Catalytic reaction kettle and fluorescent penetrating fluid wastewater pretreatment system
By designing a catalytic reactor with replaceable catalysts and a multi-reactor pretreatment system, the problem of reduced efficiency of Fenton-like heterogeneous catalysts was solved, achieving efficient pretreatment of fluorescent permeate wastewater and improving economic benefits.
Patent Information
- Application Number
- CN202423275526.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2034-12-30
AI Technical Summary
In the existing technology, Fenton-like heterogeneous catalysts experience reduced efficiency during use and cannot be replaced in a timely manner, and there is a lack of complete sets of equipment for treating fluorescent permeate wastewater.
A catalytic reactor was designed, comprising a columnar catalyst tank made of metal mesh, which allows for direct catalyst replacement during the reaction. Combined with a pretreatment system consisting of multiple reactors, it utilizes a Fenton-like heterogeneous catalyst for the pretreatment of fluorescent permeate wastewater.
This approach enables efficient replacement and reuse of the catalyst, improves the COD removal rate of fluorescent permeate wastewater, reduces flocculant generation, and enhances economic benefits and environmental protection.
Smart Images
Figure CN223906672U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of reaction kettle and wastewater treatment system, belong to chemical treatment equipment technical field. BACKGROUND
[0002] Organic solvent and dye component in fluorescent penetrant solution can produce a large amount of high-concentration wastewater in the detection and cleaning process, which seriously threatens the health of water bodies. Currently, Fenton oxidation method is a commonly used treatment method for advanced oxidation treatment of fluorescent penetrant solution wastewater. Fenton method also has some problems to be solved, such as non-centralized catalyst preparation, unstable reaction effect, and high reaction temperature. In the treatment of acidic high-concentration organic wastewater, the use of Al2O3 as a carrier and transition metal as a catalyst has good catalytic effect. This method has the advantages of higher removal rate, less sludge and no flocculation. The efficiency of the Fenton-like heterogeneous catalyst will decrease during use, so the catalyst needs to be replaced in time. However, the existing treatment equipment cannot directly replace the catalyst, and there is no complete equipment for treating fluorescent penetrant solution wastewater using Fenton-like heterogeneous catalyst in the prior art. SUMMARY
[0003] In view of the defects of the prior art, the utility model provides a catalytic reaction kettle and a fluorescent penetrant solution wastewater pretreatment system, which aims to facilitate the replacement of Fenton-like heterogeneous catalyst and achieve the pretreatment of fluorescent penetrant solution wastewater.
[0004] The utility model technical scheme is as follows:
[0005] A catalytic reaction kettle comprises a reaction kettle body and a catalyst tank, the top of the reaction kettle body is provided with a catalyst tank connecting port, the catalyst tank comprises a storage section and a connecting section, the storage section is a columnar structure made of metal mesh, the storage section is provided with an openable and closable top cover, the connecting section is fixedly connected with the storage section, the top of the connecting section is provided with an interface part matched with the catalyst tank connecting port, and the interface part is connected with the catalyst tank connecting port to make the storage section extend into the reaction kettle body.
[0006] Further, a stirring blade is arranged in the middle of the reaction kettle body, and a driving mechanism for driving the stirring blade is arranged at the top of the reaction kettle body.
[0007] Further, a limiting seat is arranged in the reaction kettle body, and the bottom of the storage section of the catalyst tank is supported by the limiting seat.
[0008] Further, a plurality of limiting rings are arranged in the reaction kettle body, and the catalyst tank is arranged in the limiting rings.
[0009] Further, the outside of the reaction kettle body is provided with a heating jacket.
[0010] Further, the mesh number of the metal mesh is not greater than 50 meshes.
[0011] Another technical scheme of the utility model discloses a kind of fluorescent permeate wastewater pretreatment systems.
[0012] A fluorescent permeate wastewater pretreatment system includes a wastewater tank, a first catalytic reactor, an acid tank, a neutralization reactor, a lye tank, a sedimentation tank, and a filter press device. The wastewater tank is connected to the first catalytic reactor via a wastewater pipeline. The acid tank is connected to the first catalytic reactor via an acid addition pipeline. The outlet of the first catalytic reactor is connected to the neutralization reactor. The lye tank is connected to the neutralization reactor via a lye addition pipeline. The outlet of the neutralization reactor is connected to the sedimentation tank. The inlet of the filter press device is connected to the sedimentation tank. The first catalytic reactor is a catalytic reactor of the utility model.
[0013] Further, the system includes a second catalytic reactor. The outlet of the first catalytic reactor is connected to the second catalytic reactor. The outlet of the second catalytic reactor is connected to the neutralization reactor. The acid tank is connected to the first catalytic reactor and the second catalytic reactor via an acid addition pipeline. The second catalytic reactor is a catalytic reactor of the utility model.
