Activated carbon adsorption device for sewage treatment

Abstract

The utility model discloses a kind of activated carbon adsorption devices for sewage treatment, comprising: air stripping pump, carbon washer, water delivery pipe and water distributor. Air stripping pump includes air inlet pipe, air distribution pipe and lift pipe, the air distribution pipe is sleeved on the outside of the lift pipe, the air inlet pipe is connected with the air distribution pipe;Carbon washer includes backwash chamber and hole cover, the upper end of the lift pipe is located in the backwash chamber, the upper portion of the backwash chamber is equipped with carbon lifting port and exhaust port, lower portion is equipped with carbon discharge port and blowdown port, the hole cover is matched with the carbon lifting port;Water delivery pipe is sleeved on the outside of the air distribution pipe, water inlet pipe is connected on its outside;Water distributor is connected with the lower end of the water delivery pipe.One set of device completes activated carbon backwash and two kinds of operation of lifting, realizes activated carbon adsorption filter reuse function.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically an activated carbon adsorption device for wastewater treatment. Background Technology

[0002] With the rapid development of my country's economy, numerous industrial parks have sprung up around cities. Wastewater from these parks is typically a mixture of various industrial wastewaters, characterized by large volumes, complex compositions, and poor biodegradability. Coupled with stricter national wastewater treatment standards, most enterprises face the need for upgrading and transformation of their wastewater treatment processes, requiring deep treatment to meet discharge standards. The commonly used traditional deep wastewater treatment process—"chemical dosing-coagulation-sedimentation"—cannot meet the national "Class A standard" for most industrial wastewater. Furthermore, it requires large amounts of chemicals, resulting in high costs and the difficult disposal of large amounts of chemical sludge, causing secondary pollution. Ozone oxidation for deep wastewater treatment is also problematic due to high equipment and production costs, and its effectiveness is often unsatisfactory for many industrial wastewaters. Activated carbon adsorption is one of the tertiary wastewater treatment methods, capable of removing pollutants that are difficult to remove with general biological and physicochemical treatment units. However, activated carbon faces difficulties in regeneration after saturation, and the regeneration system for activated carbon is complex and expensive. Utility model patent CN209049067U discloses a continuous activated carbon filtration device, including a device shell, a water distribution system installed inside the device shell, and a filter media cleaning system. However, this filtration device is prone to clogging during backwashing of activated carbon and cannot remove saturated activated carbon. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the prior art by providing an activated carbon adsorption device capable of backwashing activated carbon and removing saturated activated carbon.

[0004] To solve the above technical problems, the technical solution adopted by this utility model is as follows:

[0005] An activated carbon adsorption device for wastewater treatment includes: an air-lift pump, a carbon washer, a water supply pipe, and a water distributor.

[0006] The air-lift pump includes an air inlet pipe, an air distribution pipe, and a lifting pipe. The air distribution pipe is sleeved on the outside of the lifting pipe, and the air inlet pipe is connected to the air distribution pipe. The carbon washer includes a backwash chamber and a cover. The upper end of the lifting pipe is located in the backwash chamber. The upper part of the backwash chamber is provided with a carbon lifting port and an exhaust port, and the lower part is provided with a carbon discharge port and a sludge discharge port. The cover is fitted with the carbon lifting port. The water supply pipe is sleeved on the outside of the air distribution pipe, and a water inlet pipe is connected to its outside. The water distributor is connected to the lower end of the water supply pipe.

[0007] Preferably, the upper end of the riser pipe is provided with a quick-connect coupling. The riser pipe can be quickly connected to and disconnected from external pipelines through the quick-connect coupling.

[0008] Preferably, the backwash chamber includes an upper end plate, a lower end plate, an outer cylinder, and an inner cylinder. The upper end plate and the lower end plate are fixedly connected to the upper and lower ends of the outer cylinder, respectively. The length of the inner cylinder is shorter than the length of the outer cylinder. The inner cylinder is fixedly connected to the upper end plate, and the carbon discharge port is located on the lower end plate. During backwashing, water flows out from the riser pipe and is blocked by the orifice cover, flowing downwards along the inner cylinder.

