CN210085066U - Micro-nano aeration BAF treatment device - Google Patents
Micro-nano aeration BAF treatment device Download PDFInfo
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- CN210085066U CN210085066U CN201920780915.7U CN201920780915U CN210085066U CN 210085066 U CN210085066 U CN 210085066U CN 201920780915 U CN201920780915 U CN 201920780915U CN 210085066 U CN210085066 U CN 210085066U
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- 238000005273 aeration Methods 0.000 title claims abstract description 22
- 239000010865 sewage Substances 0.000 claims abstract description 73
- 239000002101 nanobubble Substances 0.000 claims abstract description 44
- 239000000919 ceramic Substances 0.000 claims abstract description 40
- 239000012528 membrane Substances 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 70
- 238000011001 backwashing Methods 0.000 claims description 19
- 239000011148 porous material Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 abstract description 68
- 239000000945 filler Substances 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 5
- 239000001301 oxygen Substances 0.000 abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 abstract description 5
- 239000002351 wastewater Substances 0.000 description 15
- 230000014759 maintenance of location Effects 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000005187 foaming Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- -1 chemical engineering Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002120 nanofilm Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/06—Aerobic processes using submerged filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
-
- 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
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a micro-nano aeration BAF processing apparatus, including BAF device, micro-nano bubble generating device, backwash device. The BAF device comprises a sewage inlet pump, a BAF reaction tank, a sewage circulating pump and a basket filter. The micro-nano bubble generating device comprises a micro-nano bubble generating device shell, a nano ceramic membrane tube, a liquid flowmeter, a gas rotameter, a gas pressure gauge and a gas control valve. The utility model integrates the BAF device and the micro-nano bubble generating device, and is different from the traditional BAF aeration mode, the nano-scale ceramic membrane tube aeration of the utility model is micro-nano bubbles, the gas utilization rate is high, the gas consumption is less, the surface of the BAF reaction tank can not be rolled, the gas detention time is long, and the gas-liquid contact area is large; the sewage carrying micro-nano gas passes through the BAF biological filler layer and is supplied to oxygen content, COD in the sewage is decomposed and consumed, the COD removing efficiency is high, and the energy consumption is low.
Description
Technical Field
The invention belongs to the technical field of environmental protection, and particularly relates to a micro-nano aeration BAF treatment device for treating wastewater in biochemical treatment in industries such as petroleum, chemical engineering, steel, sewage plants, gas generation stations, machining and the like.
Background
Generally, the sources of sewage to be biochemically treated are wide, including industries such as petroleum, petrochemical, steel, sewage plants, gas generation stations, and machining. Oxygen-consuming BAF plants are common devices for the biochemical treatment of various effluents.
According to incomplete statistics, the industrial sewage generated in China is more than 35 hundred million tons every year, the domestic sewage generated in China is more than 510 hundred million tons every year, and a large amount of wastewater needs to be treated and then is discharged into rivers and lakes every year. Under the policy situation that the requirement for environmental protection discharge is more and more strict, how to ensure that the sewage can be efficiently and energy-efficiently treated while the standard discharge is achieved is a key improvement direction of each sewage treatment plant.
The existing BAF aeration device has the disadvantages of large bubble size, small micro-bubble quantity, short detention time, insufficient gas-liquid contact, high gas-water ratio and higher tail gas treatment cost. Meanwhile, the direct aeration causes large gas amount, the surface of the BAF tower rolls, and in addition, sewage contains more active and easily-foaming substances, the surface of the BAF tower easily generates a large amount of foams, so that the operation of a subsequent tail gas treatment device is influenced.
Disclosure of Invention
The invention aims to solve the technical problems that the existing BAF aeration device generates large bubbles, short gas retention time, insufficient gas-liquid contact, high gas-water ratio, large rolling fluctuation of the tank surface, high tail gas treatment cost and the like, and provides the micro-nano BAF aeration device which is small in bubble size, long in gas retention time, large in gas-liquid contact area, sufficient in contact, free of rolling of the tank surface, high in COD removal efficiency, low in energy consumption and low in cost.
