Soil treatment eluent treatment device and synthesis device thereof
By loading active materials on the inner surface of the spiral contact reactor and using a microbubble generator, the problems of low efficiency, high cost and secondary pollution in soil pollution repair are solved, and an efficient and environmentally friendly eluent treatment effect is achieved.
Patent Information
- Application Number
- CN202422147238.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-02
AI Technical Summary
Existing soil pollution repair methods are inefficient, costly and may lead to secondary pollution, and the direct discharge of the eluent after soil treatment will pollute the environment without treatment.
The inner surface of the spiral contact reactor is loaded with active materials, combined with a microbubble generator and a synthetic power motor, and the active materials in the spiral contact reactor are fully in contact with the eluent, and the iron-based and carbon-based materials are used to catalyze the ozone to remove organic pollutants in the eluent.
It realizes efficient treatment of soil eluent, reduces treatment costs, avoids secondary pollution, improves ozone removal efficiency, and meets environmental protection requirements.
Smart Images
Figure CN223087620U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of soil treatment, and particularly relates to a soil treatment eluate treatment device and its synthesis device. Background Art
[0002] Organic pollutants enter the soil through leakage, infiltration and other ways, resulting in environmental pollution. These organic substances may be toxic, carcinogenic or persistent, posing a threat to the ecosystem and human health. The treatment of contaminated slurry is an important topic in the environmental protection field, directly affecting water bodies, soil and the surrounding ecological environment.
[0003] At present, the main methods for soil pollution remediation are physical, chemical and biological remediation technologies. However, these traditional remediation methods have the following main problems:
[0004] First, low efficiency: Traditional methods usually require a long time to significantly reduce the concentration of soil pollutants, and it is difficult to meet the urgent needs in practical applications.
[0005] Second, high cost: Many remediation methods require expensive equipment and reagents, and the overall remediation cost is relatively high, restricting large-scale applications.
[0006] Third, secondary pollution: Some methods may cause secondary pollution during the remediation process, such as chemical reagent residues or unqualified discharge of treatment waste liquid, further polluting the environment.
[0007] In the existing soil pollution remediation methods, the eluate after soil treatment cannot be treated. If the eluate after soil treatment is directly discharged, it will pollute the environment, and the eluate must be treated before discharge. Summary of the Utility Model
[0008] In order to solve the above problems existing in the prior art, the purpose of the utility model is to provide a soil treatment eluate treatment device and its synthesis device.
[0009] The technical solution adopted by the utility model is as follows:
[0010] A soil treatment eluate treatment device includes a mixer, a spiral contact reactor and a water storage tank. An eluate discharge pipe is connected to the mixer. The mixer is connected to the lower part of the spiral contact reactor through a pipeline. The inner surface of the spiral contact reactor is loaded with an active material, and the upper part of the spiral contact reactor is connected to the water storage tank.
[0011] The inner surface of the spiral contact reactor of the utility model is loaded with an active material. After the eluate enters the spiral contact reactor, it slowly rises along the internal spiral, and the active material is in full contact with the eluate, so that the eluate can be fully treated. The treated eluate is discharged into the water storage tank from the top of the spiral contact reactor for storage.
[0012] As a preferred embodiment of the present utility model, the mixer is connected by a pipeline to a microbubble generator for generating microbubble liquid. The microbubble liquid generated by the microbubble generator is transported to the mixer, and the microbubble liquid enters the spiral contact reactor together with the eluent.
[0013] As a preferred embodiment of the present utility model, the water storage tank is connected to the microbubble generator through a pipeline. The microbubble generator requires clean water to generate microbubble liquid, and the treated water in the water storage tank can provide the water source for the microbubble generator.
[0014] As a preferred embodiment of the present utility model, a condensate pipe for feeding condensate is connected to the mixer. After collecting the condensate water in the tail gas after soil treatment, it can be discharged into the mixer, and thus can be processed together through the spiral contact reactor.
[0015] As a preferred embodiment of the present utility model, the spiral contact reactor includes an outer cylinder, a central column is fixed inside the outer cylinder, a contact spiral is connected between the central column and the inner wall of the outer cylinder, and the active material is loaded on the surface of the contact spiral. The contact spiral between the central column and the outer cylinder forms a channel for the eluent. During the process that the eluent slowly rises along the contact spiral, it fully contacts and reacts with the active material on the contact spiral, so that the eluent is fully treated.
