Adsorption flowing water driven friction catalysis pipeline water quality purification device as well as preparation method and application thereof

Abstract

The invention discloses an adsorption flowing water driven friction catalysis pipeline water purification device and a preparation method and application thereof, and belongs to the technical field of water supply and drainage. The adsorption flowing water driven friction catalysis pipeline water quality purification device comprises an adsorption friction catalyst and a water flow regulator which are connected in series, and the water flow regulator is arranged at one end of a water incoming direction; the adsorption friction catalytic converter comprises a friction catalytic tube and an adsorption friction catalytic bomb arranged in the friction catalytic tube in a sleeving manner; the adsorption friction catalysis bomb is driven by water flow in the pipe to rotate along the axial direction, and the outer wall of the adsorption friction catalysis bomb is in friction matching with the inner wall of the friction catalysis pipe; the water flow regulator comprises a lotus-shaped flow regulating nozzle, a moving ring matched with a tail-spraying-shaped nozzle of the lotus-shaped flow regulating nozzle, and a worm gear for driving the moving ring to move. The device can realize synchronous, on-line, safe and efficient purification of new pollutants such as PFAS, heavy metals and disinfection byproducts in tap water, and has the advantages of no secondary pollution, no extra energy consumption, small influence on tap water flow and long service time.

Description

Technical Field

[0001] This invention belongs to the field of water supply and drainage technology, and relates to an adsorption-driven friction catalysis pipeline water purification device, its manufacturing method, and its application. Background Technology

[0002] The quality of drinking water has a direct impact on people's health and safety, and heavy metals and disinfection byproducts in tap water have attracted people's attention. With the identification and discovery of new pollutants, new pollutants such as perfluorinated and polyfluoroalkyl substances (PFAS) have attracted high attention due to their wide distribution, persistence and toxicity to humans (Lin Qian Li et al., Occurrence of perfluorinated and polyfluoroalkyl substances in drinking water in China and health risk assessment based on a probabilistic approach, Journal of Hazardous Materials 480 (2024) 136072). Regarding PFAS in tap water, various countries have successively issued relevant standards: The US Environmental Protection Agency (EPA) National Drinking Water Standards limits: PFOA (perfluorooctanoic acid): 4 ng / L; PFOS (perfluorooctane sulfonate): 2 ng / L; The European Union's Drinking Water Directive (EU) 2020 / 2184 stipulates limits: total PFAS (including 20 types of PFAS): 0.50 μg / L (500 ng / L); individual PFAS (such as PFOA, PFOS): 0.10 μg / L (100 ng / L). China's Drinking Water Hygiene Standards (GB 5749-2022) has medium limits: PFOA ≤ 0.00008 mg / L (80 ng / L), PFOS ≤ 0.00004 mg / L (40 ng / L), and the "Drinking Water Source Environmental Quality Standards" are currently being developed, which proposes to add new pollutants such as PFAS. PFOS and PFOA have been included in the Stockholm Convention's control list, requiring contracting parties to phase them out. Studies have indicated that PFAS concentrations in some Chinese cities far exceed international standards, prompting efforts to update national standards.

[0003] For the purification of PFAS in tap water, activated carbon adsorption is generally used. However, ordinary activated carbon has limited adsorption capacity, and it needs to be regenerated after adsorption, leading to secondary pollution. Xu Qian and Lü Huijie prepared nanofiber membranes for adsorbing various perfluorinated and polyfluoroalkyl substances (Preparation of nanofiber membranes capable of adsorbing various perfluorinated and polyfluoroalkyl substances, application number: 202411436091.3). Although this improved the adsorption capacity, it still failed to solve the problems of regeneration and secondary pollution. Furthermore, while simple adsorption methods can use pipeline filter adsorbers, they suffer from high resistance, short adsorption contact time, poor adsorption effect, and sometimes even secondary pollution. Meanwhile, most water supply systems in various regions are already very mature, but they lack the ability to purify trace amounts of new pollutants such as PFAS in water. Modifications requiring new treatment equipment would require more space, resulting in high investment and operating costs. In practice, there is an urgent need for a highly efficient and energy-saving technology and device for deep purification of tap water that does not require significant modifications to existing facilities.

[0004] Tribocatalysis and piezoelectric catalysis are emerging catalytic technologies that utilize the built-in electric field generated by triboelectric or piezoelectric materials under mechanical stress to drive chemical reactions. They can directly convert mechanical energy into chemical energy, thereby triggering catalytic reactions, and are environmentally friendly, characterized by no secondary pollution and no reagent consumption. They show great potential in energy conversion, pollutant degradation, and sterilization, meeting the needs of deep purification of tap water. Simultaneously, the flow of water in tap water pipes can provide energy for tribocatalysis. Publicly available technologies utilize water flow to drive triboelectric power generation, such as those by Sun Linlin et al., which use water flow to drive the contact friction between rabbit fur and PTFE to generate charge transfer. After conditioning and processing by a circuit collection module, usable electrical energy is output (A pipe fluid-driven triboelectric power generation device and its usage method, application number: 2024107585626). There are also publicly disclosed technologies for PFAS purification using piezoelectric catalysis based on the mechanical energy of flowing water. Ding Jinjian et al. (A PFOS Degradation Pipeline and Method Using Flowing Water Mechanical Energy, Application No.: 2024118823793) utilize a pipe with a composite piezoelectric layer loaded on its inner wall. Semiconductor nanopiezoelectric materials, driven by the mechanical energy of flowing water, generate redox-active species in water, causing low-concentration PFOS in the water to accumulate on the material surface. Through piezoelectric catalysis driven by the mechanical energy of flowing water, in-situ, low-energy-consumption defluorination of PFOS is achieved without additional energy input or reagents, aligning with the development direction of water treatment technology and exhibiting significant energy-saving characteristics. However, this technology has the following problem: it cannot be used for PFAS purification in tap water. 1. The large fluctuations in water flow and pressure in tap water pipes lead to unstable piezoelectric catalytic purification effects; Second, the piezoelectric catalytic purification efficiency of water flow alone is not high, and it cannot achieve deep purification of pollutants such as PFAS in tap water. Third, the piezoelectric material used is zinc oxide and a fluoropolymer piezoelectric layer. During use, it will continuously release harmful substances such as zinc into the water, and some piezoelectric layers may even fall off, which will pollute the tap water. Fourth, during use, water sediments and decomposition products inevitably adsorb and deposit on the piezoelectric layer of the pipe wall, causing the piezoelectric catalyst to fail and making it unusable in practice. 5. The PFAS content in tap water is generally very low. Although low concentrations of PFOS in water can be enriched on the inner wall of the PVDF composite piezoelectric layer, the enrichment capacity is limited, and the utilization efficiency of low concentration water is not high. VI. The preparation of pipe coatings using zinc oxide nanorods is a complex and costly process. 7. Heavy metals, disinfection byproducts and other harmful substances were not treated and purified simultaneously.

