Physical treatment device and process for chemical high-nitrogen-content wastewater

Abstract

The invention relates to a chemical high-nitrogen-content wastewater physical treatment device and process, the chemical high-nitrogen-content wastewater physical treatment device comprises a frame base, the frame base is provided with a gas stripping tank, a high-temperature steam maker, a compression cooler and a denitrification tower, the top of the gas stripping tank is provided with a water inlet, the bottom of the gas stripping tank is provided with a water outlet, and two adsorption catalysis plates are rotatably mounted in the denitrification tower; a driving box is mounted at the top of the high-temperature steam manufacturing machine, and the two ends of the driving box are in butt joint with an air outlet of the high-temperature steam manufacturing machine and the air stripping tank through guide pipes. Sewage subjected to physical treatment and chemical adsorption catalysis is discharged through the water outlet, the nitride content of the sewage is greatly reduced, the emission standard or the reusable water quality requirement is met, and in the whole treatment process, efficient and energy-saving wastewater treatment is achieved through driving of the high-temperature steam turbine and rotation of the adsorption catalysis plate.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical wastewater treatment, and in particular to a physical treatment device and process for chemical wastewater with high nitrogen content. Background Art

[0002] Chemical high-nitrogen wastewater refers to wastewater containing high concentrations of nitrogen generated during chemical production. If this type of wastewater is discharged directly without proper treatment, it will cause serious pollution to the environment, including eutrophication of water bodies and death of aquatic organisms. Therefore, the development of efficient and environmentally friendly high-nitrogen wastewater treatment equipment is of great significance to protecting the ecological environment and achieving sustainable development of the chemical industry.

[0003] At present, the conventional treatment devices for chemical high-nitrogen wastewater have poor continuity and low efficiency, that is, the gas stripping equipment and denitrification equipment are mostly separated. At the same time, the contact area and contact time between the traditional fixed-installed catalytic plates and the flue gas are limited, which may lead to insufficient denitrification efficiency, and the flow path of the flue gas in the tower is relatively fixed, which may lead to the catalytic plates in some areas not being fully utilized. Therefore, it is particularly necessary to design a physical treatment device and process for chemical high-nitrogen wastewater to solve the above technical problems. Summary of the invention

[0004] The purpose of the present invention is to provide a physical treatment device and process for chemical high-nitrogen wastewater to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides a physical treatment device for chemical high-nitrogen wastewater, comprising: a frame, on which a gas stripping tank, a high-temperature steam making machine, a compression cooler and a denitrification tower are respectively installed, a water inlet is provided on the top of the gas stripping tank and a water outlet is installed on the bottom, two adsorption catalytic plates are rotatably installed inside the denitrification tower, a drive box is installed on the top of the high-temperature steam making machine, two ends of the drive box are connected to the high-temperature steam making machine outlet and the gas stripping tank through a conduit, the drive box is connected to the adsorption catalytic plate with a drive part, the compression cooler is connected to the denitrification tower and the gas stripping tank through a pipeline, the drive part includes two vertical plates fixed on the inner wall of the drive box, the vertical plates and the drive box are rotatably connected with a horizontal axis, a steam turbine is installed on the horizontal axis, the horizontal axis is connected to a pulley A transferred on one side of the drive box, the rotating shaft of the adsorption catalytic plate is connected to two pulleys B transferred on the outer wall of the denitrification tower, one pulley B is connected to the pulley A with a belt A, and the pulleys B are connected with a belt B.

[0006] The adsorption catalytic plate shaft is connected to a reinforcing stabilizing portion, which includes two gears A and a gear B rotatably connected to the side wall of the denitrification tower. The gear A is connected to the adsorption catalytic plate shaft and meshes with the gear B, and the gear B is designed to have a certain rotational resistance.

