CN212655507U - Novel micro-nano bubble air flotation deoiling device - Google Patents
Novel micro-nano bubble air flotation deoiling device Download PDFInfo
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- CN212655507U CN212655507U CN202021018783.3U CN202021018783U CN212655507U CN 212655507 U CN212655507 U CN 212655507U CN 202021018783 U CN202021018783 U CN 202021018783U CN 212655507 U CN212655507 U CN 212655507U
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Abstract
The utility model discloses a novel micro-nano bubble air flotation oil removing device, which comprises a micro-nano bubble air flotation device, a PLC controller, a mixing tank, an air flotation tank, a clarification tank and an oil storage tank which are connected in sequence; the lower part of the side wall of the mixing tank is provided with a water inlet pipe, and the micro-nano bubble air flotation device comprises a micro-nano aerator, a dissolved air tank, a releaser and a micro-nano aerator; a gas pipeline is arranged between the micro-nano aerator and the dissolved air tank, an extension pipe is arranged between the dissolved air tank and the releaser, the micro-nano aerator is arranged at the bottom of the air floatation tank, the release pipe is arranged between the micro-nano aerator and the releaser, and the micro-nano aerator is connected with the PLC; the middle part of the side wall of the clarification tank is provided with a water outlet, and the upper part of the side wall of the oil storage tank is provided with an oil outlet.
Description
Technical Field
The utility model relates to an oily waste water treatment field especially relates to a novel micro-nano bubble air supporting deoiling device.
Background
With the rapid development of the petrochemical industry, a large amount of petrochemical oily wastewater is discharged and increased day by day, the petrochemical oily wastewater contains a large amount of toxic and harmful substances such as waste oil, sulfides, volatile phenol, polycyclic aromatic compounds, soluble salts and the like, has the characteristics of large water quantity fluctuation, frequent water quality fluctuation, complex pollutant components and the like, and the untreated oily wastewater directly discharged is accompanied by overflow of various malodorous gases to cause serious pollution to the ecological environment. The existing various oil-water separation technologies are particularly common in the air flotation technology, oil is quickly floated by stirring oil-water mixed liquid in a blast aeration mode, and the oil is taken out in a overflowing overflow mode. However, the technology has incomplete oil-water separation and low oil-water separation efficiency, and is not beneficial to large-scale oil-water separation engineering.
At present, a micro-nano bubble air floatation treatment oil-containing sewage technology and process exist, and a Chinese patent CN207608358U discloses a micro-nano bubble treatment oil-containing wastewater device, which comprises an air floatation groove and a foam overflow groove, wherein the device has a simple structure, small treatment capacity, can not recover waste oil, and is not suitable for treating oil-containing wastewater of large oil fields; chinese patent CN108911003A discloses a micro-nano bubble air-flotation oil removal device and a process, wherein wastewater to be treated containing oil is sequentially treated in different treatment tanks by sequentially separating a pretreatment tank, an aeration tank, an air-flotation filter tank and a clean water tank, the device has reasonable structure and compact structure and large treatment capacity, but the system has large energy consumption and the whole device has no backflow facility, and the treated wastewater can hardly meet the discharge standard; chinese patent CN110668522A provides a micro-nano bubble generating device and a micro-nano bubble processing method of oily wastewater, which comprises an air source, a jet oscillator, a diffuser and a waste liquid tank.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the shortcoming of prior art, providing a horizontal whirl water oil separating device that structural design is scientific, area is little, deoiling is effectual, operation maintenance is simple.
In order to realize the purpose of the utility model, the technical proposal of the utility model is that:
a novel micro-nano bubble air floatation oil removal device comprises a micro-nano bubble air floatation device, a PLC (programmable logic controller) and a mixing tank, an air floatation tank, a clarification tank and an oil storage tank which are connected in sequence; the lower part of the side wall of the mixing tank is provided with a water inlet pipe, and the micro-nano bubble air flotation device comprises a micro-nano aerator, a dissolved air tank, a releaser and a micro-nano aerator; a gas pipeline is arranged between the micro-nano aerator and the dissolved air tank, an extension pipe is arranged between the dissolved air tank and the releaser, the micro-nano aerator is arranged at the bottom of the air floatation tank, the release pipe is arranged between the micro-nano aerator and the releaser, and the micro-nano aerator is connected with the PLC; the middle part of the side wall of the clarification tank is provided with a water outlet, and the upper part of the side wall of the oil storage tank is provided with an oil outlet.
Preferably, an oil scraper is arranged at the top of the joint of the air floatation tank and the clarification tank and is connected with the output end of the motor through a chain; the motor is connected with the PLC.
Preferably, a return pipe is further arranged at the upper part of the side wall of the clarification tank; the other end of the backflow pipe is connected with a water inlet pipe at the lower part of the side wall of the mixing tank, a backflow pump is arranged on the backflow pipe, and the backflow pump is connected with the PLC.
Preferably, the bottom parts of the mixing tank, the air flotation tank and the clarification tank are all provided with sludge discharge pipes.
