Multi-element catalytic Fenton device for degradation-resistant COD (Chemical Oxygen Demand) wastewater

Abstract

The utility model belongs to the technical field of wastewater treatment, and particularly relates to a multi-element catalytic Fenton device for degradation-resistant COD (Chemical Oxygen Demand) wastewater. A shell is fixedly connected to the upper ends of the supporting rods distributed in a rectangular mode, a reaction chamber and a collecting chamber arranged below the reaction chamber are arranged in the shell, a cleaning assembly is arranged at the bottom of the shell and used for cleaning dirt in the collecting chamber, a water outlet is formed in the side wall of the upper end of the shell, and a water inlet and a drain outlet are formed in the side wall of the lower end of the shell. A feeding hole and a liquid inlet are formed in the side wall of the middle part of the shell. The cleaning assembly is fixedly installed in the collecting chamber at the bottom of the shell, the cleaning assembly can scrape sludge in the collecting chamber, the sludge can be discharged out of the shell, and the cleaning difficulty of operators is reduced. The side wall of the shell is fixedly connected with the air compressor communicated with the air distribution plate, and the air compressor can introduce air into the air distribution plate, so that bubbles are generated in the wastewater, the resistance during sludge descending is reduced, and the reaction rate of the wastewater and a catalyst is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of wastewater treatment, and in particular relates to a multi-catalytic Fenton device for difficult-to-degrade COD wastewater. Background Art

[0002] In some industrial production processes, the wastewater generated during the operation of the production line contains organic matter that is difficult to decompose, resulting in excessively high COD in the wastewater. This type of wastewater has poor biodegradability and biological methods cannot degrade its organic matter. Therefore, a Fenton device is required to treat this type of wastewater.

[0003] During use, the existing Fenton device consumes a lot of energy because a large amount of hydrogen peroxide and iron ions need to be added to the reactor. During the reaction, iron sludge and sediment are produced, which need to be processed and cleaned.

[0004] In view of this, in order to solve the above problems, the utility model designs a multi-catalytic Fenton device for difficult-to-degrade COD wastewater. Utility Model Content

[0005] Purpose of the utility model: The purpose of the utility model is to address the deficiencies in the current technology and provide a multi-catalytic Fenton device for difficult-to-degrade COD wastewater.

[0006] Technical solution: To achieve the above-mentioned purpose, the utility model provides a multi-catalytic Fenton device for difficult-to-degrade COD wastewater, including support rods distributed in a rectangular shape, the upper ends of the support rods are fixedly connected to a shell, the interior of the shell includes a reaction chamber and a collecting chamber arranged below the reaction chamber, a cleaning component is provided at the bottom of the shell, the cleaning component is used to clean the dirt inside the collecting chamber, the upper side wall of the shell is provided with a water outlet, the lower side wall is provided with a water inlet and a sewage outlet, and the middle side wall of the shell is provided with a feed inlet and a liquid inlet.

[0007] Furthermore, the cleaning component includes a motor fixedly connected to the bottom of the shell, the output end of the motor extends into the shell and is fixedly connected to a scraper that fits the reaction chamber, and the sewage outlet is fixedly connected to a pump.

[0008] Furthermore, the collecting chamber is conical.

[0009] Furthermore, two brackets are fixedly connected to the inner wall of the reaction chamber, a first cavity is opened inside the bracket, a first through hole connected to the first cavity is opened on the lower surface of the bracket, an inlet is opened at one end of the bracket, and the inlets on the two brackets are respectively connected to the liquid inlet and the feed inlet.

[0010] Furthermore, an air distribution plate located below the bracket is fixedly connected to the inner wall of the reaction chamber, a second cavity is defined inside the air distribution plate, a second through hole connected to the second cavity is defined on the upper surface of the air distribution plate, and an air compressor connected to the second cavity is fixedly connected to the outer wall of the shell.

[0011] Furthermore, the bracket and the air distribution plate are both cross-shaped.

[0012] Beneficial effect: By fixing the cleaning component inside the collection chamber at the bottom of the shell, the cleaning component can scrape the sludge inside the collection chamber and discharge the sludge outside the shell, reducing the cleaning difficulty for the operator.