In order to solve the technical problems, the invention adopts the following technical scheme:
a micro-nano aeration BAF treatment device comprises a BAF device, a micro-nano bubble generation device and a backwashing device.
The BAF device comprises a sewage inlet pump, a BAF reaction tank, a sewage circulating pump and a basket filter. The middle part in the BAF reaction tank is provided with a BAF biological packing layer. The upper part of the BAF reaction tank corresponding to the BAF biological packing layer is a BAF upper water layer. A BAF sewage inlet and a circulating water inlet are arranged on the side wall of the BAF reaction tank and below the BAF biological filler layer. At least two first BAF water outlets are arranged on the upper part of the upper water layer of the BAF. And a second BAF water outlet is formed in the lower part of the upper water layer of the BAF. A basket filter is arranged at the water outlet of the second BAF.
The inlet of the sewage water inlet pump is communicated with the sewage tank. The outlet of the sewage inlet pump is communicated with the BAF sewage inlet. And the inlet of the sewage circulating pump is communicated with the second BAF water outlet. A first control valve is arranged between the sewage pool and the sewage inlet pump. A second control valve is arranged between the sewage inlet pump and the BAF sewage inlet. A third control valve is arranged between the second BAF water outlet and the sewage circulating pump, and a water outlet is arranged at the bottom of the BAF reaction tank. A drain valve is arranged at the drain outlet.
The micro-nano bubble generating device comprises a micro-nano bubble generating device shell, a nano ceramic membrane tube, a liquid flowmeter, a gas rotameter, a gas pressure gauge and a gas control valve. The nano-scale ceramic membrane pipe is sleeved in the shell of the micro-nano bubble generating device. The outer wall of the nano-scale ceramic membrane tube and the inner wall of the shell of the micro-nano bubble generating device are enclosed to form a gas chamber. The gas chamber is communicated with the compressed air bottle through a gas rotameter. And a gas control valve is arranged between the gas rotameter and the gas chamber.
And a gas pressure gauge is arranged on the shell of the micro-nano bubble generating device and used for measuring the pressure of gas in the gas chamber. One end of the nano-scale ceramic membrane tube is communicated with the sewage circulating pump sequentially through a fourth control valve, a liquid flowmeter and a fifth control valve, and the other end of the nano-scale ceramic membrane tube is communicated with the circulating water inlet sequentially through a sixth control valve and a seventh control valve.
The backwashing device comprises a backwashing water tank and a backwashing pump, and the backwashing water tank is communicated with the pipeline between the sixth control valve and the seventh control valve sequentially through the eighth control valve, the backwashing pump and the ninth control valve. And a compressed air inlet pipeline is arranged on a pipeline between the seventh control valve and the circulating water inlet, and a tenth control valve is arranged on the compressed air inlet pipeline.
In one embodiment, the micro-nano bubble generation device shell is cylindrical.
In one embodiment, the pore diameter of the nanometer membrane pores on the surface of the nanometer ceramic membrane tube ranges from 50nm to 5000 nm.
In one embodiment, the two ends of the nano-scale ceramic membrane tube are provided with sealing rings for sealing.
In one embodiment, the gas-water ratio in the nano-scale ceramic membrane tube is 1: 1-1: 100.
The invention has the advantages and beneficial effects that:
1. the invention integrates a BAF device and a micro-nano bubble generating device, and is different from the traditional BAF aeration mode, the nano ceramic membrane tube (the aperture range is 50 nm-5000 nm) is aerated into micro-nano bubbles, compressed air enters a gas chamber from a compressed air bottle through a gas rotameter to form high pressure, the high pressure gas enters the nano ceramic membrane tube through nano micropores on the surface of the nano ceramic membrane tube, high-speed water flow enters the nano ceramic membrane tube and then continuously cuts micro bubbles generated on the surface of the nano ceramic membrane tube to quickly form the micro-nano bubbles which are fully mixed with the high-speed water flow, the gas utilization rate is high, the gas consumption is low, the surface of a BAF reaction tank can not roll, the gas detention time is long, and the gas-liquid contact area is large.
