CN214192861U - Oily water treatment device - Google Patents
Oily water treatment device Download PDFInfo
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- CN214192861U CN214192861U CN202023250490.0U CN202023250490U CN214192861U CN 214192861 U CN214192861 U CN 214192861U CN 202023250490 U CN202023250490 U CN 202023250490U CN 214192861 U CN214192861 U CN 214192861U
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Abstract
The utility model discloses an oily water treatment device, which belongs to the technical field of oily water treatment and solves the problem that the oily water treatment device in the prior art can not meet the treatment of oily water in an airport oil depot, and comprises an oil separation tank for receiving oily water and a water inlet connected with an air flotation device, wherein the water inlet of the air flotation device is also connected with a dosing system; the utility model discloses an oil removal, air supporting, flocculation, whirl and multicycle are handled, effectively get rid of the particle impurity in the airport greasy dirt aquatic, improve the separation effect in the greasy dirt aquatic greatly.
Description
Technical Field
The utility model belongs to the technical field of oily water treatment, concretely relates to oily water treatment facilities.
Background
With the increasing demand of the product oil, the scale of the product oil depot is gradually enlarged. According to the requirement of environmental protection, oily sewage in the operation process of the oil depot is collected, treated and discharged after reaching the standard. The scale of the oil depot for the airport is large, the oil-containing sewage quantity is more than that of a common oil depot, the impurity content of the oil-containing sewage is high, and whether the oil-containing sewage can be effectively treated or not for the oil depot for the airport restricts the development of the oil depot to a certain extent.
The prior art is relatively simple aiming at the oily water treatment device (system) of a common oil depot, can not treat airport oily water with large complex amount, and in order to ensure that the sewage discharge of the oil depot conforms to the national standard and does not influence the normal oil loading and unloading operation of the oil depot, the prior oily water treatment device is necessary to be improved, and the oily water treatment device (system) conforming to the airport oil depot is designed.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model aims to provide an oily water treatment device, which solves the problem that the oily water treatment device in the prior art can not meet the oily water treatment condition of an airport oil depot.
The utility model discloses the technical scheme who adopts does:
the utility model provides a oily water treatment facilities, including the oil interceptor that is used for accepting oily water and, one side and the water inlet of air supporting device of oil interceptor are connected, the water inlet of air supporting device still is connected with charge system, one side that the oil interceptor was kept away from to the air supporting device is provided with the delivery port, the delivery port of air supporting device is connected with multistage whirl device, multistage whirl device's sand setting mouth is connected with the holding vessel, charge system, air supporting device, multistage whirl device all are connected to the escape canal through circulating pipe, the escape canal with the oil interceptor intercommunication.
By adopting the above scheme, oily water enters the oil separation tank, carry out primary oil, sewage separation in the oil separation tank, improve oil-water separation effect, extract the sewage of oil separation tank bottom and the liquid medicine in the charge system to the air supporting device simultaneously, flocculate, deposit the large granule impurity in the greasy dirt aquatic, be convenient for follow-up further air supporting oily water, improve oil-water separation effect, after the air supporting device is handled, the oil separation of air supporting device upper surface is taken out, extract the sewage of air supporting device bottom and carry out the whirl in multistage whirl device, further separate sewage, the supernatant that the whirl obtained is the little crude oil of final separation, the waste water that produces in the whole process and the clean partial sewage that does not handle all flow back to the oil separation tank, carry out the circulation treatment, improve oily water's treatment effect, the utility model discloses a oil separation, air supporting, flocculation, whirl and multicycle treatment, effectively remove the particle impurities in the airport oil wastewater and greatly improve the separation effect in the oil wastewater.
Preferably, the oil separation tank comprises a tank body, first baffle plates which are staggered with each other are arranged in the tank body, one side of each first baffle plate is fixedly connected with the tank body, a gap is formed between the other side of each first baffle plate and the tank body, a sewage inlet is formed in one side of the tank body, and the other side of the tank body is connected with a water inlet of the air floatation device. Adopt this preferred scheme, be provided with first baffle crisscross each other in the oil interceptor, the oil removal route of extension oily water improves oily water treatment efficiency.