[0005] These problems prevent existing technologies from automatically purifying PFAS in tap water pipelines using water flow energy. In practice, there is an urgent need for a highly energy-efficient and safe online water purification device. Summary of the Invention

[0006] To achieve simultaneous, safe, and efficient online purification of new pollutants such as PFAS, heavy metals, and disinfection byproducts in tap water, without secondary pollution, additional energy consumption, minimal impact on tap water flow, and long service life, this invention develops an adsorption-driven friction catalytic pipeline water purification device, its manufacturing method, and its application.

[0007] The adsorption-driven friction catalytic pipeline water purification device of the present invention includes an adsorption friction catalytic converter and a water flow regulator connected in series with it at one end of the inlet water direction. The adsorption friction catalyst includes a friction catalyst tube and an adsorption friction catalyst bomb sleeved inside the tube; the adsorption friction catalyst bomb can rotate axially under the drive of water flow inside the tube, and its outer wall is frictionally matched with the inner wall of the friction catalyst tube. Furthermore, a friction catalytic layer is provided on the inner wall of the friction catalytic tube, and a flow guiding groove is provided on the friction catalytic layer that spirals around the friction catalytic tube along the axial direction. The adsorption friction catalyst bomb includes a supporting central shaft, an adsorption friction catalyst body, a water flow front drive impeller, a water flow rear drive impeller, and a retaining disc. The supporting central shaft is located at the axis of the hollow cylindrical adsorption friction catalyst body and is supported and fixed to the inner wall of the adsorption friction catalyst body by multiple supports. A water flow front drive impeller is set at the end of the supporting central shaft in the direction of water flow, and a water flow rear drive impeller is set at the end of the supporting central shaft in the direction of water flow. After the supporting central shaft passes through the water flow rear drive impeller, a sharp axle is formed at its end. The tip of the axle rests on the center of the retaining disc, which is fixed inside the friction catalyst tube at the end in the direction of water flow. This enables the water flow to drive the adsorption friction catalyst bomb to rotate along the supporting central shaft with the axle as support. Furthermore, the adsorption friction catalyst is a central hollow cylinder composed of a coaxial porous inner cylinder and a porous outer cylinder stacked together. The outer surface of the outer cylinder is spirally wound with a porous strip-shaped friction armor along the cylinder axis. The gap between the inner cylinder and the outer cylinder forms an annular cavity, which is the adsorption catalyst cavity. The adsorption catalyst cavity is filled with an adsorption catalyst. Furthermore, the inner wall of the adsorption friction catalyst is a porous plate with a pore size of 0.1-2 mm and a pore area ratio of 30-60%. The two ends of the adsorption catalytic chamber are rigid conductive metal microporous meshes with a pore size of 0.1-2 mm. The friction armor wrapped around the outer surface of the outer cylinder is a porous strip-shaped body that spirally surrounds the cylinder wall with the central axis of the adsorption friction catalyst as the axis. The edges between the strips naturally form friction armor slots with uniform width, which are spiral friction grooves. The thickness of the friction armor is 1-5 mm. In the direction of water flow, the inner wall of the outer cylinder corresponding to the friction groove is provided with spiral obstruction flow wings that follow the direction of the friction groove. The cross-section of the spiral obstruction flow wings is arc-shaped, with the concave arc direction facing the direction of water flow. The width is 1 / 5-1 / 10 of the radial width of the adsorption catalytic chamber. Furthermore, the clamping disc includes a disc center, a support ring, disc arms, a clamping tongue, a clamping cam, and a clamping switch in the direction of water flow out. The disc center is located in the center of the support ring, the clamping tongue is located inside the disc arms, and multiple disc arms extend from the disc center to the support ring. Multiple clamping cams are set inside the disc center, and each clamping cam corresponds to the extension and retraction of each clamping tongue. The clamping switch is connected to the clamping cam to realize the rotation of the clamping cam. The disc center is a smooth, rigid mirror surface that can resist the shaft needle and allow the adsorption friction catalyst to rotate freely around the central axis where the shaft needle is located. The clamping tongue is located inside the disc arm. The rotation of the clamping cam is adjusted by the clamping switch to realize the extension and retraction of the clamping tongue. The tip of the tongue protrudes from the outer ring of the support ring. When the clamping disc is placed in the pipe, the clamping switch is rotated, and the clamping tongue is fixedly clamped to the pipe wall, and the clamping disc is fixed inside the pipe of the friction catalyst tube. Furthermore, the water flow regulator includes a lotus-shaped flow-adjusting nozzle with its opening facing the direction of water flow, a matching walking ring that moves along a guide rod in the direction of water flow, and a worm gear that drives the walking ring. The lotus-shaped flow-adjusting nozzle