Fenton oxidation tank filler frame and fenton reaction tank device

Abstract

The utility model belongs to industrial wastewater treatment technical field discloses a kind of Fenton oxidation pond packing shelf and Fenton reaction pond device, including packing shelf body and at least two hanging material layers, and packing shelf body includes upper shelf body and lower shelf body, and both are detachably connected along vertical direction, and upper shelf body top is provided with lifting connection structure;At least two hanging material layers are respectively arranged on upper shelf body and lower shelf body, and each layer hanging material layer includes multiple hanging material cross beams that are arranged in parallel along horizontal interval, and multiple filter bags are detachably and interval hung along the length direction of each hanging material cross beam, and filter bag interior is filled with zero-valent iron reagent, and raw water in oxidation pond can contact reaction with zero-valent iron reagent in its interior through the small hole of filter bag.The utility model effectively improves the contact efficiency of reaction reagent, reduces ferrous sulfate consumption, makes reaction process more sufficient, accelerates reaction rate, improves treatment effect;Meanwhile, it is convenient to quickly replace and supplement reaction reagent on packing shelf, and operation is simple.

Description

Technical Field

[0001] This utility model relates to the field of industrial wastewater treatment technology, and in particular to a Fenton oxidation tank packing frame and a Fenton reaction tank device. Background Technology

[0002] The Fenton reaction is a reaction involving hydrogen peroxide (H₂O₂) and ferrous ions (Fe²⁺). 2+ The oxidation reaction, with Fe as the main reactant, is widely used in the degradation of organic pollutants and the treatment of industrial wastewater. This reaction process mainly includes three stages: chain initiation, chain propagation, and chain termination. 2+ Under the catalytic action of H2O2, hydroxyl radicals (-OH) are decomposed to generate hydroxyl radicals, thereby initiating a chain reaction. Hydroxyl radicals are a highly active oxidant (oxidation potential 2.8V), which can efficiently destroy the structure of most organic molecules and achieve deep oxidative degradation of pollutants. With the continuous improvement of environmental protection requirements, Fenton oxidation technology is increasingly widely used in industrial wastewater treatment.

[0003] Currently, the Fenton reaction is typically carried out in an oxidation tank. The tank is acidified to adjust the pH to 3-4, then a pre-prepared ferrous sulfate solution is added, followed by hydrogen peroxide solution. The reaction produces highly oxidizing hydroxyl radicals. However, existing Fenton oxidation tank packing frames generally suffer from simple structures and insufficient contact with the reactants, hindering the smooth progress of chain initiation and chain propagation, resulting in slow reaction rates and poor treatment efficiency. Furthermore, because the packing material is gradually consumed during the Fenton reaction, adding packing material to traditional packing frames is complex and time-consuming, further reducing the operating efficiency and stability of the oxidation tank. Utility Model Content

[0004] The purpose of this invention is to provide a Fenton oxidation tank packing rack and a Fenton reaction tank device, which can effectively improve the contact efficiency of the reaction reagents, reduce the consumption of ferrous sulfate, and make the reaction process more complete, thereby accelerating the reaction rate and improving the treatment effect. At the same time, the packing rack has a reasonable structural design, which facilitates the quick replacement and replenishment of the reaction reagents on the packing rack. It is easy to operate and effectively improves the operating efficiency and system stability of the oxidation tank.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Fenton oxidation tank packing frame, including:

[0007] The filler frame body includes an upper frame and a lower frame, which are detachably connected in the vertical direction. The top of the upper frame is provided with a lifting structure that can be detachably connected to an external lifting device.

[0008] At least two material hanging layers are respectively set on the upper frame and the lower frame. Each material hanging layer includes multiple material hanging beams. The multiple material hanging beams are arranged side by side at intervals in the horizontal direction. Each material hanging beam detachably suspends multiple filter bags at intervals along its length. Each filter bag has multiple small holes on its surface for fluid permeation. The filter bag is filled with zero-valent iron reactant. The raw water in the oxidation tank can pass through the small holes of the filter bag and react with the zero-valent iron reactant inside.

[0009] Furthermore, each of the hanging beams has multiple evenly spaced grooves along its length, and the filter bag is tied to the hanging beam by a rope and can be fixed in the groove.

[0010] Furthermore, multiple filter bags are tied to the binding rope at intervals.

