranged on the separator body, and a mud discharge pipe and a control piece for controlling the mud discharge pipe to be opened and closed are arranged at the bottom end of the separator body; the outer side of the separator body is provided with a plurality of transparent oil slick observation pipes which are arranged at intervals along the height direction of the separator body, the oil slick observation pipes are communicated with the inside of the separator body, the oil slick observation pipes are all positioned below the slag inlet pipe, one end of the oil slick observation pipe, which is far away from the separator body, is provided with an oil drain pipe, and an oil drain valve for opening or closing the oil drain pipe is arranged on the oil drain pipe; the inside of separator body is provided with the oil removal board of vertical setting, leave the distance between the bottom of oil removal board and the bottom plate of separator body, the oil removal board separates the inside of separator body and separates separation oil removal district and the deoiling drainage zone that set up side by side, it is linked together with the separator oil removal district to advance the sediment pipe, the drain pipe is linked together with the deoiling drainage zone, the one end that the separator body was kept away from to the drain pipe is linked together with air supporting system outlet conduit.
By adopting the technical scheme, residues discharged from a residue discharge port of the cavitation air floatation machine are sent into a separator body of the three-phase separator through a residue inlet pipe, oil-water residue separation is carried out on the residues in the separator body, after the bottom end of the thickness of floating oil reaches a set position, an oil discharge pipe is opened, the floating oil is separated from the separator body through the oil discharge pipe, and in the standing process, when the liquid level reaches a drain pipe, water in the separator body is discharged through the drain pipe; when the residue is discharged, the mud discharging pipe is opened through the control piece, and the residue is discharged out of the three-phase separator through the mud discharging pipe. The residue discharged from the cavitation air floatation machine is treated by a three-phase separator to remove the floating oil in the residue, and simultaneously, the sewage flow entering the mud storage pool through the air floatation machine is reduced.
The invention is further provided with: the oil separation plate is provided with an oil pumping device, the oil pumping device comprises an oil pump, an oil pumping pipe and an oil feeding pipe, the oil pumping pipe is communicated with an oil inlet of the oil pump, the oil feeding pipe is communicated with an oil discharging port of the oil pump, the oil pumping pipe is positioned in an oil removal drainage area, an oil inlet end of the oil pumping pipe is positioned below the height of the drainage pipe, and an oil outlet end of the oil feeding pipe is communicated with a separation oil separation area.
By adopting the technical scheme, when oil slick occurs in the oil removal drainage area, and the oil pumping pipe stretches into the liquid level of the oil slick, the oil pump is started to pump out the oil from the oil removal drainage area until the oil slick does not exist on the water surface of the oil removal drainage area.
The invention is further provided with: the oil pumping pipe is a hose, and the oil inlet end of the oil pumping pipe is provided with a floater capable of floating on the oil surface.
By adopting the technical scheme, the liquid inlet end of the oil pumping pipe is always positioned below the liquid level of the floating oil when oil pumping is carried out.
The invention is further provided with: the inside of separation oil removal district is located the below of oil delivery pipe's play oil end and is provided with the breakwater of slope setting.
By adopting the technical scheme, the speed that oil extracted from the oil removal drainage area falls into the separation oil separation area is slowed down, so that the stirring of liquid in the separation oil separation area is reduced, and the standing separation effect is ensured.
The invention is further provided with: the bottom plate of the separator body is of a cone bucket structure.
Through adopting above-mentioned technical scheme, through setting up the bottom of separator body into the awl fight structure to be convenient for the residue gathers mud pipe department discharge.
The invention is further provided with: and control valves are respectively arranged on the oil slick observation pipes.
By adopting the technical scheme, different oil slick observation pipes can be selected for oil drainage according to the thickness of the actual oil slick and the height of the oil slick.
In summary, the beneficial technical effects of the invention are as follows:
1. the residue discharged from the cavitation air floatation machine is treated by a three-phase separator, so that the floating oil in the residue is removed, and meanwhile, the sewage flow entering a mud storage pool through the air floatation machine is reduced;
2. by providing the oil pumping device, the oil content in the water discharged from the drain pipe can be ensured.
Drawings
Fig. 1 is a schematic structural view of embodiment 1;
FIG. 2 is a cross-sectional view of a three-phase separator;
Fig. 3 is a schematic structural view of embodiment 2;
FIG. 4 is a schematic view of the structure of the oil pumping apparatus.
