A VOCs wastewater treatment device

Abstract

This utility model discloses a VOCs wastewater treatment device, relating to the field of VOCs waste gas treatment technology. The VOCs wastewater treatment device includes a spray box, a reaction tank mounted on top of the spray box, and a water pump mounted at the front end of the top of the spray box. The water pump is connected to the reaction tank via a first outlet pipe, and second outlet pipes are mounted on both sides of the water pump. Fixing plates are mounted on both sides of the upper part of the spray box, arranged in an alternating pattern. An internal groove is provided inside each fixing plate, and the other end of the second outlet pipe is connected to the internal groove. Multiple sets of spray nozzles are evenly installed at the bottom of the fixing plates. A purification box is mounted on one side of the outside of the spray box, and an activated carbon adsorption plate is installed inside the purification box. This solution solves the problem that existing VOCs waste gas treatment devices cannot repeatedly recycle the treated liquid during use, easily leading to waste and low resource utilization.

Description

Technical Field

[0001] This utility model relates to the field of VOCs waste gas treatment technology, specifically a VOCs wastewater treatment device. Background Technology

[0002] In the process of wastewater treatment in industrial enterprises and sewage treatment in municipal industries, odorous gases containing a large amount of volatile organic compounds (VOCs) are generated. VOCs waste gases are extremely complex, and common ones include hydrocarbons, aldehydes, benzenes, chlorinated hydrocarbons, naphthalenes, diisocyanates, etc. They often have a foul odor and exhibit varying degrees of toxicity and irritation. Moreover, some compounds have genotoxicity, which has a significant impact on the surrounding flora, fauna, and human living environment.

[0003] As indicated by announcement number CN212467656U, a VOCs waste gas treatment spray tower is described. This device includes a connecting column fixedly connected to the inner surface of the spray tower shell, a spray tower body fixedly connected to one end of the connecting column, an air inlet pipe provided on the upper surface of the spray tower body, and a magnetizer body and a filter assembly arranged sequentially from top to bottom inside the spray tower body. A fixing column is fixedly installed on the lower surface of the spray tower shell, and an air outlet pipe is fixedly installed on the outer surface of the spray tower shell. A fixing seat is fixedly connected to the outer surface of the fixing column, and a fixing ring is fixedly connected to the lower surface of the fixing seat.

[0004] The aforementioned devices cannot recycle the treated liquid multiple times during use, which easily leads to waste and low resource utilization. Therefore, we propose a VOCs wastewater treatment device to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a VOCs wastewater treatment device to solve the problem mentioned in the background art that existing VOCs waste gas treatment devices cannot recycle the treated liquid multiple times during use, which easily leads to waste and low resource utilization.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a VOCs wastewater treatment device, comprising a spray box, a reaction tank installed on the top of the spray box, a water pump installed at the front end of the top of the spray box, the water pump being connected to the reaction tank via a first outlet pipe, second outlet pipes installed on both sides of the water pump, fixed plates installed on both sides of the upper part of the spray box, the fixed plates being staggered, and an internal groove provided inside the fixed plate, the other end of the second outlet pipe being connected to the internal groove, multiple sets of spray nozzles evenly installed on the bottom of the fixed plate, a purification box installed on one side of the outside of the spray box, an activated carbon adsorption plate installed inside the purification box, metal filter screens installed at the bottom and top of the activated carbon adsorption plate, an air pump installed at the bottom of the purification box, an air suction pipe installed on one side of the air pump, the other end of the air suction pipe being located above one side of the inside of the spray box, and an exhaust pipe installed at the top of the air pump penetrating the purification box.

[0007] Preferably, a gas collecting pipe is installed on the lower part of one side of the outer wall of the spray box, one side of the gas collecting pipe is connected to the spray box through an adsorption fan, and a gas collecting hood is installed on the other side of the gas collecting pipe.

[0008] Preferably, multiple sets of partitions are installed on both sides inside the spray box. The partitions are inclined downward and are staggered on the inner wall of the spray box. The partitions are located below the fixed plate.

[0009] Preferably, a first drive motor is installed on the top of the reaction vessel, a stirring rod is installed on the output shaft of the first drive motor, a plurality of stirring blades are installed on the outer wall of the stirring rod, and a liquid addition pipe is installed on one side of the top of the reaction vessel.