Preferably, the micro-nano aerator, the gas pipeline and the dissolved gas tank are all arranged on the outer side wall of the mixing tank; a first pressure gauge is arranged on the gas pipeline; and a second pressure gauge is arranged on the dissolved air tank.
Preferably, the extension pipe and the releaser are arranged above the mixing tank and the air floatation tank.
Preferably, the volume ratio of the mixing tank to the air flotation tank to the clarification tank to the oil storage tank is 2: 2-10: 2: 1, most preferably 2: 6: 2: 1.
the utility model has the advantages that:
firstly, the method comprises the following steps: the micro-nano bubble and air floatation technology are organically combined, and the micro-nano aeration machine releases micro-nano bubbles with large specific surface area through high-pressure air dissolving and pressure reducing, so that pollutants such as emulsified oil, micro suspended particles and the like in the wastewater are quickly separated, and the oil removal effect is good;
secondly, the method comprises the following steps: a return pipe is arranged to return the wastewater in the clarification tank and treat the wastewater again to ensure that the wastewater can reach the discharge standard;
thirdly, the method comprises the following steps: an oil storage pool is arranged, so that waste oil can be well collected and recycled;
fourthly: the whole device has the advantages of compact structure, convenient installation, simple operation, small occupied area and low operating cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the device comprises a micro-nano bubble air flotation device 1, a micro-nano aerator 1.1, a dissolved air tank 1.2, a releaser 1.3, a micro-nano aerator 1.4, a gas pipeline 1.5, a telescopic pipe 1.6, a release pipe 1.7, a first pressure gauge 1.8, a second pressure gauge 1.9, a mixing tank 2, a water inlet pipe 2.1, an air flotation tank 3, a clarification tank 4, a water outlet 4.1, a return pipe 4.2, a return pump 4.3, an oil storage tank 5.1, an oil outlet 5, an oil scraper 6, a chain 7, a motor 8, a sludge discharge pipe 9 and a PLC control cabinet 10.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
A novel micro-nano bubble air flotation oil removing device comprises a micro-nano bubble air flotation device 1, a PLC (programmable logic controller) and a mixing tank 2, an air flotation tank 3, a clarification tank 4 and an oil storage tank 5 which are connected in sequence; a water inlet pipe 2.1 is arranged at the lower part of the side wall of the mixing tank 2, and the micro-nano bubble air flotation device 1 comprises a micro-nano aerator 1.1, a dissolved air tank 1.2, a releaser 1.3 and a micro-nano aerator 1.4; a gas pipeline 1.5 is arranged between the micro-nano aerator 1.1 and the dissolved air tank 1.2, an extension pipe 1.6 is arranged between the dissolved air tank 1.2 and the releaser 1.3, the micro-nano aerator 1.4 is arranged at the bottom of the air floatation tank 3, a release pipe 1.7 is arranged between the micro-nano aerator 1.4 and the releaser 1.3, and the micro-nano aerator 1.1 is connected with a PLC (programmable logic controller); a water outlet 4.1 is formed in the middle of the side wall of the clarification tank 4, and an oil outlet 5.1 is formed in the upper part of the side wall of the oil storage tank 5; the PLC controller is installed in the PLC control cabinet 10.
Preferably, an oil scraper 6 is arranged at the top of the joint of the floatation tank 3 and the clarification tank 4, and the oil scraper 6 is connected with the output end of a motor 8 through a chain 7; and the motor 8 is connected with a PLC controller.
Preferably, a return pipe 4.2 is also arranged at the upper part of the side wall of the clarification tank 4; the other end of the backflow pipe 4.2 is connected with a water inlet pipe 2.1 at the lower part of the side wall of the mixing tank 2, a backflow pump 4.3 is arranged on the backflow pipe 4.2, and the backflow pump 4.3 is connected with the PLC.
Preferably, the bottom parts of the mixing tank 2, the air flotation tank 3 and the clarification tank 4 are all provided with sludge discharge pipes 9.
Preferably, the micro-nano aerator 1.1, the gas pipeline 1.5 and the dissolved gas tank 1.2 are all arranged on the outer side wall of the mixing tank 2; a first pressure gauge 1.8 is arranged on the gas pipeline 1.5; and a second pressure gauge 1.9 is arranged on the dissolved air tank 1.2.
Preferably, the extension pipe 1.6 and the releaser 1.3 are arranged above the mixing tank 2 and the air flotation tank 3.
Preferably, the volume ratio of the mixing tank 2 to the flotation tank 3 to the clarification tank 4 to the oil storage tank 5 is 2: 2-10: 2: 1, most preferably 2: 6: 2: 1.
a dosing coagulation device can be additionally arranged in the mixing tank 2 to improve the sedimentation effect of suspended matters in the wastewater.
A liquid level regulator can be additionally arranged in the oil storage pool 5.