[0014] Compared with the prior art, the technical scheme provided by the utility model has the following advantages:
[0015] The catalytic reactor of the utility model is provided with a cylindrical catalyst storage section made of a metal mesh. After the catalyst tank is connected to the top of the reactor body via a connecting section, it extends into the reactor body to allow the catalyst to participate in the reaction. When the catalyst needs to be replaced, the catalyst tank can be directly pulled out for replacement, which can be performed during the reaction process and is convenient to operate. The fluorescent permeate wastewater pretreatment system formed by the catalytic reactor can use a Fenton-like heterogeneous catalyst to perform non-iron series wet oxidation method pretreatment on fluorescent permeate wastewater, promote its rapid degradation, further improve the COD removal rate, reduce the production of flocculants in the treated water body, further solve the problem of recycling of high-concentration fluorescent permeate wastewater, improve economic efficiency, and solve the problem of environmental pollution. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 The fluorescent permeate wastewater pretreatment system structure diagram of the embodiment.
[0017] Figure 2 The catalytic reactor structure diagram of the embodiment.
[0018] Figure 3A top view structural schematic diagram of a catalytic reactor for an embodiment.
[0019] Figure 4 A structural schematic diagram of a catalyst tank in a catalytic reactor. DETAILED DESCRIPTION
[0020] The utility model will be further described below in conjunction with embodiments, and it should be understood that these embodiments are only used to illustrate the utility model and not used to limit the scope of the utility model, and after reading the description, various equivalent modifications of the description by those skilled in the art all fall within the scope defined by the claims attached to the present application.
[0021] Please combine Figure 1 As shown in the drawing, the pretreatment system of fluorescent permeate liquid wastewater of the embodiment comprises a wastewater bucket 1, a first catalytic reactor 2, a second catalytic reactor 3, an acid liquid tank 4, a neutralization reactor 5, an alkali liquid tank 6, a sedimentation tank 7 and a filter press device 8, the wastewater bucket 1 is connected with the first catalytic reactor 2 through a wastewater pipeline, and the fluorescent permeate liquid wastewater is pumped from the wastewater bucket 1 into the first catalytic reactor 2. The bottom outlet of the first catalytic reactor 2 is connected to the second catalytic reactor 3, and the bottom outlet of the second catalytic reactor 3 is connected to the neutralization reactor 5. The acid liquid tank 4 is connected with the first catalytic reactor 2 and the second catalytic reactor 3 through an acid liquid adding pipeline, and provides acid liquid for the first catalytic reactor 2 and the second catalytic reactor 3 to provide an acidic environment for the catalytic reaction. The alkali liquid tank 6 is connected with the neutralization reactor 5 through an alkali liquid adding pipeline to neutralize the solution after the catalytic reaction. The outlet of the neutralization reactor 5 is connected to the sedimentation tank 7, and the inlet of the filter press device 8 is connected to the sedimentation tank 7.
[0022] The structure of the first catalytic reactor 2 and the second catalytic reactor 3 can be seen from Figures 2 to 4 As shown in the drawing, it comprises a reactor body 100 and a catalyst tank 200, the top of the reactor body 100 is provided with a catalyst tank connecting port 101 and a driving mechanism 103 for driving stirring blades 102, the catalyst tank connecting port 101 is a threaded connecting port, and the driving mechanism 103 is generally a motor and a speed reducer. In the embodiment, the catalyst tank connecting port 101 is provided with six catalyst tanks 200 for mounting six catalyst tanks 200, and the catalyst tank connecting ports 101 are uniformly distributed in the top surface of the catalytic reactor.
[0023] The catalyst tank 200 comprises a storage section 201 and a connecting section 202, wherein the storage section 201 is a columnar structure made of metal mesh, the storage section 201 is provided with an openable and closable top cover 201a, the mesh number of the metal mesh is not greater than 50 meshes, and 18 meshes of metal mesh are selected in the embodiment to ensure that the heterogeneous Fenton-like catalyst can fully contact with the waste liquid. The top cover 201a can be opened and closed in a threaded manner or by a hinge. The connecting section 202 is fixedly connected with the storage section 201, the top of the connecting section 202 is provided with an interface part 202a matched with the catalyst tank connecting port 101, the interface part 202a comprises a threaded section, and the interface part 202a is threadedly connected with the catalyst tank connecting port 101 to make the storage section 201 extend into the reaction kettle body 100. The reaction kettle body 100 is provided with a limiting seat 104, a plurality of limiting rings 105 are arranged above the limiting seat 104, and the limiting seat 104 and the limiting rings 105 are fixed to the side wall of the reaction kettle body 100. When the catalyst tank 200 extends into the reaction kettle body 100, the catalyst tank 200 passes through the plurality of limiting rings 105 and the bottom of the storage section 201 is located on the limiting seat 104, and the limiting of the catalyst tank 200 by the limiting rings 105 and the limiting seat 104 prevents the catalyst tank 200 from interfering with the stirring blades 102.
