Carbon dioxide removal device in drinking water production

Abstract

The utility model relates to a kind of carbon dioxide removal devices in drinking water production, belong to drinking water production technical field.Water forms thin water film in the process of flowing through filler layer, greatly expands surface area, greatly increases the contact area of gas-liquid two phases, so that carbon dioxide can be quickly resolved from water, and is taken away by air;Clean air is uniformly supplied to the interstice of filler layer by air distribution device and countercurrent contact with water film flowing downward, and the solubility carbon dioxide in water is quickly resolved into air, and is discharged from the exhaust port at the top along with air flow;Water treated by decarbonization is collected at the bottom of tower, flows out through purified water outlet, and enters next process;All components contacted with water are made of food-grade material, to ensure that the quality of outlet water meets drinking water standards;Air supplied by air distribution device is filtered by air filter, to ensure the cleanliness of supplied air, avoid bringing impurities, ensure long-term stable operation of the device, and reduce maintenance frequency.

Description

Technical Field

[0001] This utility model belongs to the field of drinking water production technology, and specifically relates to a carbon dioxide removal device in drinking water production. Background Technology

[0002] In the production of drinking water, especially when groundwater or water treated by reverse osmosis (RO) is used as the raw water, the water often contains excessive dissolved carbon dioxide. Excessive carbon dioxide content leads to a low pH value, making the water acidic, which corrodes subsequent water transmission pipes and equipment, and affects the taste and stability of the water. Furthermore, the presence of carbon dioxide can interfere with the effectiveness of chemical dosing in subsequent disinfection or mineralization processes.

[0003] Currently, common carbon dioxide removal methods mainly include aeration, membrane degassing, and packed tower stripping. Aeration equipment is simple, but its removal efficiency is limited and it may introduce other pollutants from the air; membrane degassing is highly efficient, but the membrane modules are expensive, prone to fouling, and require regular replacement; traditional packed tower stripping, while highly efficient, suffers from problems such as bulky equipment and easy clogging of the packing. Summary of the Invention

[0004] In order to overcome the problems in the prior art, the present invention provides a carbon dioxide removal device for drinking water production.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A carbon dioxide removal device for drinking water production mainly includes a tower body 1, a packing layer 2, a water distribution device 3, and an air distribution device 4. The packing layer 2 is installed in the middle of the tower body 1, and the water distribution device 3 is installed at the top of the tower body 1. The water distribution device 3 is connected to the raw water supply equipment through a water supply pipe 30. The air distribution device 4 is installed inside the tower body 1, below the packing layer 2, and is connected to the workshop air supply equipment through an air filter. An exhaust pipe 11 is provided at the top of the tower body 1, and an induced draft fan is provided on the exhaust pipe 11. A purified water outlet 12 is provided at the bottom of the tower body 1.

[0006] Furthermore, the tower body 1 has two layers of perforated plates or grid plates in the middle, and the filler layer 2 is filled between the two layers of perforated plates or grid plates.

[0007] Furthermore, the filler in the filler layer 2 is one or more of Pall rings, Raschig rings, or multifaceted hollow spheres.

[0008] Furthermore, the water distribution device 3 consists of multiple coaxial annular water distribution pipes 31, with spray nozzles 32 evenly distributed at the bottom of the annular water distribution pipes 31.

[0009] Furthermore, the gas distribution device 4 includes an annular gas distribution pipe 41, a centrifugal fan 42, and a gas supply pipe 43. The annular gas distribution pipe 41 is installed inside the tower body 1, and air outlet holes are evenly provided on the annular gas distribution pipe 41. The centrifugal fan 42 is connected to the annular gas distribution pipe 41 through the gas supply pipe 43, and the centrifugal fan 42 is connected to the workshop gas supply main pipe 6.

[0010] Furthermore, the tower body 1 is provided with a manhole and / or observation window in the middle.

[0011] Furthermore, the bottom of the tower body 1 is provided with a water filtration device 13 for filtering purified water, and the bottom of the tower body 1 is provided with a sewage pipe 14 for cleaning.

[0012] The beneficial effects of this utility model are: This invention greatly increases the contact area between the gas and liquid phases through the packing layer and water distribution device, allowing carbon dioxide to be quickly desorbed from the water and carried away by the air, resulting in high carbon dioxide removal efficiency. All parts in contact with water are made of food-grade materials, ensuring that the effluent water quality meets drinking water standards. The air supplied by the air distribution device 4 is filtered through an air filter to ensure the cleanliness of the supplied air, avoid introducing impurities, ensure long-term stable operation of the device, and reduce maintenance frequency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the main axonometric projection of this utility model.

[0014] Figure 2 This is a rear axonometric three-dimensional schematic diagram of the present invention.

[0015] Figure 3 This is a three-dimensional cross-sectional view of the present invention.

[0016] Figure 4 This is a cross-sectional structural diagram of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0018] This utility model discloses a carbon dioxide removal device for drinking water production. The device mainly includes a tower body 1, a packing layer 2, a water distribution device 3, and an air distribution device 4. The packing layer 2 is installed in the middle of the tower body 1 to increase the contact area between water and air. The water distribution device 3 is installed at the top of the tower body 1 and is connected to the raw water supply equipment via a water supply pipe 30 to evenly spray the raw water to be treated. The air distribution device 4 is installed inside the tower body 1, below the packing layer 2, and is connected to the workshop air supply equipment via an air filter to introduce purging air into the tower body. An exhaust pipe 11 is provided at the top of the tower body 1, and an induced draft fan is installed on the exhaust pipe 11. A purified water outlet 12 is provided at the bottom of the tower body 1. The water distribution device 3 evenly sprays the raw water onto the packing layer 2 below, and the water flows through... During the process of packing layer 2, a thin water film is formed, which greatly expands the surface area and increases the contact area between the gas and liquid phases, allowing carbon dioxide to be quickly desorbed from the water and carried away by the air, resulting in high carbon dioxide removal efficiency. Clean air is uniformly supplied upward into the pores of packing layer 4 through the air distribution device 4, making countercurrent contact with the downward flowing water film. During this contact process, dissolved carbon dioxide in the water is rapidly desorbed into the air and discharged from the exhaust port 11 at the top with the airflow. The decarbonized water collects at the bottom of the tower and flows out through the purified water outlet 12 to enter the next process. All parts in contact with water are made of food-grade materials to ensure that the effluent water quality meets drinking water standards. The air supplied by the air distribution device 4 is filtered through an air filter to ensure the cleanliness of the supplied air, avoid the introduction of impurities, ensure long-term stable operation of the device, and reduce maintenance frequency.