[0007] Preferably, the enhanced stabilization portion also includes a protection box installed on the side wall of the denitrification tower, and the gear A and a gear B are also rotatably connected to the inner side of the protection box, and a horizontal measuring plate is installed on one side of the protection box.

[0008] Preferably, the side wall of the protection box is provided with two horizontal and aligned marks, and the horizontal measuring plate is in a horizontal position when both sides are aligned with the two marks.

[0009] Preferably, a multifunctional sensor is installed on the top of the frame to monitor the steam pressure and temperature inside the gas lift tank.

[0010] Preferably, a drying and filtering part is provided inside the denitrification tower, comprising a cylinder fixed inside the denitrification tower, two filter plates are fixed inside the cylinder, and dry particles are filled between the filter plates.

[0011] Preferably, the steam pressure inside the stripping tank varies within a range of ±0.1 MPa, and the temperature range is ±1°C.

[0012] The present invention also provides a process for a physical treatment device for chemical high-nitrogen wastewater, comprising:

[0013] S1. Transportation and processing

[0014] Extraction steps

[0015] The high-temperature steam generated by the high-temperature steam generator enters the drive box through the conduit and is then guided to the air lift tank. In the air lift tank, the high-temperature steam contacts the sewage introduced from the water inlet, and uses the rising power and temperature effect of the steam to promote the volatilization and separation of nitrogen compounds in the sewage. This process not only improves the physical removal efficiency of nitrogen components in the sewage, but also enhances the fluidity of the sewage through the heating effect of the steam, which is beneficial to subsequent treatment.

[0016] S2. Protection treatment

[0017] The nitrogen after preliminary treatment in the air lift tank is sent to the compression cooler for cooling, and then enters the denitrification tower. At the same time, the high-temperature steam in the drive box drives the steam turbine to rotate. The steam turbine, as a power source, drives the pulley A to rotate through the horizontal axis. The pulley A is connected to the pulley B outside the denitrification tower through belt A. The pulley B can also rotate together through belt B, thereby driving the adsorption catalytic plate to rotate inside the denitrification tower. The adsorption catalytic plate is usually coated with specific adsorption materials and catalysts, which can efficiently adsorb and catalytically convert nitrogen compounds in sewage. As the adsorption catalytic plate rotates, the nitrogen compounds in the sewage are continuously adsorbed and converted.

[0018] S3. Emission treatment

[0019] Finally, the sewage after physical treatment and chemical adsorption catalysis is discharged through the outlet, and its nitrogen content is greatly reduced, reaching the emission standard or the water quality requirements for reuse. During the entire treatment process, efficient and energy-saving wastewater treatment is achieved through the drive of the high-temperature steam turbine and the rotation of the adsorption catalytic plate.

[0020] The beneficial effects of the present invention are:

[0021] 1. The sewage of the present invention, after the dual effects of physical treatment and chemical adsorption catalysis, is discharged through the outlet, and its nitride content is greatly reduced, reaching the discharge standard or the water quality requirement for reuse. During the whole treatment process, efficient and energy-saving wastewater treatment is achieved through the drive of the high-temperature steam turbine and the rotation of the adsorption catalytic plate.

[0022] 2. The present invention forms a stable transmission system by meshing the rotating shaft of the adsorption catalytic plate with gear A and gear B. The gear B is designed to have a certain rotation resistance, which helps to provide a certain damping when the adsorption catalytic plate rotates, preventing it from affecting the treatment effect due to too fast or too slow rotation. At the same time, this design can also effectively reduce the vibration and noise generated by rotation, and improve the stability and durability of the entire device.

