Ozone polyaryletherketone hollow fiber membrane filtration device

Abstract

Ozone polyarylene ether ketone hollow fiber membrane filtering device relates to the technical field of filtering device, including oxidation reactor and hollow fiber membrane mechanism, the hollow fiber membrane mechanism includes shell, the shell inside is equipped with hollow fiber membrane assembly and the purge pipe group below the hollow fiber membrane assembly, the oxidation reactor is connected with the purge pipe group through the ozone micro bubble generator.The utility model discloses solve the problem of the filtering device in traditional technology, add certain concentration ozone, will make the oxidation damage of commonly used ultrafiltration membrane, but further reduce the service life, influence the filtration efficiency.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, specifically to an ozone polyaryletherketone hollow fiber membrane filtration device. Background Technology

[0002] With the acceleration of urbanization and rapid economic development, municipal water supply systems face complex water quality problems and increasingly stringent water quality standards. Traditional water treatment processes (such as coagulation, sedimentation, filtration, and disinfection) have limitations in dealing with complex water qualities and slightly polluted water sources, making it difficult to fully meet residents' demands for high-quality drinking water. Ultrafiltration can remove suspended solids, colloids, bacteria, viruses, and large molecular organic matter from water; however, most water sources come from rivers and lakes, which contain various algae. These algae can cause physical blockage of the ultrafiltration membrane, release chemicals that bind to the membrane surface, and form biofilms from algal metabolites and microorganisms on the membrane surface. Over time, this can lead to algal contamination of the ultrafiltration membrane.

[0003] Currently, ozone, a highly efficient and environmentally friendly oxidant, is often used as a pretreatment before ultrafiltration to remove algae from feedwater. The organic hollow fiber membranes commonly used in ultrafiltration are primarily made of polysulfone and polyethersulfone, which have low tolerance to chemical cleaning, causing them to gradually age, lose toughness, and eventually break. This makes them unsuitable for integrated ozone and ultrafiltration membrane designs. Therefore, a separate design allows some surviving algae to proliferate again, ultimately causing membrane fouling of the ultrafiltration membrane. Furthermore, separate designs typically occupy a larger area, increasing management and operating costs.

[0004] A prior art patent, CN214990446U, discloses a solution that combines ozone catalysis with a ceramic flat-sheet membrane to provide a device with good treatment effect and reduced membrane fouling. Its inorganic ceramic membrane has strong stability, avoiding damage caused by the strong oxidizing properties of ozone; however, the ceramic membrane is rigid and has a low density of states. Polyaryletherketones (PAGEs) are a class of crystalline polymers composed of phenylene rings linked by oxygen bridges (ether bonds) and carbonyl groups (ketones). The PAGE molecular structure contains rigid benzene rings, thus exhibiting excellent high-temperature performance, mechanical properties, and chemical corrosion resistance. The ether bonds in the PAGE molecular structure also give it flexibility, resulting in hollow fiber membranes with high density of states. Hollow fiber membranes made from PAGEs have better toughness and higher density of states than inorganic ceramic membranes, and are more chemically resistant and less prone to breakage than common organic hollow fiber membranes made of polysulfone and polyethersulfone.

[0005] To fully leverage the synergistic effect of ozone microbubble oxidation and oxidation-resistant polyaryletherketone (PAEK) hollow fiber ultrafiltration membrane filtration, ozone and PAEK hollow fiber ultrafiltration membranes are integrated into the same structure, constructing an ozone / PAEK ultrafiltration membrane short-process technology. Based on the excellent physicochemical stability of this hollow fiber ultrafiltration membrane, this device can provide a continuous supply of ozone micro-nanobubbles while ensuring sufficient water production. This achieves continuous removal of algae and pollutants in the water, mitigating membrane fouling. Simultaneously, the high-velocity airflow can be used for membrane cleaning to a certain extent, increasing membrane lifespan. Furthermore, a scraper is installed at the bottom of the device to promptly remove generated sludge, ensuring continuous and stable operation. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an ozone-based polyaryletherketone hollow fiber membrane filtration device. This device solves the problem that adding a certain concentration of ozone to a traditional filtration device can cause oxidation and damage to commonly used ultrafiltration membranes, thereby further reducing their service life and affecting filtration efficiency.

[0007] To achieve the above objectives, the present invention provides the following technical solution.

[0008] An ozone-based polyaryletherketone hollow fiber membrane filtration device includes an oxidation reactor and a hollow fiber membrane mechanism. The hollow fiber membrane mechanism includes a housing, inside which a hollow fiber membrane module and a purge pipe assembly located below the hollow fiber membrane module are disposed.

[0009] The oxidation reactor is connected to the purge pipe assembly via an ozone microbubble generator.

