A micro-nano bubble device and its application

Abstract

The present invention relates to the field of nano bubble preparation, and particularly discloses a micro-nano bubble device and its application. The micro-nano bubble device comprises a device housing, on which a water inlet, a water outlet and a device air inlet are installed, and is characterized in that a siphon suction flow tank, a multi-stage booster water pump and a mixing tank A and a mixing tank B connected in series are installed in the device housing, the water inlet is connected to the siphon suction flow tank, the bottom water outlet of the siphon suction flow tank is connected to the multi-stage booster water pump through a millimeter bubble generator, the outlet of the multi-stage booster water pump is connected to the mixing tank A, the outlet of the mixing tank B is connected to the micro-nano bubble generator through a pipeline, and the micro-nano bubble generator is connected to the water outlet. The present invention has a simple structure, stable operation, large flow rate, small bubble particle size, can generate a large number of nano-micro bubbles based on water, has low operating costs, and has a quick effect on wastewater treatment, and is suitable for wide promotion and application.

Description

1. Technical field

[0002] The invention relates to the field of nano bubble preparation, and in particular to a micro-nano bubble device and application thereof. (II) Background technology

[0004] At present, micron and nano bubble water are getting more and more attention from people, and are applied to sewage treatment, waste gas treatment, aquaculture, soilless cultivation, fruit and vegetable washing, bathing health care, ecological restoration, health care and many other fields, but most of the existing micron and nano bubbles are around 50nm-40μm, and the production process is complicated, the production volume is small, and it cannot meet the application of large-scale engineering machinery. According to existing research, when the particle size of microbubbles is smaller, the longer they stay in the water, such as explosion energy, molecular energy, ionization energy and other energies are stronger and the effect is better, so there is an urgent need for a nano-microbubble device that can produce smaller particle size and larger flow rate to meet the demand.

[0005] The traditional solid-liquid separation of paint spray wastewater requires adding a large amount of chemicals to the paint spray wastewater to cause the paint mist to flocculate and agglomerate, and then the solid-liquid separation is performed through solid-liquid separation equipment. However, in actual operation, the large amount of chemicals added to the wastewater lasts for about 7-8 hours, and the flocculation efficiency of the chemicals is about 60%. The cost of the chemicals greatly increases the operating cost of the entire system, and increases the weight of the solids, which adds additional costs for the subsequent hazardous waste or solid waste treatment of the solids. In addition, the chemicals cannot remove the irritating smell and odor generated by the paint mist in the water. (III) Summary of the invention

[0007] In order to make up for the deficiencies of the prior art, the present invention provides a micro-nano bubble device with simple structure, stable operation, large flow rate and small bubble particle size and its application.

[0008] The present invention is achieved through the following technical solutions:

[0009] A micro-nano bubble device comprises a device shell, on which a water inlet, a water outlet and a device air inlet are installed, and the device shell is characterized in that a siphon suction flow tank, a multi-stage booster water pump and a mixing tank A and a mixing tank B connected in series are installed in the device shell, the water inlet is connected to the siphon suction flow tank, the bottom water outlet of the siphon suction flow tank is connected to the multi-stage booster water pump through a millimeter bubble generator, the outlet of the multi-stage booster water pump is connected to the mixing tank A, the outlet of the mixing tank B is connected to the micro-nano bubble generator through a pipeline, and the micro-nano bubble generator is connected to the water outlet.

[0010] The invention connects a millimeter bubble generator, a multi-stage booster water pump and a micro-nano bubble generator between water pipes to send gas into water, gradually reduce the fineness of the bubbles, and finally generate micro-nano bubbles.

[0011] A better technical solution of the present invention is:

[0012] An electrical control cabinet is installed in the device housing, and an electrical control panel and control buttons are installed on the surface of the device housing, which is convenient for installation, debugging and maintenance.

[0013] An air inlet solenoid valve is installed on the air inlets of the millimeter bubble generator and the micro-nano bubble generator, and the air inlets of the two generators are connected in parallel to the air inlet of the equipment, and a gas flow meter is installed on the air inlet of the equipment.

[0014] Further preferably, the air intake solenoid valve and the gas flow meter are respectively connected to an electrical control cabinet.

[0015] The top of the mixing tank A is provided with a pressure gauge interface connected to a pressure gauge to detect the actual working pressure of the equipment; the top of the mixing tank B is installed with an automatic exhaust valve to filter large bubbles above the centimeter level and discharge excess gas; a pressure sensor is installed on the connecting pipe between the mixing tank B and the micro-nano bubble generator, and the action of the air intake electromagnetic is controlled by the pressure sensor.

[0016] Further preferably, the pressure gauge, automatic exhaust valve, and pressure sensor are respectively connected to an electrical control cabinet.

[0017] When the pressure detected by the pressure sensor reaches the set value, the solenoid valve automatically opens to start the gas entering, and the gas flow rate is adjusted and monitored by the gas flow meter.

