Device for improving recovery concentration of ammonium sulfate in membrane-method ammonia nitrogen removal system

Abstract

The utility model relates to the technical field of wastewater treatment equipment, in particular to a device for improving the recovery concentration of ammonium sulfate in a membrane-method ammonia nitrogen removal system. The stirring motor drives the stirring shaft to rotate, the stirring rods can be driven to rotate around the stirring shaft, a dilute sulphuric acid solution can be stirred through the multiple stirring rods on the outer wall of the bottom end of the stirring shaft, the fluidity of dilute sulphuric acid is improved, full contact of ammonia nitrogen and dilute sulphuric acid is facilitated, and then the reaction time of ammonia nitrogen and dilute sulphuric acid is shortened; by inserting the pull rods into the corresponding embedding grooves, the recycling frame can be conveniently limited, and by means of threaded connection of the sealing covers and the inner side walls of the threaded grooves, the sealing covers can be conveniently screwed, disassembled and assembled through the handles, and the pull rods can be conveniently and tightly fixed between the sealing covers and the embedding grooves; the recovery frame is taken out by pulling a pull rod, so that ammonium sulfate prepared by reaction can be conveniently and timely recovered through a filter screen at the bottom end of the recovery frame.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment equipment technology, specifically to a device for increasing the ammonium sulfate recovery concentration in a membrane-based ammonia nitrogen removal system. Background Technology

[0002] In water ecological governance activities, ammonia nitrogen treatment is one of the commonly used wastewater treatment methods. A hydrophobic PTFE hollow fiber microporous membrane is used to separate ammonia nitrogen-containing wastewater from acid absorption liquid. After the ammonia nitrogen in the wastewater dissociates into gaseous NH3, it can pass through the micropores on the PTFE membrane wall and come into contact with and react with the acid absorption liquid on the other side, thereby achieving efficient removal of ammonia nitrogen from the wastewater and meeting the discharge standards.

[0003] In existing technologies, when ammonia nitrogen stripped from waste liquid enters a sulfuric acid solution, it is absorbed by dilute sulfuric acid on the other side of the membrane to form ammonium sulfate. Timely recovery and utilization of ammonium sulfate is beneficial to improving the concentration of ammonium sulfate recovery and contributing to the development of environmental protection. However, due to the long reaction time between ammonia nitrogen and dilute sulfuric acid, the recovery speed of ammonium sulfate is slow and it is difficult to recover ammonium sulfate in a timely manner. Utility Model Content

[0004] The purpose of this invention is to provide a device for increasing the ammonium sulfate recovery concentration in a membrane-based ammonia nitrogen removal system, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for increasing the ammonium sulfate recovery concentration in a membrane nitrogen removal system, comprising: a treatment tank, a fixed base installed on the inner bottom wall of the treatment tank, a filter membrane connected to the top of the fixed base, a threaded groove opened on the top of the treatment tank near the fixed base, and a sealing cap threadedly connected to the inner wall of the threaded groove.

[0006] A stirring motor is installed at the top of the sealing cover. Handles are symmetrically arranged on both sides of the stirring motor. The rotating shaft of the stirring motor passes through the sealing cover and is fixedly connected to the stirring shaft. Several stirring rods are evenly installed on the outer wall of the bottom end of the stirring shaft.

[0007] The fixed base has a recycling frame inside, and a pull rod is installed at the top of the recycling frame. An embedding groove is opened on the inner bottom wall of the threaded groove near the pull rod.

[0008] Preferably, the top of the filter membrane is fixedly installed on the inner top wall of the treatment tank, and a guide block is fixedly connected to the bottom of the fixing seat. The top surface of the guide block is arc-shaped.

[0009] Preferably, a plug-in block is fixedly installed at the bottom end of the flow guide block, and the bottom end of the plug-in block is slidably inserted into the fixed seat.

[0010] Preferably, the sealing cover has a T-shaped longitudinal section and a sealing gasket is fixedly installed at the bottom end. The bottom outer wall of the sealing cover is provided with connecting threads, and the bottom end of the sealing cover is inserted into the threaded groove and tightly connected to the threaded groove through the threads.

[0011] Preferably, the stirring motor and the two handles are fixedly installed on the top of the sealing cover, and a liquid inlet pipe is provided on one side of the stirring motor. One end of the liquid inlet pipe passes through the sealing cover and is inserted into the processing tank.

[0012] Preferably, a filter screen is fixedly installed at the bottom of the recycling frame, and four pull rods are evenly distributed and fixedly installed at the top of the recycling frame, the four pull rods being roughly L-shaped.

[0013] Preferably, the bottom end of the threaded groove is connected to a connecting hole, and four embedding slots are correspondingly opened on the inner bottom wall of the threaded groove. The top ends of the four pull rods pass through the connecting hole and are inserted into the corresponding embedding slots.

