Sectional temperature control type hydrogen peroxide oxidation catalyst reaction device

Abstract

The utility model provides a sectional temperature control type hydrogen peroxide oxidation catalyst reaction device, which relates to the field of sewage oxidation treatment and comprises a physical treatment box and chemical treatment boxes, the upper end of the physical treatment box is connected with a sewage inlet pipe, the physical treatment box is communicated with the chemical treatment boxes through connecting pipes, and the chemical treatment boxes are communicated through connecting pipes. An electric heating plate is arranged on the outer side of the chemical treatment box, the upper side of the electric heating plate is connected with a temperature controller, a lower partition plate and an upper partition plate are arranged in the chemical treatment box, a catalyst layer is arranged between the lower partition plate and the upper partition plate, a water distribution pipe is arranged on the inner side of the chemical treatment box, and the upper end of the water distribution pipe is connected with a water inlet pipe. The upper end of the water inlet pipe is connected with a flow dividing pipe, the upper end of the flow dividing pipe is connected with a hydrogen peroxide inlet pipe, and a flow valve is installed in a pipeline of the flow dividing pipe. The sectional temperature control type sewage treatment device has a sectional temperature control type treatment effect, and the sewage treatment degree and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater oxidation treatment technology, specifically to a segmented temperature-controlled hydrogen peroxide oxidation catalyst reaction device. Background Technology

[0002] Industrial wastewater has always been a key focus and challenge in wastewater treatment due to its large discharge volume and high treatment difficulty. Because of significant differences in production processes, the types of pollutants in industrial wastewater vary considerably, often exhibiting characteristics such as high pollutant concentration, deep color, and difficulty in degradation. Treatment methods for industrial wastewater generally include physical, chemical, and biological methods, as well as combinations thereof. Chemical methods involve the use of hydrogen peroxide, among others.

[0003] A search revealed existing technology (publication number: CN215516990U), which describes "a hydrogen peroxide catalytic reaction device, comprising a tank, with two symmetrically arranged outlet pipes fixedly connected to the upper side wall of the tank, and a manhole provided on the side wall of the tank. A feeding assembly is provided on the lower side wall of the tank, and a support plate is fixedly connected to the inner side wall of the tank. A packing layer is provided above the support plate, and multiple arrayed circular holes are opened on the upper side wall of the support plate. A circular groove is opened at the upper end of each circular hole, and a water distribution cap is inserted into each of the circular holes. The water distribution cap is detachably connected to the circular groove via an installation mechanism. This hydrogen peroxide catalytic reaction device combines physical and chemical filtration, and under the action of the catalyst layer, it catalyzes the reaction to ensure the effectiveness and efficiency of wastewater treatment. Furthermore, it facilitates the installation and removal of the water distribution caps, thereby facilitating cleaning, maintenance, and replacement."

[0004] While existing hydrogen peroxide catalytic reaction devices facilitate the installation and disassembly of components, they still have some shortcomings: Firstly, to accelerate treatment efficiency, existing hydrogen peroxide catalytic reaction devices, when the wastewater inflow rate is high, result in short contact time between the catalyst and hydrogen peroxide, leading to inaccurate treatment results. Secondly, industrial wastewater contains complex substances with different properties; therefore, a single tank temperature cannot guarantee effective oxidation of all substances, as different substances require different catalytic reaction temperatures, resulting in poor treatment performance. Utility Model Content

[0005] To overcome the shortcomings of the existing technology, a segmented temperature-controlled hydrogen peroxide oxidation catalyst reaction device is provided to solve the problems mentioned in the background technology.