[0009] Preferably, the backwash chamber further includes a conical hopper and an inner drain pipe. The upper end of the conical hopper is sealed to the inner side of the outer cylinder, and the lower end is sealed to the lower end plate and corresponds to the carbon discharge port. The inner drain pipe is sealed to the conical surface of the conical hopper. An N-shaped fluid channel is formed inside the backwash chamber by the outer cylinder, inner cylinder, conical hopper, and inner drain pipe. Wastewater from backwashing the activated carbon is discharged outward through the inner drain pipe.

[0010] Preferably, the lower edge of the inner cylinder and the upper edge of the drain pipe are machined into a serrated shape. This separates water and activated carbon, preventing the activated carbon from escaping.

[0011] Preferably, the sewage outlet is located on the lower side of the outer cylinder. The conical hopper, lower end plate, and outer cylinder form a sewage chamber for collecting sewage. The sewage outlet communicates with the sewage chamber, and an external sewage pipe is connected to the outside of the sewage outlet. Sewage enters the sewage chamber through the inner sewage pipe and then flows out through the sewage outlet and the external sewage pipe.

[0012] Preferably, a carbon washing support is provided below the backwash chamber, the carbon washing support is fixedly connected to the lower end plate, and the inner side of the carbon washing support is provided with a through hole communicating with the cone body.

[0013] Preferably, an upper support is provided below the carbon washing support.

[0014] Preferably, a lower support is provided below the water distributor, and the inner side of the lower support is fixedly connected to the water distributor.

[0015] The beneficial effects of this invention are as follows: During backwashing, the riser pipe is disconnected from the external pipeline, and the activated carbon at the bottom of the adsorption tank is lifted to the carbon washer by an air-lift pump, falls into the backwash chamber, and finally falls to the top of the activated carbon bed; the wastewater generated during carbon washing is discharged through the drain outlet. During repeated lifting and lowering, the activated carbon collides and rubs against compressed air and water, successfully completing the backwashing process. During carbon lifting, the riser pipe outlet is connected to the external pipeline, and the activated carbon at the bottom of the adsorption tank is lifted out by the air-lift pump and transported to external dewatering equipment.

[0016] This invention utilizes a single device to perform both activated carbon backwashing and extraction, achieving the reuse of activated carbon adsorption and filtration. The operation is simple, reducing activated carbon wear and breakage, preventing caking during adsorption, lowering equipment investment, and saving energy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 yes Figure 1 A schematic diagram of the upper middle section;

[0019] Marking descriptions: 1-Air lifting pump, 11-Air inlet pipe, 12-Air distribution pipe, 13-Lifting pipe, 14-Quick connector, 2-Carbon washer, 21-Backwash chamber, 211-Upper end plate, 212-Lower end plate, 213-Outer cylinder, 214-Inner cylinder, 215-Conical bucket, 216-Inner drain pipe, 217-Sewage chamber, 218-Outer drain pipe, 22-Hole cover, 23-Carbon lifting port, 24-Exhaust port, 25-Carbon discharge port, 26-Sewage discharge port, 3-Water supply pipe, 4-Water inlet pipe, 5-Water distributor, 6-Carbon washer support, 7-Upper support, 8-Lower support. Detailed Implementation

[0020] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0021] like Figures 1 to 2 As shown, an activated carbon adsorption device for wastewater treatment includes: an air lift pump 1, a carbon washer 2, a water conveying pipe 3, and a water distributor 5.

[0022] The air lift pump 1 includes an air inlet pipe 11, an air distribution pipe 12, and a lift pipe 13. The air distribution pipe 12 is sleeved on the outside of the lift pipe 13. The air inlet pipe 11 is connected to an external compressed air cabinet or air compressor through the air distribution pipe 12. The upper end of the lift pipe 13 is provided with a quick-connect coupling 14. The lift pipe 13 is quickly connected and disconnected from external pipelines through the quick-connect coupling 14.

[0023] The carbon washer 2 includes a backwash chamber 21 and a cover 22. The upper end of the riser 13 is located inside the backwash chamber 21. The upper part of the backwash chamber 21 is provided with a carbon lifting port 23 and an exhaust port 24, and the lower part is provided with a carbon discharge port 25 and a sewage discharge port 26. The cover 22 is matched with the carbon lifting port 23.