Preferably, the dosing system includes two dosing barrels, and the play medicine mouth of each dosing barrel passes through the liquid medicine delivery pump and is connected with the water inlet of air supporting device, all is provided with agitating unit in each dosing barrel, and the drain of each dosing barrel all is connected to through circulating pipe the escape canal. Adopt this preferred scheme, the medicine system includes the medicine bucket that adds of two parallelly connected settings, according to the impurity condition of oily water or the content condition of oily water, and the step configuration improves the flocculation effect.
Preferably, the air supporting device is including the stirring pond, air supporting pond and the sedimentation tank that set gradually, the water inlet sets up one side of stirring pond, the water inlet of air supporting device is located the top of stirring pond, the opposite side of stirring pond pass through the second baffle with the air supporting pond is connected, the stirring pond with the sedimentation tank passes through the third baffle and connects, the water inlet of air supporting device is located the bottom of sedimentation tank, the bottom of second baffle has the opening, the top of air supporting pond is provided with the oil scraping device, and the bottom of air supporting pond is provided with the collector pipe, the one end of collector pipe with the third baffle intercommunication, the bottom of stirring pond, air supporting pond and sedimentation tank all is provided with the drain, the drain passes through circulating water pipe and is connected with the escape canal. Adopt this preferred scheme, the air supporting device is including the stirring pond, the flocculation of liquid medicine and greasy dirt aquatic that the stirring pond is arranged in the charge system, carry out flocculation with granule impurity or oil grain in the greasy dirt aquatic, make it float to the sewage upper surface, realize the separation of granule impurity and sewage, the bottom in stirring pond, sewage further flows into in the air supporting pond, further separate sewage in the air supporting pond, dross and oil grain that float on the surface of water are clear away it by the continuous motion along the liquid level of frizing device, the sediment of the bottom in air supporting pond is arranged to the escape canal through the drain outlet of bottom, sewage after the air supporting pond is handled further gets into the sedimentation tank, deposit in the sedimentation tank, the separation, the sewage of getting the sedimentation tank bottom gets into multistage whirl device and does further processing.
Preferably, a fourth partition plate is arranged in the air floatation tank, the fourth partition plate is close to the second partition plate, one end of the fourth partition plate is fixedly arranged at the bottom of the air floatation tank, and a gap is formed between the other end of the fourth partition plate and the top of the air floatation tank. Adopt this preferred scheme, set up the dwell time of fourth baffle extension sewage in the device, improve the separation effect for flocculation impurity takes place secondary flocculation reaction at the suspension in-process.
Preferably, a fifth partition board is arranged in the sedimentation tank, the fifth partition board is close to the third partition board, one end of the fifth partition board is fixedly arranged at the bottom of the sedimentation tank, and a gap is formed between the other end of the fifth partition board and the top of the sedimentation tank. By adopting the preferred scheme, the fifth clapboard is arranged to prolong the retention time of the sewage in the device, and the sedimentation and separation effects are improved.
Preferably, the air flotation device further comprises a second circulating water pipe, one end of the second circulating water pipe is located at the bottom of the air flotation tank and between the fourth partition plate and the second partition plate, and the other end of the second circulating water pipe is located at the bottom of the sedimentation tank. By adopting the preferred scheme, the second circulating water pipe is arranged to establish a multi-circulation system, so that the treatment effect of the oily water is improved.
Preferably, the multistage cyclone device comprises a first cyclone and a second cyclone, wherein a liquid inlet of the first cyclone is connected with a water outlet of the air floatation device, an overflow port of the first cyclone is connected with a liquid inlet of the second cyclone, a sewage outlet of the first cyclone and a sewage outlet of the second cyclone are connected with the water drainage pipe through a first circulating water pipe, and a sand setting port of the second cyclone is connected with the storage tank. By adopting the preferred scheme, the first cyclone and the second cyclone are arranged in series to carry out twice cyclone, a small amount of crude oil and sewage are obtained by cyclone, the sewage is discharged into the storage tank, and the crude oil is separated at the overflow port of the second cyclone, so that the treatment effect of oily water is improved.