[0006] To achieve the above objectives, a segmented temperature-controlled hydrogen peroxide oxidation catalyst reaction device is provided, comprising: a physical treatment tank and a chemical treatment tank. The upper end of the physical treatment tank is connected to a wastewater inlet pipe, and the physical treatment tank and the chemical treatment tank are connected to each other via connecting pipes. An electric heating plate is provided on the outside of the chemical treatment tank, and a temperature controller is connected to the upper side of the electric heating plate. A lower partition and an upper partition are provided inside the chemical treatment tank, and a catalyst layer is provided between the lower partition and the upper partition. A water distribution pipe is provided inside the chemical treatment tank, and a water inlet pipe is connected to the upper end of the water distribution pipe. A diversion pipe is connected to the upper end of the water inlet pipe, and a hydrogen peroxide inlet pipe is connected to the upper end of the diversion pipe. A flow valve is installed in the pipe of the diversion pipe.

[0007] Furthermore, the upper side of the physical treatment box is provided with a water distribution plate, and the lower side of the water distribution plate is provided with a quartz sand filter layer. The lower side of the quartz sand filter layer is provided with a flow guide bottom, and the lower end of the sewage inlet pipe is connected to the water distribution plate.

[0008] Furthermore, the electric heating plate is equipped with a heating resistance wire inside, and the electric heating plate is sandwiched between the front and rear outer walls of the chemical processing tank.

[0009] Furthermore, the lower end of the thermostat is connected to a branch pipe, and the branch pipe is equipped with a wire, and the thermostat is connected to the electric heating plate through the wire.

[0010] Furthermore, the lower partition is fixed to the inner bottom of the chemical treatment box, and the upper partition is fixed to the inner top of the chemical treatment box, and both the lower partition and the upper partition are smaller than the internal height of the chemical treatment box in the vertical direction.

[0011] Furthermore, the water distribution pipe passes laterally through the upper partition and is located on the upper side of the lower partition.

[0012] Furthermore, a spray head is connected to the lower end of the water distribution pipe, and the spray head is located on the upper side of the catalyst layer.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The water distribution cap inside the physical treatment tank diffuses the wastewater entering through the wastewater inlet pipe, allowing it to fall extensively onto the quartz sand filter layer, thus accelerating the filtration efficiency. The wastewater then enters the chemical treatment tank through the connecting pipe. Here, the inverted channel formed by the upper and lower partitions in the chemical treatment tank allows the physically filtered wastewater to flow through the catalyst layer in an up-down S-shape. At the same time, hydrogen peroxide is sprayed from the spray head on the lower side of the water distribution pipe, thereby extending the contact time between the wastewater and the catalyst layer and hydrogen peroxide. This significantly improves the oxidation treatment effect without increasing the equipment volume.

[0015] 2. By utilizing multiple chemical treatment tanks, along with electric heating plates, branch pipes, and temperature controllers installed on their exteriors, each chemical treatment tank is heated. Based on the characteristics of different substances contained in the wastewater, the wastewater undergoes specific oxidation and catalytic reactions at appropriate temperatures as it passes through each chemical treatment tank. This achieves targeted treatment of specific substances (such as heavy metals) in the wastewater, thereby improving the degree of wastewater purification. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0017] Figure 2 This is a schematic diagram of the internal structure of the physical processing box in an embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram of the internal structure of the chemical treatment box in an embodiment of this utility model.

[0019] Figure 4 This is a schematic diagram of the connection structure between the water distribution pipe and the upper partition plate in an embodiment of this utility model.

[0020] In the diagram: 1. Sewage inlet pipe; 2. Physical treatment tank; 21. Water distribution plate; 22. Quartz sand filter layer; 23. Guide bottom; 3. Connecting pipe; 4. Chemical treatment tank; 41. Water distribution pipe; 411. Water inlet pipe; 412. Spray head; 42. Lower partition; 43. Upper partition; 44. Catalyst layer; 5. Thermostat; 6. Branch pipe; 7. Diversion pipe; 8. Electric heating plate; 9. Hydrogen peroxide inlet pipe; 10. Flow valve. Detailed Implementation

