Device for treating water by combining plasma and ozone

Abstract

The invention discloses a device for treating water by combining plasma with ozone, when the device is used, oxygen in an oxygen source enters a plasma generator to generate oxygen plasma, the oxygen plasma and the ozone are mixed in a pipeline mixer, and then mixed gas enters a high-pressure dissolved gas tank and is mixed with liquid in the tank; according to the present invention, the oxygen plasma is introduced into the reaction tower, and then enters each honeycomb ceramic aeration disc through the Venturi jet device so as to generate nano-bubbles in the reaction tower, such that the sewage is effectively treated, and the treatment efficiency of the organic pollutants can be effectively improved through the dual application of the oxygen plasma and the ozone.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a device for treating water by using plasma and ozone. Background Art

[0002] Ozone treatment is a common method for wastewater treatment. In wastewater treatment, the oxidation reaction between ozone and pollutants occurs in two main ways: direct oxidation and indirect oxidation. Direct oxidation involves a direct chemical reaction between ozone molecules and pollutants, while indirect oxidation involves the decomposition of ozone through technical means, generating hydroxyl radicals, which then oxidize organic matter.

[0003] The application of oxygen plasma in sewage treatment is mainly reflected in its strong oxidizing property, which can effectively degrade organic pollutants and sterilize. At present, oxygen plasma technology and ozone technology are mostly used separately in sewage treatment. For this reason, we propose a plasma-ozone composite water treatment device. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for treating water using plasma and ozone to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A device for treating water using plasma and ozone composites comprises a vacuum plasma generator, an ozone generator, a pipeline mixer, a nanobubble generator, and a reaction tower. The air inlet of the vacuum plasma generator is connected to an oxygen source, and the air outlet of the vacuum plasma generator is communicated with one air inlet of the pipeline mixer. An air compressor is installed at the air inlet of the ozone generator, and the air outlet of the ozone generator is communicated with another air inlet of the pipeline mixer. The nanobubble generator comprises a high-pressure air dissolving tank and a venturi ejector. The air inlet of the high-pressure air dissolving tank is communicated with the air outlet of the pipeline mixer via a variable frequency air compressor. A plurality of honeycomb ceramic aeration disks and baffles are arranged in the reaction tower from bottom to top, and the liquid outlet of the high-pressure air dissolving tank is communicated with each honeycomb ceramic aeration disk via a venturi ejector.

[0007] As a further solution of the present invention: the vacuum plasma generator includes a vacuum reaction chamber, the air inlet end of the vacuum reaction chamber is connected to the oxygen source through a molecular sieve dryer, and the vacuum reaction chamber is equipped with a plasma generator.

[0008] As a further solution of the present invention: the vacuum plasma generator also includes an industrial chiller, and a cooling water flow channel is installed on the plasma generator, and the inlet and outlet water interfaces of the cooling water flow channel are connected to the industrial chiller through pipelines.

[0009] As a further solution of the present invention: the gas outlet of the vacuum reaction chamber is connected to an air inlet of the pipeline mixer through a dry vacuum pump group.

[0010] As a further solution of the present invention: a reflux pipe is installed at the bottom of the outer wall of the reaction tower, the water outlet of the reflux pipe is connected to the water inlet of the high-pressure dissolved gas tank, and a circulating pump is installed on the reflux pipe.

[0011] As a further solution of the present invention: the pipeline mixer adopts a three-stage spiral blade mixer, and the surface of the spiral blade is sprayed with an anti-corrosion coating.

[0012] As a further solution of the present invention: the diameter of the air outlet holes of the honeycomb ceramic aeration disk is 15-30 μm.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] When the present invention is in use, oxygen in the oxygen source enters the plasma generator to generate oxygen plasma, the oxygen plasma and ozone are mixed in the pipeline mixer, and then the mixed gas enters the high-pressure dissolved gas tank and mixes with the liquid in the tank, and then enters each honeycomb ceramic aeration disk through the Venturi ejector to generate nanobubbles in the reaction tower, thereby effectively treating sewage. Through the dual application of oxygen plasma and ozone, the treatment efficiency of organic pollutants can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a structural block diagram of a device for treating water using plasma and ozone. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figure 1In an embodiment of the present invention, a device for treating water with plasma and ozone includes a vacuum plasma generator, an ozone generator, a pipeline mixer, a nanobubble generator, and a reaction tower. The air inlet of the vacuum plasma generator is connected to an oxygen source, which can be a liquid oxygen storage tank or an oxygen concentrator. The air outlet of the oxygen source is equipped with a steam-heated vaporizer. The air outlet of the vacuum plasma generator is connected to one air inlet of the pipeline mixer. The air inlet of the ozone generator is equipped with an air compressor, and the air outlet of the ozone generator is connected to the other air inlet of the pipeline mixer. The nanobubble generator includes a high-pressure dissolved air tank and a venturi ejector. The air inlet of the high-pressure dissolved air tank is connected to the air outlet of the pipeline mixer through a variable frequency air compressor. A plurality of honeycomb ceramic aeration disks and baffles are arranged from bottom to top in the reaction tower. The liquid outlet of the high-pressure dissolved air tank is connected to each honeycomb ceramic aeration disk through a venturi ejector. The air outlet of the honeycomb ceramic aeration disk has an aperture of 15-30 μm.