[0011] Furthermore, the Fenton oxidation tank packing frame also includes a fall-prevention grid, which is disposed below the material hanging layer of the lower frame.

[0012] Furthermore, the packing frame body also includes a connector for detachably connecting the upper frame body and the lower frame body.

[0013] Furthermore, the connector includes a positioning pin, and the top of the lower frame has at least two first positioning holes along its vertical direction. The bottom of the upper frame can be inserted into the top of the lower frame, and its bottom has a second positioning hole corresponding to the position of the first positioning hole along its vertical direction. The positioning pin passes through the first positioning hole and the second positioning hole to connect the upper frame and the lower frame.

[0014] Furthermore, the lifting structure is configured as a lifting lug.

[0015] Furthermore, the Fenton oxidation tank packing frame also includes an aeration disc, which is disposed below the material hanging layer on the lower frame.

[0016] A Fenton reaction tank apparatus includes a packing frame slide, an oxidation tank, and a Fenton oxidation tank packing frame as described in any of the above embodiments. The external lifting device is capable of lifting the Fenton oxidation tank packing frame via the lifting structure and installing it on the packing frame slide, which is placed inside the oxidation tank.

[0017] Furthermore, each layer of the hanging material is provided with an outwardly protruding limiting bracket at its edge, and the limiting bracket is connected in cooperation with the packing frame slide.

[0018] The beneficial effects of this utility model are:

[0019] This invention provides a Fenton oxidation tank packing frame and a Fenton reaction tank device, including a packing frame body and at least two hanging layers. Multiple filter bags are arranged at intervals along the length of the hanging beams, with a reasonable spacing between each filter bag. Simultaneously, height intervals are also provided between different hanging layers of the upper and lower frames, thereby effectively enhancing the flow of raw water around the filter bags, improving its contact efficiency with the filter bag surface, increasing the reaction surface area, and improving the reaction rate and oxidation efficiency. The packing frame body consists of an upper frame and a lower frame, which are detachably connected. This facilitates the installation or replacement of filter bags on their respective hanging layers in the disassembled state, improving operational convenience. In the assembled state, it significantly increases the vertical filter bag arrangement density, thereby further improving the reactant load and reaction efficiency per unit volume. A lifting structure is provided at the top of the upper frame, allowing an external lifting device to directly lift the packing frame out of the oxidation tank, where the suspended filter bags can be replaced. Furthermore, compared to the traditional Fenton reaction system that relies on the addition of ferrous sulfate, this method utilizes zero-valent iron reactant filled inside the filter bag, which slowly dissolves and releases Fe under acidic conditions. 2+ Its characteristics enable in-situ continuous supply of Fenton reaction catalyst, thereby significantly reducing the external addition requirements of soluble iron salts such as ferrous sulfate, reducing reagent consumption and operating costs, reducing iron sludge by-product production, and improving the stability and controllability of system operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the Fenton oxidation tank packing frame in this utility model;

[0021] Figure 2 This is a front view of the Fenton oxidation tank packing frame in this utility model;

[0022] Figure 3 This is a top view of the Fenton oxidation tank packing frame in this utility model.

[0023] In the picture:

[0024] 1. Filler frame body; 11. Upper frame body; 12. Lower frame body; 13. Connecting parts;

[0025] 2. Material hanging layer; 21. Material hanging beam; 22. Groove; 3. Anti-fall grid; 4. Limiting bracket; 5. Lifting structure; 6. Aeration disc; 7. Reinforcing rib. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] Please refer to Figures 1 to 3 As shown, this embodiment provides a Fenton oxidation tank packing frame, including a packing frame body 1 and at least two hanging layers 2. The packing frame body 1 includes an upper frame 11 and a lower frame 12, which are detachably connected in the vertical direction. The top of the upper frame 11 is provided with a lifting structure 5 that is detachably connected to an external lifting device. At least two hanging layers 2 are respectively disposed on the upper frame 11 and the lower frame 12. Each hanging layer 2 includes multiple hanging beams 21, which are arranged side by side at intervals in the horizontal direction. Each hanging beam 21 detachably suspends multiple filter bags at intervals along its length. Each filter bag has multiple small holes on its surface for fluid permeation. The filter bag is filled with zero-valent iron reactant. The raw water in the oxidation tank can pass through the small holes of the filter bag and react with the zero-valent iron reactant inside.