[0021] Reference Figures 1 to 4 As shown, this utility model provides a segmented temperature-controlled hydrogen peroxide oxidation catalyst reaction device, including: a physical treatment tank 2 and a chemical treatment tank 4. The upper end of the physical treatment tank 2 is connected to a sewage inlet pipe 1, and the physical treatment tank 2 and the chemical treatment tank 4, as well as the chemical treatment tank 4, are connected by a connecting pipe 3. An electric heating plate 8 is provided on the outside of the chemical treatment tank 4, and a temperature controller 5 is connected to the upper side of the electric heating plate 8. A lower partition 42 and an upper partition 43 are provided inside the chemical treatment tank 4, and a catalyst layer 44 is provided between the lower partition 42 and the upper partition 43. A water distribution pipe 41 is provided inside the chemical treatment tank 4, and a water inlet pipe 411 is connected to the upper end of the water distribution pipe 411. A diversion pipe 7 is connected to the upper end of the water inlet pipe 411, and a hydrogen peroxide inlet pipe 9 is connected to the upper end of the diversion pipe 7. A flow valve 10 is installed in the pipe of the diversion pipe 7.

[0022] In this embodiment, the physical treatment box 2, the chemical treatment box 4, and the external components constitute the segmented temperature-controlled hydrogen peroxide oxidation catalyst reaction device involved in this application.

[0023] The chemical treatment tank 4 can be set in multiple sections according to the required degree of wastewater purification. The three sections set in this application do not represent the standard number of sections. Then, a clean water discharge pipe is provided on the outside of the last section of the chemical treatment tank 4.

[0024] The catalyst layer 44 includes an outer wrapping layer (the wrapping layer is made of a porous material that does not participate in the reaction) and a manganese dioxide catalyst, so that the manganese dioxide is wrapped in the wrapping layer and fixed between the partitions.

[0025] Specifically, the hydrogen peroxide inlet pipe 9 is set according to the segment length, and its end is set as a sealing end, while the other end is connected to the hydrogen peroxide supply equipment.

[0026] like Figures 2 to 4 In the physical treatment tank 2, a water distribution plate 21 is provided on the upper side of the interior, and a quartz sand filter layer 22 is provided on the lower side of the water distribution plate 21. A flow guide bottom 23 is provided on the lower side of the quartz sand filter layer 22. At the same time, the lower end of the sewage inlet pipe 1 is connected to the water distribution plate 21. The electric heating plate 8 is provided with a heating resistance wire inside, and the electric heating plate 8 is sandwiched on the front and rear outer walls of the chemical treatment tank 4. The lower end of the temperature controller 5 is connected to a branch pipe 6, and a wire is provided inside the branch pipe 6. The temperature controller 5 is connected to the electric heating plate 8 through the wire. The lower partition 42 is fixed to the inner bottom of the chemical treatment tank 4, and the upper partition 43 is fixed to the inner top of the chemical treatment tank 4. The lower partition 42 and the upper partition 43 are both smaller than the internal height of the chemical treatment tank 4 in the vertical direction. The water distribution pipe 41 passes through the upper partition 43 laterally, and the water distribution pipe 41 is located on the upper side of the lower partition 42. The lower end of the water distribution pipe 41 is connected to a spray head 412, and the spray head 412 is located on the upper side of the catalyst layer 44.

[0027] Specifically, the water distribution plate 21 is a rectangular hollow plate, and multiple nozzles are connected to its lower end.

[0028] Specifically, the quartz sand filter layer 22 has three layers, upper and lower, and a porous support plate at the bottom, with the filter holes of the support plate being smaller than the particle size of the quartz sand.

[0029] As a preferred embodiment, by setting a lower partition 42 and an upper partition 43, a tortuous flow path is formed inside the chemical treatment tank 4, and multiple catalyst layers 44 and spray heads 412 are provided in the path, thereby achieving a continuous chemical reaction effect on the wastewater.

