Pure terephthalic acid (PTA) wastewater heavy metal ion purification treatment device

Abstract

The utility model discloses a pure terephthalic acid (PTA) wastewater heavy metal ion purification treatment device, which relates to the technical field of wastewater treatment and comprises a purification mechanism, the purification mechanism comprises a treatment box, and two sides of the inner wall of the treatment box are respectively provided with two mounting grooves. Compressed air is fed into the aeration pipe through the air inlet pipe, a large number of tiny bubbles are generated when the air enters a water body through the aeration nozzle and are in contact with the water, so that the content of dissolved oxygen in the water is remarkably increased, and the water body is clearer and more transparent; under the action of direct current, the anode dissolves continuously to generate ferrous ions or aluminum ions, the metal ions have high reducibility, the generation speed of the metal ions can be increased by properly increasing the current intensity, so that reduction and removal of the heavy metal ions are accelerated, the removal purpose is achieved, and a reduction reaction can occur on the cathode to generate substances such as hydrogen and the like; the water quality of the wastewater can be improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a PTA wastewater heavy metal ion purification treatment device. Background Technology

[0002] PTA wastewater, also known as dimethyl paraphthalate (PTA) wastewater, is generated during the production of PTA. This wastewater mainly comes from the chemical fiber industry, especially from factories that produce polyester fibers. During the production process, PTA is used as a raw material to synthesize polyester, which generates a large amount of wastewater.

[0003] However, existing wastewater filtration and purification systems primarily rely on various filter media to remove impurities from the water, thereby purifying the water. However, this method lacks effective aeration, meaning that the dissolved oxygen content in the water cannot be sufficiently increased during the treatment process, thus affecting the efficiency of microbial decomposition of organic pollutants. Furthermore, during initial filtration, some impurities and sludge may settle inside the filter chamber, potentially causing inconvenience during subsequent cleaning. Therefore, we provide a PTA wastewater heavy metal ion purification treatment device. Utility Model Content

[0004] The purpose of this invention is to provide a PTA wastewater heavy metal ion purification and treatment device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a PTA wastewater heavy metal ion purification treatment device, comprising: a purification mechanism, the purification mechanism including a treatment box, two mounting slots on both sides of the inner wall of the treatment box, two mounting frames inside the treatment box, filter screens inside the two mounting frames, a mounting frame on the bottom side inside the treatment box, an aeration pipe on the top of the mounting frame, multiple aeration nozzles on the top of the aeration pipe, an air inlet pipe on one side of the aeration pipe, a fixing frame on the top side of the treatment box near the mounting frame, a cathode plate and an anode plate on the bottom of the fixing frame, and a cleaning mechanism on the side of the treatment box away from the aeration pipe.

[0006] As a further preferred embodiment of this technical solution, the cleaning mechanism includes a support frame, the bottom of which is fixedly connected to the top of the treatment tank away from the aeration pipe, and a cylinder is fixedly connected to the top of the support frame, with the output end of the cylinder bottom fixedly connected to the top of the piston rod.

[0007] As a further preferred embodiment of this technical solution, the bottom end of the piston rod is fixedly connected to the top of the connecting plate, and connecting rods are fixedly connected to both sides of the bottom of the connecting plate, with the bottom of the connecting rods fixedly connected to the top of the cleaning bucket.

[0008] As a further preferred embodiment of this technical solution, a filter screen is fixedly connected inside the mounting frame, the outside of the mounting frame is slidably connected to the inner wall of the mounting groove, and the bottom of the mounting bracket is fixedly connected to the bottom side of the inside of the processing box.

[0009] As a further preferred embodiment of this technical solution, an aeration pipe is fixedly installed on the top of the mounting bracket, and an aeration nozzle is fixedly installed in each of the multiple slots opened on the top of the aeration pipe.

[0010] As a further preferred embodiment of this technical solution, one end of the air inlet pipe is fixedly connected to one side of the aeration pipe, and a fixing bracket is fixedly connected to the top of the treatment box near the mounting bracket.