[0010] Preferably, a guide block is installed at the bottom of the spray box, and a treatment box is installed at the bottom outside the spray box. The treatment box is connected to the spray box through a third liquid outlet pipe, a valve is installed on the third liquid outlet pipe, and a filter plate is installed inside the treatment box.

[0011] Preferably, a circulation pump is installed at the bottom of the processing tank, a circulation pipe is installed on one side of the circulation pump, and the other end of the circulation pipe is connected to the upper part of the reaction vessel.

[0012] Preferably, reinforcing plates are installed on both sides of the metal filter screen away from the activated carbon adsorption plate. The reinforcing plates have an L-shaped cross-section and are bolted to the inner wall of the purification box. Multiple sets of reinforcing ribs are evenly installed on the reinforcing plates.

[0013] Preferably, a fixing frame is installed in the upper part of the purification box, a second drive motor is installed at the bottom of the fixing frame, and a fan blade is installed at the top of the fixing frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) This utility model uses a water pump to draw the spray liquid from the bottom of the reaction tank and transports it to the inside of the built-in tank through the first and second liquid outlet pipes. The spray liquid can be evenly sprayed onto the rising VOCs gas through the nozzle. The guide block facilitates the collection of the sprayed liquid into the treatment tank under gravity. The liquid is filtered by the filter plate. The circulation pump and circulation pipe ensure that the treated liquid can be circulated back to the reaction tank for further treatment or discharge. This solves the problem that the existing VOCs waste gas treatment device cannot recycle the treated liquid multiple times during use, which easily leads to waste and low resource utilization.

[0016] (2) Add acidic or alkaline solutions into the reaction tank through the liquid addition pipe. The solution can be fully stirred by the combined action of the first drive motor, stirring rod and stirring blades to prevent the spray liquid from failing and facilitate the recycling of the spray liquid.

[0017] (3) Through the porous structure of the activated carbon adsorption plate, it can effectively adsorb harmful substances and odors in the air. The installation of the reinforcement plate can effectively improve the installation stability of the metal filter screen, thereby improving the fixing effect of the activated carbon adsorption plate. It is easy to fix the loose activated carbon particles in the frame of the adsorption plate, avoiding the displacement, collapse or breakage of activated carbon due to airflow impact, which would affect the purification effect of the gas. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the rear cross-sectional structure of this utility model;

[0021] Figure 4 This is a front cross-sectional view of the present invention.