[0019] The tower body 1 has two layers of perforated plates or grid plates in the middle, and the filler layer 2 is filled between the two layers of perforated plates or grid plates.

[0020] The filler in the filler layer 2 is one or more of Pall rings, Raschig rings, or multifaceted hollow spheres.

[0021] The water distribution device 3 consists of multiple coaxial annular water distribution pipes 31, with spray nozzles 32 evenly distributed at the bottom of the annular water distribution pipes 31 to ensure uniform water distribution.

[0022] The gas distribution device 4 includes an annular gas distribution pipe 41, a centrifugal fan 42, and a gas supply pipe 43. The annular gas distribution pipe 41 is installed inside the tower body 1. The annular gas distribution pipe 41 is evenly provided with air outlet holes. The centrifugal fan 42 is connected to the annular gas distribution pipe 41 through the gas supply pipe 43. The centrifugal fan 42 is connected to the workshop gas supply main pipe 6.

[0023] The tower body 1 is provided with a manhole and / or observation window in the middle.

[0024] The tower body 1 is equipped with a water filtration device 13 for filtration of purified water at the bottom, and a sewage pipe 14 for cleaning is provided at the bottom of the tower body 1. The decarbonized water is filtered by the water filtration device 13 and then flows out through the purified water outlet 12 to further ensure the quality of the effluent.

[0025] Work process: Raw water is evenly sprayed onto the packing layer 2 below by the water distribution device 3. As the water flows through the packing layer 2, it forms a thin water film, which greatly expands the surface area and increases the contact area between the gas and liquid phases. This allows carbon dioxide to be quickly desorbed from the water and carried away by the air, resulting in high carbon dioxide removal efficiency. Clean air is evenly supplied upwards into the pores of the packing layer 4 by the air distribution device 4, making countercurrent contact with the downward-flowing water film. During this contact process, dissolved carbon dioxide in the water is rapidly desorbed into the air and discharged from the exhaust port 11 at the top with the airflow. The decarbonized water collects at the bottom of the tower and flows out through the purified water outlet 12 to enter the next process. All parts in contact with water are made of food-grade materials to ensure that the effluent water quality meets drinking water standards. The air supplied by the air distribution device 4 is filtered through an air filter to ensure the cleanliness of the supplied air, avoid the introduction of impurities, ensure long-term stable operation of the device, and reduce maintenance frequency.

[0026] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A carbon dioxide removal device in the production of drinking water, characterized by: The carbon dioxide removal device in drinking water production includes a tower body (1), a packing layer (2), a water distribution device (3), and an air distribution device (4). The packing layer (2) is installed in the middle of the tower body (1), the water distribution device (3) is installed at the top of the tower body (1), and the water distribution device (3) is connected to the raw water supply equipment through a water supply pipe (30). The air distribution device (4) is installed in the tower body (1) and is located below the packing layer (2). The air distribution device (4) is connected to the workshop air supply equipment through an air filter. An exhaust pipe (11) is provided at the top of the tower body (1), and an induced draft fan is provided on the exhaust pipe (11). A purified water outlet (12) is provided at the bottom of the tower body (1).

2. A device for removing carbon dioxide in the production of drinking water as claimed in claim 1, characterized in that: The tower body (1) has two layers of perforated plates or grid plates in the middle, and the filler layer (2) is filled between the two layers of perforated plates or grid plates.

3. A device for removal of carbon dioxide in the production of drinking water according to claim 1 or 2, characterised in that: The filler in the filler layer (2) is one or more of Pall rings, Raschig rings, or multifaceted hollow spheres.

4. A device for removing carbon dioxide in the production of drinking water as claimed in claim 3, characterized in that: The water distribution device (3) consists of multiple coaxial annular water distribution pipes (31), and spray nozzles (32) are evenly provided at the bottom of the annular water distribution pipes (31).

5. A carbon dioxide removal device for drinking water production as described in any one of claims 1, 2, and 4, characterized in that: The gas distribution device (4) includes an annular gas distribution pipe (41), a centrifugal fan (42), and a gas supply pipe (43). The annular gas distribution pipe (41) is installed inside the tower body (1). The annular gas distribution pipe (41) is evenly provided with air outlet holes. The centrifugal fan (42) is connected to the annular gas distribution pipe (41) through the gas supply pipe (43). The centrifugal fan (42) is connected to the workshop gas supply main pipe (6).

6. A device for removing carbon dioxide in the production of drinking water as claimed in claim 5, characterized in that: The tower body (1) is provided with a manhole and / or observation window in the middle.

7. A device for removing carbon dioxide in the production of drinking water as claimed in any one of claims 1, 2, 4, 6, characterized in that: The tower body (1) is equipped with a water filtration device (13) for filtration of purified water at the bottom, and a sewage pipe (14) for cleaning is provided at the bottom of the tower body (1).

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