CN211004662U - Device for catalyzing organic matters in ozone oxidation wastewater by ultraviolet light - Google Patents
Device for catalyzing organic matters in ozone oxidation wastewater by ultraviolet light Download PDFInfo
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- CN211004662U CN211004662U CN201920831287.0U CN201920831287U CN211004662U CN 211004662 U CN211004662 U CN 211004662U CN 201920831287 U CN201920831287 U CN 201920831287U CN 211004662 U CN211004662 U CN 211004662U
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Abstract
The utility model discloses a device for oxidizing organic matters in wastewater by ultraviolet light catalysis and ozone, which belongs to the field of wastewater treatment and comprises a gas-liquid mixing module and an ultraviolet catalytic oxidation module; the gas-liquid mixing module comprises a liquid inlet pump, a Venturi ejector and an ozone machine, wherein the outlet of the liquid inlet pump is communicated with the first inlet of the Venturi ejector, and the second inlet of the Venturi ejector is communicated with the outlet of the ozone machine; the ultraviolet catalytic oxidation module comprises a reaction tank, an atomizing nozzle and an ultraviolet lamp assembly, wherein the atomizing nozzle and the ultraviolet lamp assembly are arranged in the reaction tank. The device provided by the utility model improve the area of contact of organic matter in ozone and the waste water, promoted the oxidizing power that ultraviolet catalysis ozone produced the hydroxyl free radical to organic matter obtains maximum oxidative degradation in making waste water, has improved waste water treatment's efficiency and the cost is reduced.
Description
Technical Field
The utility model relates to a waste water treatment field especially relates to a device of organic matter in ultraviolet photocatalysis ozone oxidation waste water.
Background
With the rapid development of modern industry, various refractory organic waste water is increasing, and the waste water generally has the characteristics of high pollutant concentration, high toxicity and poor biodegradability, seriously pollutes the water environment and harms human health. After traditional physicochemical and biochemical treatment, the wastewater still contains a large amount of toxic and biologically non-degradable organic pollutants, which can not meet the discharge standard and can reach the discharge standard by further advanced treatment. Therefore, the development of the industrial wastewater deep wastewater treatment technology has great significance for water saving and emission reduction and environmental protection.
Aiming at the organic wastewater difficult to degrade, the existing treatment technologies at home and abroad comprise biodegradation, coagulation, adsorption, membrane separation, advanced oxidation technology and the like. The biological method has the advantages of low treatment speed, large treatment space, high requirement on water inlet, unstable water outlet and low removal efficiency of some organic matters difficult to degrade. The coagulation method has low removal efficiency on hydrophilic pollutants and small molecular organic matters. The adsorption method has certain selectivity to pollutants, and needs adsorbent regeneration, so that the problem of secondary pollution exists. The membrane technology can effectively remove most pollutants in water, but the application of the technology in wastewater treatment is restricted by the problems of concentrated water treatment and membrane pollution. Advanced oxidation technology utilizes the produced hydroxyl radical with strong oxidation capacity to oxidize pollutants in water, so that the pollutants are subjected to a series of intermediate processes to finally generate carbon dioxide and other inorganic ions. The advanced oxidation technology comprises ozone catalytic oxidation, photocatalytic oxidation, Fenton oxidation, electrochemical oxidation, ultrasonic cavitation, supercritical oxidation and the like.
The ultraviolet light catalytic ozonation technology is an advanced oxidation technology which is mild in reaction condition, high in removal efficiency and free of secondary pollution, and is gradually a research hotspot. The ultraviolet light catalyzed ozone oxidation technology utilizes the catalytic action of ultraviolet light and ozone to enable ozone to be rapidly and efficiently converted into hydroxyl radicals with stronger oxidation capacity, and the technology is already used in many waste gas treatments, such as Chinese patents 201510191175.X, 201510191674.9, 201610044700.X, 201720466335.1, 201721338682.2 and 201821224418.0, but the ultraviolet light catalyzed ozone oxidation technology is rare in waste water treatment because ozone needs to be dissolved into water firstly and then generates hydroxyl radicals under the irradiation of ultraviolet light to react with organic matters in the water, and if the design is poor, the effect is not obvious. Although the chinese patent 201520434096.2 provides an ozone-ultraviolet light-hydrogen peroxide composite reaction device, the mixing of ozone and water is performed in an aeration manner, the effect is not good, the uniform irradiation of ultraviolet light is not considered well, the wavelength of an ultraviolet lamp is not considered much, and only the wavelength of a vacuum ultraviolet lamp can convert the oxygen in the air back into ozone and hydroxyl radicals.