[0023] 3. The multifunctional sensor of the present invention can monitor the steam pressure and temperature inside the gas lift tank in real time to ensure that they are always kept within the set range (the steam pressure variation range is ±0.1MPa, and the temperature range is ±1°C). It is very effective in improving the processing efficiency and ensuring the processing quality through precise control. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 The overall three-dimensional structure of a physical treatment device and process for chemical high nitrogen wastewater of the present invention Figure 1 ;

[0026] Figure 2 The overall three-dimensional structure of a physical treatment device and process for chemical high nitrogen wastewater of the present invention Figure 2 ;

[0027] Figure 3 It is a partial stereoscopic diagram of a physical treatment device and process for chemical high-nitrogen wastewater of the present invention;

[0028] Figure 4 This is a front view of the drying and filtering part of a physical treatment device and process for chemical high-nitrogen wastewater of the present invention;

[0029] Figure 5 A physical treatment device and process for chemical high nitrogen wastewater of the present invention Figure 3A in the enlarged view;

[0030] Figure 6 It is a stereoscopic diagram of the driving part of a physical treatment device and process for chemical high-nitrogen wastewater according to the present invention.

[0031] In the figure:

[0032] 1. Frame; 11. Air lift tank; 12. High-temperature steam generator; 13. Compression cooling machine; 14. Denitrification tower; 15. Water inlet; 16. Water outlet; 17. Adsorption catalyst plate; 18. Drive box; 19. Multi-function sensor; 2. Drive unit; 21. Vertical plate; 22. Steam turbine; 23. Horizontal axis; 24. Pulley A; 3. Drying and filtering unit; 31. Cylinder; 32. Filter plate; 33. Dry particles; 4. Strengthening and stabilizing unit; 41. Gear B; 42. Gear A; 43. Horizontal measuring plate; 44. Protective box. DETAILED DESCRIPTION

[0033] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0034] like Figure 1-Figure 6 As shown, a physical treatment device and process for chemical wastewater with high nitrogen content of the present invention comprises a frame 1, on which a gas stripping tank 11, a high-temperature steam generator 12, a compression cooling machine 13 and a denitrification tower 14 are respectively installed. A water inlet 15 is provided on the top of the gas stripping tank 11 and a water outlet 16 is installed on the bottom. Two adsorption catalytic plates 17 are rotatably installed inside the denitrification tower 14. A driving box 18 is installed on the top of the high-temperature steam generator 12. Both ends of the driving box 18 are connected to the gas outlet of the high-temperature steam generator 12 and the gas stripping tank 11 through a conduit. The driving box 18 is connected to the adsorption catalytic plate 17. The driving part 2, the compression cooling machine 13 are connected with the denitrification tower 14 and the gas stripping tank 11 through pipelines. The driving part 2 includes two vertical plates 21 fixed on the inner wall of the driving box 18. The vertical plates 21 and the driving box 18 are connected to a horizontal shaft 23 for rotating together. A steam turbine 22 is installed on the horizontal shaft 23. The horizontal shaft 23 is connected to a pulley A24 connected to one side of the driving box 18. The rotating shaft of the adsorption catalytic plate 17 is connected to two pulleys B26 connected to the outer wall of the denitrification tower 14. A belt A25 is connected to the pulley B26 and the pulley A24. A belt B27 is connected between the pulleys B26.

