Membrane deamination sewage treatment system

Abstract

The utility model relates to the technical field of sewage treatment, and discloses a membrane deamination sewage treatment system which comprises a deamination tank body, a water inlet pipe is installed at the position, close to the lower end, of the right side surface of the deamination tank body in a penetrating mode, a water outlet pipe is installed at the upper end of the deamination tank body, and a first supporting plate is installed in the deamination tank body. A second supporting plate is mounted at the position, below the first supporting plate, in the deamination tank body, and a cleaning mechanism is arranged at the position, below the second supporting plate, in the deamination tank body. According to the ammonia-containing wastewater treatment device, ammonia gas in ammonia-containing wastewater is separated through the hollow fiber membrane, and large-volume impurities in the ammonia-containing wastewater are filtered by the filter screen cylinder, so that the hollow fiber membrane is prevented from being blocked by the large-volume impurities; the cleaning mechanism is used for cleaning the surface of the filter screen cylinder through cleaning bristles in a mounting plate, so that large-volume impurities are prevented from being accumulated on the surface of the filter screen cylinder, and the service life of the filter screen cylinder is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment system with membrane deammoniation. Background Art

[0002] With the rapid development of industry and agriculture, the sources of ammonia nitrogen are becoming more and more extensive, and ammonia nitrogen pollution is becoming increasingly serious; ammonia nitrogen exists in many industrial wastewaters. Industries such as steel, oil refining, fertilizers, inorganic chemicals, ferroalloys, glass manufacturing, meat processing and feed production all discharge high-concentration ammonia nitrogen wastewater. Ammonia nitrogen wastewater discharged into water bodies can easily cause algae and other microorganisms to multiply in large numbers in the water, which will not only make the operation of tap water treatment plants difficult, but also cause a decrease in dissolved oxygen in the water and the death of a large number of fish in severe cases. When sewage is reused, ammonia nitrogen in recycled water can promote the reproduction of microorganisms in water pipelines and water-using equipment, forming bioscaling and clogging pipelines and water-using equipment;

[0003] At present, the treatment process of ammonia-containing wastewater will first be adjusted through sodium hydroxide to dissociate the ammonia in the wastewater into free ammonia, and then the PTFE hollow fiber membrane in the membrane deamination equipment will be used for deamination treatment; during the use of existing hollow fiber membranes, their degassing effect will be affected by the quality of the liquid. Once there are too many impurities in the liquid, the hollow fiber degassing membrane will be blocked, resulting in poor effect.

[0004] A Chinese patent discloses a hollow fiber degassing membrane assembly (authorization announcement number CN215352127U). This patented technology can filter the liquid entering the liquid chamber through a filter plate to remove internal impurities, thereby increasing the service life and degassing efficiency of the hollow fiber degassing membrane and improving the overall use effect of the device. It is simple to use and suitable for wide promotion; however, it has certain disadvantages: during use, the surface of the filter plate is easily accumulated and adhered with impurities, resulting in unsmooth discharge of wastewater, so the filter plate needs to be frequently maintained or replaced, shortening the service life of the filter plate. Utility Model Content

[0005] The utility model aims to provide a membrane deammoniation sewage treatment system to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A membrane deammonification sewage treatment system comprises a deammonification tank body, a vacuum mechanism is installed at the upper position of the front surface of the deammonification tank body, and a drain pipe is installed through the upper position of the left surface of the deammonification tank body, an inlet pipe is installed through the right surface of the deammonification tank body near the lower end, and a water outlet pipe is installed at the upper end of the deammonification tank body, a first support plate is installed inside the deammonification tank body, a hollow fiber membrane is installed on the upper surface of the first support plate, a support sleeve is installed on the upper end of the hollow fiber membrane, a second support plate is installed inside the deammonification tank body below the first support plate, a filter screen cylinder is installed between the first support plate and the second support plate, a cleaning mechanism is provided inside the deammonification tank body below the second support plate, the cleaning mechanism comprises a mounting plate and a driving mechanism for driving the mounting plate to rise and fall, a mounting hole is opened inside the mounting plate, and cleaning brushes are evenly installed on the inner surface of the mounting hole.