[0024] The backwash chamber 21 includes an upper end plate 211, a lower end plate 212, an outer cylinder 213, and an inner cylinder 214. The upper end plate 211 and the lower end plate 212 are fixedly connected to the upper end and the lower end of the outer cylinder 213, respectively. The length of the inner cylinder 214 is less than the length of the outer cylinder 213. The inner cylinder 214 is fixedly connected to the upper end plate 211. The carbon discharge port 25 is located on the lower end plate 212.

[0025] The carbon lifting pipe outlet and quick-connect coupling are located inside the inner cylinder 214. During backwashing, the water flow from the lifting pipe 13 is blocked by the orifice cover 22 and flows downward along the inner cylinder 214.

[0026] The backwash chamber 21 also includes a conical bucket 215 and a drain pipe 216. The upper end of the conical bucket 215 is sealed to the inner side of the outer cylinder 213, and the lower end is sealed to the lower end plate 212. The drain pipe 216 is sealed to the conical surface of the conical bucket 215. The lower outlet of the conical bucket 215 corresponds to the carbon discharge port 25 on the lower end plate 212. A fluid channel is formed inside the backwash chamber 21 through the outer cylinder 213, inner cylinder 214, conical bucket 215, and drain pipe 216. Wastewater from backwashing the activated carbon is discharged outward through the drain pipe 216.

[0027] The lower edge of the inner cylinder 214 and the upper edge of the drain pipe 216 are machined into a sawtooth shape.

[0028] The sewage outlet 26 is located on the lower side of the outer cylinder 213. The conical bucket 215, the lower end plate 212, and the outer cylinder 213 form a sewage chamber 217 for collecting sewage. The sewage outlet 26 is connected to the sewage chamber 217, and an external sewage pipe 218 is connected to the outside of the sewage outlet. Sewage enters the sewage chamber 217 through the inner sewage pipe 216, and then flows out through the sewage outlet 26 and the external sewage pipe 218.

[0029] A carbon washing support 6 is provided below the backwash chamber 21. The carbon washing support 6 is fixedly connected to the lower end plate 212. The inner side of the carbon washing support 6 is provided with a through hole communicating with the cone-shaped hopper 215. An upper support 7 is provided below the carbon washing support 6.

[0030] The water supply pipe 3 is sleeved on the outside of the air distribution pipe 12, and the middle section of the water supply pipe 3 is connected to the water inlet pipe 4 on the outside; it is fixed below the carbon washing support 6 by a flange. The air lift pump 1 is placed in the center of the water supply pipe 3.

[0031] The water distributor 5 is connected to the lower end of the water supply pipe 3. A lower support 8 is provided below the water distributor 5, and the inner side of the lower support 8 is fixedly connected to the water distributor 5. The outer side of the lower support 8 is fixedly connected to the lower cone of the filter tank. The water distributor 5 includes a main water distribution pipe, multiple sets of branch water distribution pipes, and reinforcing ribs. The branch water distribution pipes are provided with multiple water outlets.

[0032] Using the water distributor 5, through multiple sets of water distribution branch pipes and multiple water outlets provided on the water distribution branch pipes, the water in the adsorption tank is evenly distributed, and all activated carbons evenly perform adsorption and filtration functions.

[0033] Figure 1 The area below the dashed line represents the activated carbon layer, and the horizontal solid line represents the liquid surface. This adsorption device utilizes an air lift pump; by adjusting the air pressure, it achieves backwashing and removal of the activated carbon.

[0034] The upper end of the riser pipe 13 and the quick-connect fitting 14 are located above the liquid surface. During backwashing, activated carbon, water, and compressed air are discharged from the upper end of the riser pipe 13. Most of the compressed air separates out, while the activated carbon and water fall below the liquid surface of the carbon washer 2. Due to the minimal air adhering to the activated carbon and the obstruction of the inner cylinder 214, the activated carbon falls to the top of the activated carbon bed under gravity, preventing it from flowing into the drain pipe and causing "carbon runoff". Most of the wastewater generated after backwashing flows into the drain pipe from the drain inner pipe 216 near the liquid surface.