[0016] As a preferred embodiment of the present utility model, the surface of the contact spiral is a rough surface before loading the active material. The original surface of the contact spiral is a rough surface, which is convenient for loading the base material.
[0017] As a preferred embodiment of the present utility model, the active material is an iron-based material or a carbon-based material. The active material is mainly a material that can catalytically react with ozone microbubbles, mainly including iron-based (FeS2, ZVI) and carbon-based materials (CNT, biochar).
[0018] A synthesis device of a soil treatment eluent treatment device includes a synthesis support, a reactor main body is fixed inside the synthesis support, the spiral contact reactor is placed inside the reactor main body, a synthesis power motor is installed on the synthesis support, the output end of the synthesis power motor is connected to the central column of the spiral contact reactor, and an active material slurry is added inside the reactor main body.
[0019] During the process that the synthesis power motor drives the spiral contact reactor to rotate, the active material slurry fully contacts the spiral contact reactor, so that the active material can adhere to the surface of the spiral contact reactor.
[0020] As a preferred embodiment of the present utility model, a heating device is arranged on the inner wall of the reactor main body.
[0021] As a preferred embodiment of the present utility model, a reactor cover is connected to the top of the reactor main body, and the output shaft of the synthesis power motor passes through the reactor cover.
[0022] The beneficial effects of the present utility model are as follows:
[0023] 1. The inner surface of the spiral contact reactor of the present utility model is loaded with an active material. After the eluent enters the spiral contact reactor, it slowly rises along the internal spiral, and the active material is in full contact with the eluent, so that the eluent can be fully treated.
[0024] 2. During the process that the synthesis power motor of the present utility model drives the spiral contact reactor to rotate, the active material slurry is in full contact with the spiral contact reactor, so that the active material can adhere to the surface of the spiral contact reactor, ensuring that the synthesis device has a good catalytic effect.
[0025] 3. The active material of the present utility model has a high proportion of iron-based materials and a moderate proportion of carbon-based materials, has a good catalytic effect, and has a high ozone removal efficiency. Description of the Drawings
[0026] Figure 1 is a schematic structural diagram of the present utility model;
[0027] Figure 2 is a schematic structural diagram of the spiral contact reactor;
[0028] Figure 3 is an assembly drawing of the synthesis device and the spiral contact reactor.
[0029] In the figure: 1 - mixer; 2 - spiral contact reactor; 3 - water storage tank; 4 - microbubble generator; 5 - synthesis device; 11 - eluent discharge pipe; 12 - condensate pipe; 21 - outer cylinder; 22 - central column; 23 - contact spiral; 51 - synthesis bracket; 52 - reactor main body; 53 - synthesis power motor. Detailed Embodiments
[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.
[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention claimed, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.
[0032] As Figure 1 and Figure 2 shown, the soil treatment eluate treatment device of the present invention includes a mixer 1, a spiral contact reactor 2, and a water storage tank 3. An eluate discharge pipe 11 is connected to the mixer 1. The mixer 1 is connected to the lower part of the spiral contact reactor 2 through a pipeline. The inner surface of the spiral contact reactor 2 is loaded with an active material, and the upper part of the spiral contact reactor 2 is connected to the water storage tank 3.
[0033] The inner surface of the spiral contact reactor 2 of the present invention is loaded with an active material. After the eluate enters the spiral contact reactor 2, it slowly rises along the internal spiral, and the active material is in full contact with the eluate, so that the eluate can be fully treated. The treated eluate is discharged into the water storage tank 3 from the top of the spiral contact reactor 2 for storage.
[0034] Furthermore, the mixer 1 is connected through a pipeline to a microbubble generator 4 for generating microbubble liquid. The microbubble liquid generated by the microbubble generator 4 is transported to the mixer 1, and the microbubble liquid enters the spiral contact reactor 2 together with the eluate.
[0035] The water storage tank 3 is connected to the microbubble generator 4 through a pipeline. The microbubble generator 4 requires clean water to generate microbubble liquid, and the treated water in the water storage tank 3 can provide water source for the microbubble generator 4.
[0036] A condensate pipe 12 for feeding condensate is connected to the mixer 1. After collecting the condensed water in the tail gas after soil treatment, it can be discharged into the mixer 1, and thus can be treated together through the spiral contact reactor 2.