[0035] As described above, through the design of the gas lift tank 11, the high-temperature steam generator 12, the compression cooler 13, the denitrification tower 14 and the driving unit 2, the high-temperature steam generated by the high-temperature steam generator 12 enters the driving box 18 through the conduit and is then guided into the gas lift tank 11. In the air lift tank 11, high-temperature steam contacts the sewage introduced from the water inlet 15, and the rising power and temperature effect of the steam are used to promote the volatilization and separation of nitrogen compounds (such as ammonia nitrogen, nitrates, etc.) in the sewage. This process not only improves the physical removal efficiency of nitrogen components in the sewage, but also enhances the fluidity of the sewage through the heating effect of the steam, which is beneficial to subsequent treatment. The nitrogen after preliminary treatment in the air lift tank 11 is sent to the compression cooler 13 for cooling, and then enters the denitrification tower 14. At the same time, the high-temperature steam in the driving box 18 drives the steam turbine 22 to rotate. The steam turbine 22 serves as a power source and drives the pulley A24 to rotate through the horizontal shaft 23. The pulley A24 is connected to the pulley B26 outside the denitrification tower 14 through the belt A25. The pulley B26 can also rotate together through the belt B27, thereby driving the adsorption catalytic plate 17 to rotate inside the denitrification tower 14. This design realizes Effective utilization of energy converts the thermal energy of high-temperature steam into mechanical energy to drive the rotation of the adsorption catalytic plate 17 without the need for additional electric drive. The adsorption catalytic plate 17 is usually coated with specific adsorption materials and catalysts, which can efficiently adsorb and catalytically convert nitrogen compounds in sewage. As the adsorption catalytic plate 17 rotates, the nitrogen compounds in the sewage are continuously adsorbed and converted, further improving the denitrification efficiency. The overall continuity is relatively high. At the same time, the rotating adsorption catalytic plate 17 can also promote the flow of liquid in the denitrification tower 14, reduce dead zones, and improve the treatment effect. Finally, the sewage after the dual effects of physical treatment and chemical adsorption catalysis is discharged through the outlet 16, and its nitrogen compound content is greatly reduced, meeting the emission standards or reusable water quality requirements. During the entire treatment process, efficient and energy-saving wastewater treatment is achieved through the drive of the high-temperature steam turbine 22 and the rotation of the adsorption catalytic plate 17.

[0036] The rotation shaft of the adsorption catalytic plate 17 is connected to the enhanced stabilizing part 4, which includes two gears A42 and a gear B41 rotatably connected to the side wall of the denitrification tower 14. The gear A42 is connected to the rotation shaft of the adsorption catalytic plate 17 and meshes with the gear B41, and the gear B41 is designed to have a certain rotation resistance.

[0037] As mentioned above, the rotating shaft of the adsorption catalytic plate 17 meshes with the gear B41 through the gear A42 to form a stable transmission system. The gear B41 is designed to have a certain rotation resistance, which helps to provide a certain damping when the adsorption catalytic plate 17 rotates, preventing it from affecting the treatment effect due to too fast or too slow rotation. At the same time, this design can also effectively reduce the vibration and noise caused by rotation, and improve the stability and durability of the entire device.

[0038] The enhanced stabilization section 4 also includes a protective box 44 installed on the side wall of the denitrification tower 14. Gear A42 and a gear B41 are also rotatably connected to the inner side of the protective box 44. A horizontal measuring plate 43 is installed on one side of the protective box 44. Two horizontal and aligned marks are provided on the side wall of the protective box 44. When both sides of the horizontal measuring plate 43 are aligned with the two marks, they are in a horizontal position, and the adsorption catalytic plate 17 is also in a horizontal position.

[0039] As mentioned above, the protective box 44 provides additional protection for the gears to prevent the intrusion of foreign matter and moisture, and the leveling plate 43 levels the adsorption catalytic plate 17 after the work is completed.

[0040] A multifunctional sensor 19 is installed on the top of the frame 1 to monitor the steam pressure and temperature inside the air lift tank 11. The steam pressure inside the air lift tank 11 varies within a range of ±0.1 MPa, and the temperature range is ±1°C.

[0041] As mentioned above, the multifunctional sensor 19 can monitor the steam pressure and temperature inside the gas lift tank 11 in real time to ensure that they are always kept within the set range (the steam pressure variation range is ±0.1MPa, and the temperature range is ±1°C). Precise control is crucial to improving processing efficiency and ensuring processing quality.

[0042] A drying and filtering part 3 is provided inside the denitrification tower 14 , including a cylinder 31 fixed inside the denitrification tower 14 , two filter plates 32 are fixed inside the cylinder 31 , and dry particles 33 are filled between the filter plates 32 .