[0035] During backwashing, the inlet pipe 4 is connected to the washing water, which enters the filter tank through the water supply pipe 3 and the water distributor 5. The lift pipe 13 is disconnected from the external pipeline and adjusted to low pressure through the compressed air cabinet. The activated carbon at the bottom of the adsorption tank is lifted to the carbon washer 2 by the air lift pump 1 and falls into the backwash chamber 21. It then falls to the top of the activated carbon bed through the through holes of the cone body 215, the carbon discharge port 25, and the carbon washer support 6. The wastewater generated during carbon washing is discharged through the drain port 26. During the repeated lifting and lowering process, the activated carbon collides and rubs with the compressed air and water, making the carbon washing process less prone to clogging and successfully completing the backwashing.

[0036] During carbon extraction, the quick-connect interface at the outlet of the lifting pipe 13 is connected to an external pipeline, and the compressed air in the air inlet pipe 11 is adjusted to high pressure through the compressed air cabinet. The activated carbon at the bottom of the adsorption tank is lifted out by the air lifting pump 1 and transported to the external dehydration equipment.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0038] In the description of this utility model, it should be understood that the terms "front", "rear", "left", "right", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and simplify 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. Therefore, they should not be construed as limiting the scope of protection of this utility model.

Claims

1. An activated carbon adsorption device for wastewater treatment, characterized in that, include: The air pump (1) includes an air inlet pipe (11), an air distribution pipe (12) and a lifting pipe (13). The air distribution pipe (12) is sleeved on the outside of the lifting pipe (13), and the air inlet pipe (11) is connected to the air distribution pipe (12). The carbon washer (2) includes a backwash chamber (21) and a cover (22). The upper end of the riser (13) is located in the backwash chamber (21). The upper part of the backwash chamber (21) is provided with a carbon lifting port (23) and an exhaust port (24), and the lower part is provided with a carbon discharge port (25) and a sewage discharge port (26). The cover (22) is matched with the carbon lifting port (23). A water supply pipe (3) is fitted over the outside of the air distribution pipe (12), and an inlet pipe (4) is connected to its outside; and The water distributor (5) is connected to the lower end of the water supply pipe (3).

2. The activated carbon adsorption device for wastewater treatment according to claim 1, characterized in that: The upper end of the riser tube (13) is provided with a quick connector (14).

3. The activated carbon adsorption device for wastewater treatment according to claim 1, characterized in that: The backwash chamber (21) includes an upper end plate (211), a lower end plate (212), an outer cylinder (213), and an inner cylinder (214). The upper end plate (211) and the lower end plate (212) are fixedly connected to the upper and lower ends of the outer cylinder (213), respectively. The length of the inner cylinder (214) is less than the length of the outer cylinder (213). The inner cylinder (214) is fixedly connected to the upper end plate (211). The carbon discharge port (25) is located on the lower end plate (212).

4. The activated carbon adsorption device for wastewater treatment according to claim 3, characterized in that: The backwash chamber (21) also includes a conical bucket (215) and a drain pipe (216). The upper end of the conical bucket (215) is sealed to the inner side of the outer cylinder (213), and the lower end is sealed to the lower end plate (212) and corresponds to the carbon discharge port (25). The drain pipe (216) is sealed to the conical surface of the conical bucket (215).

5. The activated carbon adsorption device for wastewater treatment according to claim 4, characterized in that: The lower edge of the inner cylinder (214) and the upper edge of the drain pipe (216) are machined into a sawtooth shape.

6. The activated carbon adsorption device for wastewater treatment according to claim 4, characterized in that: The drain outlet (26) is located on the lower side of the outer cylinder (213). The cone-shaped body (215), the lower end plate (212), and the outer cylinder (213) form a sewage chamber (217) for collecting sewage. The drain outlet (26) is connected to the sewage chamber (217). A drain pipe (218) is connected to the outside of the drain outlet (26).

7. The activated carbon adsorption device for wastewater treatment according to claim 4, characterized in that: The backwash chamber (21) is provided with a carbon washing support (6) below it. The carbon washing support (6) is fixedly connected to the lower end plate (212). The inner side of the carbon washing support (6) is provided with a through hole that communicates with the cone body (215).

8. The activated carbon adsorption device for wastewater treatment according to claim 7, characterized in that: The carbon washing support (6) is provided with an upper support (7) below it.

9. The activated carbon adsorption device for wastewater treatment according to claim 1, characterized in that: The water distributor (5) is provided with a lower support (8) below it, and the inner side of the lower support (8) is fixedly connected to the water distributor (5).

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