[0011] As a further preferred embodiment of this technical solution, the bottom of the fixing frame is electrically connected to a cathode plate and an anode plate respectively, a slot is provided in one side of the treatment box to provide a water outlet, and a water inlet is provided on the side of the treatment box near the support.

[0012] This utility model provides a device for purifying and treating heavy metal ions in PTA wastewater, which has the following beneficial effects:

[0013] (1) This utility model sends compressed air into the aeration pipe through the air inlet pipe. When the air enters the water body through the aeration nozzle, it will generate a large number of tiny bubbles and come into contact with the water, which will significantly increase the dissolved oxygen content in the water, improve the smell and color of the water, and make the water clearer and more transparent. Through the cathode plate and anode plate, with iron plate or aluminum plate as anode, under the action of direct current, the anode continuously dissolves to generate ferrous ions or aluminum ions. These metal ions have strong reducing properties. Appropriately increasing the current intensity can increase the generation rate of metal ions, thereby accelerating the reduction and removal of heavy metal ions. The purpose of removal is to produce hydrogen gas and other substances on the cathode through a reduction reaction, which helps to improve the water quality of wastewater.

[0014] (2) This utility model uses a starting cylinder to drive the piston rod to rise and fall. When the piston rod rises, it will drive the connecting plate, connecting rod and cleaning bucket to rise together. As a result, the silt and impurities settled on the cleaning bucket will be lifted up. When the cleaning bucket rises to the same height as the top of the treatment box, it is convenient for the staff to scrape and clean the silt and impurities settled on the cleaning bucket. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a PTA wastewater heavy metal ion purification and treatment device according to the present invention.

[0016] Figure 2 This is a cross-sectional side view of the purification mechanism of a PTA wastewater heavy metal ion purification treatment device according to the present invention.

[0017] Figure 3 This is a partial sectional side view of the purification mechanism of a PTA wastewater heavy metal ion purification treatment device according to the present invention.

[0018] Figure 4 This is a side view of the cleaning mechanism of a PTA wastewater heavy metal ion purification and treatment device according to the present invention.

[0019] In the diagram: 1. Purification mechanism; 11. Treatment box; 12. Mounting slot; 13. Mounting frame; 14. Filter screen; 16. Mounting bracket; 17. Aeration pipe; 18. Aeration nozzle; 19. Air inlet pipe; 110. Fixing bracket; 111. Cathode plate; 112. Anode plate;

[0020] 2. Cleaning mechanism; 21. Support frame; 22. Cylinder; 23. Piston rod; 24. Connecting plate; 25. Connecting rod; 26. Cleaning bucket;

[0021] 31. Inlet; 32. Outlet. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] This utility model provides a technical solution: such as Figures 1-4 As shown in this embodiment, a PTA wastewater heavy metal ion purification treatment device includes: a purification mechanism 1, which includes a treatment box 11. Two mounting slots 12 are provided on both sides of the inner wall of the treatment box 11. Two mounting frames 13 are provided inside the treatment box 11, and filter screens 14 are installed inside each of the two mounting frames 13. A mounting bracket 16 is provided on the bottom side of the inside of the treatment box 11. Filter screens 14 are fixedly connected inside the mounting frames 13. The outside of the mounting frames 13 is slidably connected to the inner wall of the mounting slots 12. The bottom of the mounting bracket 16 is fixedly connected to the bottom side of the inside of the treatment box 11. An aeration pipe 17 is provided on the top of the mounting bracket 16, and multiple aeration nozzles 18 are provided on the top of the aeration pipe 17. The aeration pipe 17 is fixedly installed on the top of the mounting bracket 16. Aeration nozzles 18 are fixedly installed in multiple slots on the top of the aeration pipe 17. An air inlet pipe 19 is provided on one side of the aeration pipe 17. A fixing frame 110 is provided on the top of the treatment box 11 near the mounting frame 16. One end of the air inlet pipe 19 is fixedly connected to one side of the aeration pipe 17. The fixing frame 110 is fixedly connected on the top of the treatment box 11 near the mounting frame 16. A cathode plate 111 and an anode plate 112 are respectively provided at the bottom of the fixing frame 110. The cathode plate 111 and the anode plate 112 are electrically connected to the bottom of the fixing frame 110. A water outlet 32 ​​is provided in a slot on one side of the treatment box 11. A water inlet 31 is provided on the side of the treatment box 11 near the support 21. A cleaning mechanism 2 is provided on the side of the treatment box 11 away from the aeration pipe 17.