consists of multiple elastic petal-shaped guide vanes converging into a tail-spray-shaped nozzle. The walking ring is an annular cylinder with a circular constriction opening that is wider on the outside and narrower on the inside, facing the guide vanes of the lotus-shaped flow-adjusting nozzle. The tail-spray-shaped nozzle formed by the guide vanes can extend into the constriction opening of the walking ring. The outer wall of the walking ring is provided with threads that mesh with the teeth of the worm gear. Adjusting the worm gear allows for... The threaded drive ring moves on the guide rod, causing the tail-jet nozzle formed by the guide vanes of the lotus-shaped flow regulator to extend into or pull out of the binding port of the ring. By constraining and releasing the binding port, the guide vanes converge to adjust the inner diameter of the tail-jet nozzle, thereby adjusting the water flow velocity and changing the driving force of the water flow on the front impeller, thus changing the rotation speed of the adsorption friction catalyst. The two ends of the worm gear are sealed to the outer wall of the water flow regulator pipe through sealing rings. The water flow regulator is connected to the pipe using a fixed rod and a large flange. The front end of the water flow regulator connects to the incoming water direction via a front flange, while the end of the adsorption friction catalyst connects to the outgoing water direction via a rear flange. The preparation method of the adsorption-driven frictional catalytic pipeline water purification device of the present invention includes the following steps: A: Preparation method of friction catalytic tube: Take a section of titanium tube with the required inner diameter, use the rotation and lifting method to open spiral grooves on the inner wall of the tube, remove surface oil stains with alcohol organic solvent, clean the inner wall with dilute hydrochloric acid, wash with water until neutral, dry the water, and obtain the pretreated titanium tube. One end of the pretreated titanium tube is sealed, and a 1-2 mol / L NaOH solution is added. The tube is then sealed and heated to 180-200℃ for hydrothermal treatment for 6-12 hours. After returning to room temperature, the alkaline solution is released, and the tube is washed with water until it is nearly neutral. Then, a 0.05-0.2 mol / L barium hydroxide solution is injected into the titanium tube, and the tube is sealed and heated to 180-200℃ for 8-12 hours. After rinsing with deionized water, the tube is dried by passing dry nitrogen gas at 50-60℃. Under nitrogen protection, the tube is then heated to 450-550℃ for 30-60 minutes to obtain a friction catalytic tube with a friction catalytic layer and flow-guiding grooves on the inner wall. B: Preparation method of adsorption tribocatalytic bomb: (1) Friction nail preparation method: Take a porous titanium plate with a thickness of 0.5-2 mm, a pore size of 0.01-0.2 mm, and a pore area accounting for 50-80% of the titanium plate area. Wind it into the desired shape, immerse it in a 0.1-1 mol / L sodium hydroxide solution, and react it at 180-200℃ for 6-12 h. Wash it with water until it is nearly neutral, then immerse it in a 0.05-0.2 mol / L barium hydroxide solution, heat it in a sealed container to 180-200℃, and keep it at that temperature for 8-12 h. After rinsing it with deionized water, dry it at 50-60℃, and calcine it at 450-550℃ for 30-60 min to obtain friction armor. (2) Preparation method of adsorption catalyst: Macroporous cation exchange resin pretreated according to conventional methods was immersed in a solution containing iron ions and stirred for 1-3 hours. After standing for 12-24 hours, solid-liquid separation was performed. After rinsing the iron ions on the resin surface with deionized water, the resin was immersed in a sodium hydroxide solution with a pH of 10-11 and stirred for 6-8 hours. Sodium hydroxide was added to maintain the pH of the solution at 10-11, and the solution was allowed to stand for 8-12 hours. After drying, modified iron-supported resin was obtained. The modified iron-supported resin was immersed in a 1-3 mol / L potassium hydroxide solution and allowed to stand for 8-12 hours. The modified iron-supported resin was placed in a vacuum muffle furnace with a vacuum relative pressure not exceeding -0.09 MPa. Under continuous vacuum conditions, the muffle furnace was heated to 450-750℃ at a rate of 1-2℃ / min. The reaction was carried out in a sealed, heat- and pressure-maintained environment for 1-3 hours. After cooling to room temperature inside the furnace, the resin was removed and washed with water until it was nearly neutral to obtain spherical granular adsorption catalyst. (3) Select a metal mesh and a porous metal plate with a pore size smaller than that of the adsorption catalyst to prepare an empty cylinder of the adsorption friction catalyst body of the required size. The friction shell prepared in step (1) is spirally wound and installed on the outer wall. The adsorption catalyst prepared in step (2) is filled into the adsorption catalyst cavity. The supporting central shaft, the water flow front drive impeller, the water flow rear drive impeller and the clamping plate are installed to obtain the adsorption friction catalyst body 11.

[0008] C: Installation Install according to the structure of the adsorption-driven friction catalysis pipeline water purification device.

[0009] The application of the adsorption-driven friction catalytic pipeline water purification device of the present invention is to be placed in water pipes such as tap water pipes to remove one or more of PFAS, heavy metals or disinfection byproducts from the water flowing in the pipes.

