A multi-enhanced mixed powdered activated carbon adsorption reactor

Abstract

This utility model relates to a multi-stage enhanced mixing powdered activated carbon adsorption reactor, belonging to the technical field of wastewater treatment equipment. It includes a tower reactor with an inlet pipe and an activated carbon feed pipe. The tower reactor contains a water distribution zone A, a mixing zone B, a guiding zone C, a sedimentation zone D, and a clarification zone E. The water distribution zone A is equipped with a swirling water distribution device connected to a conveying pipe, and the mixing zone B is equipped with a vortex stirring device. This utility model's tower reactor has sequentially connected water distribution zone A, mixing zone B, guiding zone C, sedimentation zone D, and clarification zone E. The increased contact time between activated carbon and water, the swirling water distribution in water distribution zone A, and the vortex stirring device in mixing zone B further homogenize the powdered carbon and pollutants, prolonging the contact time and thus improving the adsorption effect and increasing the removal rate of pollutants such as COD.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment equipment technology, specifically to a multi-enhanced mixed powdered activated carbon adsorption reactor. Background Technology

[0002] A powdered activated carbon (PAC) adsorption reactor is a device that utilizes the high specific surface area and strong adsorption capacity of powdered activated carbon to remove pollutants from water or gas. Traditional powdered activated carbon adsorption reactors have the following main problems: Uneven mixing: Activated carbon is prone to sedimentation or local aggregation, resulting in poor fluidization and low adsorption efficiency; Insufficient contact time: Static mixing or simple mechanical stirring is insufficient to prolong the effective reaction time. Utility Model Content

[0003] Therefore, it is necessary to provide a multi-enhanced mixed powdered activated carbon adsorption reactor to address the problems of existing technologies.

[0004] To solve the problems of the existing technology, the technical solution adopted by this utility model is as follows: A multi-stage enhanced mixing powdered activated carbon adsorption reactor includes a tower reactor with an inlet pipe and an activated carbon feed pipe installed on it. The inlet pipe and the activated carbon feed pipe are connected to a conveying pipe. The tower reactor has a water distribution zone, a mixing zone, a guiding zone, a sedimentation zone, and a clarification zone connected in sequence. The water distribution zone is equipped with a swirl water distribution device connected to the conveying pipe. The mixing zone is equipped with a vortex stirring device. The sedimentation zone is equipped with a sludge return pipe connected to the conveying pipe.

[0005] As a preferred option, a pipeline mixer is installed on the conveying pipe. The three materials—water inlet pipe, activated carbon feed pipe, and sludge return pipe—are initially mixed through the pipeline mixer located at the water inlet end of the reactor tower, thereby improving the mixing effect.

[0006] As a preferred embodiment, an inner cylinder is fixed at the bottom center of the tower reactor, and an outer cylinder is provided outside the inner cylinder. The top of the inner cylinder is lower than the top of the outer cylinder, and there is a gap between the bottom of the outer cylinder and the bottom of the tower reactor. The water distribution zone and the mixing zone are located at the top and bottom of the inner cylinder, respectively. The area between the outer and inner cylinders is a flow guiding zone, the area between the tower reactor below the outer cylinder and the inner cylinder is a sedimentation zone, and the area between the outer cylinder and the tower reactor is a clarification zone. This facilitates fluidized bed water flow.

[0007] As a preferred embodiment, the swirl water distribution device includes a conical water distribution hood disposed in the water distribution zone. Multiple water distribution pipes are arranged in a circular array around the central axis of the conical water distribution hood. The tops of the water distribution pipes pass through the conical water distribution hood and connect to a conveying pipe, while the bottoms of the water distribution pipes pass through the conical water distribution hood and connect to tangential water distribution heads. Materials entering the water distribution zone of the tower reactor undergo secondary swirl mixing through the four evenly distributed water distribution pipes and tangential water distribution heads arranged around the conical water distribution hood fixed to the bottom.

[0008] As a preferred embodiment, the vortex mixing device includes a mixing shaft disposed in the mixing zone, a mixing motor fixed at the top of the mixing shaft, and a double-layer mixing blade assembly on the mixing shaft to perform three-stage vortex mixing and increase the mixing effect.

[0009] As a preferred embodiment, each blade of the double-layer stirring blade assembly is provided with a water-permeable hole, and a stirring wing plate is fixed at the bottom of each blade of the double-layer stirring blade assembly. The setting of the water-permeable hole enhances local turbulence, prevents powder and carbon from settling, and improves the mixing uniformity.

[0010] As a preferred embodiment, the outer end of the tangential water distribution head is provided with a variable diameter contraction tube, and the outer end of the variable diameter contraction tube is provided with a water distribution tangent.

[0011] As a preferred embodiment, the bottom of the outer cylinder is provided with an outwardly bent inclined guide plate, which makes the sewage form a uniformly distributed slow flow state before entering the sedimentation zone. Combined with the effect of gravity, the mixed liquid can gradually settle and accumulate in the bottom sedimentation zone during the guiding process to improve the sedimentation rate.