[0018] By adopting the above scheme, the present invention generates oxygen containing O, O, and O after the oxygen in the oxygen source enters the plasma generator. + 、e - Oxygen plasma (electron temperature 5-10eV) is generated, and then the oxygen plasma and ozone generated by the ozone generator are mixed in a pipeline mixer at a volume ratio of 1:1.5. The mixed gas then enters the high-pressure dissolved gas tank and mixes with the liquid in the tank. It then enters each honeycomb ceramic aeration disk through a Venturi ejector to generate nanobubbles in the reaction tower. The sewage to be treated enters through the sewage inlet at the bottom of the reaction tower and is discharged from the overflow port at the top of the reaction tower to fully contact with the nanobubbles in the reaction tower, thereby effectively treating the sewage. The dual application of oxygen plasma and ozone can effectively improve the treatment efficiency of organic pollutants.

[0019] The vacuum plasma generator includes a vacuum reaction chamber, the air inlet end of the vacuum reaction chamber is connected to an oxygen source through a molecular sieve dryer, and a plasma generator is installed on the vacuum reaction chamber. The plasma generator is powered by a power supply, and the power supply can be a medium frequency power supply (10-100kHz) or a radio frequency power supply (13.56MHz).

[0020] In one embodiment of the present invention, the vacuum plasma generator further includes an industrial chiller. A cooling water flow channel is installed on the plasma generator, and the inlet and outlet water interfaces of the cooling water flow channel are connected to the industrial chiller through pipes. In addition, a water-cooling jacket can also be fixedly installed on the outer wall of the vacuum reaction chamber. By connecting the water-cooling jacket to the industrial chiller, the vacuum reaction chamber can be cooled.

[0021] Through the use of industrial chillers, cooling water channels and water cooling jackets, the vacuum plasma generator can be effectively cooled to ensure its long-term stable operation.

[0022] Specific combination Figure 1 In one embodiment of the present invention, the gas outlet of the vacuum reaction chamber is connected to a gas inlet of a pipeline mixer through a dry vacuum pump group.

[0023] In addition, in one embodiment of the present invention, a reflux pipe is installed at the bottom of the outer wall of the reaction tower, the water outlet of the reflux pipe is connected to the water inlet of the high-pressure dissolved air tank, and a circulation pump is installed on the reflux pipe.

[0024] By setting up a circulation pump, the waste water in the reaction tower can be introduced into the high-pressure dissolved gas tank to be mixed with the mixed gas, thereby reducing the waste of tap water.

[0025] In one embodiment of the present invention, the pipeline mixer adopts a three-stage spiral blade mixer, and the surface of the spiral blade is sprayed with an anti-corrosion coating. Specifically, the three-stage spiral blade is three groups of 180° staggered spiral blades (lead angle 45°), wherein,

[0026] Stage 1: right-handed blades (lead 100 mm, thickness 3 mm), used to split the high-speed airflow into spiral streams;

[0027] Stage 2: Left-handed blades (lead 80 mm, thickness 2.5 mm) generate reverse vortex flow and enhance molecular diffusion;

[0028] Stage 3: Right-handed blades (lead 60 mm, thickness 2 mm) eliminate concentration gradients and achieve nanoscale mixing.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for treating water with plasma and ozone, characterized in that: The invention comprises a vacuum plasma generator, an ozone generator, a pipeline mixer, a nanobubble generator and a reaction tower. The air inlet of the vacuum plasma generator is connected to an oxygen source, the air outlet of the vacuum plasma generator is communicated with one air inlet of the pipeline mixer, the air inlet of the ozone generator is installed with an air compressor, and the air outlet of the ozone generator is communicated with another air inlet of the pipeline mixer. The nanobubble generator comprises a high-pressure air dissolving tank and a venturi ejector. The air inlet of the high-pressure air dissolving tank is communicated with the air outlet of the pipeline mixer via a variable frequency air compressor. A plurality of honeycomb ceramic aeration disks and baffles are arranged in the reaction tower from bottom to top. The liquid outlet of the high-pressure air dissolving tank is communicated with each honeycomb ceramic aeration disk via a venturi ejector.

2. The device for treating water with plasma and ozone according to claim 1, characterized in that: The vacuum plasma generator comprises a vacuum reaction chamber, an air inlet end of the vacuum reaction chamber is connected to an oxygen source through a molecular sieve dryer, and a plasma generator is installed on the vacuum reaction chamber.

3. The device for treating water with plasma and ozone according to claim 2, characterized in that: The vacuum plasma generator also includes an industrial chiller. A cooling water flow channel is installed on the plasma generator, and the inlet and outlet water interfaces of the cooling water flow channel are both connected to the industrial chiller through pipelines.

4. The device for treating water with plasma and ozone according to claim 1, characterized in that: The air outlet of the vacuum reaction chamber is communicated with an air inlet of the pipeline mixer through a dry vacuum pump group.

5. The device for treating water with plasma and ozone according to claim 1, characterized in that: A reflux pipe is installed at the bottom of the outer wall of the reaction tower, the water outlet end of the reflux pipe is connected to the water inlet of the high-pressure dissolved gas tank, and a circulating pump is installed on the reflux pipe.

6. The device for treating water with plasma and ozone according to claim 1, characterized in that: The pipeline mixer adopts a three-stage spiral blade mixer, and the surface of the spiral blade is sprayed with an anti-corrosion coating.

7. The device for treating water with plasma and ozone according to claim 1, characterized in that: The diameter of the air outlet holes of the honeycomb ceramic aeration plate is 15-30 μm.

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