[0010] The present invention relates to an adsorption-driven flow-through frictional catalysis pipeline water purification device, its manufacturing method, and its application. Utilizing the energy of flowing tap water within the pipeline and oxidants such as residual chlorine in the tap water, it combines advanced oxidation technologies such as adsorption, frictional catalysis, and chemical catalysis to achieve efficient online purification of new pollutants such as PFAS in the pipeline. Simultaneously, it also purifies heavy metals and disinfection byproducts. Specifically, it has the following advantages: I. Utilizing the energy of water flow in the pipes and oxidants such as residual chlorine in tap water, it requires no additional energy consumption or chemical addition, releases no harmful substances, causes no secondary pollution, and is energy-saving, low-carbon, healthy, and environmentally friendly. Second, by using a water flow regulator, the system utilizes the water flow in the pipeline to drive the rotational friction catalytic degradation of pollutants, eliminating the need for additional energy consumption, saving energy and reducing carbon emissions. It can also adapt to changes in water flow and pressure in the pipeline, thus solving the problem of unstable catalytic purification effect. III. Hollow adsorption friction catalytic purification bullet design: The guide groove on the inner wall of the friction tube combined with the rotating spiral obstruction flow blade improves the utilization of water flow energy, improves adsorption and friction catalytic efficiency, and reduces water flow resistance, thus enabling online adsorption and rotating friction catalytic purification of water quality. Fourth, the rotational friction action enables continuous renewal of the catalyst surface, avoiding performance degradation caused by the deposition of scale and catalytic decomposition products on the catalyst surface, greatly improving service life and extending the regeneration and maintenance cycle; Fifth, by using iron-supported activated carbon, adsorption enrichment and tribocatalysis are coupled. Friction increases the surface charge of the adsorbent, making the adsorption capacity stronger. At the same time, adsorption enrichment increases the content of pollutants on the catalyst, which also improves the efficiency of tribocatalytic degradation of pollutants, thus solving the problem of low catalytic purification efficiency. VI. The introduction of friction armor design reduces the preparation cost and difficulty of the device, and improves the catalytic effect; VII. The card plate design allows for convenient and quick installation and disassembly; 8. The shaft and pin are combined with a smooth mirror surface to secure the disk core design, which allows the adsorption friction catalyst to rotate freely around the central axis where the shaft and pin are located. It has low resistance, long service life, and requires no maintenance. 9. The ion exchange functional groups anchor the iron ions and disperse them evenly, forming hydroxyl iron oxide particles with smaller particle size. The negative pressure carbonization produces porous carbon balls containing hydroxyl iron oxide with better performance and stronger purification ability for pollutants such as PFAS, heavy metals, and efficacy by-products. 10. The entire device resembles a section of pipe, and the water purification process is completed online within the pipe. It occupies a small area, saves space, is simple to manufacture and maintain, requires no changes to the existing water supply system, can be directly introduced into the pipe, and is easy to install. Attached Figure Description

[0011] Figure 1 A schematic diagram of the overall appearance of a water purification device for adsorption-driven frictional catalysis pipeline. Figure 2 A schematic diagram of the internal structure of a water purification device for adsorption-driven frictional catalysis pipeline. Figure 3 This is a schematic diagram of the inner wall of the adsorption friction catalytic tube; Figure 4 Schematic diagram of the adsorption tribocatalytic bomb; Figure 5 This is a schematic diagram of the internal structure of an adsorption-triboelectric catalyst bomb (without adsorption catalyst). Figure 6 This is a schematic diagram of the interior of an adsorption triboelectric catalyst bomb (containing an adsorption catalyst). Figure 7 Schematic diagram of the appearance and internal structure of the card plate; (a) oblique view of the water source, (b) oblique view of the water flow destination, (c) schematic diagram of the internal structure; Figure 8 Here is a schematic diagram of the water flow regulator structure; (a) the lotus-shaped flow regulator in its maximum state, (b) the lotus-shaped flow regulator in its reduced state, and (c) a schematic diagram of the enlarged structure of the lotus-shaped flow regulator and the swimming ring. Figure 9 This is a comparison chart of water treatment effects in application examples.

[0012] In the above diagram: 1 is the adsorption friction catalyst, 10 is the friction catalyst tube, 100 is the friction catalyst layer, 101 is the guide channel, 11 is the adsorption friction catalyst bomb, 111 is the adsorption friction catalyst body, 110 is the supporting central shaft, 1101 is the bracket, 112 is the water flow front drive impeller, 113 is the water flow rear drive impeller, 1102 is the shaft pin, 114 is the clamping disc, 1110 is the friction armor, 1111 is the adsorption catalyst chamber, 1112 is the friction groove, and 1113 is the spiral obstruction flow. 11110 is the adsorption catalyst, 1140 is the disc center, 1141 is the support ring, 1142 is the disc arm, 1143 is the latch, 1144 is the locking cam, 1145 is the locking switch, 12 is the front flange, 13 is the rear flange, 2 is the water flow regulator, 21 is the lotus flow adjustment nozzle, 211 is the guide vane, 22 is the walking ring, 220 is the guide rod, 221 is the binding port, 222 is the thread, 23 is the worm gear, 231 is the sealing ring, 24 is the fixing rod, and 25 is the large flange. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the embodiments and accompanying drawings.