[0012] As a preferred embodiment, an annular water collection trough is fixed on the upper inner wall of the tower reactor. A gap is provided between the inner wall of the water collection trough and the outer cylinder. The top of the water collection trough is located below the top of the tower reactor and the outer cylinder, which facilitates the collection of clear water in the clarification zone.

[0013] The advantages of this utility model compared with the prior art are: The tower reactor is equipped with a water distribution zone, a mixing zone, a flow guiding zone, a sedimentation zone, and a clarification zone connected in sequence, which increases the contact time between activated carbon and water. The water distribution zone is equipped with a swirl cloth connected to the conveying pipe. Then, in the mixing zone, the activated carbon is mixed by a vortex stirring device, which can further mix the powdered carbon and pollutants evenly and prolong the contact time, thereby improving the adsorption effect and increasing the removal rate of pollutants such as COD. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view schematic diagram of this utility model; Figure 3 This is a schematic diagram of the tangential water head structure. Figure 1 ; Figure 4 This is a schematic diagram of the tangential water head structure. Figure 2 ; Figure 5 This is a partial structural diagram of a double-layer stirring blade assembly; Figure 6 yes Figure 5 A schematic diagram of the top structure; The numbers on the map are: 1. Tower reactor; 2. Inlet pipe; 3. Activated carbon feed pipe; 4. Sludge return pipe; 5. Pipe mixer; 6. Conical water distribution hood; 7. Water distribution pipe; 8. Tangential water distribution head; 9. Double-layer stirring blade assembly; 10. Water permeable hole; 11. Tail-end inclined guide plate; 12. Water collection tank; 13. Stirring shaft; 14. Outer cylinder; 15. Inner cylinder; 16. Variable diameter contraction pipe; 17. Stirring blade; A. Water distribution zone; B. Mixing zone; C. Guide zone; D. Sedimentation zone; E. Clarification zone. Detailed Implementation

[0015] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0016] Example 1, Reference Figures 1 to 6 A multi-stage enhanced mixing powdered activated carbon adsorption reactor includes a tower reactor 1, on which an inlet pipe 2 and an activated carbon feed pipe 3 are installed. The inlet pipe 2 and the activated carbon feed pipe 3 are connected to a conveying pipe. The tower reactor 1 is provided with a water distribution zone A, a mixing zone B, a guiding zone C, a sedimentation zone D and a clarification zone E connected in sequence. The water distribution zone A is provided with a swirling water distribution device connected to the conveying pipe. The mixing zone B is provided with a vortex stirring device. The sedimentation zone D is provided with a sludge return pipe 4 connected to the conveying pipe.

[0017] During operation, wastewater and activated carbon raw materials enter the conveying pipe from the inlet pipe 2 and the activated carbon feed pipe 3, respectively. Then, they enter the water distribution zone A and are sprayed out from the vortex water distribution device to form a vortex for water distribution and mixing. Then, they enter the mixing zone B and are stirred and mixed by the vortex stirring device. Then, they enter the guiding zone C and enter the sedimentation zone D for sedimentation before entering the clarification zone E.

[0018] Example 2: Based on Example 1, a pipe mixer 5 is provided on the delivery pipe.

[0019] An inner cylinder 15 is fixed at the bottom center of the tower reactor 1. An outer cylinder 14 is provided outside the inner cylinder 15. The top of the inner cylinder 15 is lower than the top of the outer cylinder 14. There is a gap between the bottom of the outer cylinder 14 and the bottom of the tower reactor 1. The water distribution zone A and the mixing zone B are located at the top and bottom of the inner cylinder 15, respectively. The area between the outer cylinder 14 and the inner cylinder 15 is the flow guiding zone C. The area between the tower reactor 1 below the outer cylinder 14 and the inner cylinder 15 is the sedimentation zone D. The area between the outer cylinder 14 and the tower reactor 1 is the clarification zone E.

[0020] The vortex water distribution device includes a conical water distribution hood 6 installed in the water distribution area A. Multiple water distribution pipes 7 are arranged in a circular array around the central axis of the conical water distribution hood 6. The top of each water distribution pipe 7 passes through the conical water distribution hood 6 and connects to a conveying pipe, while the bottom of each water distribution pipe 7 passes through the conical water distribution hood 6 and connects to a tangential water distribution head 8. A sludge return pipe 4 can be connected to a sludge pump.

[0021] The vortex mixing device includes a mixing shaft 13 disposed in the mixing zone B, a mixing motor fixed to the top of the mixing shaft 13, and a double-layer mixing blade assembly 9 disposed on the mixing shaft 13.

[0022] Each blade of the double-layer stirring blade assembly 9 is provided with a water-permeable hole 10, and each blade of the double-layer stirring blade assembly 9 is fixed with a stirring wing plate 17 at the bottom.

[0023] The outer end of the tangential water distribution head 8 is provided with a variable diameter contraction tube 16, and the outer end of the variable diameter contraction tube 16 is provided with a water distribution tangential surface. The angle of the water distribution tangential surface is 45°.

[0024] The bottom of the outer cylinder 14 is provided with an outwardly bent tail end inclined guide plate 11.

