CN217921604U - Advanced oxidation device for combined application of ozone and hydrogen peroxide - Google Patents
Advanced oxidation device for combined application of ozone and hydrogen peroxide Download PDFInfo
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- CN217921604U CN217921604U CN202221959169.6U CN202221959169U CN217921604U CN 217921604 U CN217921604 U CN 217921604U CN 202221959169 U CN202221959169 U CN 202221959169U CN 217921604 U CN217921604 U CN 217921604U
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Abstract
The utility model relates to an advanced oxidation unit that ozone and hydrogen peroxide jointly used, the device is the technology that utilizes ozone to unite hydrogen peroxide, the device is including storing up the explosive barrel, adding the medicine pump, reaction sedimentation tank, ozone generator, ozone reaction tank, feed liquor pipe, reaction sedimentation tank etc. wherein store up the hydrogen peroxide liquid medicine in the explosive barrel and get into reaction sedimentation tank and waste liquid reaction through adding the medicine pump, the ozone that gets into in ozone reaction tank, the ozone generator after the reaction also together gets into the ozone reaction tank and reacts, discharge after up to standard can. Its advantages are: adopt the utility model discloses a two sections reaction pattern compare traditional method (fenton technology, ozone oxidation technology etc.), have reduced dosage and the useless volume of danger when improving the COD clearance.
Description
Technical Field
The utility model relates to the technical field of COD (chemical oxygen demand) removal of refractory wastewater, in particular to an advanced oxidation device with combined application of ozone and hydrogen peroxide.
Background
The advanced oxidation technology is also called as deep oxidation technology, is characterized by generating hydroxyl free radical (OH) with strong oxidation capacity, and under the reaction conditions of high temperature and high pressure, electricity, sound, light irradiation, catalyst and the like, macromolecular refractory organic matters are oxidized into low-toxicity or non-toxic micromolecular substances. Depending on the manner of generating radicals and the reaction conditions, they can be classified into photochemical oxidation, catalytic wet oxidation, sonochemical oxidation, ozone oxidation, electrochemical oxidation, fenton oxidation, and the like.
The ozone oxidation method is mainly realized through two ways of direct reaction and indirect reaction. The direct reaction means that ozone and organic matters directly react, the mode has stronger selectivity, generally attacks the organic matters with double bonds, and is generally more effective on unsaturated aliphatic hydrocarbon and aromatic hydrocarbon compounds; the indirect reaction is a reaction in which OH generated by ozonolysis reacts with organic substances by oxidation reaction, and this method is not selective.
Although the ozone oxidation method has strong capabilities of decoloring and removing organic pollutants, the method has high operation cost and selectivity on the oxidation of organic matters, the pollutants cannot be completely mineralized in low dosage and short time, and the intermediate products generated by decomposition can prevent the oxidation process of ozone. It can be seen that the ozone oxidation method for treating landfill leachate still has great limitations.
The Fenton process is a deep oxidation technique, i.e. using Fe and H 2 O 2 The chain reaction between the two components catalyzes to generate OH free radicals which have strong oxidizing property and can oxidize various toxic and nondegradable organic compounds so as to achieve the purpose of removing pollutants. Is particularly suitable for the oxidation treatment of organic wastewater such as landfill leachate which is difficult to be biologically degraded or generally ineffective in chemical oxidation. The Fenton method for treating high-concentration wastewater mainly has pH and H as influencing factors 2 O 2 The amount of the iron salt and the amount of the iron salt.
Therefore, the traditional ozone and Fenton process has the following characteristics: (1) the COD removal rate of the ozone oxidation process is unstable and cannot meet the requirements. (2) The fenton process can be in danger of being wasted in a large amount. (3) The fenton process is complex in structure.
The Chinese patent application: 201911050528.9 discloses a cellulose ethanol wastewater treatment process and a system, which comprises a first regulating tank, an advanced oxidation tank (1), a second regulating tank, an ozone floatation tank (2), an anaerobic tank (3), an aerobic tank (4) and a sedimentation tank which are sequentially communicated, can effectively treat cellulose ethanol wastewater with high organic concentration and low B/C, and has the advantages of good treatment effect, stable system operation and the like. However, the system also comprises a liquid medicine adding meter for ferrite, namely the ferrite is required to be used (the wastewater enters the advanced oxidation pond through the first regulating pond water outlet pipe and the advanced oxidation pond water inlet pipe, is mixed with the hydrogen peroxide and the ferrite from the liquid medicine adding meter, and is stirred by the high-pressure oxidation pond stirrer).