[0014] Example 1 This embodiment describes an adsorption-driven frictional catalytic pipeline water purification device 1 and its preparation method: In this embodiment, the water purification device 1 driven by adsorption flow water friction catalysis pipeline is shown in the schematic diagram below. Figure 1 and Figure 2 It includes an adsorption friction catalyst 1 and a water flow regulator 2 connected in series with it at one end of the water inlet direction; The adsorption friction catalyst 1 includes a friction catalyst tube 10 with a friction catalyst layer 100 disposed on its inner wall and a guide groove 101 spirally surrounding the friction catalyst tube 10 along its axial direction, and an adsorption friction catalyst bomb 11 sleeved inside the tube. A schematic diagram of the adsorption friction catalyst tube is shown below. Figure 3 and Figure 4 The adsorption friction catalyst 11 can rotate axially under the drive of water flow inside the tube, and its outer wall is frictionally matched with the inner wall of the friction catalyst tube 10. The adsorption friction catalyst bomb 11 includes a supporting central shaft 110, an adsorption friction catalyst body 111, a water flow front drive impeller 112, a water flow rear drive impeller 113, and a retaining disc 114. A schematic diagram of its structure is shown below. Figure 5 and Figure 6The supporting central shaft 110 is set at the axis of the hollow cylindrical adsorption friction catalyst 111 and is supported and fixed to the inner wall of the adsorption friction catalyst 111 by multiple brackets 1101. A water flow front drive impeller 112 is set at the water flow in direction end of the supporting central shaft 110, and a water flow rear drive impeller 113 is set at the water flow out direction end of the supporting central shaft 110. After the supporting central shaft 110 passes through the water flow rear drive impeller 113, a sharp shaft needle 1102 is formed at the end. The tip of the shaft needle 1102 is placed at the center of the clamping disk 114 fixed in the friction catalyst tube 10 at the water flow direction end. This enables the water flow to drive the adsorption friction catalyst 11 to rotate along the supporting central shaft 110 with the shaft needle 1102 as support. The adsorption friction catalyst 111 is a hollow cylinder with a central axis formed by stacking a coaxial porous inner cylinder and a porous outer cylinder. The outer surface of the outer cylinder is spirally wound with a porous strip-shaped friction agglomerate 1110 along the cylinder axis. The gap between the inner cylinder and the outer cylinder forms an annular cavity for adsorption catalysis chamber 1111, which is filled with adsorption catalyst 11110. The inner wall of the adsorption friction catalyst 111 is a porous plate with a pore size of 0.1 mm and a pore area ratio of 30%. The two ends of the adsorption catalytic chamber are rigid titanium metal microporous mesh with a pore size of 0.1 mm. The friction armor 1110 wrapped around the outer surface of the outer cylinder is a porous strip-shaped body that spirally surrounds the cylinder wall with the central axis of the adsorption friction catalyst 111 as the axis. The edges between the strips naturally form friction armor slots with uniform width, which are spiral friction grooves 1112. The thickness of the friction armor 1110 is 1 mm. The inner wall of the outer cylinder corresponding to the friction groove is provided with a spiral obstruction flow wing 1113 that follows the direction of the friction groove 1112. The cross section of the spiral obstruction flow wing 1113 is arc-shaped, with the concave arc direction facing the direction of the water flow source, and the width is 1 / 10 of the radial width of the adsorption catalytic chamber 1111. The locking disc 114 includes a disc center 1140 positioned in the direction of water flow source, a support ring 1141, a disc arm 1142, a locking tongue 1143, a locking cam 1144, and a locking switch 1145 positioned in the direction of water flow out. A schematic diagram of its appearance and internal structure is shown below. Figure 7The disk center 1140 is located at the center of the support ring 1141, and the latch 1143 is located inside the disk arm 1142. Multiple disk arms 1142 extend from the disk center 1140 to the support ring 1141. Multiple locking cams 1144 are provided inside the disk center 1140. Each locking cam 1144 corresponds to the extension and retraction of each latch 1143. The locking switch 1145 is connected to the locking cam 1144 to realize the rotation of the locking cam 1144. The disk center 1140 is a smooth, rigid mirror surface that can resist... The shaft needle 1102 can be used to allow the adsorption friction catalyst 111 to rotate freely around the central axis where the shaft needle 1102 is located. The latch 1143 is located inside the disc arm 1142. The rotation of the latch cam 1144 is adjusted by the latching switch 1145 to achieve the extension and retraction of the latch 1143. The tip of the latch protrudes from the outer ring of the support ring 1141. When the latching disc 114 is placed in the pipe, the latching switch 1145 is rotated, and the latch 1143 is fixedly locked against the pipe wall. The latching disc 114 is fixed inside the friction catalyst tube (10). The water flow regulator 2 includes a lotus-shaped flow nozzle 21 with its opening facing the direction of water flow, a matching walking ring 22 that can move along the direction of water flow with a guide rod 220, and a worm gear 23 