[0013] By fixing an air compressor connected to the air distribution plate on the side wall of the shell, the air compressor can ventilate the inside of the air distribution plate, thereby generating bubbles inside the wastewater, reducing the resistance of the sludge when it descends, and increasing the reaction rate of the wastewater and the catalyst. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front cross-sectional view of the utility model;

[0015] Figure 2 This is a top view of the bracket of the utility model;

[0016] Figure 3 It is a top view of the air distribution plate of the utility model.

[0017] List of figure marks: support rod 1, shell 2, reaction chamber 201, collection chamber 202, water outlet 3, water inlet 4, sewage outlet 5, feed inlet 6, liquid inlet 7, motor 8, scraper 9, pump 10, bracket 11, air distribution plate 12, first cavity 13, second cavity 14, first through hole 15, second through hole 16, inlet 17, air compressor 18. DETAILED DESCRIPTION

[0018] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the accompanying drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0019] Embodiment 1, according to Figure 1-Figure 3 Provide further explanation.

[0020] The utility model provides a multi-catalytic Fenton device for difficult-to-degrade COD wastewater, comprising a support rod 1 distributed in a rectangular shape, wherein the upper end of the support rod 1 is fixedly connected to a shell 2, wherein the shell 2 comprises a reaction chamber 201 and a collection chamber 202 arranged below the reaction chamber 201, a cleaning component is arranged at the bottom of the shell 2, and the cleaning component is used to clean the dirt inside the collection chamber 202, a water outlet 3 is arranged on the upper end side wall of the shell 2, a water inlet 4 and a sewage outlet 5 are arranged on the lower end side wall, and a feed inlet 6 and a liquid inlet 7 are arranged on the middle side wall of the shell 2.

[0021] The cleaning assembly includes a motor 8 fixedly connected to the bottom of the shell 2 , the output end of the motor 8 extends into the shell 2 and is fixedly connected to a scraper 9 that fits the reaction chamber 201 , and a pump 10 is fixedly connected to the sewage outlet 5 .

[0022] Two brackets 11 are fixedly connected to the inner wall of the reaction chamber 201, a first cavity 13 is defined inside the bracket 11, a first through hole 15 communicating with the first cavity 13 is defined on the lower surface of the bracket 11, an inlet 17 is defined at one end of the bracket 11, and the inlets 17 on the two brackets 11 are communicated with the liquid inlet 7 and the feed inlet 6, respectively.

[0023] When it is necessary to treat the wastewater, the operator first injects the wastewater into the shell 2 through the water inlet 4 opened at the bottom of the side wall of the shell 2 and connected to the collection chamber 202. Then the liquid level of the wastewater gradually rises inside the shell 2. At the same time, during the process of the wastewater liquid level rising, the operator passes the hydrogen peroxide solution into the reaction chamber 201 through the liquid inlet 7 opened on the middle side wall of the shell 2. The hydrogen peroxide solution enters the first cavity 13 opened in the bracket 11 through the inlet 17 opened at one end of the bracket 11 and connected to the liquid inlet 7, and then is discharged from the first through hole 15 opened on the lower surface of the bracket 11 and connected to the first cavity 13. The discharged hydrogen peroxide solution Enter the wastewater to react with the wastewater. At the same time, a ferrous sulfate catalyst is introduced into the feed port 6 opened on the middle side wall of the shell 2. Using the same principle as above, the ferrous sulfate catalyst is discharged from the lower surface of another bracket 11. The ferrous sulfate catalyst enters the wastewater to react with the wastewater. The hydrogen peroxide solution and the ferrous sulfate catalyst are mixed in the wastewater. The hydrogen peroxide solution generates ·OH under the catalysis of Fe2+ in the ferrous sulfate catalyst. The ·OH degrades the organic matter in the wastewater. The sludge generated after the degradation moves downward to the inside of the collection chamber 202. As the wastewater liquid level gradually rises, the treated wastewater is discharged from the outlet 3 opened on the top side wall of the shell 2.