The Chinese patent application: 202121355491.3 discloses an ozone-hydrogen peroxide-ultraviolet combined advanced oxidation treatment device, which comprises: the top of the primary oxidation tank is provided with a spraying device which is connected with the hydrogen peroxide storage tank; the primary oxidation tank is connected with the ozone generator and the sewage pipe; the secondary oxidation pond is connected with the primary oxidation pond, the secondary oxidation pond is connected with the ozone generator, and the secondary oxidation pond is connected with the water outlet pipe; the primary oxidation pond and the secondary oxidation pond are both provided with an ultraviolet lamp and a plurality of circulating pipes. The utility model provides a high-grade oxidation effluent treatment plant has the problem that oxidation treatment efficiency is low among the prior art. The advanced oxidation treatment device can generate a large amount of hydroxyl radicals by combining ozone, hydrogen peroxide and ultraviolet rays, thereby efficiently oxidizing organic matters and the like in sewage, reducing the COD value in the sewage and enabling the water body to reach the discharge standard. However, the patent needs to use ultraviolet rays (i.e. structures such as an additional ultraviolet lamp and a plurality of circulating pipes are needed), and compared with the patent, the structure is more complex and the cost is increased.
This patent is adjusted to conventional advanced oxidation treatment process, has provided a neotype processing apparatus, compares traditional method (fenton technology, ozone oxidation technology), and the dose of improvement method is more economized, and the amount of danger is useless still less, and the clearance is higher. Especially, in the treatment of the tail end of large-water-volume wastewater, the reduction amount of dangerous waste is obvious. The advanced oxidation device using the ozone and the hydrogen peroxide in combination has no relevant report at present.
Disclosure of Invention
The utility model aims to adjust the conventional advanced oxidation treatment process and provide an advanced oxidation device with ozone and hydrogen peroxide combined application.
In order to achieve the purpose, the utility model adopts the technical proposal that:
the utility model provides an ozone and hydrogen peroxide combined application's senior oxidation unit, the device is two segmentation structures, and wherein first segmentation includes storage medicine bucket 1, mixer 4, dosing pump 8, feed liquor pipe 9, reaction sedimentation tank 10, and the second segmentation includes elevator pump 5, ozone generator 6, ozone reaction tank 7, storage medicine bucket 1 is connected with reaction sedimentation tank 10 upper end mouth through dosing pump 8, feed liquor pipe 9 is connected with reaction sedimentation tank 10 lower end mouth, mixer 4 is located reaction sedimentation tank 10 top, reaction sedimentation tank 10 is connected with ozone reaction tank 7 through elevator pump 5, ozone generator 6 is connected with ozone reaction tank 7.
Further, the first section type also comprises a pressure gauge 2 and a flow meter 3, and the pressure gauge 2 and the flow meter 3 are connected with a dosing pump 8.
Further, a switch valve is arranged on the liquid inlet pipe 9.
Further, the ozone reaction tank 7 is also provided with a discharge port.
Preferably, the first section and the second section are reinforced concrete structures, and the inner sides of the first section and the second section are covered with the protective glass fiber reinforced plastics.
Further, the device also comprises guide cylinders which are respectively positioned between the dosing pump 8 and the reaction sedimentation tank 10, between the lifting pump 5 and the ozone reaction tank 7 and between the reaction sedimentation tank 10 and the lifting pump 5.
Further, the second section type also comprises an ozone concentration meter and an air release valve, wherein the ozone concentration meter and the air release valve are positioned at the bottom of the ozone reaction tank 7.
Further, the ozone reaction tank 7 is also provided with a switch valve.
The action principle is as follows:
hydrogen peroxide single-action half-reaction formula:
ozone single-action half-reaction formula:
H 2 O 2 and O 3 The reaction can be considered as O 3 Molecule with OH － Reaction to HO 2 － And H 2 O 2 The partial dissociation causes the following reaction:
HO formed by the above reaction 2 － Is an inducer for the generation of free radicals OH.
Once the free radical OH is generated, the following chain reaction occurs:
the utility model has the advantages that:
1. the advanced oxidation process combining ozone and hydrogen peroxide is set into a two-stage mode, comprises a first-stage hydrogen peroxide adding reaction tank which is of a reinforced concrete structure, protective glass fiber reinforced plastics are covered and arranged on the inner side of the reaction tank, a stirrer blade and a connecting shaft are made of stainless steel, and the outer surface of the reaction tank is lined with plastics; after water enters the system, automatic hydrogen peroxide addition is realized through a dosing pump, a stirrer in the tank can enable the reagent and pollutants to fully react, the reacted wastewater flows into a secondary ozone reaction tank which is of a steel concrete structure, protective glass fiber reinforced plastics are covered and arranged on the inner sides of the wastewater, a guide cylinder is arranged in the center of the wastewater, an ozone generator is arranged at the lower part of the tank, the reaction time is not shorter than 4 hours, an ozone concentration meter is arranged at the outlet in the tank, the saturated ozone amount can be observed, and an emptying valve is arranged at the bottom of the tank and used for maintenance.