[0024] In this embodiment, when the device is needed to filter and purify heavy metal ions in wastewater, the wastewater can be introduced into the treatment tank 11 near the cleaning hopper 26 through the inlet 31. The two layers of filter screens 14 can filter and block impurities and sludge in the wastewater. It is worth noting that the filter screens 14 may become clogged after use. Therefore, the handle at the top of the connecting plate 24 can be pulled to remove the two mounting frames 13 from the mounting slot 12, and the blockage on the filter screens 14 can be cleaned. After the sludge and impurities in the wastewater are filtered, the water flows into the treatment tank 11 near the aeration pipe 17. Compressed air is sent into the aeration pipe 17 through the air inlet 19. When the air enters the water through the aeration nozzle 18, it generates a large number of tiny bubbles. These bubbles continuously contact the water as they rise, making... The dissolved oxygen content in the water is significantly increased, improving the odor and color of the water and making it clearer and more transparent. In addition, through the cathode plate 111 and anode plate 112, with iron or aluminum plate as the anode, the anode continuously dissolves under the action of direct current to generate ferrous ions or aluminum ions. These metal ions have strong reducing properties, and appropriately increasing the current intensity can increase the generation rate of metal ions, thereby accelerating the reduction and removal of heavy metal ions. However, excessive current intensity may cause the anode material to dissolve too quickly, generating too many metal ions and increasing the difficulty of subsequent treatment. Therefore, it is necessary to reasonably adjust the current intensity according to the actual situation of the wastewater and the treatment requirements to achieve the removal purpose. At the same time, a reduction reaction occurs on the cathode, producing substances such as hydrogen gas, which helps to improve the water quality of the wastewater. The purified wastewater is discharged through the outlet 32.

[0025] like Figures 1-4 As shown, the cleaning mechanism 2 includes a bracket 21. The bottom of the bracket 21 is fixedly connected to the top of the treatment box 11 on the side away from the aeration pipe 17. A cylinder 22 is fixedly connected to the top of the bracket 21. The output end of the bottom of the cylinder 22 is fixedly connected to the top of the piston rod 23.

[0026] In this embodiment, after the wastewater is introduced into the treatment tank 11 and filtered, some sludge and impurities will settle. In order to ensure the subsequent cleaning of the sludge and impurities, the cylinder 22 can be activated to drive the piston rod 23 to rise and fall. When the piston rod 23 rises, it will drive the connecting plate 24, the connecting rod 25 and the cleaning bucket 26 to rise together. As a result, the sludge and impurities settled on the cleaning bucket 26 will be lifted up. When the cleaning bucket 26 rises to the same height as the top of the treatment tank 11, it is convenient for the staff to scrape and clean the sludge and impurities settled on the cleaning bucket 26.

[0027] This utility model provides a heavy metal ion purification and treatment device for PTA wastewater, the specific working principle of which is as follows:

[0028] When the device is needed to filter and purify heavy metal ions in wastewater, the wastewater can be introduced into the treatment tank 11 near the cleaning hopper 26. The two layers of filter screens 14 can filter and block impurities and sludge in the wastewater. However, with prolonged use, the filter screens 14 may become clogged and reduce their efficiency. Therefore, the handle at the top of the connecting plate 24 can be pulled to remove the two mounting frames 13 from the mounting slot 12, and the blockage on the filter screens 14 can be cleaned. Once the sludge and impurities in the wastewater are effectively filtered, the cleaned water will naturally flow into the treatment tank 11 near the aeration pipe 17. At this time, compressed air is sent into the aeration pipe 17 through the air inlet pipe 19, and the air then enters the water body through the aeration nozzle 18. During this process, the air and water come into full contact, generating a large number of tiny bubbles. As these bubbles rise in the water, they continuously interact with the surrounding water, significantly increasing the dissolved oxygen content in the water. Adding dissolved oxygen improves water quality, promotes the biodegradation process, and enhances the overall purification effect. Under the continuous and stable action of direct current, the anode material in the anode plate 112 gradually dissolves to produce ferrous or aluminum ions. These metal ions have strong reducing properties, and appropriately increasing the current intensity can increase the generation rate of metal ions, thereby accelerating the reduction and removal of heavy metal ions to achieve the removal purpose. At the same time, a reduction reaction occurs on the cathode, producing substances such as hydrogen, which helps improve the water quality of wastewater. To ensure the subsequent cleaning of sludge and impurities, the cylinder 22 can be activated to drive the piston rod 23 to rise and fall. When the piston rod 23 rises, it will drive the connecting plate 24, connecting rod 25, and cleaning bucket 26 to rise together, thereby lifting the sludge and impurities deposited on the cleaning bucket 26. When the cleaning bucket 26 rises to the same height as the top of the treatment tank 11, it is convenient for the staff to scrape and clean the sludge and impurities deposited on the cleaning bucket 26.

[0029] 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 purifying and treating heavy metal ions in PTA wastewater, characterized in that, include: Purification mechanism (1), the purification mechanism (1) includes a treatment box (11), two mounting slots (12) are opened on both sides of the inner wall of the treatment box (11), two mounting frames (13) are provided in the treatment box (11), and a filter screen (14) is provided inside the two mounting frames (13). A mounting bracket (16) is provided on the bottom side of the inside of the treatment box (11), an aeration pipe (17) is provided on the top of the mounting bracket (16), a plurality of aeration nozzles (18) are provided on the top of the aeration pipe (17), an air inlet pipe (19) is provided on one side of the aeration pipe (17), a fixing bracket (110) is provided on the top side of the treatment box (11) near the mounting bracket (16), a cathode plate (111) and an anode plate (112) are respectively provided at the bottom of the fixing bracket (110), and a cleaning mechanism (2) is provided on the side of the treatment box (11) away from the aeration pipe (17).

2. The PTA wastewater heavy metal ion purification and treatment device according to claim 1, characterized in that: The cleaning mechanism (2) includes a bracket (21), the bottom of which is fixedly connected to the top of the treatment box (11) away from the aeration pipe (17), and a cylinder (22) is fixedly connected to the top of the bracket (21), the output end of the bottom of the cylinder (22) being fixedly connected to the top of the piston rod (23).

3. The PTA wastewater heavy metal ion purification and treatment device according to claim 2, characterized in that: The bottom end of the piston rod (23) is fixedly connected to the top of the connecting plate (24), and connecting rods (25) are fixedly connected to both sides of the bottom of the connecting plate (24). The bottom of the connecting rods (25) is fixedly connected to the top of the cleaning bucket (26).

4. The PTA wastewater heavy metal ion purification and treatment device according to claim 1, characterized in that: A filter screen (14) is fixedly connected inside the mounting frame (13). The outside of the mounting frame (13) is slidably connected to the inner wall of the mounting groove (12). The bottom of the mounting bracket (16) is fixedly connected to the bottom inside the processing box (11).

5. The PTA wastewater heavy metal ion purification and treatment device according to claim 1, characterized in that: An aeration pipe (17) is fixedly installed on the top of the mounting bracket (16), and an aeration nozzle (18) is fixedly installed in each of the multiple slots opened on the top of the aeration pipe (17).

6. The PTA wastewater heavy metal ion purification and treatment device according to claim 1, characterized in that: One end of the air inlet pipe (19) is fixedly connected to one side of the aeration pipe (17), and a fixing bracket (110) is fixedly connected to the top of the treatment box (11) near the mounting bracket (16).

7. The PTA wastewater heavy metal ion purification and treatment device according to claim 1, characterized in that: The bottom of the fixed frame (110) is electrically connected to a cathode plate (111) and an anode plate (112). A slot is provided in one side of the treatment box (11) for a water outlet (32). A water inlet (31) is provided on the side of the treatment box (11) near the support (21).

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