CN214400042U - High-efficient ozone catalytic oxidation reaction integrated device - Google Patents
High-efficient ozone catalytic oxidation reaction integrated device Download PDFInfo
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- CN214400042U CN214400042U CN202022526425.XU CN202022526425U CN214400042U CN 214400042 U CN214400042 U CN 214400042U CN 202022526425 U CN202022526425 U CN 202022526425U CN 214400042 U CN214400042 U CN 214400042U
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Abstract
The utility model discloses a high-efficiency ozone catalytic oxidation reaction integrated device, which comprises a first sewage delivery pump, a solid-liquid premixer, a second sewage delivery pump, an ejector and an ozone reaction tower; the first sewage delivery pump, the ejector and the ozone reaction tower are sequentially communicated through a pipeline; the solid-liquid premixer comprises a solid-liquid premixing pipeline, a solid-liquid premixing chamber and a powder storage bin; the dosing port of the solid-liquid premixing chamber is communicated with the powder storage bin; the solid-liquid premixing chamber is connected in parallel to a pipeline between the first sewage delivery pump and the ejector through a solid-liquid premixing pipeline; the second sewage delivery pump is arranged on a solid-liquid premixing pipeline between the solid-liquid premixing chamber and the ejector; and the air inlet of the ejector is communicated with the air outlet of the ozone generator. The utility model discloses a high-efficient ozone catalytic oxidation reaction integrated device has improved the gas-liquid solid mixing efficiency, and the waste water treatment effect is stable.
Description
Technical Field
The utility model relates to an ozone catalytic oxidation degree of depth water treatment technology especially relates to a high-efficient ozone catalytic oxidation reaction integrated device.
Background
With the increasing environmental protection situation in China, the requirements on the wastewater discharge index are also rapidly improved. Therefore, various advanced treatment technologies for wastewater are also put into use.
Ozone is used as a clean oxidant, and ozone oxidation has the advantages of complete reaction, high speed, no secondary pollution and the like, and is widely applied to sewage treatment, wherein in industrial wastewater treatment, the ozone oxidation is mainly applied to decolorization treatment of dyes in textile industrial wastewater, removal of organic compounds in oil refining wastewater, treatment of garbage leachate, treatment of papermaking wastewater, treatment of sludge in sewage treatment plants and the like.
In order to improve the utilization rate of ozone and the efficiency of sewage treatment, the mode of catalytic oxidation of ozone is generally adopted for sewage treatment at present.
The ozone catalytic oxidation reactor researched and applied at present mainly comprises two reactors, wherein one reactor is a fixed bed type, a catalyst is filled at the bottom of the reactor, and wastewater/ozone passes through a catalyst bed layer from bottom to top from the bottom of the reactor to generate catalytic oxidation reaction; the other is a fluidized bed type, and the catalyst is fluidized in a reactor by means of external force and is fully contacted with sewage/ozone to perform catalytic reaction.
The fixed bed type ozone reactor has the effects of catalysis and filtration, but the catalyst is easy to block and malfunction, and the backwashing is frequent. The fluidized bed type ozone reactor has good mass transfer effect, high reaction efficiency, high energy consumption and needs to consume power and fluidize a catalyst.
In addition, because the quality of industrial wastewater fluctuates greatly, the ozone addition amount is large for ensuring that the wastewater stably reaches the discharge standard, and the treatment cost is increased. The low solubility of ozone in water and the high treatment cost restrict the application and development of ozone oxidation technology.
The existing ozone catalytic oxidation reactor generally feeds ozone in an aeration mode of an ejector, the ejector is structurally shown in figure 1 and comprises a nozzle 61, an suction chamber 62 and a mixing chamber 63, and the suction chamber 62 is provided with an air inlet 66. Liquid with certain pressure enters from a water inlet 64, is sprayed out at high speed through a nozzle orifice 65 of the nozzle, pressure energy is converted into velocity energy, vacuum is formed in an outlet area (namely a suction chamber 62) of the nozzle 61, gas is sucked from a gas inlet 66, the liquid and the gas sequentially enter a mixing chamber 63 through an incident port 67 and a diffusion port 68, are mixed in the mixing chamber 63, and are finally discharged from a water outlet 69. However, the gas-liquid mixing efficiency of the conventional ejector needs to be improved, so that the mass transfer efficiency of ozone in the reactor is poor.