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

[0015] This invention uses a stirring motor to drive a stirring shaft, which in turn drives stirring rods to rotate around the shaft. Several stirring rods on the outer wall of the bottom of the stirring shaft stir the dilute sulfuric acid solution, improving its fluidity and facilitating full contact between ammonia nitrogen and dilute sulfuric acid. This reduces the reaction time and allows for faster ammonium sulfate recovery. Inserting a pull rod into the corresponding embedding groove allows for easy positioning of the recovery frame. The threaded connection between the sealing cap and the inner side wall of the threaded groove facilitates both easy unscrewing and reassembly of the sealing cap using a handle and securely fixing the pull rod between the sealing cap and the embedding groove, improving the stability of the recovery frame. Pulling the pull rod removes the recovery frame, allowing for timely recovery of the ammonium sulfate produced in the reaction through the filter screen at the bottom of the frame. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a three-dimensional sectional view of the overall structure of this utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure at point B.

[0020] In the diagram: 1. Processing tank; 2. Filter membrane; 3. Fixing base; 4. Insert block; 5. Guide block; 6. Inlet pipe; 7. Sealing cap; 8. Connecting thread; 9. Sealing gasket; 10. Threaded groove; 11. Embedded groove; 12. Pull rod; 13. Filter screen; 14. Recovery frame; 15. Handle; 16. Stirring motor; 17. Stirring shaft; 18. Stirring rod; 19. Connecting hole. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Please see Figures 1 to 4 This utility model provides a technical solution: a device for increasing the ammonium sulfate recovery concentration in a membrane ammonia nitrogen removal system, comprising: a treatment tank 1, a fixing seat 3 installed on the inner bottom wall of the treatment tank 1, a filter membrane 2 connected to the top of the fixing seat 3, a threaded groove 10 formed near the top of the fixing seat 3 in the treatment tank 1, a sealing cap 7 threadedly connected to the inner wall of the threaded groove 10, the fixing seat 3 being an annular shape with a groove at the top, the fixing seat 3 being fixedly installed on the inner bottom wall of 1, facilitating the limiting of the filter membrane 2 and the recovery frame 14; the top of the filter membrane 2 being fixedly installed on the inner top wall of the treatment tank 1, a guide block 5 being fixedly connected to the bottom end of the fixing seat 3, the top surface of the guide block 5 being arc-shaped, and the filter membrane 2 being cylindrical, facilitating improved filtration and treatment of wastewater. A plug-in block 4 is fixedly installed at the bottom end of the guide block 5, the bottom end of the plug-in block 4 being slidably inserted into the fixing seat 3, facilitating the limiting and fixing of the filter membrane 2. The sealing cover 7 has a T-shaped longitudinal section and a sealing gasket 9 is fixedly installed at the bottom. The bottom outer wall of the sealing cover 7 is provided with a connecting thread 8. The bottom end of the sealing cover 7 is inserted into the threaded groove 10 and is tightly connected to the threaded groove 10 by the thread, which facilitates the disassembly and assembly of the sealing cover 7.

[0023] A stirring motor 16 is installed at the top of the sealing cover 7. Handles 15 are symmetrically arranged on both sides of the stirring motor 16. The rotating shaft of the stirring motor 16 passes through the sealing cover 7 and is fixedly connected to the stirring shaft 17. Several stirring rods 18 are evenly installed on the outer wall of the bottom end of the stirring shaft 17. The stirring motor 16 and the two handles 15 are fixedly installed at the top of the sealing cover 7. A liquid inlet pipe 6 is provided on one side of the stirring motor 16. One end of the liquid inlet pipe 6 passes through the sealing cover 7 and is inserted into the treatment tank 1 to facilitate the delivery of dilute sulfuric acid into the filter membrane 2 inside the treatment tank 1.

[0024] The mounting base 3 has a recycling frame 14 inside, with a pull rod 12 installed at the top of the recycling frame 14. An embedding groove 11 is formed on the inner bottom wall of the threaded groove 10 near the pull rod 12. A filter screen 13 is fixedly installed at the bottom of the recycling frame 14. Four pull rods 12 are evenly distributed and fixedly installed at the top of the recycling frame 14. The four pull rods 12 are roughly L-shaped, facilitating the removal of the recycling frame 14. A connecting hole 19 is connected to the bottom of the threaded groove 10. Four embedding grooves 11 are correspondingly formed on the inner bottom wall of the threaded groove 10. The tops of the four pull rods 12 pass through the connecting hole 19 and are inserted into the corresponding embedding grooves 11, facilitating the limiting of the pull rods 12 and fixing the bottom of the pull rods 12 between the sealing cover 7 and the embedding grooves 11.