[0010] As an optimized solution, the outer shell is provided with a water storage tank that communicates with its inner cavity, and the height of the water storage tank is higher than that of the outer shell.

[0011] As an optimized solution, the hollow fiber membrane module is a polyaryletherketone ultrafiltration membrane, which is composed of one or two of the following: polyaryletherketone ultrafiltration membrane, polyaryletherketone ultrafiltration membrane, polyaryletherketone ultrafiltration membrane ketone, polyaryletherketone ketone ultrafiltration membrane, and polyaryletherketone ketone ultrafiltration membrane.

[0012] As an optimized solution, a dosing structure is connected to the oxidation reactor.

[0013] As an optimized solution, a sludge scraper is provided at the bottom of the housing, which moves horizontally.

[0014] As an optimized solution, the purge pipe assembly includes a purge gas main pipe, and several purge gas branch pipes perpendicular to it are fixedly connected in parallel on the purge gas main pipe.

[0015] As an optimized solution, the upper surface of the purge gas branch pipe is provided with several purge holes arranged in parallel along its axial direction.

[0016] As an optimized solution, several hollow fiber membrane modules are arranged in parallel, and each hollow fiber membrane module is connected to a water outlet branch pipe at its top. The several water outlet branch pipes are connected to the water outlet main pipe.

[0017] As an optimized solution, the outlet main pipe is connected to the product water tank through the main outlet pipe.

[0018] As an optimized solution, each of the water outlet branch pipes is connected to a stop valve.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] The ozone microbubble generator injects ozone microbubble into the membrane filtration device, thereby removing bacteria and microorganisms from the water, improving water quality, alleviating membrane fouling, and performing a certain degree of membrane cleaning.

[0021] Furthermore, the design uses an oxidation-resistant polyaryletherketone hollow fiber membrane, which can operate stably under oxidizing conditions without damage, thus achieving continuous and stable operation of the water treatment process.

[0022] In addition, this device uses the height difference of the water source to provide energy, so that ultrafiltration can be carried out without pressure. This reduces the amount of equipment required without affecting the treatment effect, and greatly reduces the corresponding costs. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the hollow fiber membrane mechanism of this utility model.

[0026] In the diagram: 1-Oxidation reactor; 2-Ozone output pipe; 3-Ozone microbubble generator; 4-Ozone microbubble generator output pipe; 5-Hollow fiber membrane structure; 6-Purge gas main pipe; 7-Purge gas branch pipe; 8-Hollow fiber membrane module; 9-Outlet branch pipe; 10-Stop valve; 11-Outlet main pipe; 12-Main outlet pipe; 13-Water pipe for storage tank; 14-Water storage tank; 15-Product water tank; 16-Sludge scraper; 17-Outer shell. Detailed Implementation

[0027] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0028] like Figure 1 and Figure 2 As shown, the ozone polyaryletherketone hollow fiber membrane filtration device includes an oxidation reactor 1 and a hollow fiber membrane mechanism 5. The hollow fiber membrane mechanism 5 includes a housing, inside which a hollow fiber membrane module 8 and a purge pipe assembly located below the hollow fiber membrane module 8 are provided.

[0029] The oxidation reactor 1 is connected to the purge pipe assembly via the ozone microbubble generator 3.

[0030] The outer shell is provided with a water storage tank 14 that communicates with its inner cavity, and the height of the water storage tank 14 is higher than that of the outer shell.

[0031] The water storage tank 14 is connected to the outer shell through the water storage tank pipe 13.

[0032] Ozone can be generated inside the oxidation reactor 1 and input into the ozone microbubble generator 3 through the ozone output pipe 2.

[0033] The oxygen microbubble generator pumps ozone into tiny bubbles, which are then piped into the hollow fiber membrane device.

[0034] The hollow fiber membrane module 8 is a polyaryletherketone ultrafiltration membrane, which is composed of one or two of the following: polyaryletherketone ultrafiltration membrane, polyaryletherketone ultrafiltration membrane, polyaryletherketone ultrafiltration membrane ketone, polyaryletherketone ketone ultrafiltration membrane, and polyaryletherketone ketone ultrafiltration membrane.

[0035] The oxidation reactor 1 is connected to a dosing structure, which allows the addition of additives.

[0036] A scraper 16 is installed at the bottom of the outer casing, which moves horizontally.

[0037] The bottom contains a sludge scraper 16 that can move laterally, which cleans up the flocs or some bacteria and microorganisms that fall after the ozone microbubbles treat the organic matter in the water. The sludge scraper works slowly along the bottom of the pool, so that the flocs are discharged through the sludge discharge pipe of the outer shell.

[0038] The purge pipe assembly includes a purge gas main pipe 6, and several purge gas branch pipes 7 perpendicular to it are fixed in parallel on the purge gas main pipe 6. At this time, ozone is efficiently dissolved in the water in the form of tiny bubbles.