[0008] As a further solution of the utility model: the driving mechanism includes a support frame, a motor is installed on the lower surface of the support frame, a first synchronous wheel is installed on the upper end of the motor, a synchronous belt is installed on the outside of the first synchronous wheel, a threaded rod is rotatably connected to the upper surface of the support frame, a second synchronous wheel is installed on the outside of the threaded rod, and sliding rods are installed on the front and rear sides of the threaded rod.

[0009] As a further solution of the utility model: the vacuum mechanism is connected to the interior of the deammonia tank body, and the right end of the drain pipe is located above the first support plate.

[0010] As a further solution of the utility model: the upper end of the support sleeve is connected to the water outlet pipe, and the water inlet pipe is located between the first support plate and the second support plate.

[0011] As a further solution of the utility model: the mounting hole is located outside the filter screen cylinder, and the cleaning bristles are in contact with the outer surface of the filter screen cylinder.

[0012] As a further solution of the utility model: the lower end of the support frame is installed on the inner lower surface of the deammonia tank body, the threaded rod movably passes through the second support plate, and the threaded rod passes through the threaded connection to the mounting plate, the right end of the synchronous belt is installed on the outside of the second synchronous wheel, the sliding rod movably passes through the mounting plate, and the sliding rod is installed between the first support plate and the second support plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model uses a hollow fiber membrane to separate ammonia from ammonia-containing wastewater, and the filter cylinder filters large-volume impurities in the ammonia-containing wastewater to avoid clogging of the hollow fiber membrane by large-volume impurities, thereby reducing the use effect; the driving mechanism in the cleaning mechanism can drive the mounting plate to continuously rise and fall, so that the surface of the filter cylinder is cleaned by the cleaning bristles inside the mounting plate, to avoid large-volume impurities from accumulating on the surface of the filter cylinder, resulting in poor wastewater entry, thereby extending the service life of the filter cylinder, and there is no need to frequently maintain or replace the filter cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of a wastewater treatment system using membrane deammoniation;

[0016] Figure 2 A cross-sectional view of a wastewater treatment system using membrane deammoniation;

[0017] Figure 3 This is a schematic diagram of the structure of a cleaning mechanism in a wastewater treatment system using membrane deammoniation.

[0018] In the figure: 1. deammoniation tank body; 2. vacuum mechanism; 3. drain pipe; 4. water inlet pipe; 5. water outlet pipe; 6. first support plate; 7. hollow fiber membrane; 8. support sleeve; 9. second support plate; 10. filter cylinder; 11. cleaning mechanism; 12. mounting plate; 13. mounting hole; 14. cleaning brush; 15. driving mechanism; 16. support frame; 17. motor; 18. first synchronous wheel; 19. synchronous belt; 20. threaded rod; 21. second synchronous wheel; 22. sliding rod. DETAILED DESCRIPTION

[0019] See also Figure 1 and Figure 2 In an embodiment of the utility model, a membrane deammoniation sewage treatment system comprises a deammoniation tank body 1, a vacuum mechanism 2 is installed at the upper position of the front surface of the deammoniation tank body 1, the vacuum mechanism 2 is connected to the interior of the deammoniation tank body 1, a drainage pipe 3 is installed through the upper position of the left surface of the deammoniation tank body 1, a water inlet pipe 4 is installed through the right surface of the deammoniation tank body 1 near the lower end, and a water outlet pipe 5 is installed at the upper end of the deammoniation tank body 1, a first support plate 6 is installed inside the deammoniation tank body 1, the right end of the drainage pipe 3 is located above the first support plate 6, a hollow fiber membrane 7 is installed on the upper surface of the first support plate 6, a support sleeve 8 is installed on the upper end of the hollow fiber membrane 7, and the upper end of the support sleeve 8 is connected to the water outlet pipe 5, a second support plate 9 is installed inside the deammoniation tank body 1 below the first support plate 6, and the water inlet pipe 4 is located between the first support plate 6 and the second support plate 9;