[0031] Operators can fill multiple filter bags with zero-valent iron reactant at a set dosage according to processing needs. The outer surface of the filter bags has multiple small holes for liquid and gas permeation, facilitating the penetration of air and raw water in the oxidation tank through the filter bags and ensuring full contact with the zero-valent iron reactant inside, thus promoting the Fenton reaction. Multiple filter bags are arranged at intervals along the length of the hanging beam 21, with a reasonable spacing between each filter bag. At the same time, there are also height intervals between different hanging layers 2 of the upper frame 11 and the lower frame 12, thereby effectively enhancing the flow of raw water around the filter bags, improving its contact efficiency with the filter bag surface, increasing the reaction specific surface area, strengthening the mass transfer process between raw water and reactant, and thus improving the reaction rate and oxidation efficiency.

[0032] The packing frame body 1 consists of an upper frame 11 and a lower frame 12, which are detachably connected. This allows for the installation or replacement of filter bags on their respective hanging layers 2 when disassembled, reducing maintenance intensity and improving operational convenience. When assembled, the vertical filter bag arrangement density can be significantly increased through the three-dimensional combination of the upper and lower frames 12, thereby further improving the reactant load and reaction efficiency per unit volume. The top of the upper frame 11 is equipped with a hoisting structure, allowing external lifting devices to directly lift the packing frame out of the oxidation tank, where the suspended filter bags can be replaced.

[0033] Furthermore, compared to the traditional Fenton reaction system that relies on the addition of ferrous sulfate, this method utilizes zero-valent iron reactant filled inside the filter bag, which slowly dissolves and releases Fe under acidic conditions. 2+ Its characteristics enable in-situ continuous supply of Fenton reaction catalyst, thereby significantly reducing the external addition requirements of soluble iron salts such as ferrous sulfate, reducing reagent consumption and operating costs, reducing iron sludge by-product production, and improving the stability and controllability of system operation.

[0034] This Fenton oxidation tank packing frame not only effectively improves the contact efficiency of the reaction agents, accelerates the reaction rate, and enhances the treatment effect, but also has the advantages of reasonable structural design, convenient installation and replacement, and simple operation and maintenance, significantly improving the operating efficiency and stability of the oxidation tank system.

[0035] For example, the external lifting device may be, but is not limited to, a crane, and no specific limitation is made here.

[0036] Optionally, the lifting structure 5 is configured as a lifting lug. The lifting lug has a simple structure and provides a fixed lifting position for the external lifting device, making the lifting more stable.

[0037] For example, zero-valent iron reactants may be, but are not limited to, iron filings, etc., and no specific limitation is made here.

[0038] Optionally, the filter bags can be, but are not limited to, acid and alkali resistant filter bags to prevent leakage of the internal filling reactant after the filter bags are corroded by acidic or alkaline liquids, thus effectively extending their service life.

[0039] like Figure 1 As shown, optionally, each hanging beam 21 has multiple evenly spaced grooves 22 along its length. Filter bags are tied to the hanging beam 21 with ropes and can be fixed in the grooves 22. The grooves 22 serve as positioning guides, ensuring that the suspension position of each filter bag is fixed and the spacing is consistent. This effectively prevents the filter bags from gathering or shifting during the hoisting or lowering of the Fenton oxidation tank packing frame, ensuring uniform spatial distribution of the hanging layer 2 and further optimizing the water flow path and reaction distribution in the oxidation tank. In addition, it can prevent the filter bags from floating or detaching from the hanging structure due to changes in buoyancy caused by the consumption of reactants inside the filter bags, improving the stability and safety of the system operation. During operation, the operator only needs to align the ropes with the grooves 22 to tie them, which can quickly complete the filter bag installation, significantly improving assembly efficiency and ease of operation.

[0040] In some other embodiments, each hanging beam 21 is provided with a hook along its length, on which the filter bag can be hung.

[0041] In some optional embodiments, each hanging layer 2 is provided with a reinforcing rib 7 between it and the upper frame 11 and the lower frame 12 to support the hanging layer 2. The reinforcing rib 7 can effectively enhance the connection rigidity between the hanging layer 2 and the upper frame 11 and the lower frame 12, improve its load-bearing capacity for the filter bag and the weight of the reactant, and prevent the hanging layer 2 from sagging, deforming or cracking.

[0042] Understandably, operators can adjust the density of filter bags on the hanging beam 21 according to the actual situation to improve the applicability of the Fenton oxidation tank packing frame.