In the figure, 1, a cavitation air floatation machine; 2. a three-phase separator; 21. a separator body; 22. support legs; 23. a slag inlet pipe; 24. a drain pipe; 25. a mud pipe; 251. a mud valve; 26. an oil separator; 27. separating the oil separation area; 28. an oil removal drainage zone; 29. a floating oil observation tube; 291. a control valve; 210. an oil drain pipe; 2101. a communicating pipe; 2102. an oil discharge valve; 3. a water outlet pipeline of the air floatation system; 4. a water baffle; 5. an oil pumping device; 51. an oil pump; 52. an oil pumping pipe; 521. a float; 53. and an oil feeding pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1:
Referring to fig. 1 and 2, the invention discloses a cavitation air floatation three-phase separation system, which comprises a cavitation air floatation machine 1, a three-phase separator 2 and an air floatation system water outlet pipeline 3, wherein the air floatation system water outlet pipeline 3 is communicated with a water outlet of the cavitation air floatation machine 1. The water treated by the cavitation air floatation machine 1 is sent into the air floatation system water outlet pipeline 3 through the water outlet of the cavitation air floatation machine 1 to flow out.
The three-phase separator 2 comprises a separator body 21 with an opening at the hollow top inside, and the separator body 21 is of a rectangular structure. A plurality of supporting legs 22 are respectively arranged at four corners of the bottom end of the separator body 21, the supporting legs 22 are vertically arranged, and the tops of the supporting legs 22 are fixedly connected with the separator body 21 by welding. A distance is left between the bottom end of the separator body 21 and the ground by the support legs 22.
A slag inlet pipe 23 and a drain pipe 24 which are communicated with the internal space of the separator body 21 are respectively arranged on a group of side walls which are opposite to the separator body 21, one end of the slag inlet pipe 23 is welded and fixed with the separator body 21, the other end is communicated with a slag outlet of the cavitation air floatation machine 1, and the slag inlet pipe 23 is fixedly connected with the cavitation air floatation machine 1. One end of the drain pipe 24 is welded and fixed with the separator body 21, the other end is communicated with the air floatation system water outlet pipeline 3, and the drain pipe 24 is fixedly connected with the air floatation system water outlet pipeline 3. The height of the air-floating system water outlet pipeline 3 is lower than that of the water outlet pipe 24.
The bottom end of the separator body 21 is provided with a vertical downward sludge discharge pipe 25, and the sludge discharge pipe 25 is communicated with the inside of the separator body 21. The mud pipe 25 is welded and fixed with the separator body 21. A mud valve 251 is installed on the mud pipe 25, and the opening and closing of the mud pipe 25 is controlled by the mud valve 251. The feeding end of the mud discharging valve 251 is fixedly connected with the mud discharging pipe 25 in a sealing way.
The inside that is located separator body 21 is provided with the oil removal board 26 of vertical setting, and welded fastening is between oil removal board 26 and the lateral wall of separator body 21. A distance is left between the bottom end of the oil separator 26 and the bottom plate of the separator body 21. The vertically arranged oil separation plate 26 forms a separated oil separation area 27 and an oil removal drainage area 28 which are arranged side by side in the separator body 21, wherein the slag inlet pipe 23 is communicated with the separated oil separation area 27, and the drainage pipe 24 is communicated with the interior of the oil removal drainage area 28.
A plurality of oil slick observation pipes 29 are arranged on the side wall of the separator body 21 and below the slag inlet pipe 23 at intervals along the height direction of the separator body 21, and the oil slick observation pipes 29 are transparent pipes. The oil slick observation pipe 29 communicates with the inside of the separation oil separation region 27 inside the separator body 21. The oil slick observation tube 29 is fixedly connected with the separator body 21 in a sealing way. A control valve 291 is respectively fixed at a section of the oil slick observation tube 29 far away from the separator body 21, and a liquid inlet end of the control valve 291 is fixedly connected with the oil slick observation tube 29 in a sealing manner. The outside that is located separator body 21 is provided with the oil drain pipe 210 of vertical setting, and oil drain pipe 210 is located the oil slick observation tube 29 and keeps away from the one end outside of separator body 21, and oil drain pipe 210 is provided with communicating pipe 2101 that is linked together with the flowing back end of the control valve 291 on the oil slick observation tube 29 respectively with the position that oil slick observation tube 29 is relative, communicating pipe 2101 and oil drain pipe 210 integrated into one piece.