Therefore, those skilled in the art are devoted to develop a device for oxidizing organic matters in wastewater by using ultraviolet light catalytic ozone, so that the contact area between ozone and the organic matters in wastewater is increased, and the oxidizing capability of the ultraviolet light catalytic ozone for generating hydroxyl radicals is improved, so that the organic matters in the wastewater are oxidized and degraded to the maximum extent, the efficiency is improved, and the energy consumption is reduced.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem how to improve the area of contact of organic matter in ozone and the waste water, promote the oxidizing power that ultraviolet catalysis ozone produced the hydroxyl free radical to organic matter obtains maximum oxidative degradation in making waste water, thereby promotes speed and the efficiency of organic matter degradation in the waste water.
In order to achieve the aim, the utility model provides a device for oxidizing organic matters in wastewater by ultraviolet light catalysis and ozone, which is characterized by comprising a gas-liquid mixing module and an ultraviolet catalysis and oxidation module; the gas-liquid mixing module comprises a liquid inlet pump, a Venturi ejector and an ozone machine, wherein the outlet of the liquid inlet pump is communicated with the first inlet of the Venturi ejector, and the second inlet of the Venturi ejector is communicated with the outlet of the ozone machine; the ultraviolet catalytic oxidation module comprises a reaction tank, an atomizing nozzle and an ultraviolet lamp assembly, wherein the atomizing nozzle and the ultraviolet lamp assembly are arranged in the reaction tank.
Further, the inlet of the liquid inlet pump is communicated with the outlet of the reaction tank, and the outlet of the venturi ejector is communicated with the atomizing nozzle to form a circulating system.
Further, the device still includes the rotameter, the rotameter sets up atomizing nozzle with between the venturi ejector.
Optionally, the apparatus further comprises a rotameter disposed between the reaction tank and the liquid inlet pump.
Further, the atomizing nozzle is vertically arranged at the top of the reaction tank, and the installation position of the atomizing nozzle is higher than the liquid level of liquid in the reaction tank.
Further, the ultraviolet lamp assembly is arranged in parallel with the atomizing nozzle, and the installation position of the ultraviolet lamp assembly is higher than the liquid level of the liquid in the reaction tank.
Further, the ultraviolet lamp assembly comprises an ultraviolet lamp and an ultraviolet light reflecting cover, the ultraviolet light reflecting cover covers the ultraviolet lamp, and the ultraviolet lamp reflecting cover is fixedly connected or detachably connected with the ultraviolet lamp.
Further, the ultraviolet wavelength of the ultraviolet lamp component is set to be 100-200 nm.
Further, the feed liquor pump includes inlet valve and outlet valve, inlet valve sets up the feed liquor pump with between the retort, outlet valve sets up the feed liquor pump with between the venturi ejector.
Further, the inner wall material of the reaction tank is a material capable of reflecting ultraviolet light.
Compared with the prior art, the utility model discloses following beneficial technological effect has:
1. through the venturi ejector, carry out abundant gas-liquid mixture with waste water and ozone to make the ozone concentration in aquatic rise by a wide margin.
2. The gas-liquid mixture passes through the atomizing nozzle to form fog-shaped water drops, so that the specific surface area of the contact of ozone and water is increased, and the contact proportion of the ozone and organic matters is improved; and the reaction area of ozone and ultraviolet light is increased, and the yield of hydroxyl radicals is greatly improved.
3. Ozone in the mist water drops contacts with strong ultraviolet rays emitted by a high-strength vacuum section ultraviolet lamp with an ultraviolet reflector, a large number of hydroxyl free radicals can be rapidly generated through catalysis, and organic matters are rapidly oxidized into carbon dioxide and inorganic ions under the strong oxidizing property of the hydroxyl free radicals, so that the organic matters are more efficiently oxidized and degraded.