[0039] The ozone microbubble generator 3 is connected to the scavenging main pipe through the ozone microbubble generator output pipe 4.

[0040] Several purge holes are arranged in parallel along the axial direction on the upper surface of the purge gas branch pipe 7.

[0041] Several hollow fiber membrane modules 8 are arranged in parallel. Each hollow fiber membrane module 8 is connected to a water outlet branch pipe 9 at its top. Several water outlet branch pipes 9 are connected to the water outlet main pipe 11.

[0042] The hollow fiber membrane module 8 is suspended in the pool by two fixed rods, allowing it to fully contact the water. Water enters from the outside of each hollow fiber membrane and flows out from the middle of each hollow fiber membrane. Then, multiple hollow fiber membranes are combined to form a membrane module, which then flows out together.

[0043] The water outlet main pipe 11 is connected to the water production tank 15 through the main water outlet pipe 12.

[0044] Each outlet branch pipe 9 is connected to a stop valve 10. The individual stop valve 10 allows for the replacement of a membrane module when it is damaged, without affecting the use of other membrane modules.

[0045] The structures of each part mentioned above are all common in daily life and are common knowledge to those skilled in the art, so the specific structures will not be described in detail here. The innovation of this invention lies in the connection relationship between the various structural parts.

[0046] The working principle of this device is as follows:

[0047] The ozone microbubble generator 3 injects microbubble ozone into the membrane filtration device to remove bacteria and microorganisms in the water, improve water quality, alleviate membrane fouling, and perform a certain degree of membrane cleaning.

[0048] Furthermore, the design uses an oxidation-resistant polyaryletherketone hollow fiber membrane, which can operate stably under oxidizing conditions without damage, thus achieving continuous and stable operation of the water treatment process.

[0049] In addition, this device uses the height difference of the water source to provide energy, so that ultrafiltration can be carried out without pressure. This reduces the amount of equipment required without affecting the treatment effect, and greatly reduces the corresponding costs.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. An ozone-based polyaryletherketone hollow fiber membrane filtration device, characterized in that: The system includes an oxidation reactor (1) and a hollow fiber membrane structure (5). The hollow fiber membrane structure (5) includes a housing, inside which a hollow fiber membrane module (8) and a purge tube assembly located below the hollow fiber membrane module (8) are provided. The oxidation reactor (1) is connected to the purge tube assembly via an ozone microbubble generator (3).

2. The ozone polyaryletherketone hollow fiber membrane filtration device according to claim 1, characterized in that: The outer shell is provided with a water storage tank (14) that communicates with its inner cavity, and the height of the water storage tank (14) is higher than that of the outer shell.

3. The ozone polyaryletherketone hollow fiber membrane filtration device according to claim 1, characterized in that: The hollow fiber membrane module (8) is a polyaryletherketone ultrafiltration membrane, which is composed of one or two of the following: polyaryletherketone ultrafiltration membrane, polyaryletherketone ultrafiltration membrane, polyaryletherketone ultrafiltration membrane ketone, polyaryletherketone ketone ultrafiltration membrane, and polyaryletherketone ketone ultrafiltration membrane.

4. The ozone polyaryletherketone hollow fiber membrane filtration device according to claim 1, characterized in that: The oxidation reactor (1) is connected to a dosing structure.

5. The ozone polyaryletherketone hollow fiber membrane filtration device according to claim 1, characterized in that: The bottom of the outer casing is equipped with a sludge scraper (16) that moves horizontally.

6. The ozone polyaryletherketone hollow fiber membrane filtration device according to claim 1, characterized in that: The purge pipe assembly includes a purge gas main pipe (6), and several purge gas branch pipes (7) perpendicular to it are fixedly connected in parallel on the purge gas main pipe (6).

7. The ozone polyaryletherketone hollow fiber membrane filtration device according to claim 6, characterized in that: The upper surface of the purge gas branch pipe (7) has several purge holes arranged in parallel along its axial direction.

8. The ozone polyaryletherketone hollow fiber membrane filtration device according to claim 1, characterized in that: Several hollow fiber membrane modules (8) are arranged in parallel, and each hollow fiber membrane module (8) is connected to a water outlet branch pipe (9) at its top. Several water outlet branch pipes (9) are connected to the water outlet main pipe (11).

9. The ozone polyaryletherketone hollow fiber membrane filtration device according to claim 8, characterized in that: The outlet water main (11) is connected to the water production tank (15) through the main outlet water pipe (12).

10. The ozone polyaryletherketone hollow fiber membrane filtration device according to claim 8, characterized in that: Each of the water outlet branches (9) is connected to a stop valve (10).

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