[0024] The middle part of the reaction kettle body 100 is provided with the stirring blades 102, the output shaft of the motor and the speed reducer at the top extends into the reaction kettle body 100 and is connected with the stirring blades 102, and the stirring blades 102 are driven to rotate by the speed regulating motor. The reaction kettle body 100 is also provided with a heating jacket 106 outside for controlling the reaction temperature.
[0025] The process of treating the fluorescent permeate liquid wastewater by using the fluorescent permeate liquid wastewater pretreatment system of the utility model is as follows: the fluorescent permeate liquid wastewater is stored in the wastewater barrel 1, the fluorescent permeate liquid wastewater in the wastewater barrel 1 is pumped to the first catalytic reaction kettle 2 by using a pump, sulfuric acid is added to the first catalytic reaction kettle 2 from the acid tank 4 to adjust the pH of the wastewater to 2-3, then the temperature in the first catalytic reaction kettle 2 is increased to 80 DEG C, 30% hydrogen peroxide is pumped in, the heterogeneous Fenton catalyst is filled in the catalyst tank 200 and is installed in the first catalytic reaction kettle 2, and the fluorescent permeate liquid wastewater is treated by wet oxidation reaction under sufficient stirring.
[0026] After the reaction is completed, the fluorescent permeate liquid wastewater in the first catalytic reaction kettle 2 is pumped into the second catalytic reaction kettle 3, sulfuric acid is added to the second catalytic reaction kettle 3 from the acid tank 4 to adjust the pH of the wastewater to 2-3, then the temperature in the second catalytic reaction kettle 3 is increased to 80 DEG C, 30% hydrogen peroxide is pumped in again to further degrade by second wet oxidation reaction.
[0027] After the second wet oxidation reaction is completed, the reaction completed acidic liquid is pumped into the neutralization reactor 5, sodium hydroxide is added from the acidic liquid tank 4 into the neutralization reactor 5 to adjust the pH to neutral, and finally the wastewater in the neutralization reactor 5 is discharged to the sedimentation tank 7 to obtain clean water with a required COD concentration by the action of the filter press device 8.
[0028] The COD concentration of the fluorescent permeate wastewater treated in this embodiment is 15000 mg·L -1 When the fluorescent permeate wastewater is treated, the heterogeneous Fenton catalyst is used at 2%, the reaction temperature is 80°C, and the reaction time is 4h, and the treatment of the fluorescent permeate wastewater reaches the best effect, the reuse rate of the catalyst reaches more than 93%, and the COD removal rate of the fluorescent permeate wastewater in two reactions reaches more than 99%. The sludge amount of the fluorescent permeate wastewater treated by the heterogeneous catalyst is only about 5% of the sludge amount of the fluorescent permeate wastewater treated by the Fenton catalyst. From the economic benefits, the heterogeneous catalyst is cheap and easy to obtain, and the recycling rate is high, which greatly improves the economic benefits.
Claims
1. A catalytic reactor characterized by, The reaction kettle body is provided with a catalyst tank connecting port at the top, the catalyst tank comprises a storage section and a connecting section, the storage section is a columnar structure made of metal mesh, the storage section is provided with an openable top cover, the connecting section is fixedly connected with the storage section, the top of the connecting section is provided with an interface part matched with the catalyst tank connecting port, and the interface part is connected with the catalyst tank connecting port to make the storage section extend into the reaction kettle body.
2. The catalytic reactor of claim 1, wherein, The middle part of the reaction kettle body is provided with stirring blades, and the top of the reaction kettle body is provided with a driving mechanism for driving the stirring blades.
3. The catalytic reactor of claim 1, wherein, The reaction kettle body is provided with a limiting seat, and the bottom of the storage section of the catalyst tank is supported by the limiting seat.
4. The catalytic reactor of claim 3, wherein, The reaction kettle body is provided with a limiting seat, and the bottom of the storage section of the catalyst tank is supported by the limiting seat.
5. The catalytic reactor of claim 1, wherein, The reaction kettle body is provided with a limiting seat, and the bottom of the storage section of the catalyst tank is supported by the limiting seat.
6. The catalytic reactor of claim 1, wherein, The reaction kettle body is provided with a limiting seat, and the bottom of the storage section of the catalyst tank is supported by the limiting seat.
7. A pretreatment system for fluorescent penetrant wastewater, characterized by, The reaction kettle body is provided with a limiting seat, and the bottom of the storage section of the catalyst tank is supported by the limiting seat.
8. The system for pretreatment of fluorescent permeate wastewater of claim 7, wherein, The reaction kettle body is provided with a limiting seat, and the bottom of the storage section of the catalyst tank is supported by the limiting seat. The reaction kettle body is provided with a limiting seat, and the bottom of the storage section of the catalyst tank is supported by the limiting seat. The reaction kettle body is provided with a limiting seat, and the bottom of the storage section of the catalyst tank is supported by the limiting seat. The reaction kettle body is provided with a limiting seat, and the bottom of the storage section of the catalyst tank is supported by the limiting seat. The reaction kettle body is provided with a limiting seat, and the bottom of the storage section of the catalyst tank is supported by the limiting seat. 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