[0024] When the wastewater treatment is completed, sludge accumulates at the bottom of the collecting chamber 202. By starting the motor 8 fixedly connected to the bottom of the shell 2, the motor 8 drives the scraper 9 fixedly connected to the output end of the motor 8 to rotate. The scraper 9 fits the inner wall of the collecting chamber 202. Therefore, the sludge on the inner wall of the collecting chamber 202 can be scraped off during the rotation of the scraper 9. After the sludge is scraped off, the operator can start the pump 10 fixedly installed at the sewage outlet 5. The pump 10 extracts the sludge inside the collecting chamber 202 and discharges it to the outside of the shell 2 until all the sludge inside the collecting chamber 202 is discharged.

[0025] As a specific embodiment of the utility model, an air distribution plate 12 located below the bracket 11 is fixedly connected to the inner wall of the reaction chamber 201, a second cavity 14 is defined inside the air distribution plate 12, a second through hole 16 connected to the second cavity 14 is defined on the upper surface of the air distribution plate 12, and an air compressor 18 connected to the second cavity 14 is fixedly connected to the outer wall of the shell 2.

[0026] During the wastewater treatment process, the second cavity 14 opened inside the air distribution plate 12 is inflated by an air compressor 18 fixedly installed on the side wall of the shell 2, and the gas entering the second cavity 14 is discharged from the second through hole 16 opened on the upper surface of the air distribution plate 12 and connected to the second cavity 14. The bubbles generated can move upward along the wastewater. The generation of bubbles can reduce the resistance of the sludge when it descends, and can further accelerate the speed of the sludge descent, thereby improving the reaction efficiency of the wastewater with the hydrogen peroxide solution and the ferrous sulfate catalyst.

[0027] As a specific implementation of the present utility model, the bracket 11 and the air distribution plate 12 are both cross-shaped.

[0028] By arranging the support 11 and the gas distribution plate 12 into a cross shape, and uniformly opening the first through hole 15 and the second through hole 16 on the support 11 and the gas distribution plate 12 respectively, the hydrogen peroxide solution and the ferrous sulfate catalyst can be uniformly mixed with the wastewater to improve the reaction effect. In addition, the gas discharged from the second through hole 16 can also rise uniformly, thereby reducing the resistance of the sludge in various places, accelerating the sludge descent speed, and further improving the reaction effect.

[0029] As a specific implementation of the present invention, the collection chamber 202 is conical.

[0030] By configuring the collecting chamber 202 to be conical, the sludge can be accumulated at the bottom of the collecting chamber 202, thereby reducing the difficulty of cleaning the sludge.

[0031] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-catalytic Fenton device for refractory COD wastewater, characterized in that: It comprises support rods distributed in a rectangular shape, the upper ends of the support rods are fixedly connected to a shell, the interior of the shell comprises a reaction chamber and a collection chamber arranged below the reaction chamber, a cleaning assembly is arranged at the bottom of the shell, the cleaning assembly is used to clean the dirt inside the collection chamber, the upper side wall of the shell is provided with a water outlet, the lower side wall is provided with a water inlet and a sewage outlet, and the middle side wall of the shell is provided with a feed inlet and a liquid inlet; The cleaning component comprises a motor fixedly connected to the bottom of the shell, the output end of the motor extends into the shell and is fixedly connected to a scraper fitted with the reaction chamber, and a pump is fixedly connected to the sewage outlet.

2. A multi-catalytic Fenton device for refractory COD wastewater according to claim 1, characterized in that: The collecting chamber is conical.

3. A multi-catalytic Fenton device for refractory COD wastewater according to claim 1, characterized in that: Two brackets are fixedly connected to the inner wall of the reaction chamber, a first cavity is opened inside the bracket, a first through hole connected to the first cavity is opened on the lower surface of the bracket, an inlet is opened at one end of the bracket, and the inlets on the two brackets are respectively connected to the liquid inlet and the feed inlet.

4. A multi-catalytic Fenton device for refractory COD wastewater according to claim 3, characterized in that: An air distribution plate located below the bracket is fixedly connected to the inner wall of the reaction chamber, a second cavity is defined inside the air distribution plate, a second through hole connected to the second cavity is defined on the upper surface of the air distribution plate, and an air compressor connected to the second cavity is fixedly connected to the outer wall of the shell.

5. A multi-catalytic Fenton device for refractory COD wastewater according to claim 4, characterized in that: The bracket and the air distribution plate are both cross-shaped.

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