[0043] As mentioned above, the drying and filtering section 3 is located inside the denitrification tower 14. Through the combination of the cylinder 31, the filter plate 32 and the drying particles 33, the sewage treated by the adsorption catalytic plate 17 is further dried and filtered, which helps to remove the residual moisture and tiny particles in the sewage and improve the quality of the final discharged or reused water.

[0044] The present invention also provides a process for a physical treatment device for chemical high-nitrogen wastewater, comprising:

[0045] S1. Extraction steps

[0046] The high-temperature steam generated by the high-temperature steam generator 12 enters the drive box 18 through the conduit and is then guided to the air stripping tank 11. In the air stripping tank 11, the high-temperature steam contacts the sewage introduced from the water inlet 15, and utilizes the rising power and temperature effect of the steam to promote the volatilization and separation of nitrogen compounds such as ammonia nitrogen and nitrates in the sewage. This process not only improves the physical removal efficiency of nitrogen components in the sewage, but also enhances the fluidity of the sewage through the heating effect of the steam, which is beneficial to subsequent treatment.

[0047] S2. Protection treatment

[0048] The nitrogen after preliminary treatment in the air lift tank 11 is sent to the compression cooler 13 for cooling, and then enters the denitrification tower 14. At the same time, the high-temperature steam in the driving box 18 drives the steam turbine 22 to rotate. The steam turbine 22 serves as a power source and drives the pulley A24 to rotate through the horizontal axis 23. The pulley A24 is connected to the pulley B26 outside the denitrification tower 14 through the belt A25. The pulley B26 can also rotate together through the belt B27, thereby driving the adsorption catalytic plate 17 to rotate inside the denitrification tower 14. The rotation of the adsorption catalytic plate 17 is usually coated with specific adsorption materials and catalysts, which can efficiently adsorb and catalytically convert nitrogen compounds in sewage. As the adsorption catalytic plate 17 rotates, the nitrogen compounds in the sewage are continuously adsorbed and converted.

[0049] S3. Emission treatment

[0050] Finally, the sewage after the dual effects of physical treatment and chemical adsorption catalysis is discharged through the outlet 16, and its nitrogen content is greatly reduced, reaching the emission standard or the water quality requirements for reuse. During the entire treatment process, efficient and energy-saving wastewater treatment is achieved through the drive of the high-temperature steam turbine 22 and the rotation of the adsorption catalytic plate 17.

[0051] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A physical treatment device for chemical high nitrogen wastewater, characterized in that: include: A frame (1), wherein the frame (1) is respectively equipped with an air stripping tank (11), a high-temperature steam generator (12), a compression cooling machine (13) and a denitrification tower (14); the air stripping tank (11) is provided with a water inlet (15) at the top and a water outlet (16) at the bottom; two adsorption catalytic plates (17) are rotatably installed inside the denitrification tower (14); a driving box (18) is installed at the top of the high-temperature steam generator (12); both ends of the driving box (18) are connected to the air outlet of the high-temperature steam generator (12) and the air stripping tank (11) through a conduit; the driving box (18) and the adsorption catalytic plate (17) are connected to a driving unit (2); the compression cooling machine (13) is connected to the denitrification tower (14) and the air stripping tank (11) through a pipeline; The driving part (2) comprises two vertical plates (21) fixed to the inner wall of the driving box (18), the vertical plates (21) and the driving box (18) are connected to a horizontal shaft (23) for rotation together, a steam turbine (22) is installed on the horizontal shaft (23), the horizontal shaft (23) is connected to a pulley A (24) connected to one side of the driving box (18), the rotating shaft of the adsorption catalytic plate (17) is connected to two pulleys B (26) connected to the outer wall of the denitrification tower (14), one pulley B (26) is connected to the pulley A (24) by a belt A (25), and a belt B (27) is connected between the pulleys B (26).