[0025] An annular water collection trough 12 is fixed on the upper inner wall of the tower reactor 1. There is a gap between the inner wall of the water collection trough 12 and the outer cylinder 14. The top of the water collection trough 12 is located below the top of the tower reactor 1 and the outer cylinder 14. The more detailed working process of this reactor is as follows: The three materials, namely, water inlet pipe 2, activated carbon feed pipe 3, and sludge return pipe 4, are initially mixed through the pipe mixer 5 installed at the water inlet end of the tower reactor 1; then they enter the conveying pipe and then the water distribution zone A of the tower reactor 1. Through the four water distribution pipes 7 and the tangential water distribution heads 8, which are arranged in a circle around the conical water distribution hood 6 fixed at the bottom, water is evenly distributed and secondary vortex mixing is carried out; then the materials are diverted to both sides through the bottom conical water distribution hood 6 and enter the mixing zone B. Using the vortex generated by the vortex, the materials are then subjected to tertiary vortex mixing through the double-layer stirring blade assembly 9 installed on the stirring shaft 13 in the mixing zone B. At the same time, water permeable holes 10 are provided on the double-layer stirring blade assembly 9 to enhance local turbulence, prevent the powdered carbon from settling, and improve the mixing uniformity. After the three-stage mixing, the material passes through the guide zone C and is guided by the inclined guide plate 11 at the tail end. Combined with gravity, the mixture gradually settles and accumulates in the bottom sedimentation zone D during the guiding process. At the same time, the clear water rises in the clarification zone E to the water collection tank 12 and is collected and discharged.

[0026] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A multi-enhanced mixed powder activated carbon adsorption reactor, comprising a tower body reactor (1), a water inlet pipe (2) and an activated carbon feeding pipe (3) are installed on the tower body reactor (1), and the water inlet pipe (2) and the activated carbon feeding pipe (3) are connected with conveying pipes, characterized in that: The tower body reactor (1) is provided with water distribution area (A), mixing area (B), flow guide area (C), sedimentation area (D) and clarification area (E) which are communicated in sequence, the water distribution area (A) is provided with cyclone water distribution device connected with conveying pipe, the mixing area (B) is provided with vortex stirring device, the sedimentation area (D) is provided with sludge return pipe (4) connected with conveying pipe.

2. The multiple enhanced mixed powder activated carbon adsorption reactor according to claim 1, characterized in that, The conveying pipe is provided with pipeline mixer (5).

3. The multi-enhanced mixed powder activated carbon adsorption reactor according to claim 1 or 2, characterized in that, The inner cylinder (15) is fixed in the middle bottom of the tower body reactor (1), the outer cylinder (14) is arranged outside the inner cylinder (15), the top of the inner cylinder (15) is lower than the top of the outer cylinder (14), the bottom of the outer cylinder (14) is spaced apart from the bottom of the tower body reactor (1), the water distribution area (A) and the mixing area (B) are arranged at the upper and lower parts of the inner cylinder (15) respectively, the flow guide area (C) is arranged between the outer cylinder (14) and the inner cylinder (15), the sedimentation area (D) is arranged between the tower body reactor (1) below the outer cylinder (14) and the inner cylinder (15), and the clarification area (E) is arranged between the outer cylinder (14) and the tower body reactor (1).

4. The multiple enhanced mixed powder activated carbon adsorption reactor according to claim 1, characterized in that, The cyclone water distribution device comprises a conical water distribution cover (6) arranged in the water distribution area (A), a plurality of water distribution pipes (7) are arranged in a circular array around the central axis of the conical water distribution cover (6), the top of the water distribution pipe (7) is connected with the conveying pipe through the conical water distribution cover (6), and the bottom of the water distribution pipe (7) is connected with a tangential water distribution head (8) through the conical water distribution cover (6).

5. The multiple enhanced mixed powder activated carbon adsorption reactor according to claim 1, characterized in that, The vortex stirring device comprises a stirring shaft (13) arranged in the mixing area (B), a stirring motor is fixed to the top of the stirring shaft (13), and a double-layer stirring blade group (9) is arranged on the stirring shaft (13).

6. The multiple enhanced mixed powder activated carbon adsorption reactor according to claim 5, characterized in that, Each blade of the double-layer stirring blade group (9) is provided with a water permeable hole (10), and a stirring wing plate (17) is fixed to the bottom of each blade of the double-layer stirring blade group (9).

7. The multiple enhanced mixed powder activated carbon adsorption reactor according to claim 4, characterized in that, The outer end of the tangential water distribution head (8) is provided with a variable-diameter contraction pipe (16), and the outer end of the variable-diameter contraction pipe (16) is provided with a water distribution section.

8. The multiple enhanced mixed powder activated carbon adsorption reactor according to claim 3, characterized in that, The bottom of the outer cylinder (14) is provided with an outwardly bent tail end inclined flow guide plate (11).

9. The multiple enhanced mixed powder activated carbon adsorption reactor according to claim 3, characterized in that, An annular water collecting tank (12) is fixed to the inner wall of the upper part of the tower body reactor (1), a spacing is arranged between the inner side wall of the water collecting tank (12) and the outer cylinder (14), and the top of the water collecting tank (12) is below the top of the tower body reactor (1) and the outer cylinder (14).

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