Therefore, how to improve the mass transfer efficiency of ozone, and improving the ozone oxidation efficiency and the ozone utilization rate become the key for popularizing the industrial application of ozone.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high-efficient ozone catalytic oxidation reaction integrated device, the device have improved the solid mixing efficiency of gas-liquid, and the waste water treatment effect is stable.
The technical scheme of the utility model as follows:
an efficient ozone catalytic oxidation reaction integrated device comprises a first sewage delivery pump, a solid-liquid premixer, a second sewage delivery pump, an ejector and an ozone reaction tower;
the first sewage delivery pump, the ejector and the ozone reaction tower are sequentially communicated through a pipeline;
the solid-liquid premixer comprises a solid-liquid premixing pipeline, a solid-liquid premixing chamber and a powder storage bin; the dosing port of the solid-liquid premixing chamber is communicated with the powder storage bin; the solid-liquid premixing chamber is connected in parallel to a pipeline between the first sewage delivery pump and the ejector through a solid-liquid premixing pipeline; the second sewage delivery pump is arranged on a solid-liquid premixing pipeline between the solid-liquid premixing chamber and the ejector;
and the air inlet of the ejector is communicated with the air outlet of the ozone generator.
A part of the sewage to be treated enters a solid-liquid premixing chamber through a first sewage delivery pump, meanwhile, the powder catalyst in the powder storage bin is fed into the solid-liquid premixing chamber through a dosing port, and the sewage and the powder catalyst are premixed in the solid-liquid premixing chamber; and the other part of sewage is converged with the sewage after the solid-liquid premixing, enters an ejector, simultaneously ozone enters the ejector from an air inlet of the ejector, the sewage, the powder catalyst and the ozone are fully mixed in the ejector to carry out the catalytic ozonation reaction, and then the gas, the solid and the liquid are fully mixed and enter an ozone reaction tower to carry out the deep catalytic ozonation reaction.
The novel high-efficient ozone catalytic oxidation reaction integrated device of this experiment has improved the mass transfer efficiency of the mixing efficiency of gas, solid, liquid and ozone, and then has promoted ozone oxidation efficiency, has overcome the defect that traditional fixed bed formula ozone reactor and fluidized bed formula ozone reactor exist.
The first sewage delivery pump is a centrifugal pump, and the second sewage delivery pump is a diaphragm pump.
Preferably, a stirrer is arranged in the solid-liquid premixing chamber. The powder catalyst and the sewage are fully premixed under the stirring action of the stirrer.
Preferably, a flowmeter and a control valve are arranged on the solid-liquid premixing pipeline.
In order to improve the mixing efficiency of sewage, powder catalyst and ozone three, the utility model discloses improve conventional ejector. Preferably, the ejector forms a reaction zone at the rear end of the mixing chamber by extending the mixing chamber; a mixing zone is formed between the incident port and the diffusion port, and the rear end of the diffusion port is provided with a diffusion zone and a reaction zone.
The sewage and the powder are fixedly premixed in a mixing zone for mixing, the ozone catalytic oxidation reaction can be carried out in a diffusion zone and a reaction zone, if the COD of the inlet water is low, the reaction can be finished in the reaction zone of the ejector, and the discharge requirement can be directly met without entering a subsequent ozone reaction tower.
Preferably, the ratio of the entrance diameter to the exit diameter is 0.7-0.8: 1. the ratio of the entrance diameter to the exit diameter of the jet ejector is 0.7-0.8: when 1, the nozzle pressure of the jet device is about 2.5 times of the pressure of the incident port.
Preferably, the distance between the jet orifice and the entrance port of the jet device is 0.3-0.5 times of the diameter of the entrance port; the distance between the entrance port and the diffusion port of the jet device is 6-8 times of the diameter of the entrance port.
Preferably, the angle of the entrance port of the jet device is 119-121 °; the angle of the diffusion opening is 5 degrees; the angle of the spout is 24-26 deg..
The utility model adopts the above special design's special parameter after for powder catalyst, sewage, ozone three-phase mixing are abundant, have improved the utilization ratio of ozone and catalyst.
Further preferably, the ratio of the entrance diameter to the exit diameter of the ejector is 0.74: 1; the distance between the jet orifice of the jet device and the entrance port is 0.4 times of the diameter of the entrance port; the distance between the entrance port and the diffusion port of the jet device is 7 times of the diameter of the entrance port; the angle of the entrance port of the jet device is 120 degrees; the angle of the diffusion opening is 5 degrees; the angle of the spout is 25 °.