[0037] Specifically, the spiral contact reactor 2 includes an outer cylinder 21, a central column 22 is fixed inside the outer cylinder 21, a contact spiral 23 is connected between the central column 22 and the inner wall of the outer cylinder 21, and the active material is loaded on the surface of the contact spiral 23. The contact spiral 23 between the central column 22 and the outer cylinder 21 forms a channel for the eluate. During the process of the eluate slowly rising along the contact spiral 23, it is in full contact and reaction with the active material on the contact spiral 23, so that the eluate is fully treated.
[0038] Further, the surface of the contact helix 23 is rough before being loaded with the active material. The original surface of the contact helix 23 is rough, which is convenient for loading the base material.
[0039] Among them, the active material is an iron-based material or a carbon-based material. The active material is mainly a material that can undergo a catalytic reaction with ozone microbubbles, mainly including iron-based (FeS2, ZVI) and carbon-based materials (CNT, biochar).
[0040] Such as Figure 3 As shown, the synthesis device of the soil treatment eluate treatment device of the present utility model includes a synthesis support 51. A reactor main body 52 is fixed inside the synthesis support 51. The spiral contact reactor 2 is placed inside the reactor main body 52. A synthesis power motor 53 is installed on the synthesis support 51. The output end of the synthesis power motor 53 is connected to the central column 22 of the spiral contact reactor 2. An active material slurry is added inside the reactor main body 52.
[0041] During the process of the synthesis power motor 53 driving the spiral contact reactor 2 to rotate, the active material slurry is in full contact with the spiral contact reactor 2, so that the active material can adhere to the surface of the spiral contact reactor 2.
[0042] A heating device is provided on the inner wall of the reactor main body 52.
[0043] The top of the reactor main body 52 is connected with a reactor cover body, and the output shaft of the synthesis power motor 53 passes through the reactor cover body.
[0044] The preparation method of the active material slurry of the present utility model includes the following steps:
[0045] S1: Material selection and weighing:
[0046] Pyrite (FeS2): accounts for 20% - 30% of the total weight of the slurry;
[0047] Zero-valent iron (ZVI): accounts for 10% - 20% of the total weight of the slurry;
[0048] Carbon nanotubes (CNT): accounts for 5% - 10% of the total weight of the slurry;
[0049] Biochar: accounts for 10% - 20% of the total weight of the slurry;
[0050] Deionized water: Add ethanol with a volume fraction of 20%. Deionized water is used to adjust the volume of the slurry to the target value to ensure uniform flow of the slurry.
[0051] S2: Mixing:
[0052] Add the weighed pyrite, zero-valent iron, carbon nanotubes, and biochar into a ball mill, and add deionized water;
[0053] Set the ball mill to 300 revolutions per minute and mix for 24 hours to evenly disperse the particles and ensure the fluidity of the slurry.
[0054] S3: Ultrasonic dispersion:
[0055] Place the mixed slurry in an ultrasonic processor, set the frequency to 20 kHz, and process for 30 minutes. Ultrasonic treatment helps to break up the agglomeration of carbon nanotubes and improve the dispersion of the slurry.
[0056] S4: Adjust the viscosity of the slurry:
[0057] Adjust the viscosity of the slurry to 50 - 150 mPa·s. This can be achieved by controlling the amount of water added or adding a small amount of viscosity regulator (such as carboxymethyl cellulose, CMC). The addition concentration of viscosity regulators such as carboxymethyl cellulose (CMC) depends on the target viscosity of the slurry and the proportion of other components in the slurry. Usually, the addition amount of CMC is between 0.1% and 1.0% of the total weight of the slurry.
[0058] S5: Filtration of the slurry:
[0059] Filter the slurry using a 100 μm filter screen to remove large particles or substances that are not fully dispersed;
[0060] S6: Final adjustment and storage:
[0061] Adjust the pH value of the slurry to 7 - 8;
[0062] Store the slurry in a sealed container and refrigerate it at a temperature below 4°C to avoid contact of the material with oxygen in the air.
[0063] Examples:
[0064] Table 1 shows the comparison of 4 different formulations.
[0065]
[0066]
[0067] Example 1:
[0068] The contents of pyrite and zero-valent iron are relatively high, and these materials show high activity in catalyzing ozone decomposition. Although the content of carbon nanotubes is low, the overall effect is significant, with the ozone removal efficiency reaching 86% and the terminal ozone concentration being 7 mg / L.