[0018] The application of the above-mentioned micro-nano bubble equipment in the solid-liquid separation treatment of paint spraying wastewater is specifically applied in the following manner: the air inlet of the micro-nano bubble equipment is connected to the ozone generator, and the water outlet of the micro-nano bubble equipment is connected to the paint spraying room pool containing the paint spraying wastewater. The flocculated paint spraying wastewater enters the solid-liquid separator through the sludge lifting pump, and the water separated by the solid-liquid separator is sent back to the paint spraying room for reuse, and the paint residue is recovered and treated.

[0019] The present invention adopts the method of micro-nano bubbles + ozone. Through the physical properties of micro-nano bubbles such as surface negative charge, explosion energy, molecular dynamics, etc., the micro-nano bubbles are attached to the surface of the paint mist. Under the action of molecular kinetic energy and explosion energy, the paint mist is condensed into large particles and agglomerates. After the micro-nano bubbles explode, they react with the ozone wrapped by the micro-nano bubbles to generate hydroxyl free radicals. The organic matter in the paint mist can be decomposed and oxidized by the hydroxyl free radicals, thereby fundamentally solving the odor in the paint spraying wastewater.

[0020] Preferably, the water separated by the solid-liquid separator is filtered through a parallel filter and connected to the water inlet of the micro-nano bubble device through a pipeline to achieve the reuse of the recovered waste water.

[0021] The invention has the advantages of simple structure, stable operation, large flow rate, small bubble particle size, and can generate a large amount of nano-microbubbles in water, with a foaming amount of 1m³ / h-100m³ / h, low operation cost, and quick wastewater treatment effect, and is suitable for wide promotion and application. (IV) Description of the drawings

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0025] Figure 2 It is a rear view structural schematic diagram of the present invention;

[0026] Figure 3 It is a schematic diagram of the top view of the structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the application process of the present invention.

[0028] In the figure, 1 is the water inlet, 2 is the water outlet, 3 is the equipment air inlet, 4 is the siphon flow tank, 5-1 is the mixing tank A, 5-2 is the mixing tank B, 6 is the multi-stage booster water pump, 7 is the pressure sensor, 8 is the pressure gauge interface, 9 is the automatic exhaust valve, 10 is the mm bubble generator, 11 is the micro-nano bubble generator, 12 is the generator air inlet, 13 is the pressure gauge, 14 is the gas flow meter, 15 is the electrical control cabinet, 16 is the control button, 17 is the air inlet solenoid valve, 18 is the micro-nano bubble equipment, 19 is the ozone generator, 20 is the paint room pool, 21 is the sludge lifting pump, 22 is the solid-liquid separator, and 23 is the filter. (V) Specific implementation methods

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0031] Example 1: A micro-nano bubble device

[0032] As attached Figure 1-3 As shown, the embodiment includes an equipment shell, on which a water inlet 1, a water outlet 2 and an equipment air inlet 3 are installed, and a siphon suction flow tank 4, a multi-stage booster water pump 6 and a mixing tank A5-1 and a mixing tank B5-2 connected in series are installed in the equipment shell, the water inlet 1 is connected to the siphon suction flow tank 4, the bottom water outlet of the siphon suction flow tank 4 is connected to the multi-stage booster water pump 6 through the millimeter bubble generator 10, the outlet of the multi-stage booster water pump 6 is connected to the mixing tank A5-1, and the outlet of the mixing tank B5-2 is connected to the micro-nano bubble generator 11 through a pipeline, and the micro-nano bubble generator 11 is connected to the water outlet 2.

[0033] The water in the siphon suction tank 4 is sprayed by the millimeter bubble generator 10, and the water flow is converted into a millimeter-level bubble flow and enters the multi-stage booster water pump 6. After the boosting effect, the high-pressure bubble water achieves pressure balance and bubble stability in the mixing tank A5-1 and the mixing tank B5-2 connected in series, and is then sent to the micro-nano bubble generator 11. The micro-nano-level bubbles finally generated are sprayed out from the water outlet 2 to achieve the preparation of micro-nano bubbles.

[0034] The pressure gauge interface 8 is installed on the top of the mixing tank A5-1 and connected to the pressure gauge 13 to detect the actual working pressure of the equipment; the automatic exhaust valve 9 is installed on the top of the mixing tank B5-2 to filter large bubbles above the centimeter level and remove excess gas; the pressure sensor 7 is installed on the pipeline connecting the outlet of the mixing tank B5-2 and the inlet of the micro-nano bubble generator 11, and the action of the air intake solenoid valve 17 is controlled by the pressure sensor 7; the air inlet 3 of the equipment is connected to the inlet of the gas flow meter 14, the outlet of the gas flow meter 14 is connected to the inlet of the air intake solenoid valve 17, and the inlet of the air intake solenoid valve 17 is connected to the air intake of the millimeter bubble generator 10 / micro-nano bubble generator 11. When the pressure detected by the pressure sensor 7 reaches the set value, the air intake solenoid valve 17 is automatically opened to start the gas to enter, and the air intake flow is adjusted and monitored by the gas flow meter 14. The control panel of the electrical control cabinet 15 is installed on the outer surface of the equipment shell, which is convenient for installation, commissioning and maintenance.