that drives the walking ring. A schematic diagram of its structure is shown below. Figure 8 The lotus-shaped flow-adjusting nozzle 21 consists of multiple elastic petal-shaped guide vanes 211 converging into a tail-jet-shaped nozzle, with the direction of the tail-jet-shaped nozzle being the direction of water flow. The walking ring 22 is an annular cylinder with a circular constriction opening 221 that is wider on the outside and narrower on the inside, facing the guide vanes of the lotus-shaped flow-adjusting nozzle 211. The guide vanes 211 converge to form the tail-jet-shaped nozzle, which can extend into the constriction opening 221 of the walking ring 22. The outer wall of the walking ring 22 is provided with threads 222, which mesh with the teeth of the worm gear 23. By adjusting the worm gear, the walking ring 22 can be driven to move on the guide rod 220 through the threads. The guide vanes of the lotus-shaped flow regulator 21 extend into or pull out of the binding port 221 of the walking ring 22. By constraining and releasing the binding port, the guide vanes converge to adjust the inner diameter of the tail-shaped nozzle, thereby adjusting the water flow velocity and changing the driving force of the water flow on the front impeller 112, thus changing the rotation speed of the adsorption friction catalyst. The two ends of the worm gear 23 are sealed to the outer wall of the water flow regulator pipe through the sealing ring 231. The water flow regulator 2 is connected to the pipe using the fixing rod 24 and the large flange 25. The front end of the water flow regulator 2 is connected to the incoming water direction via the front flange 12, and the end of the adsorption friction catalyst 1 is connected to the water flow direction pipe via the rear flange 13. The preparation method of the adsorption-driven frictional catalytic pipeline water purification device 1 includes the following steps: A: Preparation method of friction catalytic tube: Take a section of titanium tube with the required inner diameter, use the rotation and lifting method to open spiral grooves on the inner wall of the tube, remove surface oil stains with 95% ethanol, clean the inner wall with dilute hydrochloric acid, wash with water until neutral, dry the water, and obtain the pretreated titanium tube. One end of the pretreated titanium tube was sealed, and a 1.5 mol / L NaOH solution was added. The tube was then sealed and heated to 200°C for hydrothermal treatment for 8 hours. After returning to room temperature, the alkaline solution was released, and the tube was washed with water until it was nearly neutral. Then, a 0.2 mol / L barium hydroxide solution was injected into the titanium tube, and the tube was sealed and heated to 180°C for 12 hours. After rinsing with deionized water, the tube was dried with 55°C dry nitrogen gas. Under nitrogen protection, the tube was heated to 450°C for 60 minutes to obtain a friction catalytic tube with a friction catalytic layer and flow grooves on the inner wall. B: Preparation method of adsorption tribocatalytic bomb: (1) Friction nail preparation method: Take a porous titanium plate with a thickness of 2 mm, a pore diameter of 0.2 mm, and a pore area accounting for 80% of the titanium plate area. Wrap it into the desired shape, immerse it in a 1 mol / L sodium hydroxide solution, react at 200℃ for 12 h, wash it with water until it is nearly neutral, then immerse it in a 0.2 mol / L barium hydroxide solution, heat it in a sealed container to 200℃, keep it at that temperature for 12 h, rinse it with deionized water, dry it at 60℃, and calcine it at 550℃ for 60 min to obtain friction armor. (2) Preparation method of adsorption catalyst: D001 macroporous strong acid styrene-based cation exchange resin was selected, and particles with a size range of 0.65-1.25 mm were screened. The resin was pretreated according to the manufacturer's standard method and converted to sodium form. It was then immersed in a saturated FeCl3 solution, stirred for 3 hours, and allowed to stand for 24 hours. Solid-liquid separation was performed, and the surface of the resin was washed with deionized water to obtain adsorbed iron resin. The adsorbed iron resin was then immersed in a sodium hydroxide solution with a pH of 11, stirred for 8 hours, and sodium hydroxide was added to maintain the pH at 11. The solution was allowed to stand for 12 hours and then dried to obtain modified iron-supported resin. The modified iron-supported resin was then immersed in a 3 mol / L potassium hydroxide solution and allowed to stand for 12 hours. The modified iron-supported resin was placed in a vacuum muffle furnace with a vacuum relative pressure not exceeding -0.09 MPa. Under continuous vacuum conditions, the muffle furnace was heated to 750°C at a rate of 2°C / min and kept in a sealed, pressurized environment for 3 hours. After cooling to room temperature, the resin was removed and washed with water until nearly neutral to obtain spherical granular adsorption catalyst. (3) Select a titanium mesh with a pore size of 0.425 mm to prepare an empty cylinder of the adsorption friction catalyst projectile of the required size. The friction shell prepared in step (1) is spirally wound and installed on the outer wall. The adsorption catalyst prepared in step (2) is filled into the adsorption catalyst cavity. The stainless steel support shaft, the water flow front drive impeller, the water flow rear drive impeller and the clamping plate are installed to obtain the adsorption friction catalyst projectile 11.