Preferably, the device also comprises a monitoring pool, and the monitoring pool is connected with the storage pool through a monitoring water pipe. Adopt this preferred scheme, extract the waste water in the holding vessel through the monitoring water pipe and monitor, if waste water is reasonable then can discharge.
Preferably, the monitoring pool is connected with the multi-stage cyclone device through a third circulating water pipe. By adopting the preferred scheme, if the wastewater in the monitoring pool is unqualified, the unqualified wastewater is sent to the multistage cyclone device for circular treatment through the third circulating water pipe.
The utility model has the advantages that:
1. the utility model discloses well oily water gets into the oil interceptor, carry out first oil, sewage separation at the oil interceptor, improve oil-water separation effect, extract the sewage of oil interceptor bottom simultaneously and the liquid medicine in the charge system to the air supporting device, flocculate, deposit the large granule impurity in the greasy dirt aquatic, be convenient for follow-up further air supporting oily water, improve oil-water separation effect, after the processing of air supporting device, the oil separation of air supporting device upper surface is taken out, the sewage of extraction air supporting device bottom carries out the whirl in the multistage whirl device, further separate sewage, the supernatant that the whirl obtained is the little crude oil of final separation, the whole clean partial sewage that produces in the whole process and do not handle all flows back to the oil interceptor, carry out the circulation treatment, improve oily water's treatment effect, the utility model discloses an oil separator, air supporting, flocculation, whirl and multicycle treatment, effectively remove the particle impurities in the airport oil wastewater and greatly improve the separation effect in the oil wastewater.
2. The first baffle plates which are staggered with each other are arranged in the oil separation tank, so that the oil separation path of the oily water is prolonged, and the treatment efficiency of the oily water is improved; the dosing system comprises two dosing barrels which are arranged in parallel, and the dosing barrels are configured in a gradient mode according to the impurity condition of the oily water or the content condition of the oily water, so that the flocculation effect is improved.
3. The utility model discloses an air supporting device is including the stirring pond, the flocculation of liquid medicine and greasy dirt aquatic that the stirring pond is arranged in medicine system, carry out flocculation with granule impurity or oil grain in the greasy dirt aquatic, make it float to the sewage upper surface, realize the separation of granule impurity and sewage, the bottom in stirring pond, sewage further flows in the air supporting pond, further separate sewage in the air supporting pond, dross and oil grain that float on the surface of water are clear away it by the continuous liquid level motion of following of frizing device, the precipitate of the bottom in air supporting pond is arranged to the escape canal through the drain outlet of bottom, sewage after the air supporting pond is handled further gets into the sedimentation tank, deposit in the sedimentation tank, the separation, the sewage of getting the sedimentation tank bottom gets into multistage whirl device and does further processing.
4. The utility model discloses in set up the dwell time of fourth baffle extension sewage at the device, improve the separation effect for flocculation impurity takes place secondary flocculation reaction at the suspension in-process. The fifth clapboard is arranged to prolong the retention time of the sewage in the device and improve the effects of sedimentation and separation. A second circulating water pipe is arranged to establish a multi-circulation system, so that the treatment effect of the oily water is improved; the first cyclone and the second cyclone are arranged in series for twice cyclone to obtain a small amount of crude oil and sewage, the sewage is discharged into the storage pool, and the crude oil is separated at the overflow port of the second cyclone, so that the treatment effect of oily water is improved; the wastewater in the storage pool is pumped through the monitoring water pipe for monitoring, and the wastewater can be discharged if the wastewater is reasonable; and if the wastewater in the monitoring of the monitoring pool is unqualified, discharging the unqualified wastewater into the multi-stage cyclone device through a third circulating water pipe for circular treatment.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-an oil separation tank; 2, an air floatation device; 3-a dosing system; 4-a multi-stage cyclone device; 5-a storage pool; 6-drainage ditch; 7-a monitoring pool; 11-a first separator; 21-a stirring pool; 22-an air floatation tank; 23-a sedimentation tank; 24-a second separator; 25-a third separator; 26-a scraper device; 27-a water collecting pipe; 28-a fourth separator; 29-a fifth separator; 31-a medicine adding barrel; 41-a first cyclone; 42-second cyclone.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly described below with reference to the accompanying drawings and the description of the embodiments or the prior art, and it is obvious that the following description of the structure of the accompanying drawings is only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without any inventive work.