2. According to the sewage circulating pump, sewage with low oxygen content in the water layer on the upper portion of the BAF enters the micro-nano bubble generating device through the basket filter, so that micro-nano gas in the sewage is cut into the water, the sewage carrying micro-nano bubbles passes through the BAF biological filler layer and is provided for oxygen content, COD in the sewage is decomposed and consumed by microorganisms, the COD removing efficiency is high, and the energy consumption is low.
3. The state of the mixture of bubbles with diameters between tens of micrometers (um) and hundreds of nanometers (nm) is called micro-nano bubbles. The aeration link can not be opened in the field of water treatment, and the physical and chemical properties of the bubbles are fundamentally changed when the bubbles are as small as less than ten microns. Compared with the traditional high-pressure dissolving and pressure-reducing foaming method, the micro-nano bubble generating device has the outstanding advantages in the aspects of bubble forming concentration, uniformity, energy conservation and consumption reduction, and is a new generation of high-efficiency energy-saving environment-friendly technology.
4. The invention is the combination of the micro-nano bubble generating device and the BAF device, the micro-nano bubble generating device provides micro-nano gas for the BAF device, so that the gas distribution is more uniform, the gas retention time is increased, the gas is easier to be absorbed by organisms, and the gas utilization efficiency is higher.
5. The invention can treat the waste water which needs multi-stage biochemical treatment or one-stage biochemical treatment in the industries of petroleum, petrochemical industry and the like.
6. The aeration mode of the invention is similar to a heat exchanger, except that: the external air source passes through the shell pass, and the water passes through the tube pass.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to facilitate an understanding of the invention, a full description thereof will be given below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
As shown in fig. 1, a micro-nano aeration BAF treatment device comprises a BAF device, a micro-nano bubble generation device and a backwashing device.
Wherein, the BAF device comprises a sewage inlet pump 1, a BAF reaction tank 11, a sewage circulating pump 13 and a basket filter.
Specifically, a BAF biological filler layer 15 is arranged in the middle of the BAF reaction tank 11. The upper water layer 17 of BAF is arranged above the corresponding BAF biological filler layer 15 in the BAF reaction tank 11. A BAF sewage inlet 111 and a circulating water inlet 113 are arranged on the side wall of the BAF reaction tank 11 and below the BAF biological filler layer 15. The upper water layer 17 of the BAF is provided with two first BAF water outlets 115 at its upper part. The lower part of the upper BAF water layer 17 is provided with a second BAF water outlet 117. A basket filter is arranged at the second BAF water outlet 117.
Specifically, the inlet of the sewage inlet pump 1 is communicated with the sewage tank 3. The outlet of the sewage inlet pump 1 is communicated with the BAF sewage inlet 111. The inlet of the sewage circulation pump 13 is in communication with the second BAF outlet 117. A first control valve 31 is arranged between the sewage pool 3 and the sewage inlet pump 1. A second control valve 33 is arranged between the sewage inlet pump 1 and the BAF sewage inlet 111. A third control valve 35 is arranged between the second BAF water outlet 117 and the sewage circulating pump 13, and a water outlet 118 is arranged at the bottom of the BAF reaction tank 11. A drain valve 119 is disposed at the drain port 118.
Wherein, the micro-nano bubble generating device comprises a micro-nano bubble generating device shell 5, a nano ceramic membrane tube 51, a liquid flowmeter 19, a gas rotameter 55, a gas pressure gauge 59 and a gas control valve 53.
Specifically, the nano-ceramic membrane tube 51 is sleeved in the micro-nano bubble generation device shell 5. The outer wall of the nano-scale ceramic membrane tube 51 and the inner wall of the micro-nano bubble generation device shell 5 enclose to form a gas chamber 52. The gas chamber 52 communicates with a compressed air tank 57 via a gas rotameter 55. A gas control valve 53 is provided between the gas rotameter 55 and the gas chamber 52.
Specifically, the micro-nano bubble generating device housing 5 is provided with a gas pressure gauge 59 for measuring the pressure of the gas in the gas chamber 52. One end of the nano-scale ceramic membrane tube 51 is communicated with the sewage circulating pump 13 sequentially through the fourth control valve 37, the liquid flowmeter 19 and the fifth control valve 39, and the other end is communicated with the circulating water inlet 113 sequentially through the sixth control valve 7 and the seventh control valve 71.