[0043] In some alternative embodiments, multiple filter bags are tied to the binding rope at intervals. The filter bags can be tied to the same binding rope at intervals. The operator can hang the entire set of filter bags on the hanging beam 21 at one time, eliminating the tedious operation process of threading ropes and aligning them one by one, thereby improving assembly efficiency.

[0044] Furthermore, multiple knots with fixed intervals can be pre-set on the binding ropes. The binding ropes on the filter bags can be tied to the corresponding knots and hung on the packing frame structure, thereby realizing the orderly layering and hanging of the filter bags. This is beneficial for the batch pre-assembly and transportation of filter bags. On-site installation only requires quick positioning and fixing to complete the filter bag deployment, significantly improving construction efficiency and positioning accuracy.

[0045] Optionally, the binding rope may be, but is not limited to, nylon rope, and no specific limitation is made here.

[0046] During the operation of the Fenton oxidation tank packing frame, in order to prevent the filter bags from falling to the bottom of the oxidation tank, in some embodiments, the Fenton oxidation tank packing frame also includes a fall-prevention grid 3, which is set below the hanging layer 2 of the lower frame 12. The fall-prevention grid 3 can catch the filter bags in time when they become loose or damaged, preventing them from falling to the bottom of the tank. This facilitates quick recovery and replacement of the filter bags by operators, eliminating the need for personnel to enter the tank, improving maintenance efficiency, and keeping the bottom of the tank clean to avoid secondary pollution.

[0047] In some embodiments, the packing frame body 1 further includes a connector 13 for detachably connecting the upper frame 11 and the lower frame 12; wherein, the detachable connector 13 allows the upper frame 11 and the lower frame 12 to be disassembled separately, and the operator can install or replace the filter bags of each layer of hanging material 2 separately, reducing the difficulty of manual operation and improving maintenance efficiency.

[0048] Specifically, the connector 13 includes a positioning pin. The top of the lower frame 12 has at least two first positioning holes along its vertical direction. The bottom of the upper frame 11 can be inserted into the top of the lower frame 12, and its bottom has a second positioning hole corresponding to the position of the first positioning holes along its vertical direction. The positioning pin passes through the first positioning hole and the second positioning hole to connect the upper frame 11 and the lower frame 12. The structure of plug-in fitting and positioning pin can achieve a tight connection between the upper frame 11 and the lower frame 12 without increasing the complexity of the mechanical structure, thereby improving the overall rigidity and stability of the packing frame.

[0049] like Figure 2 As shown, in some optional embodiments, the Fenton oxidation tank packing frame also includes an aeration disc 6, which is disposed below the hanging layer 2 on the lower frame 12. The aeration disc 6 can continuously release microbubbles in the oxidation tank, providing sufficient oxygen. When the bubbles rise, they generate a disturbance effect, enhancing the circulation and stirring of the raw water in the tank, promoting full contact between the raw water and the zero-valent iron reactant in the filter bag, increasing the number of generated hydroxyl radicals, thereby accelerating the oxidation and decomposition process of organic pollutants and improving the reaction rate and treatment efficiency.

[0050] Furthermore, the aeration discs 6 are arranged in a matrix below the material hanging layer 2 on the lower frame 12, which makes the oxidation reaction more complete.

[0051] This embodiment also provides a Fenton reaction tank device, including a packing frame slide, an oxidation tank, and a Fenton oxidation tank packing frame as described in any of the above embodiments. An external lifting device can lift the Fenton oxidation tank packing frame through the lifting structure 5 and install it on the packing frame slide, with the packing frame slide placed inside the oxidation tank.

[0052] Multiple filter bags are arranged at intervals along the length of the hanging beam 21 on the Fenton oxidation tank packing frame, with a reasonable spacing between each filter bag. Simultaneously, height intervals are also provided between different hanging layers 2 of the upper frame 11 and lower frame 12. This effectively enhances the flow of raw water around the filter bags, improves its contact efficiency with the filter bag surface, increases the reaction surface area, and improves the reaction rate and oxidation efficiency. The packing frame body 1 consists of an upper frame 11 and a lower frame 12, which are detachably connected. This facilitates the installation or replacement of filter bags on their respective hanging layers 2 in the disassembled state, improving operational convenience. In the assembled state, it significantly increases the vertical filter bag arrangement density, thereby further improving the reactant load and reaction efficiency per unit volume. The top of the upper frame 11 is equipped with a lifting structure, allowing external lifting devices to directly lift the packing frame out of the oxidation tank, where the suspended filter bags can be replaced. Furthermore, compared to the traditional Fenton reaction system that relies on the addition of ferrous sulfate, by filling the filter bags with zero-valent iron reactant, the slow dissolution and release of Fe under acidic conditions... 2+ Its characteristics enable in-situ continuous supply of Fenton reaction catalyst, thereby significantly reducing the external addition requirements of soluble iron salts such as ferrous sulfate, reducing reagent consumption and operating costs, and reducing the by-product production of iron sludge.