[0020] The vacuum mechanism 2 includes a vacuum pump and a pump seat, which are used to pump the deammoniation tank body 1 to a certain negative pressure; the hollow fiber membrane 7 is hollow cylindrical, and there is a sulfuric acid solution between the hollow fiber membrane 7 and the deammoniation tank body 1 for absorbing ammonia gas. The liquid level of the sulfuric acid solution is slightly higher than the hollow fiber membrane 7. The right side surface of the deammoniation tank body 1 is located above the first support plate 6 and a pipe for discharging the sulfuric acid solution is installed at a position close to the first support plate 6. A pipe for discharging the sulfuric acid solution is installed at the upper end position of the right side surface of the deammoniation tank body 1; the support sleeve 8 is hollow cylindrical, and neither gas nor liquid can pass through its side wall; the water inlet pipe 4 is used to discharge ammonia-containing wastewater, which is pre-adjusted with sodium hydroxide to reach the optimal pH point, so that ammonia is dissociated into free ammonia; there is a through hole at the center of the first support plate 6, and the wastewater enters the hollow fiber membrane 7 through the through hole. Due to the existence of negative pressure, the free ammonia in the wastewater passes through the hollow fiber membrane 7 and is absorbed by the sulfuric acid solution, and the wastewater after ammonia removal is discharged through the outlet pipe 5.

[0021] exist Figure 2 Middle: A filter screen cartridge 10 is installed between the first support plate 6 and the second support plate 9;

[0022] The filter screen cartridge 10 is used to filter large-volume impurities in the liquid to prevent them from clogging the hollow fiber membrane 7 .

[0023] exist Figure 2 and Figure 3 Middle: A cleaning mechanism 11 is arranged inside the deammonia tank body 1 below the second support plate 9. The cleaning mechanism 11 includes a mounting plate 12 and a driving mechanism 15 for driving the mounting plate 12 to rise and fall. A mounting hole 13 is provided inside the mounting plate 12. The mounting hole 13 is located outside the filter screen cylinder 10. Cleaning bristles 14 are evenly installed on the inner surface of the mounting hole 13. The cleaning bristles 14 fit the outer surface of the filter screen cylinder 10. The driving mechanism 15 includes a support frame 16. The lower end of the support frame 16 is installed on the lower surface of the deammonia tank body 1. The lower surface of the support frame 16 is installed with a motor 1 7. A first synchronous wheel 18 is installed at the upper end of the motor 17, and a synchronous belt 19 is installed outside the first synchronous wheel 18. A threaded rod 20 is rotatably connected to the upper surface of the support frame 16. The threaded rod 20 movably penetrates the second support plate 9, and the threaded rod 20 penetrates and is threadedly connected to the mounting plate 12. A second synchronous wheel 21 is installed outside the threaded rod 20. The right end of the synchronous belt 19 is installed outside the second synchronous wheel 21. Slide rods 22 are installed on both the front and rear sides of the threaded rod 20. The slide rod 22 movably penetrates the mounting plate 12, and the slide rod 22 is installed between the first support plate 6 and the second support plate 9;

[0024] The motor 17 drives the threaded rod 20 to rotate through the synchronous belt 19, so that the mounting plate 12 is continuously raised and lowered, driving the cleaning brush 14 to clean the surface of the filter screen cylinder 10, thereby preventing large-volume impurities from accumulating on the surface of the filter screen cylinder 10, which would cause wastewater to enter unsmoothly, thereby extending the service life of the filter screen cylinder 10, and thus eliminating the need for frequent maintenance or replacement of the filter screen cylinder 10; a sealing mechanism is provided between the threaded rod 20 and the second support plate 9 to prevent wastewater from entering the lower area of ​​the second support plate 9 through the gap.