Wherein, the backwashing device comprises a backwashing water tank 9 and a backwashing pump 91.
Specifically, the backwash water tank 9 is communicated with the pipeline between the sixth control valve 7 and the seventh control valve 71 sequentially through an eighth control valve 93, a backwash pump 91 and a ninth control valve 95. A compressed air inlet line 97 is provided on the line between the seventh control valve 71 and the circulation water inlet 113, and a tenth control valve 99 is provided on the compressed air inlet line 97.
Wherein, the micro-nano bubble generating device shell 5 is cylindrical.
Specifically, the pore diameter of the nano-film pores on the surface of the nano-ceramic film tube 51 is 50 nm-5000 nm. The two ends of the nano-scale ceramic membrane tube 51 are provided with sealing rings for sealing. The gas-water ratio in the nano-scale ceramic membrane tube 51 is 1: 1-1: 100.
Working principle and working process of the invention
The process for treating organic wastewater by using the micro-nano aeration BAF treatment device comprises the following steps:
1) the backwash pump 91 is closed, and the ninth control valve 95, the tenth control valve 99, the drain valve 119, and the seventh control valve 71 are closed.
The sewage inlet pump 1 is started to pump the organic wastewater from the sewage tank 3 into the bottom of the BAF reaction tank 11 through the sewage inlet pump 1 and the BAF sewage inlet 111.
2) First treatment: the organic wastewater at the bottom of the BAF reaction tank 11 flows through the BAF biological filler layer 15, the biological filler digests organic matters in the wastewater, and the digested wastewater enters the upper water layer 17 of the BAF.
Starting the sewage circulating pump 13, opening the gas control valve 53 and the seventh control valve 71, filtering solid impurity particles in the wastewater by the basket filter, allowing the solid impurity particles to flow out through the first BAF water outlet 115 under the drive of the wastewater, and allowing the wastewater without the solid impurity particles to enter the nano-scale ceramic membrane tube 51 through the second BAF water outlet 117 and the basket filter and under the action of the sewage circulating pump 13 through the liquid flow meter 19; at this time, the compressed air in the compressed air tank 57 enters the gas chamber 52 through the gas rotameter 55 and the gas control valve 53, and the compressed air control pressure range is: 0.2MPa to 0.6MPa, and the compressed air (high-pressure air) in the gas chamber 52 enters the nano-film holes on the surface of the nano-ceramic film tube 51 to generate 'micro bubbles' continuously; the waste water (high-speed water flow) which enters the nano-scale ceramic membrane tube 51 through the sewage circulating pump 13 and does not contain solid impurity particles continuously cuts micro bubbles generated on the surface of the nano-scale ceramic membrane tube 51, so that the micro bubbles are quickly formed and filled in the whole nano-scale ceramic membrane tube 51, and then the waste water enters the bottom of the BAF reaction tank 11 through the sixth control valve 7, the seventh control valve 71 and the circulating water inlet 113.
3) The waste water at the bottom of the BAF reaction tank 11 obtained after the first treatment is subjected to the second treatment by repeating the step 2), and the circulation is performed until the drainage valve 119 is opened and the water discharged from the drainage port 118 meets the national sewage discharge standard.
During backwashing, the sewage inlet pump 1 and the sewage circulating pump 13 are firstly turned off, the sixth control valve 7, the second control valve 33, the third control valve 35 and the drain valve 119 are all closed, and the eighth control valve 93, the ninth control valve 95, the seventh control valve 71 and the tenth control valve 99 are all opened; pumping water in the backwashing water tank 9 into the bottom of the BAF reaction tank 11 through a backwashing pump 91 and a circulating water inlet 113, introducing compressed air into a compressed air inlet pipeline 97, introducing the compressed air into the bottom of the BAF reaction tank 11 through a tenth control valve 99 so as to perform air washing operation on the BAF reaction tank 11, and after air washing, opening a drain valve 119 and discharging the water through a water outlet 118.
