Photocatalytic oxidation device for treating organic wastewater

Abstract

This utility model relates to the field of wastewater treatment technology, specifically to a photocatalytic oxidation device for treating organic wastewater. It includes a reaction tank, a stirring mechanism for agitating the organic wastewater, and a filtering mechanism for filtering precipitates. The stirring mechanism includes a motor, the output shaft of which drives an outer sleeve rod to rotate. A limiting groove is provided on the circumference of the outer sleeve rod, and a limiting block is slidably installed in the limiting groove. The limiting block is circumferentially mounted on a sliding rod, and a rotating rod is circumferentially mounted on the sliding rod. A stirring paddle is fixedly installed on the rotating rod. In this utility model, a lifting block rises, blocking precipitates through the filter screen. The edge of the lifting block scrapes off the precipitates. When the lifting block contacts the outer sleeve rod, the rotating rod scrapes the top of the lifting block, facilitating the removal of precipitates through the top of the upper fixing ring and the fixing groove. Simultaneously, the upper fixing ring and the lifting block block light, preventing precipitates from forming below the lifting block and improving the filtration effect of the device.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a photocatalytic oxidation device for treating organic wastewater. Background Technology

[0002] Photocatalytic oxidation technology for organic wastewater is a highly efficient advanced oxidation process (AOPs) that uses light energy to excite catalysts to generate active free radicals, thereby thoroughly degrading organic matter that is difficult to treat biologically (such as dyes, pesticides, drug residues, etc.).

[0003] Existing technologies, such as the device for photocatalytic treatment of organic dyeing and printing wastewater (patent publication number CN221500765U), belong to the field of wastewater treatment technology. This addresses the problem that in existing technologies, during photocatalytic wastewater treatment of organic dyeing and printing wastewater, some sediment is generated in the photocatalytic tank due to the mixing of the photocatalyst and the wastewater. Some of this sediment flows into a sedimentation tank along with the treated wastewater for further processing, while some sediment accumulates in the photocatalytic tank, requiring wastewater discharge for cleaning, which is relatively inconvenient. The proposed solution addresses this issue by using a tank body with two sets of screws connected by bearings. Sediment accumulates at the top of the filter screen. When cleaning the sediment, the screws drive the threaded sleeve and frame upwards, which in turn lifts the vertical rod and filter screen, removing the sediment from the tank. This eliminates the need to discharge the organic dyeing and printing wastewater from the tank, making cleaning relatively convenient.

[0004] In this technical solution, during the replacement of the filter screen, the organic wastewater continues to be photocatalytically oxidized, causing sediment to appear in the wastewater. This sediment is located below the replaced filter screen and is difficult to clean.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Utility Model Content

[0006] The purpose of this invention is to provide a photocatalytic oxidation device for treating organic wastewater that can effectively solve the above-mentioned technical problems.

[0007] To achieve the purpose of this utility model, the following technical solution is adopted: a photocatalytic oxidation device for treating organic wastewater, comprising: a reaction tank, a stirring mechanism for stirring organic wastewater, and a filtration mechanism for filtering precipitates;

[0008] The stirring mechanism includes: a motor, the output shaft of which drives an outer sleeve rod to rotate, a limiting groove is provided on the circumference of the outer sleeve rod, a limiting block is slidably installed in the limiting groove, the limiting block is circumferentially installed on a sliding rod, a rotating rod is circumferentially installed on the sliding rod, and a stirring paddle is fixedly installed on the rotating rod.

[0009] Furthermore, the filtration mechanism includes: a cylinder, a piston rod of the cylinder being fixedly connected to a lifting block, the lifting block being slidably installed in the filter cylinder, a lower fixing ring being fixedly installed at the lower end of the filter cylinder, the lower fixing ring having a through hole on its circumference, and an upper fixing ring being fixedly installed at the upper end of the filter cylinder.

[0010] Furthermore, the thickness of the lifting block is greater than the distance between the lower fixing ring and the bottom of the inner wall of the reaction vessel.

[0011] Furthermore, the lower end of the outer sleeve rod is at the same height as the top of the upper fixing ring.

[0012] Furthermore, the top of the reaction vessel is provided with a fixing groove.

[0013] Furthermore, the bottom of the fixing groove is at the same height as the top of the upper fixing ring.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a photocatalytic oxidation device for treating organic wastewater. The wastewater is stirred by a stirring mechanism, so that the organic matter in the wastewater is evenly irradiated by light, thereby improving the oxidation efficiency. The wastewater enters below the lifting block through the filter cylinder via a lifting block, where the filter screen blocks the sediment, and the edge of the lifting block scrapes off the sediment. When the lifting block contacts the outer rod, the rotating rod scrapes the top of the lifting block, making it easier to remove the sediment through the top of the upper fixing ring and the fixing groove. At the same time, the upper fixing ring and the lifting block block the light, preventing sediment from forming below the lifting block and improving the filtration effect of the device. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] Figure 1 This is a schematic diagram of the structure of a photocatalytic oxidation device for treating organic wastewater according to the present invention.