[0069] Example 2:
[0070] In Example 2, the content of carbon-based materials (CNT and biochar) is relatively high, which helps to improve the adsorption capacity of the slurry. However, due to the slightly lower proportion of iron-based materials, the overall catalytic efficiency is slightly lower, resulting in an end ozone concentration of 10 mg / L and a removal efficiency of 80%.
[0071] Example 3:
[0072] In Example 3, although the content of iron-based materials is the lowest, the proportion of carbon nanotubes is the highest. This combination produces the best catalytic effect, with an ozone removal efficiency of 94% and the lowest end ozone concentration of 3 mg / L.
[0073] Example 4:
[0074] This example combines a relatively high proportion of iron-based materials and a moderate amount of carbon-based materials, with a moderate addition of CMC. The results show a removal efficiency of 84% and an end ozone concentration of 8 mg / L.
[0075] In the present utility model, the main components of the active material slurry are:
[0076] Iron-based materials:
[0077] Pyrite (FeS2): mainly used to catalyze the decomposition reaction of ozone to generate highly active oxides such as hydroxyl radicals.
[0078] Zero-valent iron (ZVI): has strong reducibility, can promote the activation of ozone, and improve the reaction efficiency.
[0079] Carbon-based materials:
[0080] Carbon nanotubes (CNT): have a high surface area and excellent electrical conductivity, and can enhance the catalytic activity of the slurry.
[0081] Biochar: obtained through the carbonization process of organic materials, has a porous structure and good adsorption performance, and further improves the reaction efficiency.
[0082] The active material of the present utility model has a relatively high proportion of iron-based materials and a moderate amount of carbon-based materials, has a good catalytic effect, and a high ozone removal efficiency.
[0083] The present utility model is not limited to the above optional embodiments. Anyone can obtain other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in its shape or structure, as long as the technical solutions fall within the scope defined by the claims of the present utility model, they all fall within the protection scope of the present utility model.
Claims
1. A soil treatment and eluent treatment device, characterized in that: It includes a mixer (1), a spiral contact reactor (2) and a water storage tank (3). An eluent discharge pipe (11) is connected to the mixer (1). The mixer (1) is connected to the lower part of the spiral contact reactor (2) through a pipeline. The inner surface of the spiral contact reactor (2) is loaded with an active material, and the upper part of the spiral contact reactor (2) is connected to the water storage tank (3).
2. The soil treatment and eluent treatment device according to claim 1, wherein: The mixer (1) is connected with a microbubble generator (4) for generating microbubble liquid through a pipeline.
3. The soil treatment and eluent treatment device according to claim 2, characterized in that: The water storage tank (3) is connected with the microbubble generator (4) through a pipeline.
4. A soil treatment eluent treatment device according to claim 1, characterized in that: A condensate pipe (12) for feeding condensate is connected to the mixer (1).
5. The soil treatment and eluent treatment device according to claim 1, characterized in that: The spiral contact reactor (2) includes an outer cylinder (21). A central column (22) is fixed inside the outer cylinder (21). A contact spiral (23) is connected between the central column (22) and the inner wall of the outer cylinder (21). The active material is loaded on the surface of the contact spiral (23).
6. The soil treatment eluent treatment device according to claim 5, characterized in that: The surface of the contact spiral (23) is a rough surface before loading the active material.
7. A soil treatment eluent treatment device according to claim 1, characterized in that: The active material is an iron-based material or a carbon-based material.
8. A synthesis device for a soil treatment eluent treatment device, which is used to synthesize the spiral contact reactor (2) of the soil treatment eluent treatment device described in claim 5, and is characterized in that: It includes a synthesis support (51). A reactor main body (52) is fixed inside the synthesis support (51). The spiral contact reactor (2) is placed inside the reactor main body (52). A synthesis power motor (53) is installed on the synthesis support (51). The output end of the synthesis power motor (53) is connected to the central column (22) of the spiral contact reactor (2). An active material slurry is added inside the reactor main body (52).
9. The synthesis device of a soil treatment eluent treatment device according to claim 8, characterized in that: A heating device is arranged on the inner wall of the reactor main body (52).
10. The synthesis device of a soil treatment eluent treatment device according to claim 8, characterized in that: The top of the reactor main body (52) is connected with a reactor cover body. The output shaft of the synthesis power motor (53) passes through the reactor cover body.