The technical solution provided by the present invention will be described in detail by way of embodiments with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto.
In some instances, some embodiments are not described or not in detail, as they are conventional or customary in the art.
Furthermore, the technical features described herein, or the steps of all methods or processes disclosed, may be combined in any suitable manner in one or more embodiments, in addition to the mutually exclusive features and/or steps. It will be readily appreciated by those of skill in the art that the order of the steps or operations of the methods associated with the embodiments provided herein may be varied. Any order in the drawings and examples is for illustrative purposes only and does not imply that a certain order is required unless explicitly stated to be required.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The terms "connected" and "coupled" when used in this application, encompass both direct and indirect connections (and couplings) where appropriate and where not necessary contradictory.
The first embodiment is as follows:
the utility model provides an oily water treatment facilities, is including the oil interceptor 1 that is used for accepting oily water, one side and the air flotation device 2's of oil interceptor 1 water inlet are connected, the water inlet of air flotation device 2 still is connected with charge system 3, one side that oil interceptor 1 was kept away from to air flotation device 2 is provided with the delivery port, the delivery port of air flotation device is connected with multistage whirl device 4, multistage whirl device 4's sand setting mouth is connected with storage tank 5, charge system 3, air flotation device 2, multistage whirl device 4 all are connected to escape canal 6 through circulating pipe, escape canal 6 with oil interceptor 1 intercommunication.
The oil separation tank 1 comprises a tank body, first baffle plates 11 which are mutually staggered are arranged in the tank body, one side of each first baffle plate 11 is fixedly connected with the tank body, a gap is reserved between the other side of each first baffle plate 11 and the tank body, a sewage inlet is formed in one side of the tank body, and the other side of the tank body is connected with a water inlet of the air floatation device 2.
The dosing system 3 comprises two dosing barrels 31, a medicine outlet of each dosing barrel 31 is connected with a water inlet of the air flotation device 2 through a liquid medicine delivery pump 32, a stirring device 33 is arranged in each dosing barrel 31, and a sewage outlet of each dosing barrel 31 is connected to the drainage ditch 6 through a circulating water pipe.
The air supporting device 2 is including stirring pond 21, air supporting pond 22 and the sedimentation tank 23 that sets gradually, the water inlet sets up one side of stirring pond 21, the water inlet is located the top of stirring pond 21, the opposite side of stirring pond 21 pass through second baffle 24 with the air supporting pond 22 is connected, stirring pond 21 with the sedimentation tank 23 is connected through third baffle 25, the water inlet of air supporting device is located the bottom of sedimentation tank 23, the bottom of second baffle 24 has the opening, the top of air supporting pond 22 is provided with scrapes oily device 26, and the bottom of air supporting pond 22 is provided with collector pipe 27, collector pipe 27's one end with third baffle 25 intercommunication, the bottom of stirring pond 21, air supporting pond 22 and sedimentation tank 23 all is provided with the drain, the drain passes through circulating water pipe and is connected with escape canal 6.