The invention has the advantages and beneficial effects that:
1. the invention integrates a BAF device and a micro-nano bubble generating device, and is different from the traditional BAF aeration mode, the nano ceramic membrane tube 51 (the aperture range is 50 nm-5000 nm) is aerated into micro-nano bubbles, compressed air enters a gas chamber 52 from a compressed air bottle 57 through a gas rotor flow meter 55 to form high pressure, the high pressure gas enters the nano ceramic membrane tube 51 through nano micropores on the surface of the nano ceramic membrane tube 51, high-speed water flow enters the nano ceramic membrane tube 51 and then continuously cuts micro bubbles generated on the surface of the nano ceramic membrane tube 51 to quickly form the micro-nano bubbles which are fully mixed with the high-speed water flow, the gas utilization rate is high, the gas consumption is low, the surface of the BAF reaction tank 11 cannot be rolled, the gas retention time is long, and the gas-liquid contact area is large.
2. According to the invention, the sewage circulating pump 13 enables sewage with lower oxygen content in the water layer 17 on the upper portion of the BAF to enter the micro-nano bubble generating device through the basket filter, so that micro-nano gas in the sewage is cut into the water, the sewage carrying micro-nano bubbles is provided for oxygen content through the BAF biological filler layer 15, and COD in the sewage is decomposed and consumed by microorganisms, so that the COD removing efficiency is high, and the energy consumption is low.
3. The state of the mixture of bubbles with diameters between tens of micrometers (um) and hundreds of nanometers (nm) is called micro-nano bubbles. The aeration link can not be opened in the field of water treatment, and the physical and chemical properties of the bubbles are fundamentally changed when the bubbles are as small as less than ten microns. Compared with the traditional high-pressure dissolving and pressure-reducing foaming method, the micro-nano bubble generating device has the outstanding advantages in the aspects of bubble forming concentration, uniformity, energy conservation and consumption reduction, and is a new generation of high-efficiency energy-saving environment-friendly technology.
4. The invention is the combination of the micro-nano bubble generating device and the BAF device, the micro-nano bubble generating device provides micro-nano gas for the BAF device, so that the gas distribution is more uniform, the gas retention time is increased, the gas is easier to be absorbed by organisms, and the gas utilization efficiency is higher.
5. The invention can treat the waste water which needs multi-stage biochemical treatment or one-stage biochemical treatment in the industries of petroleum, petrochemical industry and the like.
6. The aeration mode of the invention is similar to a heat exchanger, except that: the external air source is connected with a shell layer and a water pipe layer.
The above-mentioned embodiments only express one embodiment of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. A micro-nano aeration BAF treatment device is characterized by comprising a BAF device, a micro-nano bubble generation device and a backwashing device;
the BAF device comprises a sewage inlet pump, a BAF reaction tank, a sewage circulating pump and a basket filter, wherein a BAF biological packing layer is arranged in the middle of the BAF reaction tank, a BAF upper water layer is arranged above the BAF biological packing layer in the BAF reaction tank, a BAF sewage inlet and a circulating water inlet are arranged below the BAF biological packing layer on the side wall of the BAF reaction tank, at least two first BAF water outlets are arranged on the upper part of the BAF upper water layer, a second BAF water outlet is arranged on the lower part of the BAF upper water layer, the basket filter is arranged at the second BAF water outlet, the inlet of the sewage inlet pump is communicated with the sewage tank, the outlet of the sewage inlet pump is communicated with the BAF sewage inlet, the inlet of the sewage circulating pump is communicated with the second BAF water outlet, a first control valve is arranged between the sewage tank and the sewage inlet, a second control valve is arranged between the sewage inlet pump and the BAF sewage inlet, and a third control valve is arranged, a water outlet is arranged at the bottom of the BAF reaction tank, and a drain valve is arranged at the water outlet;
the micro-nano bubble generating device comprises a micro-nano bubble generating device shell, a nano ceramic membrane tube, a liquid flowmeter, a gas rotameter, a gas pressure gauge and a gas control valve, wherein the nano ceramic membrane tube is sleeved in the micro-nano bubble generating device shell, the outer wall of the nano ceramic membrane tube and the inner wall of the micro-nano bubble generating device shell enclose a gas chamber, the gas chamber is communicated with a compressed air bottle through the gas rotameter, the gas control valve is arranged between the gas rotameter and the gas chamber, the micro-nano bubble generating device shell is provided with the gas pressure gauge, the device is used for measuring the pressure of gas in the gas chamber, one end of the nano-scale ceramic membrane tube is communicated with the sewage circulating pump sequentially through a fourth control valve, a liquid flowmeter and a fifth control valve, and the other end of the nano-scale ceramic membrane tube is communicated with the circulating water inlet sequentially through a sixth control valve and a seventh control valve;
the backwashing device comprises a backwashing water tank and a backwashing pump, the backwashing water tank is communicated with a pipeline between the sixth control valve and the seventh control valve sequentially through the eighth control valve, the backwashing pump and the ninth control valve, a compressed air inlet pipeline is arranged on the pipeline between the seventh control valve and the circulating water inlet, and a tenth control valve is arranged on the compressed air inlet pipeline.