4. Oxygen generated after ozone oxidation and decomposition is irradiated by a high-strength vacuum section ultraviolet lamp and can be converted into ozone and hydroxyl radicals again, so that the utilization rate of ozone is improved.
5. The utility model discloses but the device multiple cycle is less than emission standard until organic matter in the waste water, and the running cost is low and efficient.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 is a schematic view of an apparatus and a process flow for ultraviolet photocatalytic ozonation of organic matter in wastewater according to a preferred embodiment of the present invention.
Wherein: 1-liquid inlet pump, 2-Venturi ejector, 3-rotor flow meter, 4-ozone machine, 5-reaction tank, 6-atomizing nozzle, 7-ultraviolet lamp assembly, 8-inlet valve and 9-outlet valve.
Detailed Description
The technical contents of the preferred embodiments of the present invention will be more clearly understood and appreciated by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments, and the scope of the invention is not limited to the embodiments described herein.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
Example 1
As shown in figure 1, the device for catalyzing the ozone to oxidize organic matters in the wastewater by using the ultraviolet light comprises a liquid inlet pump 1, a Venturi ejector 2, a rotor flow meter 3, an ozone machine 4, a reaction tank 5, an atomizing nozzle 6 and an ultraviolet lamp assembly 7. The inlet of the liquid inlet pump 1 is communicated with the outlet of the reaction tank 5, the outlet of the liquid inlet pump 1 is communicated with the first inlet of the venturi ejector 2, the second inlet of the venturi ejector 2 is communicated with the outlet of the ozone machine 4, the outlet of the venturi ejector 2 is communicated with the rotor flow meter 3, the rotor flow meter 3 is communicated with the atomizing nozzle 6, and the atomizing nozzle 6 and the ultraviolet lamp assembly 7 are both arranged in the reaction tank 5.
The liquid inlet pump 1 comprises an inlet valve 8 and an outlet valve 9, the inlet valve 8 is arranged between the liquid inlet pump 1 and the reaction tank 5, and the outlet valve 9 is arranged between the liquid inlet pump 1 and the venturi ejector 2.
The ozone generator 4 can set the rate of ozone generation to saturate the solubility of ozone in the wastewater.
The atomizing nozzle 6 is vertically arranged at the top of the reaction tank 5, the installation position of the atomizing nozzle is higher than the liquid level of liquid in the reaction tank 5, and the atomizing nozzle 6 is configured to atomize a gas-liquid mixture to form fog-shaped water drops, so that the specific surface area of contact between ozone and water is increased, and the contact proportion of the ozone and organic matters is improved.
The ultraviolet lamp assembly 7 is arranged in parallel with the atomizing nozzle 6, and the installation position of the ultraviolet lamp 7 is higher than the liquid level of the liquid in the reaction tank 5.
The ultraviolet lamp component 7 comprises an ultraviolet lamp and an ultraviolet light reflector, the ultraviolet light reflector covers the ultraviolet lamp, and the ultraviolet lamp reflector is fixedly connected with the ultraviolet lamp or detachably connected with the ultraviolet lamp.
The inner wall material of the reaction tank 5 is a material for reflecting ultraviolet light.
The process flow of the device comprises the following steps:
Example 2
Comparative experiment with and without UV reflector in UV catalytic reaction zone:
placing an ultraviolet lamp tube with the diameter of 3cm and the length of 20cm in the center of an ultraviolet catalytic reaction cylinder with the diameter of 20cm and the length of 50cm, and setting the ultraviolet wavelength of the ultraviolet lamp tube between 100 nm and 200 nm; an intensity meter with ultraviolet ray having a wavelength of 254nm is placed between an ultraviolet lamp tube and a reaction cylinder, and the distribution of ultraviolet ray intensity with an ultraviolet light reflector and without a reflector is compared (0 degree represents that the intensity meter with ultraviolet ray having a wavelength of 254nm is directly opposite to the ultraviolet lamp, measurement is performed every 90 degrees, and the ultraviolet light intensity meter is back to the lamp tube at 180 degrees), and the data is shown in table 1:
TABLE 1 UV intensity with and without UV reflector
| Ultraviolet intensity (uW/cm2) | 0 degree | 90 degree | 180 degrees | 270 degree |
| Ultraviolet-free reflector | 4972 | 7.3 | 11 | 5.8 |
| With ultraviolet reflector | 6962 | 861 | 316 | 935 |
As can be seen from table 1, the distribution of uv light is more uniform and the intensity is increased in the case of the uv reflector, and the efficiency of uv catalyzing ozone is greatly improved in the case of the uv reflector.