The oil drain pipe 210 has one open end and one closed end, the closed end of the oil drain pipe 210 is located above, and the open end of the oil drain pipe 210 faces downward. An oil drain valve 2102 is arranged at the bottom end of the oil drain pipe 210, and an oil inlet end of the oil drain valve 2102 is fixedly connected with the oil drain pipe 210 in a sealing manner.
When the residue is separated from the oil and water residues, firstly, water is injected into the separator body 21 through the opening at the top end of the separator body 21, the water surface is higher than the bottom end surface of the oil separation plate 26, the residue in the cavitation air floatation machine 1 is sent into the oil separation area 27 in the separator body 21 through the residue inlet pipe 23 and is kept stand, the residue entering the oil separation area 27 is kept stand for a long time, the residue sinks to the water bottom, and the oil in the residue floats on the water surface, so that the oil and water residues are separated.
The thickness of the oil slick can be observed through the oil slick observation pipes 29 arranged at different heights outside the separator body 21 after long-time standing separation, and when the position of the bottom end of the oil slick reaches the set position, the oil slick is discharged from the oil slick separation area 27 inside the separator body 21 through the oil slick observation pipes 29 and the oil discharge pipe 210. The floating oil can be recovered and treated in a mode of externally connecting a ton box.
When the water level inside the de-oiling and draining area 28 reaches the position of the draining pipe 24, water flows into the air floatation system water outlet pipeline 3 through the draining pipe 24 for draining.
When the sludge is treated, the sludge discharge valve 251 is opened, and the sludge is discharged through the sludge discharge pipe 25.
To facilitate the flow of the residue out of the sludge discharge pipe 25. The bottom plate of the separator body 21 is of a cone hopper structure with a cross-sectional area gradually decreasing from top to bottom, and the sludge discharge pipe 25 is located at the lowest position of the bottom plate of the separator body 21. The bottom plate of the separator body 21 has a cone-shaped structure, so that residues are prevented from being accumulated on the bottom plate of the separator body 21.
Example 2:
Referring to fig. 3 and 4, for a cavitation air-floating three-phase separation system disclosed in the present invention, embodiment 2 differs from embodiment 1 in that: the top that is located the oil removal board 26 is provided with pumping unit 5, and pumping unit 5 includes the oil-well pump 51 of fixing on the oil removal board 26, and the oil inlet department that is located oil-well pump 51 is provided with the oil pumping pipe 52 that is linked together with the oil inlet of oil-well pump 51, and oil pumping pipe 52 and the oil inlet seal fixed connection of oil-well pump 51. The oil outlet of the oil pump 51 is provided with an oil delivery pipe 53 communicated with the oil outlet of the oil pump 51, and the oil delivery pipe 53 is fixedly connected with the oil outlet of the oil pump 51 in a sealing way.
The oil suction pipe 52 is positioned inside the oil removal drainage area 28 inside the separator body 21 by using a hose, and the oil inlet end of the oil suction pipe 52 is positioned below the height of the drain pipe 24. A float 521 capable of floating on the oil surface is fixed at the oil inlet end of the oil suction pipe 52, and a distance is left between the end surface of the oil inlet end of the oil suction pipe 52 and the float 521. When the float 521 floats on the oil surface, the oil pumping pipe 52 extends below the oil surface. The oil outlet end of the oil feed pipe 53 communicates with the interior of the separation oil separation region 27 inside the separator body 21.
When oil slick occurs on the water surface inside the oil removal and drainage area 28, the oil located inside the water surface of the oil removal and drainage area 28 is extracted through the oil extraction pipe 52 and sent to the inside of the separation oil separation area 27 through the oil feed pipe 53.
The water baffle 4 which is obliquely arranged is arranged below the oil outlet end of the oil delivery pipe 53 and positioned in the oil separation area 27, and the water baffle 4 is fixedly connected with the oil separation plate 26. By the water baffle 4, the speed of the oil water flowing out of the oil feed pipe 53 is slowed down, and the oil water slowly flows into the oil separation area 27.
The embodiments of the present invention are all preferred embodiments of the present invention, and are not intended to limit the scope of the present invention in this way, therefore: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.