[0025] When this device is in operation, wastewater is introduced into the treatment tank 1. The ammonia nitrogen in the wastewater enters the filter membrane 2 through the filter membrane 2. The stirring motor 16 drives the stirring shaft 17 to rotate, which in turn drives the stirring rods 18 to rotate around the stirring shaft 17. The several stirring rods 18 on the outer wall of the bottom end of the stirring shaft 17 can stir the dilute sulfuric acid solution, improve the fluidity of the dilute sulfuric acid, and facilitate the full contact between ammonia nitrogen and dilute sulfuric acid, thereby reducing the reaction time of ammonia nitrogen and dilute sulfuric acid and making the recovery speed of ammonium sulfate faster. By inserting the pull rod 12 into the corresponding embedding groove 11, the recovery frame 14 can be limited. The threaded connection between the sealing cover 7 and the inner side wall of the threaded groove 10 makes it easy to screw and disassemble the sealing cover 7 with the handle 15, and also makes it easy to fix the pull rod 12 tightly between the sealing cover 7 and the embedding groove 11, improving the stability of the recovery frame 14. By pulling the pull rod 12, the recovery frame 14 can be removed, and the ammonium sulfate produced by the reaction can be recovered in time through the filter screen 13 at the bottom of the recovery frame 14.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for increasing the ammonium sulfate recovery concentration in a membrane-based ammonia nitrogen removal system, comprising: The processing tank (1) is characterized in that: a fixed seat (3) is installed on the inner bottom wall of the processing tank (1), a filter membrane (2) is connected to the top of the fixed seat (3), and a threaded groove (10) is opened on the top of the processing tank (1) near the fixed seat (3), and a sealing cap (7) is threadedly connected to the inner wall of the threaded groove (10). The top of the sealing cover (7) is equipped with a stirring motor (16), and handles (15) are symmetrically arranged on both sides of the stirring motor (16). The rotating shaft of the stirring motor (16) passes through the sealing cover (7) and is fixedly connected to the stirring shaft (17). Several stirring rods (18) are evenly installed on the bottom outer wall of the stirring shaft (17). The fixed base (3) is provided with a recycling frame (14) inside. A pull rod (12) is installed at the top of the recycling frame (14). An embedding groove (11) is provided on the inner bottom wall of the threaded groove (10) near the pull rod (12).

2. The device for increasing the ammonium sulfate recovery concentration in a membrane-based ammonia nitrogen removal system according to claim 1, characterized in that: The top of the filter membrane (2) is fixedly installed on the inner top wall of the treatment tank (1), and the bottom of the fixing seat (3) is fixedly connected to the guide block (5), the top surface of the guide block (5) is an arc surface.

3. The device for increasing the ammonium sulfate recovery concentration in a membrane-based ammonia nitrogen removal system according to claim 2, characterized in that: The bottom end of the guide block (5) is fixedly installed with a plug-in block (4), and the bottom end of the plug-in block (4) is slidably inserted into the fixed seat (3).

4. The device for increasing the ammonium sulfate recovery concentration in a membrane-based ammonia nitrogen removal system according to claim 1, characterized in that: The sealing cover (7) has a T-shaped longitudinal section and a sealing gasket (9) is fixedly installed at the bottom. The bottom outer wall of the sealing cover (7) is provided with a connecting thread (8). The bottom end of the sealing cover (7) is inserted into the threaded groove (10) and is tightly connected to the threaded groove (10) by the thread.

5. The device for increasing the ammonium sulfate recovery concentration in a membrane-based ammonia nitrogen removal system according to claim 1, characterized in that: The stirring motor (16) and the two handles (15) are fixedly installed on the top of the sealing cover (7). A liquid inlet pipe (6) is provided on one side of the stirring motor (16). One end of the liquid inlet pipe (6) passes through the sealing cover (7) and is inserted into the processing tank (1).

6. The device for increasing the ammonium sulfate recovery concentration in a membrane-based ammonia nitrogen removal system according to claim 1, characterized in that: A filter screen (13) is fixedly installed at the bottom of the recycling frame (14), and four pull rods (12) are evenly distributed and fixedly installed at the top of the recycling frame (14). The four pull rods (12) are relatively inverted L-shaped.

7. The device for increasing the ammonium sulfate recovery concentration in a membrane-based ammonia nitrogen removal system according to claim 1, characterized in that: The bottom end of the threaded groove (10) is connected to a connecting hole (19). Four embedding slots (11) are correspondingly opened on the inner bottom wall of the threaded groove (10). The top ends of the four pull rods (12) pass through the connecting hole (19) and are inserted into the corresponding embedding slots (11).

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