[0017] Figure 2 This is a cross-sectional structural schematic diagram of a photocatalytic oxidation device for treating organic wastewater according to the present invention.

[0018] In the diagram: 1. Reaction tank; 11. Fixing groove; 2. Mounting frame; 3. Lamp holder; 4. Stirring mechanism; 41. Motor; 42. Outer rod; 421. Limiting groove; 43. Sliding rod; 431. Limiting block; 44. Rotating rod; 45. Stirring paddle; 5. Filtering mechanism; 51. Cylinder; 52. Lifting block; 53. Filter cylinder; 54. Lower fixing ring; 55. Through hole; 56. Upper fixing ring. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0020] In the description of this utility model, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. When a mechanism is referred to as being "fixed to" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected" to another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism at the same time. When a mechanism is considered to be "set on" another mechanism, it can be directly set on the other mechanism or there may be an intervening mechanism at the same time. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0021] like Figures 1 to 2 As shown, this utility model discloses a photocatalytic oxidation device for treating organic wastewater, comprising: a reaction tank 1, a stirring mechanism 4 for stirring the organic wastewater, and a filtering mechanism 5 for filtering precipitates; the top of the reaction tank 1 is provided with a fixing groove 11, and a mounting frame 2 is fixedly installed on the top of the reaction tank 1. The position of the mounting frame 2 is offset from the position of the fixing groove 11. A ring-shaped lamp holder 3 is fixedly installed on the mounting frame 2, and multiple lighting lamps are evenly installed at the bottom of the lamp holder 3 to supplement the illumination, enabling the device to continue to work in a dimly lit environment. The stirring mechanism 4 rapidly mixes the catalyst with the organic matter in the wastewater, and ensures that the organic matter in the wastewater is evenly irradiated by light. The filtering mechanism 5 filters the precipitates produced by oxidation, preventing the precipitates from affecting photocatalysis.

[0022] The stirring mechanism 4 includes a motor 41, which is fixedly mounted on the top of the mounting bracket 2. A steering gear is mounted on the output shaft of the motor 41, and the steering gear is connected to the outer rod 42. The output shaft of the motor 41 drives the outer rod 42 to rotate. A limiting groove 421 is provided on the circumference of the outer rod 42, and a limiting block 431 is slidably installed in the limiting groove 421. The limiting block 431 is circumferentially mounted on the sliding rod 43, so that the sliding rod 43 is slidably installed in the outer rod 42. When the output shaft of the motor 41 drives the outer rod 42 to rotate, the outer rod 42 drives the limiting block 43 through the limiting groove 421. 1. When the sliding rod 43 rotates, the limiting block 431 drives the sliding rod 43 to rotate, and during the rotation of the sliding rod 43, the sliding rod 43 can move in the vertical direction; multiple rotating rods 44 are installed on the circumference of the sliding rod 43, and multiple vertical stirring paddles 45 are fixedly installed on the top of the rotating rods 44. When the sliding rod 43 drives the rotating rods 44 to rotate, the stirring paddles 45 make circular motion, and the stirring range is increased by the stirring paddles 45, which improves the stirring effect, so that the catalyst and organic wastewater are mixed evenly, and the water can be evenly irradiated by light, avoiding poor light irradiation effect on the water at the bottom of the pool.

[0023] Furthermore, the limiting groove 421 is aligned with the rotating rod 44 in the vertical direction, and the width of the limiting groove 421 is greater than the thickness of the rotating rod 44, so that when the sliding rod 43 drives the rotating rod 44 to rise, the rotating rod 44 can slide into the limiting groove 421, thus preventing the outer sleeve rod 42 from obstructing the rise of the rotating rod 44.

[0024] The filtration mechanism 5 includes: a cylinder 51, which is fixedly installed at the bottom of the reaction tank 1. The piston rod of the cylinder 51 slides and passes through a sealing ring, which is fixedly installed in a through hole 55 at the bottom of the reaction tank 1 to prevent organic wastewater from seeping out through the gap between the piston rod of the cylinder 51 and the inner wall of the through hole 55; a lifting block 52 is fixedly connected to the piston rod of the cylinder 51, which is slidably installed in the filter cylinder 53. The piston rod of the cylinder 51 pushes the lifting block 52 to move vertically. When the lifting block 52 rises, the organic wastewater above the lifting block 52 passes through the filter cylinder 53, which filters the sediment. The edge of the lifting block 52 can scrape off the sediment adhering to the inner wall of the filter cylinder 53, and the lifting block 52 can contact the rotating rod 44, which pushes the rotating rod 44 to rise. To prevent the rotating rod 44 from obstructing the movement of the lifting block 52, when the lifting block 52 contacts the outer sleeve rod 42, the rotating rod 44 can scrape the sediment on the lifting block 52, making it easy to remove the sediment; a lower fixing ring 54 is fixedly installed at the lower end of the filter cylinder 53, and a through hole 55 is provided on the circumference of the lower fixing ring 54. The lower fixing ring 54 is fixedly installed on the inner wall of the reaction tank 1, and the filtered organic wastewater can enter the lower part of the lifting block 52 through the through hole 55; an upper fixing ring 56 is fixedly installed at the upper end of the filter cylinder 53, and the upper fixing ring 56 is fixedly installed on the inner wall of the reaction tank 1. The filter cylinder 53 is supported and fixed by the upper fixing ring 56 and the lower fixing ring 54, and the top of the upper fixing ring 56 is at the same height as the bottom of the fixing groove 11, which makes it easy to remove the sediment from the top of the lifting block 52.