[0025] The working principle of the utility model is as follows: when in use, the staff discharges the pre-treated ammonia-containing wastewater into the interior of the deammoniation tank body 1 through the water inlet pipe 4, the wastewater first passes through the filter screen cylinder 10 for filtration to prevent large-volume impurities from clogging the hollow fiber membrane 7, then the wastewater enters the hollow fiber membrane 7 through the first support plate 6, under the action of the vacuum mechanism 2, the free ammonia in the wastewater passes through the hollow fiber membrane 7 and is absorbed by the sulfuric acid solution, and the wastewater after ammonia removal is discharged through the water outlet pipe 5; the motor 17 drives the synchronous belt 19 to rotate through the first synchronous wheel 18, thereby driving the threaded rod 20 to rotate through the second synchronous wheel 21, and the mounting plate 12 threadedly connected to the threaded rod 20 will move up and down, driving the cleaning brush 14 to clean the outer surface of the filter screen cylinder 10, avoiding the accumulation of a large amount of impurities on its surface, thereby extending the service life of the filter screen cylinder 10.

[0026] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A membrane deammoniation sewage treatment system, comprising a deammoniation tank body (1), a vacuum mechanism (2) is installed at the upper position of the front surface of the deammoniation tank body (1), and a drainage pipe (3) is installed through the upper position of the left surface of the deammoniation tank body (1), a water inlet pipe (4) is installed through the right surface of the deammoniation tank body (1) near the lower end, and a water outlet pipe (5) is installed at the upper end of the deammoniation tank body (1), a first support plate (6) is installed inside the deammoniation tank body (1), a hollow fiber membrane (7) is installed on the upper surface of the first support plate (6), and a support sleeve (8) is installed at the upper end of the hollow fiber membrane (7), a second support plate (9) is installed inside the deammoniation tank body (1) below the first support plate (6), and a filter screen cylinder (10) is installed between the first support plate (6) and the second support plate (9), characterized in that A cleaning mechanism (11) is arranged inside the deammonia tank body (1) below the second support plate (9), and the cleaning mechanism (11) comprises a mounting plate (12) and a driving mechanism (15) for driving the mounting plate (12) to rise and fall. A mounting hole (13) is provided inside the mounting plate (12), and cleaning bristles (14) are evenly installed on the inner surface of the mounting hole (13).

2. A membrane deammoniation sewage treatment system according to claim 1, characterized in that: The driving mechanism (15) comprises a support frame (16), a motor (17) is mounted on the lower surface of the support frame (16), a first synchronous wheel (18) is mounted on the upper end of the motor (17), a synchronous belt (19) is mounted on the outside of the first synchronous wheel (18), a threaded rod (20) is rotatably connected to the upper surface of the support frame (16), a second synchronous wheel (21) is mounted on the outside of the threaded rod (20), and sliding rods (22) are mounted on both the front and rear sides of the threaded rod (20).

3. A membrane deammoniation sewage treatment system according to claim 1, characterized in that: The vacuum mechanism (2) is connected to the interior of the deammoniation tank body (1), and the right end of the drain pipe (3) is located above the first support plate (6).

4. A wastewater treatment system with membrane deammoniation according to claim 1, characterized in that: The upper end of the support sleeve (8) is connected to the water outlet pipe (5), and the water inlet pipe (4) is located between the first support plate (6) and the second support plate (9).

5. A membrane deammoniation sewage treatment system according to claim 2, characterized in that: The mounting hole (13) is located outside the filter screen cylinder (10), and the cleaning bristles (14) are in contact with the outer surface of the filter screen cylinder (10).

6. A membrane deammoniation sewage treatment system according to claim 2, characterized in that: The lower end of the support frame (16) is mounted on the inner lower surface of the deammonia tank body (1); the threaded rod (20) movably passes through the second support plate (9), and the threaded rod (20) is threadedly connected to the mounting plate (12); the right end of the synchronous belt (19) is mounted on the outside of the second synchronous wheel (21); the sliding rod (22) movably passes through the mounting plate (12), and the sliding rod (22) is mounted between the first support plate (6) and the second support plate (9).

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