[0030] In operation, the water distribution cap inside the physical treatment tank diffuses the wastewater entering through the wastewater inlet pipe, allowing it to fall extensively onto the quartz sand filter layer, thus accelerating filtration efficiency. The wastewater then flows through the connecting pipe into the chemical treatment tank. In this tank, the inverted flow channel formed by the upper and lower partitions allows the physically filtered wastewater to flow in an S-shape over the catalyst layer. Simultaneously, hydrogen peroxide is sprayed from the spray nozzles below the water distribution pipe, extending the contact time between the wastewater and the catalyst layer and hydrogen peroxide. This significantly improves the oxidation treatment effect without increasing the equipment volume. Multiple chemical treatment tanks, along with external electric heating plates, branch pipes, and temperature controllers, heat each tank. Based on the different substances contained in the wastewater, specific oxidation and catalytic reactions occur at appropriate temperatures within each tank, achieving targeted treatment of specific substances (heavy metals, etc.) and improving the degree of wastewater purification.

[0031] The segmented temperature-controlled hydrogen peroxide oxidation catalyst reaction device of this invention can effectively solve the problems mentioned in the background technology. It achieves segmented temperature-controlled treatment effect on the basis of existing segmented temperature-controlled hydrogen peroxide oxidation catalyst reaction device technology, thereby improving the degree and efficiency of wastewater treatment.

Claims

1. A segmented temperature-controlled hydrogen peroxide oxidation catalyst reaction device, comprising: The physical treatment box (2) and the chemical treatment box (4) are characterized in that: the upper end of the physical treatment box (2) is connected to a sewage inlet pipe (1), and the physical treatment box (2) and the chemical treatment box (4) are connected to each other through a connecting pipe (3). The chemical treatment box (4) is provided with an electric heating plate (8) on the outside, and a temperature controller (5) is connected to the upper side of the electric heating plate (8). The chemical treatment box (4) is provided with a lower partition (42) and an upper partition (43) inside, and a catalyst layer (44) is provided between the lower partition (42) and the upper partition (43). The chemical treatment box (4) is provided with a water distribution pipe (41) on the inside, and a water inlet pipe (411) is connected to the upper end of the water distribution pipe (411). A diversion pipe (7) is connected to the upper end of the water inlet pipe (411), and a hydrogen peroxide inlet pipe (9) is connected to the upper end of the diversion pipe (7). A flow valve (10) is installed in the pipe of the diversion pipe (7).

2. The segmented temperature-controlled hydrogen peroxide oxidation catalyst reaction device according to claim 1, characterized in that, The physical treatment box (2) has a water distribution plate (21) on the upper side inside, and a quartz sand filter layer (22) on the lower side of the water distribution plate (21). The quartz sand filter layer (22) has a flow guide bottom (23) on the lower side, and the lower end of the sewage inlet pipe (1) is connected to the water distribution plate (21).

3. The segmented temperature-controlled hydrogen peroxide oxidation catalyst reaction device according to claim 1, characterized in that, The electric heating plate (8) is equipped with a heating resistance wire inside, and the electric heating plate (8) is sandwiched between the front and rear outer walls of the chemical treatment box (4).

4. The segmented temperature-controlled hydrogen peroxide oxidation catalyst reaction device according to claim 1, characterized in that, The lower end of the thermostat (5) is connected to a branch pipe (6), and the branch pipe (6) is provided with a wire. The thermostat (5) is connected to the electric heating plate (8) through the wire.

5. The segmented temperature-controlled hydrogen peroxide oxidation catalyst reaction device according to claim 1, characterized in that, The lower partition (42) is fixed to the inner bottom of the chemical treatment box (4), and the upper partition (43) is fixed to the inner top of the chemical treatment box (4). Both the lower partition (42) and the upper partition (43) are smaller than the internal height of the chemical treatment box (4) in the vertical direction.

6. The segmented temperature-controlled hydrogen peroxide oxidation catalyst reaction device according to claim 1, characterized in that, The water distribution pipe (41) passes horizontally through the upper partition (43), and the water distribution pipe (41) is located on the upper side of the lower partition (42).

7. A segmented temperature-controlled hydrogen peroxide oxidation catalyst reaction device according to claim 1, characterized in that, The lower end of the water distribution pipe (41) is connected to a spray head (412), and the spray head (412) is located on the upper side of the catalyst layer (44).

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