Preferably, a recovery mechanism of the powder catalyst is arranged at the water outlet of the ozone reactor.
By adopting the technical scheme, the utilization efficiency of the ozone and the catalyst is optimal.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model fully mixes the powder catalyst, the sewage and the ozone through the solid-liquid premixer and the ejector, thereby not only improving the gas-liquid-solid mixing efficiency and saving the ozone adding amount, but also realizing the maximized catalytic ozonation of organic matters by the powder catalyst, improving the impact load resistance of the device and stabilizing the wastewater treatment effect;
(2) the utility model discloses a solid-liquid premixer and ejector are with powder catalyst, sewage, ozone three-phase intensive mixing, can overcome the easy jam of catalyst and malfunctioning technical problem that fixed bed formula ozone reactor exists, compare with fluidized bed formula ozone reactor, and the energy consumption is less.
Drawings
FIG. 1 is a schematic structural diagram of an ejector;
fig. 2 is a schematic structural diagram of the high-efficiency ozone catalytic oxidation reaction integrated device of the present invention.
Detailed Description
In order to further illustrate the technical means and effects of the present invention, the high efficiency ozone catalytic oxidation integrated device of the present invention will be described in detail with reference to the preferred embodiments and the accompanying drawings.
As shown in figure 2, the main body of the high-efficiency ozone catalytic oxidation reaction integrated device comprises a centrifugal pump 2, a medicine box 3, a solid-liquid premixing chamber 4, a diaphragm pump 5, a jet device 6 and an ozone reaction tower 7, and all the components are communicated through pipelines.
The front end of the centrifugal pump 2 can be a sewage tank 1. After passing through a centrifugal pump 2, a part of sewage in a sewage tank 1 enters a solid-liquid premixing chamber 4 through a premixing pipeline, meanwhile, a powder catalyst is added into the solid-liquid premixing chamber 4 through a medicine box 3, and the powder catalyst and the sewage are uniformly mixed in the solid-liquid premixing chamber 4 through stirring of a stirrer 10; a flow meter 8 is arranged on a premixing pipeline at the front end of the solid-liquid premixing chamber 4 to control the inflow, a valve 9 is also arranged, and the centrifugal pump 2 is arranged on a premixing pipeline at the rear end of the solid-liquid premixing chamber 4; the other part of sewage is converged with the outlet water of the solid-liquid premixing chamber 4 and enters the ejector 6, the air inlet 66 of the ejector 6 is communicated with the air outlet of the ozone generator, and the powder catalyst, the sewage and the ozone are fully mixed through the ejector 6 and then enter the ozone reactor 7 for deep oxidation.
In order to improve the mixing efficiency of the jet device 6, the utility model discloses carry out unique design to the jet device 6. Firstly, a reaction area is formed at the rear end of the mixing chamber 63 by extending the mixing chamber 63; secondly, the pressure of the water inlet end of the ejector 6 is kept at 5kg, and in order to keep the pressure of the rear end of the ejector 6 at 2kg, the diameter of the incident port 67 of the ejector 6 is set to be 0.7 times of the diameter of the jet orifice 65; in addition, the distance between the entrance port 67 and the ejection port 65 of the jet device 6 is 0.4 times the diameter of the entrance port 67, and the distance between the entrance port 67 and the diffusion port 68 is 7 times the diameter of the entrance port 67; the angle of the entrance port 67 of the jet device 6 is 120 °; the angle of the diffuser 68 is 5 °; the angle of contraction of the spout 65 is 25 °.
A mixing zone is formed between the incident port 67 and the diffusion port 68 of the jet device, a diffusion zone and a reaction zone are formed between the diffusion port 68 and the water outlet 69, and after the powder catalyst, the sewage and the ozone are fully mixed in the mixing zone, the catalytic oxidation reaction of the ozone is started in the diffusion zone and the reaction zone, so that if the COD of the inlet water is low, the reaction can be finished in the reaction zone of the jet device, and the discharge requirement can be directly met without entering a subsequent ozone reaction tower.
The utility model discloses a self-control ejector has not only improved gas-liquid mixing efficiency, saves ozone and throws the volume of adding, can also make the catalytic ozonation organic matter of powder catalyst maximize, improves device shock resistance load capacity, and the waste water treatment effect is stable, can effectively solve the technical problem among the waste water deep treatment.