2. A physical treatment device for chemical wastewater with high nitrogen content as claimed in claim 1, characterized in that: The rotation shaft of the adsorption catalytic plate (17) is connected to a strengthening stabilizing portion (4), and the strengthening stabilizing portion (4) comprises two gears A (42) and a gear B (41) which are rotatably connected to the side wall of the denitrification tower (14). The gear A (42) is connected to the rotation shaft of the adsorption catalytic plate (17) and meshes with the gear B (41), and the gear B (41) is designed to have a certain rotation resistance.

3. A physical treatment device for chemical wastewater with high nitrogen content as claimed in claim 2, characterized in that: The enhanced stabilization section (4) further comprises a protection box (44) installed on the side wall of the denitrification tower (14), the gear A (42) and a gear B (41) are also rotatably connected to the inner side of the protection box (44), and a horizontal measuring plate (43) is installed on one side of the protection box (44).

4. A physical treatment device for chemical wastewater with high nitrogen content as claimed in claim 3, characterized in that: The side wall of the protection box (44) is provided with two horizontal and aligned marks, and the horizontal measuring plate (43) is in a horizontal position when both sides are aligned with the two marks.

5. A physical treatment device for chemical wastewater with high nitrogen content as claimed in claim 1, characterized in that: A multifunctional sensor (19) is installed on the top of the frame (1) for monitoring the steam pressure and temperature inside the gas lift tank (11).

6. A physical treatment device for chemical wastewater with high nitrogen content as claimed in claim 1, characterized in that: The denitrification tower (14) is provided with a drying and filtering section (3) inside, comprising a cylinder (31) fixed inside the denitrification tower (14), two filter plates (32) fixed inside the cylinder (31), and dry particles (33) filled between the filter plates (32).

7. A physical treatment device for chemical wastewater with high nitrogen content as claimed in claim 5, characterized in that: The steam pressure inside the stripping tank (11) varies within a range of ±0.1 MPa, and the temperature ranges within a range of ±1°C.

8. A process for a physical treatment device for chemical wastewater with high nitrogen content as claimed in any one of claims 1 to 7, characterized in that: The method of use comprises the following steps: S1. Extraction steps The high-temperature steam generated by the high-temperature steam generator (12) enters the drive box (18) through the conduit and is then guided to the air stripping tank (11). In the air stripping tank (11), the high-temperature steam contacts the sewage introduced from the water inlet (15), and the rising power and temperature effect of the steam are used to promote the volatilization and separation of nitrogen compounds (such as ammonia nitrogen, nitrates, etc.) in the sewage. This process not only improves the physical removal efficiency of nitrogen components in the sewage, but also enhances the fluidity of the sewage through the heating effect of the steam, which is beneficial to subsequent treatment. S2. Protection treatment The nitrogen gas after preliminary treatment in the gas lift tank (11) is sent to the compression cooling machine (13) for cooling, and then enters the denitrification tower (14). At the same time, the high-temperature steam in the driving box (18) drives the steam turbine (22) to rotate. The steam turbine (22) serves as a power source and drives the pulley A (24) to rotate through the horizontal shaft (23). The pulley A (24) is connected to the pulley B (26) outside the denitrification tower (14) through the belt A (25). The pulley B (26) can also rotate together through the belt B (27), thereby driving the adsorption catalytic plate (17) to rotate inside the denitrification tower (14). The adsorption catalytic plate (17) is usually coated with a specific adsorption material and a catalyst, which can efficiently adsorb and catalytically convert nitrogen compounds in sewage. As the adsorption catalytic plate (17) rotates, the nitrogen compounds in the sewage are continuously adsorbed and converted. S3. Emission treatment Finally, the sewage after the dual effects of physical treatment and chemical adsorption catalysis is discharged through the outlet (16), and its nitrogen content is greatly reduced, reaching the discharge standard or the water quality requirements for reuse. During the entire treatment process, efficient and energy-saving wastewater treatment is achieved through the drive of the high-temperature steam turbine (22) and the rotation of the adsorption catalytic plate (17).

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