The air-water ratio in the dissolved air tank 1.2 can be automatically controlled by a suspension ball and an electromagnetic valve.
the working principle of the device is as follows:
oily waste water enters a mixing tank 2 through a water inlet pipe 2.1 to be preliminarily precipitated to remove large-particle suspended matters and then enters an air floatation tank 3, air generated by a micro-nano aerator 1.1 is stored in a dissolved air tank 1.2 through a gas pipeline 1.5, then the air and the water are fully mixed under the action of a releaser 1.3, micro-nano bubbles with the diameter of below 20 micrometers are generated through the micro-nano aerator 1.4 and are fully mixed with the oily waste water in the air floatation tank 3, oil in the waste water moves upwards under the action of the large specific surface area and the buoyancy of the micro-nano bubbles to form oil-water separation, the upper oil enters a clarification tank 4 through an oil scraper 6, the oil overflows into an oil storage tank 5 after standing and layering and is discharged from an oil outlet 5.1, the water without the oil is discharged from a water outlet 4.1 on the side wall of the clarification tank 4, and precipitates generated in the treatment process are discharged from a sludge.
When the oil removing effect does not reach the ideal effect, the sewage in the clarification tank 4 can be refluxed to the water inlet pipe 2.1 for secondary oil removal.
The described embodiments are only some, but not all embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Claims (7)
1. The utility model provides a novel micro-nano bubble air supporting deoiling device which characterized in that: comprises a micro-nano bubble air floating device (1), a PLC controller, and a mixing tank (2), an air floating tank (3), a clarification tank (4) and an oil storage tank (5) which are connected in sequence; a water inlet pipe (2.1) is arranged at the lower part of the side wall of the mixing tank (2), and the micro-nano bubble air flotation device (1) comprises a micro-nano aerator (1.1), a dissolved air tank (1.2), a releaser (1.3) and a micro-nano aerator (1.4); a gas pipeline (1.5) is arranged between the micro-nano aerator (1.1) and the dissolved air tank (1.2), an extension pipe (1.6) is arranged between the dissolved air tank (1.2) and the releaser (1.3), the micro-nano aerator (1.4) is arranged at the bottom of the air floatation tank (3), a release pipe (1.7) is arranged between the micro-nano aerator (1.4) and the releaser (1.3), and the micro-nano aerator (1.1) is connected with a PLC (programmable logic controller); the middle part of the side wall of the clarification tank (4) is provided with a water outlet (4.1), and the upper part of the side wall of the oil storage tank (5) is provided with an oil outlet (5.1).
2. The novel micro-nano bubble air flotation oil removing device according to claim 1, characterized in that: an oil scraper (6) is arranged at the top of the joint of the air floatation tank (3) and the clarification tank (4), and the oil scraper (6) is connected with the output end of a motor (8) through a chain (7); the motor (8) is connected with the PLC.
3. The novel micro-nano bubble air flotation oil removing device according to claim 1, characterized in that: a return pipe (4.2) is also arranged at the upper part of the side wall of the clarification tank (4); the other end of the backflow pipe (4.2) is connected with a water inlet pipe (2.1) at the lower part of the side wall of the mixing tank (2), a backflow pump (4.3) is arranged on the backflow pipe (4.2), and the backflow pump (4.3) is connected with the PLC.
4. The novel micro-nano bubble air flotation oil removing device according to claim 1, characterized in that: and sludge discharge pipes (9) are arranged at the bottoms of the mixing tank (2), the air flotation tank (3) and the clarification tank (4).
5. The novel micro-nano bubble air flotation oil removing device according to claim 1, characterized in that: the micro-nano aerator (1.1), the gas pipeline (1.5) and the dissolved gas tank (1.2) are all arranged on the outer side wall of the mixing tank (2); a first pressure gauge (1.8) is arranged on the gas pipeline (1.5); and a second pressure gauge (1.9) is arranged on the dissolved air tank (1.2).
6. The novel micro-nano bubble air flotation oil removing device according to claim 1, characterized in that: the telescopic pipe (1.6) and the releaser (1.3) are arranged above the mixing tank (2) and the air flotation tank (3).
7. The novel micro-nano bubble air flotation oil removing device according to claim 1, characterized in that: the volume ratio of the mixing tank (2), the air flotation tank (3), the clarification tank (4) and the oil storage tank (5) is 2: 2-10: 2: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021018783.3U CN212655507U (en) | 2020-06-05 | 2020-06-05 | Novel micro-nano bubble air flotation deoiling device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021018783.3U CN212655507U (en) | 2020-06-05 | 2020-06-05 | Novel micro-nano bubble air flotation deoiling device |
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| CN212655507U true CN212655507U (en) | 2021-03-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117088578A (en) * | 2023-10-20 | 2023-11-21 | 杭州尚善若水环保科技有限公司 | Method for removing high-concentration suspended matters in water |
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2020
- 2020-06-05 CN CN202021018783.3U patent/CN212655507U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117088578A (en) * | 2023-10-20 | 2023-11-21 | 杭州尚善若水环保科技有限公司 | Method for removing high-concentration suspended matters in water |
| CN117088578B (en) * | 2023-10-20 | 2024-01-23 | 杭州尚善若水环保科技有限公司 | Method for removing high-concentration suspended matters in water |
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