In the first embodiment, as shown in fig. 1, oily sewage enters from the top of the left side of the oil separation tank 1, first primary separation is performed in the oil separation tank 1, after standing for a period of time, the oily sewage is pumped from the bottom of the right side of the oil separation tank by a pump, and is sent to the stirring tank 21 by a screw conveyor, meanwhile, according to the amount of the oily sewage, the medicine adding barrel 31 is opened, medicine liquid is also sent to the stirring tank 21 by a medicine adding pump, the medicine liquid is a flocculating agent, the medicine liquid and the oily sewage are stirred in the stirring tank 21, the flocculating agent is added, the flocculating agent forms large flocs from floating suspended particles and oil particles in the oily sewage without scum aggregation, the flocs can float on the liquid surface, thereby realizing separation of the particles from the oily sewage and achieving the purpose of impurity removal, sediments in the stirring tank 21 can be discharged from a sewage discharge outlet at the bottom, the oily sewage without particles of the impurities and a small amount of sediments enter the floatation tank 22 from an opening at the bottom of the second separation tank, a small amount of fine flocs and crude oil are continuously scraped by the oil scraping device 26 and collected, sewage under the crude oil surface enters the sedimentation tank 23 from the bottom of the water collecting pipe 27, after standing in the sedimentation tank 23, the sewage at the bottom of the sedimentation tank 23 is extracted for rotational flow, the sewage which may contain a small amount of crude oil which is not treated to be clean is sent to the first cyclone 41 by the screw conveyor, the first cyclone 41 carries out the first cyclone on the sewage, the supernatant of the first cyclone is used as crude oil for recovery, the sand-containing underflow enters the second cyclone 42 for the second cyclone to obtain the wastewater without crude oil and a small amount of crude oil, the sewage without crude oil is sent to the storage tank 5, the crude oil in the process can be recycled and then enters the oil separation tank 1 for treatment, and the wastewater and untreated clean sewage in the process are also sent to a drainage ditch for post treatment in the oil separation tank 1 again; the middle of each device is connected by a water pipe, and a valve, a filter, a pump body and the like are arranged on the pipeline.
The following examples are all preferably obtained on the basis of example one.
Example two:
a fourth partition plate 28 is arranged in the floatation tank 22, the fourth partition plate 28 is close to the second partition plate 24, one end of the fourth partition plate 28 is fixedly arranged at the bottom of the floatation tank 22, and a gap is formed between the other end of the fourth partition plate 28 and the top of the floatation tank 22.
A fifth partition plate 29 is arranged in the sedimentation tank 23, the fifth partition plate 29 is close to the third partition plate 25, one end of the fifth partition plate 29 is fixedly arranged at the bottom of the sedimentation tank 23, and a gap is formed between the other end of the fifth partition plate 29 and the top of the sedimentation tank 23.
In the second embodiment, the bottom of the fourth partition 28 is fixedly connected to the bottom of the floatation tank 22, and the fourth partition 28 is close to the top of the floatation tank 22 and has a section of inclined plate; the fifth partition 29 is provided at the bottom of the settling tank 23 for extending the time of the oily water in the settling tank 23.
Example three:
the air flotation device 2 further comprises a second circulating water pipe, one end of the second circulating water pipe is located at the bottom of the air flotation tank 22 and between the fourth partition plate 28 and the second partition plate 24, and the other end of the second circulating water pipe is located at the bottom of the sedimentation tank 23.
In the fourth implementation, the sewage at the bottom of the sedimentation tank is sent to the space between the fourth partition plate 28 and the second partition plate 24 again by the second circulating water pipe, so that the sewage at the bottom of the sedimentation tank is subjected to air floatation and sedimentation again, and the separation effect of the oil-sewage is ensured.
Example four:
the device also comprises a monitoring pool 7, wherein the monitoring pool 7 is connected with the storage pool 5 through a monitoring water pipe.
And the monitoring pool 7 is connected with the multi-stage cyclone device 4 through a third circulating water pipe.
In the fourth embodiment, the monitoring tank 7 is used for monitoring the wastewater in the storage tank, the wastewater in the monitoring tank 7 is qualified after the monitoring is completed, the wastewater in the monitoring tank 7 is discharged, and the unqualified wastewater is sent to the multistage cyclone device 4 to be treated again.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (10)
1. The utility model provides an oily water treatment facilities which characterized in that: including oil interceptor (1) that is used for accepting oily water, one side and the water inlet of air supporting device (2) of oil interceptor (1) are connected, the water inlet of air supporting device (2) still is connected with charge system (3), one side that oil interceptor (1) was kept away from in air supporting device (2) is provided with the delivery port, the delivery port of air supporting device (2) is connected with multistage whirl device (4), the sand setting mouth of multistage whirl device (4) is connected with reservoir (5), charge system (3), air supporting device (2), multistage whirl device (4) all are connected to escape canal (6) through circulating pipe, escape canal (6) with oil interceptor (1) intercommunication.