[0015] An adsorption-friction catalytic bomb is installed in a friction catalytic tube, and a water flow regulator is installed at the front end to obtain an adsorption-driven water flow friction catalytic pipeline water purification device 1.

[0016] Example 2 This embodiment describes an adsorption-driven flow-through frictional catalytic pipeline water purification device 2 and its preparation method. The structure of the water purification device 2 driven by adsorption flow and friction catalysis pipeline is the same as that in Example 1. The difference is that the inner wall of the adsorption friction catalyst 111 is a porous plate with a pore diameter of 2 mm and a pore area ratio of 60%. The two ends of the adsorption catalytic chamber are rigid titanium metal microporous mesh with a pore diameter of 2 mm. The friction armor 1110 wrapped around the outer surface of the outer cylinder is a porous strip. It spirally surrounds the cylinder wall with the central axis of the adsorption friction catalyst 111 as the axis. The edge between the strips naturally forms a friction armor slit with a uniform width, which is a spiral friction groove 1112. The thickness of the friction armor 1110 is 5 mm. The inner wall of the outer cylinder corresponding to the friction groove is provided with a spiral obstruction flow wing 1113 that follows the direction of the friction groove 1112. The cross section of the spiral obstruction flow wing 1113 is arc-shaped, with the concave arc direction facing the water flow source direction. The width is 1 / 5 of the radial width of the adsorption catalytic chamber 1111. Its preparation method is as follows: A: Preparation method of friction catalytic tube: Take a section of titanium tube with the required inner diameter, use the rotation and lifting method to open spiral grooves on the inner wall of the tube, remove surface oil stains with 95% ethanol, clean the inner wall with dilute hydrochloric acid, wash with water until neutral, dry the water, and obtain the pretreated titanium tube. One end of the pretreated titanium tube was sealed, and a 1 mol / L NaOH solution was added. The tube was then heated to 200°C and kept at that temperature for 10 hours. After returning to room temperature, the alkaline solution was released, and the tube was washed with water until it was nearly neutral. Then, a 0.1 mol / L barium hydroxide solution was injected into the titanium tube, and the tube was heated to 200°C and kept at that temperature for 8 hours. After rinsing with deionized water, the tube was dried with 60°C dry nitrogen gas. Under nitrogen protection, the tube was heated to 500°C for 60 minutes to obtain a friction catalytic tube with a friction catalytic layer and flow-guiding grooves on the inner wall. B: Preparation method of adsorption tribocatalytic bomb: (1) Friction nail preparation method: Take a porous titanium plate with a thickness of 2 mm, a pore diameter of 0.2 mm, and a pore area accounting for 60% of the titanium plate area. Wrap it into the desired shape, immerse it in a 0.5 mol / L sodium hydroxide solution, react it at 200℃ for 6 h, wash it with water until it is nearly neutral, then immerse it in a 0.2 mol / L barium hydroxide solution, heat it in a sealed container to 200℃, keep it at that temperature for 8 h, rinse it with deionized water, dry it at 60℃, and calcine it at 500℃ for 60 min to obtain friction armor. (2) Preparation method of adsorption catalyst: D001 macroporous strong acid styrene-based cation exchange resin was selected, and particles with a size range of 0.65-1.25 mm were screened. The resin was pretreated according to the manufacturer's standard method and converted to sodium form. It was then immersed in a saturated FeCl3 solution, stirred for 2 hours, and allowed to stand for 24 hours. Solid-liquid separation was performed, and the surface of the resin was washed with deionized water to obtain adsorbed iron resin. The adsorbed iron resin was then immersed in a sodium hydroxide solution with a pH of 10, stirred for 8 hours, and sodium hydroxide was added to maintain the pH at 10. The solution was allowed to stand for 10 hours and then dried to obtain modified iron-supported resin. The modified iron-supported resin was then immersed in a 2 mol / L potassium hydroxide solution and allowed to stand for 10 hours. The modified iron-supported resin was placed in a vacuum muffle furnace with a vacuum relative pressure not exceeding -0.09 MPa. Under continuous vacuum conditions, the muffle furnace was heated to 450°C at a rate of 1°C / min and kept sealed and pressurized for 3 hours. After cooling to room temperature, the resin was removed and washed with water until nearly neutral to obtain spherical granular adsorption catalyst. (3) Select a porous titanium plate with a pore size of 0.425 mm to prepare an empty cylinder of the adsorption friction catalyst projectile of the required size. The friction shell prepared in step (1) is spirally wound and installed on the outer wall. The adsorption catalyst prepared in step (2) is filled into the adsorption catalyst cavity. The stainless steel support shaft, the water flow front drive impeller, the water flow rear drive impeller and the clamping plate are installed to obtain the adsorption friction catalyst projectile 11.

[0017] An adsorption friction catalytic bomb is installed in a friction catalytic tube, and a water flow regulator is installed at the front end to obtain an adsorption flow water driven friction catalytic pipeline water purification device 2.

[0018] Example 3 This embodiment describes an adsorption-driven flow-through frictional catalytic pipeline water purification device 3 and its preparation method. The structure of the water purification device 3 driven by adsorption flow and friction catalysis pipeline is the same as that in Example 1. The difference is that the inner wall of the adsorption friction catalyst 111 is a porous plate with a pore diameter of 1 mm and a pore area ratio of 50%. The two ends of the adsorption catalytic chamber are rigid titanium metal microporous mesh with a pore diameter of 1 mm. The friction armor 1110 wrapped around the outer surface of the outer cylinder is a porous strip. It spirally surrounds the cylinder wall with the central axis of the adsorption friction catalyst 111 as the axis. The edge between the strips naturally forms a friction armor slit with a uniform width, which is a spiral friction groove 1112. The thickness of the friction armor 1110 is 3 mm. The inner wall of the outer cylinder corresponding to the friction groove is provided with a spiral obstruction flow wing 1113 that follows the direction of the friction groove 1112. The cross section of the spiral obstruction flow wing 1113 is arc-shaped, with the concave arc direction facing the water flow source direction. The width is 1 / 8 of the radial width of the adsorption catalytic chamber 1111. Its preparation method is as follows: A: Preparation method of friction catalytic tube: Take a section of titanium tube with the required inner diameter, use the rotation and lifting method to open spiral grooves on the inner wall of the tube, remove surface oil stains with 95% ethanol, clean the inner wall with dilute hydrochloric acid, wash with water until neutral, dry the water, and obtain the pretreated titanium tube. One end of the pretreated titanium tube was sealed, and a 1.5 mol / L NaOH solution was added. The tube was then sealed and heated to 180°C for hydrothermal treatment for 12 hours. After returning to room temperature, the alkaline solution was released, and the tube was washed with water until it was nearly neutral. Then, a 0.05 mol / L barium hydroxide solution was injected into the titanium tube, and the tube was sealed and heated to 180°C for 12 hours. After rinsing with deionized water, the tube was dried with 50°C dry nitrogen gas. Under nitrogen protection, the tube was heated to 450°C for 60 minutes to obtain a friction catalytic tube with a friction catalytic layer and flow grooves on the inner wall. B: Preparation method of adsorption tribocatalytic bomb: (1) Friction nail preparation method: Take a porous titanium plate with a thickness of 1 mm, a pore diameter of 0.05 mm, and a pore area accounting for 80% of the titanium plate area. Wrap it into the desired shape, immerse it in a 1 mol / L sodium hydroxide solution, react it at 190℃ for 10 h, wash it with water until it is nearly neutral, then immerse it in a 0.2 mol / L barium hydroxide solution, heat it in a sealed container to 190℃, keep it at that temperature for 10 h, rinse it with deionized water, dry it at 50℃, and calcine it at 550℃ for 30 min to obtain friction armor. (2) Preparation method of adsorption catalyst: D001 macroporous strong acid styrene-based cation exchange resin was selected, and particles with a size range of 0.65-1.25 mm were screened. The resin was pretreated according to the manufacturer's standard method and converted to sodium form. It was then immersed in a saturated FeCl3 solution, stirred for 1 hour, and allowed to stand for 24 hours. Solid-liquid separation was performed, and the surface of the resin was washed with deionized water to obtain adsorbed iron resin. The adsorbed iron resin was then immersed in a sodium hydroxide solution with a pH of 11, stirred for 8 hours, and sodium hydroxide was added to maintain the pH at 11. The solution was allowed to stand for 12 hours and then dried to obtain modified iron-supported resin. The modified iron-supported resin was then immersed in a 2 mol / L potassium hydroxide solution and allowed to stand for 9 hours. The modified iron-supported resin was placed in a vacuum muffle furnace with a vacuum relative pressure not exceeding -0.09 MPa. Under continuous vacuum conditions, the muffle furnace was heated to 750°C at a rate of 2°C / min, and the reaction was carried out under sealed pressure for 2 hours. After cooling to room temperature, the resin was removed and washed with water until nearly neutral to obtain spherical granular adsorption catalyst. (3) Select a titanium mesh with a pore size of 0.425 mm to prepare an empty cylinder of the adsorption friction catalyst projectile of the required size. The friction shell prepared in step (1) is spirally wound and installed on the outer wall. The adsorption catalyst prepared in step (2) is filled into the adsorption catalyst cavity. The stainless steel support shaft, the water flow front drive impeller, the water flow rear drive impeller and the clamping plate are installed to obtain the adsorption friction catalyst projectile 11.