[0025] Furthermore, the lower end of the outer sleeve rod 42 is at the same height as the top of the upper fixing ring 56. When the outer sleeve rod 42 obstructs the rise of the lifting block 52, the top of the lifting block 52 and the top of the fixing ring are at the same horizontal plane. When cleaning the sediment on the lifting block 52, the sediment passes through the upper fixing ring 56 and the fixing groove 11 in sequence, making it easy to clean the sediment.

[0026] It should be added that the thickness of the lifting block 52 is greater than the distance between the lower fixing ring 54 and the bottom of the inner wall of the reaction tank 1, so that the lifting block 52 can block and seal the lower end of the reaction tank 1, preventing the organic wastewater inside and outside the reaction tank 1 from mixing, causing the sediment to mix into the outside of the reaction tank 1, which is not easy to clean.

[0027] Working principle:

[0028] Organic wastewater and catalyst are added to reaction tank 1. Motor 41 is started, causing its output shaft to rotate the outer sleeve rod 42. The outer sleeve rod 42 then rotates the sliding rod 43, which in turn rotates the rotating rod 44 and the stirring paddle 45. This ensures the catalyst and organic wastewater are evenly mixed and agitated, preventing the wastewater at the bottom of the reaction tank 1 from being blocked by insufficient light, which would otherwise lead to low oxidation efficiency. When there is a large amount of sediment, cylinder 51 is started, causing its piston rod to push the lifting block 52 upwards. The organic wastewater above the lifting block 52 passes through the filter cartridge 53. The sediment is filtered by the filter barrel. The edge of the lifting block 52 scrapes off the sediment adhering to the inner wall of the filter barrel 53. The lifting block 52 can contact the rotating rod 44. The lifting block 52 pushes the rotating rod 44 to rise, preventing the rotating rod 44 from obstructing the movement of the lifting block 52. When the lifting block 52 contacts the outer rod 42, the rotating rod 44 can scrape the sediment on the lifting block 52, making it easy to remove the sediment. In addition, the upper fixing ring 56 and the lifting block 52 can block light and reduce the sediment generated below the lifting block 52. The filter element does not need to be replaced frequently, which improves the practicality of the device.

[0029] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0030] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A photocatalytic oxidation device for treating organic wastewater, characterized in that, include: The reaction tank contains a stirring mechanism for agitating organic wastewater and a filtration mechanism for filtering sediment. The stirring mechanism includes: a motor, the output shaft of which drives an outer sleeve rod to rotate, a limiting groove is provided on the circumference of the outer sleeve rod, a limiting block is slidably installed in the limiting groove, the limiting block is circumferentially installed on a sliding rod, a rotating rod is circumferentially installed on the sliding rod, and a stirring paddle is fixedly installed on the rotating rod.

2. The photocatalytic oxidation device for treating organic wastewater as described in claim 1, characterized in that, The filtration mechanism includes: a cylinder, a lifting block fixedly connected to the piston rod of the cylinder, the lifting block being slidably installed in the filter cylinder, a lower fixing ring fixedly installed at the lower end of the filter cylinder, a through hole provided on the circumference of the lower fixing ring, and an upper fixing ring fixedly installed at the upper end of the filter cylinder.

3. The photocatalytic oxidation device for treating organic wastewater as described in claim 2, characterized in that, The thickness of the lifting block is greater than the distance between the lower fixing ring and the bottom of the inner wall of the reaction vessel.

4. The photocatalytic oxidation device for treating organic wastewater as described in claim 2, characterized in that, The lower end of the outer sleeve rod is at the same height as the top of the upper fixing ring.

5. The photocatalytic oxidation device for treating organic wastewater as described in claim 1, characterized in that, The top of the reaction vessel is provided with a fixing groove.

6. The photocatalytic oxidation device for treating organic wastewater as described in claim 5, characterized in that, The bottom of the fixing groove is at the same height as the top of the upper fixing ring.

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