2. The oily water treatment device according to claim 1, which is characterized in that: the oil separation tank (1) comprises a tank body, first partition plates (11) which are mutually staggered are arranged in the tank body, one side of each first partition plate (11) is fixedly connected with the tank body, a gap is formed between the other side of each first partition plate (11) and the tank body, one side of the tank body is provided with a sewage inlet, and the other side of the tank body is connected with a water inlet of the air floatation device (2).
3. The oily water treatment device according to claim 1, which is characterized in that: medicine system (3) include two medicine barrels (31), and the play medicine mouth of each medicine barrel (31) passes through liquid medicine delivery pump (32) and is connected with the water inlet of air supporting device (2), all is provided with agitating unit (33) in each medicine barrel (31), and the drain of each medicine barrel (31) that adds all is connected to through circulating pipe drainage ditch (6).
4. The oily water treatment device according to claim 1, which is characterized in that: air supporting device (2) is including stirring pond (21), air supporting pond (22) and sedimentation tank (23) that set gradually, the water inlet setting of air supporting device (2) is in one side of stirring pond (21), the water inlet of air supporting device (2) is located the top of stirring pond (21), the opposite side of stirring pond (21) pass through second baffle (24) with air supporting pond (22) are connected, stirring pond (21) with sedimentation tank (23) are connected through third baffle (25), the water inlet is located the bottom of sedimentation tank (23), the bottom of second baffle (24) has the opening, the top of air supporting pond (22) is provided with frizing device (26), and the bottom of air supporting pond (22) is provided with collector pipe (27), the one end of collector pipe (27) with third baffle (25) intercommunication, stirring pond (21), The bottoms of the air flotation tank (22) and the sedimentation tank (23) are provided with drain outlets, and the drain outlets are connected with a drainage ditch (6) through circulating water pipes.
5. The oily water treatment device according to claim 4, which is characterized in that: a fourth partition plate (28) is arranged in the air floatation tank (22), the fourth partition plate (28) is close to the second partition plate (24), one end of the fourth partition plate (28) is fixedly arranged at the bottom of the air floatation tank (22), and a gap is formed between the other end of the fourth partition plate (28) and the top of the air floatation tank (22).
6. The oily water treatment device according to claim 4, which is characterized in that: a fifth partition plate (29) is arranged in the sedimentation tank (23), the fifth partition plate (29) is close to the third partition plate (25), one end of the fifth partition plate (29) is fixedly arranged at the bottom of the sedimentation tank (23), and a gap is formed between the other end of the fifth partition plate (29) and the top of the sedimentation tank (23).
7. The oily water treatment device according to claim 5, which is characterized in that: the air floatation device (2) further comprises a second circulating water pipe, one end of the second circulating water pipe is located at the bottom of the air floatation tank (22) and located between the fourth partition plate (28) and the second partition plate (24), and the other end of the second circulating water pipe is located at the bottom of the sedimentation tank (23).
8. The oily water treatment device according to claim 1, which is characterized in that: multistage whirl device (4) include first swirler (41) and second swirler (42), the inlet of first swirler (41) with the delivery port of air supporting device (2) is connected, the overflow mouth of first swirler (41) with the inlet of second swirler (42) is connected, the drain of first swirler (41) and the drain of second swirler (42) all through first circulating water pipe with escape canal (6) are connected, the sand setting mouth of second swirler (42) with reservoir (5) are connected.
9. The oily water treatment device according to claim 1, which is characterized in that: the device is characterized by further comprising a monitoring pool (7), wherein the monitoring pool (7) is connected with the storage pool (5) through a monitoring water pipe.
10. The oily water treatment device according to claim 9, which is characterized in that: the monitoring pool (7) is connected with the multi-stage rotational flow device (4) through a third circulating water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023250490.0U CN214192861U (en) | 2020-12-29 | 2020-12-29 | Oily water treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023250490.0U CN214192861U (en) | 2020-12-29 | 2020-12-29 | Oily water treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214192861U true CN214192861U (en) | 2021-09-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023250490.0U Active CN214192861U (en) | 2020-12-29 | 2020-12-29 | Oily water treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214192861U (en) |
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2020
- 2020-12-29 CN CN202023250490.0U patent/CN214192861U/en active Active
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