2. The micro-nano aerated BAF treatment device of claim 1, wherein the micro-nano bubble generation device body is cylindrical.
3. The micro-nano aeration BAF treatment device according to claim 1, wherein the pore diameter of the nano-membrane pores on the surface of the nano-scale ceramic membrane tube is in the range of 50nm to 5000 nm.
4. The micro-nano aeration BAF treatment device according to claim 1, wherein sealing rings are arranged at two ends of the nano ceramic membrane tube for sealing.
5. The micro-nano aerated BAF treatment device of claim 1, wherein the gas-water ratio in the nano ceramic membrane tube is 1: 1-1: 100.
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| CN110143664A (en) * | 2018-12-10 | 2019-08-20 | 岳阳长岭设备研究所有限公司 | Micro-nano aeration BAF processing unit and treatment process |
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| CN113087132A (en) * | 2021-04-19 | 2021-07-09 | 宁波碧城生态科技有限公司 | Efficient aeration device for micro-nano bubbles in water in riverway and use method thereof |
| CN115141748A (en) * | 2022-06-14 | 2022-10-04 | 南京工业大学 | Microporous membrane tube reactor and application thereof in immobilized enzyme catalytic reaction |
| CN115448446A (en) * | 2022-10-11 | 2022-12-09 | 陕西商增汇通环保科技有限公司 | Status monitoring device for biological aerated filter |
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| US5316682A (en) * | 1993-03-25 | 1994-05-31 | Key Solutions, Inc. | Gas micronizer and purification system and related methods |
| CN102344120B (en) * | 2011-08-26 | 2013-03-20 | 东莞理工学院 | Ozone aeration and generating device and pollutant processing system formed by using same |
| CN203048659U (en) * | 2012-12-14 | 2013-07-10 | 蓝星环境工程有限公司 | Membrane bioreactor |
| CN104888636A (en) * | 2015-05-28 | 2015-09-09 | 中国石油化工股份有限公司 | Micro-nano bubble generation device and sewage purification system |
| CN104891616A (en) * | 2015-05-28 | 2015-09-09 | 中国石油化工股份有限公司 | Oily wastewater purification method and system |
| CN210085066U (en) * | 2018-12-10 | 2020-02-18 | 岳阳长岭设备研究所有限公司 | Micro-nano aeration BAF treatment device |
-
2019
- 2019-05-28 CN CN201920780915.7U patent/CN210085066U/en active Active
- 2019-05-28 CN CN201910437350.7A patent/CN110143664B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110143664A (en) * | 2018-12-10 | 2019-08-20 | 岳阳长岭设备研究所有限公司 | Micro-nano aeration BAF processing unit and treatment process |
| CN110143664B (en) * | 2018-12-10 | 2024-02-13 | 岳阳长岭设备研究所有限公司 | Micro-nano aeration BAF treatment device and treatment process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110143664A (en) | 2019-08-20 |
| CN110143664B (en) | 2024-02-13 |
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