[0022] In the diagram: 1. Spray box; 2. Adsorption fan; 3. Gas collection pipe; 4. Gas collection hood; 5. Baffle plate; 6. Reaction tank; 7. First liquid outlet pipe; 8. Water pump; 9. Second liquid outlet pipe; 10. Fixing plate; 11. Internal tank; 12. Nozzle; 13. First drive motor; 14. Stirring rod; 15. Stirring blade; 16. Liquid addition pipe; 17. Guide block; 18. Third liquid outlet pipe; 19. Valve; 20. Treatment box; 21. Filter plate; 22. Circulation pump; 23. Circulation pipe; 24. Purification box; 25. Activated carbon adsorption plate; 26. Metal filter screen; 27. Air pump; 28. Suction pipe; 29. ​​Exhaust pipe; 30. Reinforcing plate; 31. Reinforcing rib; 32. Fixing frame; 33. Second drive motor; 34. Fan blade. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figure 1-4 One embodiment of this utility model is a VOCs wastewater treatment device, including a spray tank 1. Please refer to [link / reference]. Figure 3 A gas collecting pipe 3 is installed on the lower part of one side of the outer wall of the spray box 1. One side of the gas collecting pipe 3 is connected to the spray box 1 through an adsorption fan 2, and the other side of the gas collecting pipe 3 is equipped with a gas collecting hood 4. In use, the gas collecting hood 4 is installed above the sewage tank. The gas containing VOCs in the sewage is introduced into the gas collecting pipe 3 through the gas collecting hood 4. The gas flows in the gas collecting pipe 3 and is sent into the spray box 1 by the suction action of the adsorption fan 2. A reaction tank 6 is installed on the top of the spray box 1. A water pump 8 is installed at the front end of the top of the spray box 1. The water pump 8 is connected to the reaction tank 6 through a first liquid outlet pipe 7. Second liquid outlet pipes 9 are installed on both sides of the water pump 8. Fixing plates 10 are installed on both sides of the upper part of the spray box 1. The fixing plates 10 are arranged in an alternating manner. The interior of the fixing plates 10 is provided with an internal groove 11. The other end of the second liquid outlet pipe 9 is connected to the internal groove 11. Multiple sets of spray nozzles 12 are evenly installed at the bottom of the fixing plates 10. The water pump 8 is activated, drawing the spray liquid from the bottom of the reaction tank 6 and delivering it to the interior tank 11 through the first outlet pipe 7 and the second outlet pipe 9. The spray nozzle 12 evenly sprays the liquid onto the rising VOCs gas, increasing the contact area between the gas and the spray liquid and improving purification efficiency. The spray liquid reacts chemically with the VOCs gas, removing harmful components. The staggered installation of the fixing plates 10 alters the gas's upward path, increasing the spray stroke and improving the spray treatment effect. (See also...) Figure 2Multiple sets of baffles 5 are installed on both sides inside the spray box 1. The baffles 5 are inclined downwards and staggered on the inner wall of the spray box 1, located below the fixed plate 10. The design of the baffles 5 prevents the spray liquid from falling directly to the bottom of the spray box 1, and helps the gas to fully contact the spray liquid during its ascent, ensuring effective removal of VOCs. Please refer to [link to relevant documentation]. Figure 3 A guide block 17 is installed at the bottom of the spray box 1. A treatment box 20 is installed at the bottom outside the spray box 1. The treatment box 20 is connected to the spray box 1 through a third outlet pipe 18. A valve 19 is installed on the third outlet pipe 18. A filter plate 21 is installed inside the treatment box 20. Please refer to [link / reference]. Figure 3 A circulation pump 22 is installed at the bottom of the treatment tank 20. A circulation pipe 23 is installed on one side of the circulation pump 22, and the other end of the circulation pipe 23 is connected to the upper part of the reaction tank 6. The guide block 17 facilitates the collection of the sprayed liquid into the treatment tank 20 under gravity. The liquid is filtered by the filter plate 21, and the circulation pump 22 and circulation pipe 23 ensure that the treated liquid can be circulated back to the reaction tank 6 for further treatment or discharge. Please refer to [link / reference]. Figure 3 A first drive motor 13 is installed on the top of the reaction tank 6. A stirring rod 14 is installed on the output shaft of the first drive motor 13. Multiple sets of stirring blades 15 are installed on the outer wall of the stirring rod 14. A liquid addition pipe 16 is installed on one side of the top of the reaction tank 6. Acidic or alkaline solutions are added to the reaction tank 6 through the liquid addition pipe 16. The solution can be fully stirred by the combined action of the first drive motor 13, the stirring rod 14, and the stirring blades 15, preventing the spray liquid from becoming ineffective and facilitating the recycling of the spray liquid. A purification box 24 is installed on one side of the outside of the spray box 1. An activated carbon adsorption plate 25 is installed inside the purification box 24. Metal filter screens 26 are installed at the bottom and top of the activated carbon adsorption plate 25. An air pump 27 is installed at the bottom of the purification box 24. An air suction pipe 28 is installed on one side of the air pump 27. The other end of the air suction pipe 28 is located above the inside of the spray box 1. An exhaust pipe 29 is installed through the top of the air pump 27 and extends through the purification box 24. The air pump 27 is started, which draws the sprayed gas into the suction pipe 28 and discharges it into the purification box 24 through the exhaust pipe 29. The porous structure of the activated carbon adsorption plate 25 can effectively adsorb harmful substances and odors in the air. The metal filter 26 not only enhances the filtration effect of the gas, but also fixes the loose activated carbon particles in the adsorption plate frame, preventing the activated carbon from shifting, collapsing or breaking due to airflow impact, which would affect the purification effect of the gas.

[0025] Please see Figure 2Reinforcing plates 30 are installed on both sides of the metal filter screen 26 away from the activated carbon adsorption plate 25. The reinforcing plates 30 have an L-shaped cross-section and are bolted to the inner wall of the purification box 24. Multiple sets of reinforcing ribs 31 are evenly installed on the reinforcing plates 30. The fixed installation of the reinforcing plates 30 can effectively improve the installation stability of the metal filter screen 26, thereby improving the fixing effect of the activated carbon adsorption plate 25 and ensuring the purification effect of the gas. The bolted connection facilitates the periodic cleaning or replacement of the activated carbon adsorption plate 25 and the metal filter screen 26. The installation of the reinforcing ribs 31 can enhance the structural rigidity of the reinforcing plates 30 and prevent the reinforcing plates 30 from bending.