Example 3
By using the ozone oxidation apparatus of example 1 to test a 0.015% methylene blue solution, the removal rate of organic materials under ozone, ozone + ultraviolet reflectors was compared under the same conditions, and the data are shown in table 2:
table 2: in different reaction time, the removal rate of methylene blue is respectively under the conditions of ozone, ozone + ultraviolet and ultraviolet reflecting cover
Can know by table 2, under the condition of ozone + ultraviolet lamp + ultraviolet bowl, the blue clearance of methylene is the highest, and is visible the utility model discloses can effectively improve ultraviolet photocatalysis ozone oxidation's efficiency, make reaction time reduce by a wide margin, promote efficiency, the cost is reduced.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the teachings of this invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (4)
1. The device for catalyzing the organic matters in the ozone oxidation wastewater by the ultraviolet light is characterized by comprising a gas-liquid mixing module and an ultraviolet catalytic oxidation module, wherein the gas-liquid mixing module and the ultraviolet catalytic oxidation module are connected through a liquid conveying pipeline to form a circulating system,
the gas-liquid mixing module comprises a liquid inlet pump, a Venturi ejector, a rotor flow meter and an ozone machine, wherein the outlet of the liquid inlet pump is communicated with the first inlet of the Venturi ejector, the second inlet of the Venturi ejector is communicated with the outlet of the ozone machine, the rotor flow meter is arranged between an atomizing nozzle and the Venturi ejector,
the ultraviolet catalytic oxidation module comprises a reaction tank, an atomizing nozzle and an ultraviolet lamp assembly, wherein the atomizing nozzle and the ultraviolet lamp assembly are arranged in parallel in the reaction tank, and the installing position of the atomizing nozzle and the ultraviolet lamp assembly is higher than the liquid level of liquid in the reaction tank.
2. The apparatus of claim 1, wherein the atomizing nozzle is vertically installed at the top of the reaction tank.
3. The apparatus of claim 1, wherein the ultraviolet lamp assembly comprises an ultraviolet lamp and an ultraviolet reflector, the ultraviolet reflector overlying the ultraviolet lamp, the ultraviolet reflector being fixedly or removably coupled to the ultraviolet lamp.
4. The apparatus of claim 1, wherein the liquid inlet pump comprises an inlet valve disposed between the liquid inlet pump and the reaction tank and an outlet valve disposed between the liquid inlet pump and the venturi ejector.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111807501A (en) * | 2020-07-20 | 2020-10-23 | 扬州大学 | Continuous high-concentration ozone oxidation sewage treatment device and sewage treatment method thereof |
| CN113552309A (en) * | 2021-08-13 | 2021-10-26 | 长江水利委员会长江科学院 | Photoreaction simulation device and photoreaction simulation method for degrading pollutants in flood discharge atomized water body |
| CN113800680A (en) * | 2021-09-30 | 2021-12-17 | 维尔利环保科技集团股份有限公司 | Reactor and method for treating landfill leachate membrane concentrated solution based on reactor |
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2019
- 2019-06-03 CN CN201920831287.0U patent/CN211004662U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111807501A (en) * | 2020-07-20 | 2020-10-23 | 扬州大学 | Continuous high-concentration ozone oxidation sewage treatment device and sewage treatment method thereof |
| CN113552309A (en) * | 2021-08-13 | 2021-10-26 | 长江水利委员会长江科学院 | Photoreaction simulation device and photoreaction simulation method for degrading pollutants in flood discharge atomized water body |
| CN113800680A (en) * | 2021-09-30 | 2021-12-17 | 维尔利环保科技集团股份有限公司 | Reactor and method for treating landfill leachate membrane concentrated solution based on reactor |
| CN113800680B (en) * | 2021-09-30 | 2023-08-25 | 维尔利环保科技集团股份有限公司 | Reactor and method for treating landfill leachate membrane concentrate based on same |
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