[0053] Furthermore, each layer of material hanging 2 is provided with an outwardly protruding limiting bracket 4 at its edge, which is connected to the packing frame slide. The limiting bracket 4 can cooperate with the guide groove or limiting groove on the packing frame slide to guide the packing frame during hoisting or sliding into the slide, ensuring that it enters the designated installation position correctly and avoiding skewness, jamming or misalignment. After the packing frame is in place, the limiting bracket 4 and the packing frame slide form a snap-fit ​​or interlocking structure, which can effectively limit the lateral or front-back sway of the packing frame, enhance the overall assembly firmness, and prevent displacement during operation.

[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A Fenton oxidation tank packing frame, characterized in that, include: The filler frame body (1) includes an upper frame (11) and a lower frame (12). The upper frame (11) and the lower frame (12) are detachably connected in the vertical direction. The top of the upper frame (11) is provided with a lifting structure (5) that is detachably connected to an external lifting device. At least two hanging layers (2) are respectively set on the upper frame (11) and the lower frame (12). Each hanging layer (2) includes multiple hanging beams (21). The multiple hanging beams (21) are arranged side by side at intervals in the horizontal direction. Each hanging beam (21) detachably suspends multiple filter bags at intervals along its length. Each filter bag has multiple small holes for fluid permeation on its surface. The filter bag is filled with zero-valent iron reactant. The raw water in the oxidation tank can pass through the small holes of the filter bag and react with the zero-valent iron reactant inside it.

2. The Fenton oxidation tank packing frame according to claim 1, characterized in that, Each of the material hanging beams (21) has multiple evenly spaced grooves (22) along its length. The filter bag is tied to the material hanging beam (21) by a rope and can be fixed in the groove (22).

3. The Fenton oxidation tank packing frame according to claim 2, characterized in that, Multiple filter bags are tied to the rope at intervals.

4. The Fenton oxidation tank packing frame according to claim 3, characterized in that, The Fenton oxidation tank packing frame also includes a fall-prevention grid (3), which is located below the hanging layer (2) of the lower frame (12).

5. The Fenton oxidation tank packing frame according to claim 1, characterized in that, The packing frame body (1) also includes a connector (13) for detachably connecting the upper frame (11) and the lower frame (12).

6. The Fenton oxidation tank packing frame according to claim 5, characterized in that, The connector (13) includes a positioning pin. The top of the lower frame (12) is provided with at least two first positioning holes along its vertical direction. The bottom end of the upper frame (11) can be inserted into the top of the lower frame (12), and its bottom end is provided with a second positioning hole corresponding to the position of the first positioning hole along its vertical direction. The positioning pin passes through the first positioning hole and the second positioning hole to connect the upper frame (11) and the lower frame (12).

7. The Fenton oxidation tank packing frame according to claim 1, characterized in that, The lifting structure (5) is configured as a lifting lug.

8. The Fenton oxidation tank packing frame according to any one of claims 1-7, characterized in that, The Fenton oxidation tank packing frame also includes an aeration disc (6), which is located below the hanging material layer (2) on the lower frame (12).

9. A Fenton reaction cell apparatus, characterized in that, Includes a packing frame slide, an oxidation tank, and a Fenton oxidation tank packing frame as described in any one of claims 1-8. The external lifting device is capable of lifting the Fenton oxidation tank packing frame through the lifting structure (5) and installing it on the packing frame slide, which is placed inside the oxidation tank.

10. The Fenton reaction cell apparatus according to claim 9, characterized in that, Each layer of the hanging material layer (2) is provided with an outwardly protruding limiting bracket (4) at its edge, and the limiting bracket (4) is connected to the packing frame slide.

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