The traditional advanced oxidation process has defects, such as Fenton process, and has a four-stage chemical dosing + precipitation reaction structure, namely: adding a first-stage acid adjusting agent, a second-stage ferrous sulfate agent, a third-stage hydrogen peroxide agent, a fourth-stage alkali adjusting agent and a flocculating agent, and feeding water into a sedimentation tank; the structure occupies a large area, the dosage is large, and the hazardous waste is also large; and a single ozone oxidation process is adopted, so that the hazardous waste amount is not different from that of an improved process, but the treatment effect is not as good as that of the device.
2. Compared with a single ozone process, the utility model has higher COD removal rate; compared with the Fenton process, the method has the advantages of less dosage and less hazardous waste.
Drawings
Fig. 1 is a schematic view of the connection structure of the whole device of the present invention.
1. A medicine storage barrel;
2. a pressure gauge;
3. a flow meter;
4. a blender;
5. a lift pump;
6. an ozone generator;
7. an ozone reaction tank;
8. a dosing pump;
9. a liquid inlet pipe;
10. and (4) a reaction sedimentation tank.
Detailed Description
The present invention will be further described with reference to the following detailed description. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications can be made by those skilled in the art after reading the disclosure of the present invention, and such equivalents also fall within the scope of the appended claims.
Example 1
Referring to fig. 1, fig. 1 is a schematic view of the connection structure of the overall device of the present invention.
This embodiment provides an advanced oxidation unit that ozone and hydrogen peroxide jointly used, the device is two segmentation structures, and wherein first segmentation includes storage medicine bucket 1, manometer 2, flowmeter 3, mixer 4, dosing pump 8, feed liquor pipe 9, reaction sedimentation tank 10, and the second segmentation includes elevator pump 5, ozone generator 6, ozone reaction tank 7, ozone concentration meter and atmospheric valve, storage medicine bucket 1 is connected with reaction sedimentation tank 10 upper end through dosing pump 8, manometer 2 and flowmeter 3 are connected with dosing pump 8, feed liquor pipe 9 is connected with reaction sedimentation tank 10 lower end mouth, still be equipped with the ooff valve on the feed liquor pipe 9, mixer 4 is located reaction sedimentation tank 10 top, reaction sedimentation tank 10 is connected with ozone reaction tank 7 through elevator pump 5, ozone generator 6 is connected with ozone reaction tank 7, still be equipped with discharge port and ooff valve on the ozone reaction tank 7, concentration meter and atmospheric valve are located reaction tank 7 bottoms. The first section type and the second section type are of reinforced concrete structures, and the inner sides of the first section type and the second section type are covered with protective glass fiber reinforced plastics. The device also comprises a guide cylinder, wherein the guide cylinder is respectively positioned between the dosing pump 8 and the reaction sedimentation tank 10, between the lifting pump 5 and the ozone reaction tank 7 and between the reaction sedimentation tank 10 and the lifting pump 5.
The using method or the working principle of the embodiment is as follows:
the first stage is as follows: store up and be used for holding the hydrogen peroxide liquid medicine in the explosive barrel 1, impress the hydrogen peroxide liquid medicine in the explosive barrel 1 reaction sedimentation tank 10 through dosing pump 8 to can observe manometer 2 and flowmeter 3 and control the inflow speed and the pressure of hydrogen peroxide liquid medicine. The waste liquid enters the reaction sedimentation tank 10 through the liquid inlet pipe 9, the hydrogen peroxide liquid medicine oxidizes the waste liquid, and the stirring machine 4 can uniformly stir the hydrogen peroxide liquid medicine and the waste liquid.