[0026] Please see Figure 4 A mounting bracket 32 ​​is installed in the upper part of the purification chamber 24. A second drive motor 33 is installed at the bottom of the mounting bracket 32, and a fan blade 34 is installed at the top of the mounting bracket 32. The second drive motor 33 drives the fan blade 34 to rotate, which can draw in the purified gas and discharge it through the exhaust port at the top.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A VOCs sewage treatment device comprising a spraying tank (1), characterized in that: A reaction tank (6) is installed on the top of the spray box (1). A water pump (8) is installed at the front end of the top of the spray box (1). The water pump (8) is connected to the reaction tank (6) through a first outlet pipe (7). Second outlet pipes (9) are installed on both sides of the water pump (8). Fixing plates (10) are installed on both sides of the upper part of the spray box (1). The fixing plates (10) are arranged alternately. An internal groove (11) is provided inside the fixing plate (10). The other end of the second outlet pipe (9) is connected to the internal groove (11). The bottom of the fixing plate (10) is evenly equipped with... The spray box (1) is equipped with multiple sets of nozzles (12). A purification box (24) is installed on one side of the outside of the spray box (1). An activated carbon adsorption plate (25) is installed inside the purification box (24). Metal filter screens (26) are installed at the bottom and top of the activated carbon adsorption plate (25). An air pump (27) is installed at the bottom of the purification box (24). An air suction pipe (28) is installed on one side of the air pump (27). The other end of the air suction pipe (28) is located above the inside of the spray box (1). An exhaust pipe (29) is installed through the purification box (24) at the top of the air pump (27).

2. The VOCs wastewater treatment device according to claim 1, characterized in that: A gas collecting pipe (3) is installed on the lower part of one side of the outer wall of the spray box (1). One side of the gas collecting pipe (3) is connected to the spray box (1) through an adsorption fan (2). A gas collecting hood (4) is installed on the other side of the gas collecting pipe (3).

3. The VOCs wastewater treatment device according to claim 1, characterized in that: Multiple sets of partitions (5) are installed on both sides inside the spray box (1). The partitions (5) are inclined downward and are installed alternately on the inner wall of the spray box (1). The partitions (5) are located below the fixed plate (10).

4. The VOCs wastewater treatment device according to claim 1, characterized in that: The top of the reaction vessel (6) is equipped with a first drive motor (13), and a stirring rod (14) is installed on the output shaft of the first drive motor (13). Multiple sets of stirring blades (15) are installed on the outer wall of the stirring rod (14), and a liquid addition pipe (16) is installed on one side of the top of the reaction vessel (6).

5. The VOCs wastewater treatment device according to claim 1, wherein: A guide block (17) is installed at the bottom of the spray box (1). A treatment box (20) is installed at the bottom outside the spray box (1). The treatment box (20) is connected to the spray box (1) through a third liquid outlet pipe (18). A valve (19) is installed on the third liquid outlet pipe (18). A filter plate (21) is installed inside the treatment box (20).

6. A VOCs wastewater treatment device according to claim 5, characterized in that: A circulation pump (22) is installed on the bottom of the processing tank (20), and a circulation pipe (23) is installed on one side of the circulation pump (22). The other end of the circulation pipe (23) is connected to the upper part of the reaction vessel (6).

7. A VOCs wastewater treatment device according to claim 1, characterized in that: The metal filter screen (26) is equipped with reinforcing plates (30) on both sides of the end away from the activated carbon adsorption plate (25). The reinforcing plates (30) have an L-shaped cross section and are bolted to the inner wall of the purification box (24). Multiple sets of reinforcing ribs (31) are evenly installed on the reinforcing plates (30).

8. A VOCs wastewater treatment device according to claim 1, characterized in that: A mounting bracket (32) is installed in the upper part of the purification box (24), a second drive motor (33) is installed at the bottom of the mounting bracket (32), and a fan blade (34) is installed at the top of the mounting bracket (32).

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