The ozone reaction tower 7 is cylindrical, the length-diameter ratio is large, a water distribution pipeline is arranged in the ozone reaction tower, the treated water is discharged through the pipeline, and the treated powder catalyst is recycled.
The utility model discloses the device can make the solid three-phase of gas-liquid fully react, and the maximize improves catalysis ozonization efficiency, can improve present ozone oxidation efficiency to more than 90%. If the COD of the inlet water is low, the reaction can be finished in the reaction zone of the ejector, and the discharge requirement can be directly met without entering a subsequent ozone reaction tower; if the COD of the inflow water is high, after passing through the jet device, organic pollutants in the water are oxidized and decomposed under the action of the catalyst, the organic matters which are difficult to degrade are subjected to ring opening and chain scission, and macromolecules are changed into micromolecules, so that the retention time of a subsequent ozone reaction tower is shortened.
The utility model discloses a device shock load resistance ability has simultaneously significantly reduced ozone input volume, has reduced the treatment cost of sewage.
The above description is only exemplary of the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the present invention.
Claims (9)
1. An efficient ozone catalytic oxidation reaction integrated device is characterized by comprising a first sewage delivery pump, a solid-liquid premixer, a second sewage delivery pump, an ejector and an ozone reaction tower;
the first sewage delivery pump, the ejector and the ozone reaction tower are sequentially communicated through a pipeline;
the solid-liquid premixer comprises a solid-liquid premixing pipeline, a solid-liquid premixing chamber and a powder storage bin; the dosing port of the solid-liquid premixing chamber is communicated with the powder storage bin; the solid-liquid premixing chamber is connected in parallel to a pipeline between the first sewage delivery pump and the ejector through a solid-liquid premixing pipeline; the second sewage delivery pump is arranged on a solid-liquid premixing pipeline between the solid-liquid premixing chamber and the ejector;
and the air inlet of the ejector is communicated with the air outlet of the ozone generator.
2. The integrated device for high efficiency catalytic ozonation reaction according to claim 1, wherein a stirrer is disposed in the solid-liquid premixing chamber.
3. The integrated device for high efficiency catalytic ozonation reaction according to claim 1, wherein a flow meter and a control valve are arranged on the solid-liquid premixing pipeline.
4. The integrated device for high efficiency catalytic ozonation reaction according to claim 1, wherein the ejector forms a reaction zone at the rear end of the mixing chamber by extending the mixing chamber; a mixing zone is formed between the incident port and the diffusion port, and the rear end of the diffusion port is provided with a diffusion zone and a reaction zone.
5. The high-efficiency ozone catalytic oxidation integrated device according to claim 1 or 4, wherein the ratio of the entrance diameter to the exit diameter of the ejector is 0.7-0.8: 1.
6. the high-efficiency ozone catalytic oxidation integrated device according to claim 1 or 4, wherein the distance between the jet orifice and the entrance port of the jet device is 0.3-0.5 times the diameter of the entrance port; the distance between the entrance port and the diffusion port of the jet device is 6-8 times of the diameter of the entrance port.
7. The integrated device for the high efficiency catalytic ozonation reaction according to claim 1 or 4, wherein the angle of the entrance port of the ejector is 119-121 °; the angle of the diffusion opening is 5 degrees; the angle of the spout is 24-26 deg..
8. The high-efficiency ozone catalytic oxidation integrated device according to claim 1 or 4, wherein the ratio of the entrance diameter to the exit diameter of the ejector is 0.74: 1; the distance between the jet orifice of the jet device and the entrance port is 0.4 times of the diameter of the entrance port; the distance between the entrance port and the diffusion port of the jet device is 7 times of the diameter of the entrance port; the angle of the entrance port of the jet device is 120 degrees; the angle of the diffusion opening is 5 degrees; the angle of the spout is 25 °.
9. The integrated apparatus for ozone catalytic oxidation reaction according to claim 1, wherein a recovery mechanism of the powder catalyst is disposed at the outlet of the ozone reaction tower.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022526425.XU CN214400042U (en) | 2020-11-04 | 2020-11-04 | High-efficient ozone catalytic oxidation reaction integrated device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022526425.XU CN214400042U (en) | 2020-11-04 | 2020-11-04 | High-efficient ozone catalytic oxidation reaction integrated device |
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| CN214400042U true CN214400042U (en) | 2021-10-15 |
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