And a second stage: after the reaction is finished, liquid in the reaction sedimentation tank 10 enters the ozone reaction tank 7 through the lifting pump 5, the ozone generator 6 is used for generating ozone and transmitting the ozone to the ozone reaction tank 7 for treating the liquid, wherein an ozone concentration meter at the bottom of the ozone reaction tank 7 can be used for measuring the concentration of the ozone in real time, and when maintenance is needed, an emptying valve can be used for releasing the ozone to finish maintenance. When the treatment in the ozone reaction tank 7 is finished and reaches the discharge standard, the ozone is discharged through the discharge port. The guide cylinder can play a role in guiding flow, reduce the vibration of high-speed fluid to the pipe and play a role in prolonging the service life of the pipe. Wherein each switch valve can be used for controlling the circulation or the blockage of liquid or gas in real time.
The principle of the treatment process of the utility model is as follows:
hydrogen peroxide single-action half-reaction formula:
ozone single-action half-reaction formula:
H 2 O 2 and O 3 The reaction can be considered as O 3 Molecule with OH － Reaction to form HO 2 － And H 2 O 2 The partial dissociation causes the following reaction:
HO formed by the above reaction 2 － Is an inducer of free radical OH production.
Once the free radical OH is generated, the following chain reaction occurs:
example 2
The wastewater was treated according to the ozone oxidation method, the Fenton method and the apparatus described in example 1 (secondary biochemical treatment), respectively, and the results were as follows:
TABLE 1 data sheet of ozone reaction effect alone
Table 2 fenton process reaction effect data table
TABLE 3 reaction effect data table for ozone plus hydrogen peroxide process
According to the 3 groups of data, the process (namely the device of the utility model) of combining ozone and hydrogen peroxide is adopted, compared with the traditional Fenton process, the COD removal rate is basically equal, but the hazardous waste of each ton of waste water is reduced by 5.55 kg (sludge with the water content of 85%); compared with a pure ozone process, no hazardous waste is generated, but the COD removal rate can be improved by 18.8 percent with the same retention time. The improved apparatus is therefore superior to conventional advanced oxidation processes (apparatus).
Example 3
In a certain brewing factory, after the production wastewater is subjected to secondary biochemical treatment, COD in the wastewater is = 200-250 mg/L, the water quantity is less than or equal to 1800 tons/day, and after ozone and hydrogen peroxide are used for addition reaction, the COD in the effluent is less than or equal to 60mg/L, so that the emission standard is met.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and additions can be made without departing from the principles of the present invention, and these improvements and additions should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides an ozone and hydrogen peroxide combined application's advanced oxidation unit, a serial communication port, the device is two segmentation structures, and wherein first segmentation includes medicine storage barrel (1), mixer (4), dosing pump (8), feed liquor pipe (9), reaction sedimentation tank (10), and the second segmentation includes elevator pump (5), ozone generator (6), ozone reaction tank (7), medicine storage barrel (1) is connected with reaction sedimentation tank (10) up end through dosing pump (8), feed liquor pipe (9) are connected with reaction sedimentation tank (10) end opening down, mixer (4) are located reaction sedimentation tank (10) top, reaction sedimentation tank (10) are connected with ozone reaction tank (7) through elevator pump (5), ozone generator (6) are connected with ozone reaction tank (7).
2. The device according to claim 1, characterized in that the first section further comprises a pressure gauge (2) and a flow meter (3), and the pressure gauge (2) and the flow meter (3) are connected with a dosing pump (8).
3. The device according to claim 1, characterized in that the liquid inlet pipe (9) is also provided with a switch valve.
4. The device according to claim 1, characterized in that the ozone reaction tank (7) is also provided with a discharge port.
5. The apparatus of claim 1, wherein the first and second sections are reinforced concrete structures covered with protective glass reinforced plastic.
6. The device according to claim 1, characterized in that it further comprises guide cylinders respectively located between the dosing pump (8) and the reactive precipitation tank (10), between the lift pump (5) and the ozone reaction tank (7), and between the reactive precipitation tank (10) and the lift pump (5).
7. The apparatus of claim 1, wherein the second section further comprises an ozone concentration meter and a vent valve, and the ozone concentration meter and the vent valve are positioned at the bottom of the ozone reaction tank (7).
8. The device according to claim 1, characterized in that the ozone reaction tank (7) is further provided with an on-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202221959169.6U CN217921604U (en) | 2022-07-27 | 2022-07-27 | Advanced oxidation device for combined application of ozone and hydrogen peroxide |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221959169.6U CN217921604U (en) | 2022-07-27 | 2022-07-27 | Advanced oxidation device for combined application of ozone and hydrogen peroxide |
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| CN217921604U true CN217921604U (en) | 2022-11-29 |
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| CN202221959169.6U Active CN217921604U (en) | 2022-07-27 | 2022-07-27 | Advanced oxidation device for combined application of ozone and hydrogen peroxide |
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