[0035] Example 2: Application of micro-nano bubble equipment in solid-liquid separation treatment of paint spraying wastewater

[0036] The air inlet 3 of the micro-nano bubble device 18 of the present invention is connected to the ozone generator 19, and the water outlet 2 of the micro-nano bubble device 18 is connected to the paint spraying room pool 20 containing paint spraying wastewater. The flocculated paint spraying wastewater enters the solid-liquid separator 22 through the sludge lifting pump 21, and the water separated by the solid-liquid separator 22 is sent back to the paint spraying room for reuse, and the paint residue is recovered and processed.

[0037] The water separated by the solid-liquid separator can also be filtered by a parallel filter 23 and connected to the water inlet 1 of the micro-nano bubble device 18 through a pipeline to realize the reuse of the recovered waste water.

[0038] The present invention adopts the method of micro-nano bubbles + ozone. Through the physical properties of micro-nano bubbles such as surface negative charge, explosion energy, molecular dynamics, etc., the micro-nano bubbles are attached to the surface of the paint mist. Under the action of molecular kinetic energy and explosion energy, the paint mist is condensed into large particles and agglomerates. After the micro-nano bubbles explode, they react with the ozone wrapped by the micro-nano bubbles to generate hydroxyl free radicals. The organic matter in the paint mist can be decomposed and oxidized by the hydroxyl free radicals, thereby fundamentally solving the odor in the paint spraying wastewater.

[0039] Through the method of micro-nano bubbles + ozone, the paint mist in the paint powder water has a high flocculation efficiency, which can reach more than 95%, and the treatment effect is fast, and flocculation and agglomeration can be achieved in 1 hour.

[0040] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A micro-nano bubble device, comprising a device housing, on which a water inlet (1), a water outlet (2) and a device air inlet (3) are mounted, characterized in that: A siphon suction flow tank (4), a multi-stage booster water pump (6), and a mixing tank A (5-1) and a mixing tank B (5-2) connected in series are installed in the housing of the device; the water inlet (1) is connected to the siphon suction flow tank (4); the bottom water outlet of the siphon suction flow tank (4) is connected to the multi-stage booster water pump (6) via a millimeter bubble generator (10); the outlet of the multi-stage booster water pump (6) is connected to the mixing tank A (5-1); the outlet of the mixing tank B (5-2) is connected to the micro-nano bubble generator (11) via a pipeline; and the micro-nano bubble generator (11) is connected to the water outlet (2); An electrical control cabinet (15) is installed in the device housing, and an electrical control panel and control buttons (16) are installed on the surface of the device housing; An air inlet solenoid valve (17) is installed on the generator air inlet (12) of the millimeter bubble generator (10) and the micro-nano bubble generator (11), and the two generator air inlets (12) are connected in parallel to the device air inlet (3), and a gas flow meter (14) is installed on the device air inlet (3); The top of the mixing tank A (5-1) is provided with a pressure gauge interface (8) connected to a pressure gauge (13), the top of the mixing tank B (5-2) is provided with an automatic exhaust valve (9), and the connecting pipe between the mixing tank B (5-2) and the micro-nano bubble generator (11) is provided with a pressure sensor (7).

2. The micro-nano bubble device according to claim 1, characterized in that: The air intake solenoid valve (17) and the gas flow meter (14) are respectively connected to the electrical control cabinet (15).

3. The micro-nano bubble device according to claim 1, characterized in that: The pressure gauge (13), the automatic exhaust valve (9), and the pressure sensor (7) are respectively connected to an electrical control cabinet (15).

4. Application of the micro-nano bubble device according to claim 1 in solid-liquid separation treatment of paint spraying wastewater.

5. The use according to claim 4, characterized in that: The device air inlet (3) of the micro-nano bubble device (18) is connected to the ozone generator (19), and the water outlet (2) of the micro-nano bubble device (18) is connected to the paint spraying room pool (20) containing paint spraying wastewater. The flocculated paint spraying wastewater enters the solid-liquid separator (22) through the sludge lifting pump (21), and the water separated by the solid-liquid separator (22) is sent back to the paint spraying room for reuse, and the paint residue is recovered and processed.

6. The use according to claim 5, characterized in that: The water separated by the solid-liquid separator (22) is filtered by a parallel filter (23) and connected to the water inlet (1) of the micro-nano bubble device (18) through a pipeline.

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