Claims (3)
1. The utility model provides a cavitation air supporting three-phase separation system, includes cavitation air supporting machine (1), three-phase separator (2) and air supporting system outlet pipe way (3), air supporting system outlet pipe way (3) are linked together its characterized in that with the outlet of cavitation air supporting machine (1): the three-phase separator (2) comprises a separator body (21) with a hollow top opening and a supporting device for supporting the separator body (21), wherein a slag inlet pipe (23) and a drain pipe (24) for communicating the interior of the separator body (21) with a slag outlet of the cavitation air floatation machine (1) are arranged on the separator body (21), and a mud discharge pipe (25) and a control piece for controlling the mud discharge pipe (25) to be opened and closed are arranged at the bottom end of the separator body (21); the oil-water separator is characterized in that a plurality of transparent oil-water observing pipes (29) are arranged on the outer side of the separator body (21) at intervals along the height direction of the separator body (21), the oil-water observing pipes (29) are communicated with the inside of the separator body (21), the oil-water observing pipes (29) are all positioned below the slag inlet pipe (23), an oil drain pipe (210) is arranged at one end, far away from the separator body (21), of the oil-water observing pipes (29), and an oil drain valve (2102) for opening or closing the oil drain pipe (210) is arranged on the oil drain pipe (210); the inside of the separator body (21) is provided with an oil separation plate (26) which is vertically arranged, a distance is reserved between the bottom end of the oil separation plate (26) and the bottom plate of the separator body (21), the oil separation plate (26) separates the inside of the separator body (21) into a separated oil separation area (27) and an oil removal drainage area (28) which are arranged side by side, the slag inlet pipe (23) is communicated with the oil separation area of the separator, the drain pipe (24) is communicated with the oil removal drainage area (28), one end of the drain pipe (24) far away from the separator body (21) is communicated with an air floatation system water outlet pipeline (3), an oil pumping device (5) is arranged on the oil separation plate (26), the oil pumping device (5) comprises an oil pump (51), an oil pumping pipe (52) and an oil delivery pipe (53), the oil inlet of the oil pumping pipe (52) is communicated with the oil inlet of the oil pump (51), the oil delivery pipe (53) is communicated with the oil outlet of the oil removal area (51), the water drainage pipe (52) is positioned in the oil removal area (28), the oil delivery pipe (52) is positioned at the lower end of the oil pumping pipe (52) which is communicated with the oil delivery pipe (27), the oil inlet end of the oil pumping pipe (52) is provided with a floater (521) capable of floating on the oil surface, and a water baffle (4) which is obliquely arranged is arranged below the oil outlet end of the oil feeding pipe (53) in the oil separating and separating area (27).
2. A cavitation air floatation three-phase separation system according to claim 1, wherein: the bottom plate of the separator body (21) is of a cone bucket structure.
3. A cavitation air floatation three-phase separation system according to claim 1, wherein: control valves (291) are respectively arranged on the oil slick observation pipes (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010202635.5A CN111422938B (en) | 2020-03-20 | 2020-03-20 | Cavitation air floatation three-phase separation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010202635.5A CN111422938B (en) | 2020-03-20 | 2020-03-20 | Cavitation air floatation three-phase separation system |
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| CN111422938A CN111422938A (en) | 2020-07-17 |
| CN111422938B true CN111422938B (en) | 2024-08-30 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109019738A (en) * | 2018-09-25 | 2018-12-18 | 哈尔滨北方环保工程有限公司 | Air floatation machine dross separation apparatus in a kind of tobacco processing sewage disposal process system |
| CN212127586U (en) * | 2020-03-20 | 2020-12-11 | 北京生态岛科技有限责任公司 | Cavitation air flotation three-phase separation system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08168753A (en) * | 1994-12-20 | 1996-07-02 | Hiwada Denshi Kk | Treatment of sewage |
| CN1243589C (en) * | 2003-08-15 | 2006-03-01 | 中国科学院沈阳应用生态研究所 | Oil-water separator for treating oil-containing waste water |
| KR101390821B1 (en) * | 2012-04-13 | 2014-05-08 | 삼성중공업 주식회사 | Wastewater separating apparatus for vessel |
| CN107619122B (en) * | 2017-09-22 | 2023-12-19 | 宁波创蓝环境科技有限公司 | Restaurant sewage treatment equipment with oil collecting and backflow device and working method thereof |
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2020
- 2020-03-20 CN CN202010202635.5A patent/CN111422938B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109019738A (en) * | 2018-09-25 | 2018-12-18 | 哈尔滨北方环保工程有限公司 | Air floatation machine dross separation apparatus in a kind of tobacco processing sewage disposal process system |
| CN212127586U (en) * | 2020-03-20 | 2020-12-11 | 北京生态岛科技有限责任公司 | Cavitation air flotation three-phase separation system |
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