[0019] An adsorption friction catalytic bomb is installed in a friction catalytic tube, and a water flow regulator is installed at the front end to obtain an adsorption flow water driven friction catalytic pipeline water purification device 3.

[0020] Example 4 This embodiment describes an adsorption-driven flow-through frictional catalytic pipeline water purification device 4 and its preparation method. The structure of the water purification device 4 driven by adsorption flow and friction catalysis pipeline is the same as that in Example 1. The difference is that the inner wall of the adsorption friction catalyst 111 is a porous plate with a pore size of 0.5 mm and a pore area ratio of 40%. The two ends of the adsorption catalytic chamber are rigid titanium metal microporous mesh with a pore size of 0.5 mm. The friction armor 1110 wrapped around the outer surface of the outer cylinder is a porous strip. It spirally surrounds the cylinder wall with the central axis of the adsorption friction catalyst 111 as the axis. The edges between the strips naturally form friction armor slots with uniform width, which are spiral friction grooves 1112. The thickness of the friction armor 1110 is 2 mm. The inner wall of the outer cylinder corresponding to the friction groove is provided with a spiral obstruction flow wing 1113 that follows the direction of the friction groove 1112. The cross section of the spiral obstruction flow wing 1113 is arc-shaped, with the concave arc direction facing the water flow source direction. The width is 1 / 8 of the radial width of the adsorption catalytic chamber 1111. Its preparation method is as follows: A: Preparation method of friction catalytic tube: Take a section of titanium tube with the required inner diameter, use the rotation and lifting method to open spiral grooves on the inner wall of the tube, remove surface oil stains with 95% ethanol, clean the inner wall with dilute hydrochloric acid, wash with water until neutral, dry the water, and obtain the pretreated titanium tube. The pretreated titanium tube was sealed at one end, filled with 2 mol / L NaOH solution, sealed, heated to 180℃ and kept at that temperature for 12 hours, then returned to room temperature, the alkaline solution was released, and the tube was washed with water until it was nearly neutral. Then, 0.05 mol / L barium hydroxide solution was injected into the titanium tube, sealed and heated to 180℃, and kept at that temperature for 12 hours. After rinsing with deionized water, the tube was dried with 50℃ dry nitrogen gas. Under nitrogen protection, the tube was heated to 450℃ for 60 minutes to obtain a friction catalytic tube with a friction catalytic layer and flow grooves on the inner wall. B: Preparation method of adsorption tribocatalytic bomb: (1) Friction nail preparation method: Take a porous titanium plate with a thickness of 0.5 mm, a pore diameter range of 0.01 mm, and a pore area accounting for 50% of the titanium plate area. Wrap it into the desired shape, immerse it in a 0.1 mol / L sodium hydroxide solution, react it at 180 °C for 6 h, wash it with water until it is nearly neutral, then immerse it in a 0.05 mol / L barium hydroxide solution, heat it in a sealed container to 180 °C, keep it at that temperature for 12 h, rinse it with deionized water, dry it at 50 °C, and calcine it at 450 °C for 60 min to obtain friction armor. (2) Preparation method of adsorption catalyst: D001 macroporous strong acid styrene-based cation exchange resin was selected, and particles with a size range of 0.65-1.25 mm were screened. The resin was pretreated according to the manufacturer's standard method and converted to sodium form. It was then immersed in a saturated FeCl3 solution, stirred for 2 hours, and allowed to stand for 16 hours. Solid-liquid separation was performed, and the surface of the resin was washed with deionized water to obtain adsorbed iron resin. The adsorbed iron resin was then immersed in a sodium hydroxide solution with a pH of 11, stirred for 8 hours, and sodium hydroxide was added to maintain the pH at 11. The solution was allowed to stand for 10 hours and then dried to obtain modified iron-supported resin. The modified iron-supported resin was then immersed in a 3 mol / L potassium hydroxide solution and allowed to stand for 10 hours. The modified iron-supported resin was placed in a vacuum muffle furnace with a vacuum relative pressure not exceeding -0.09 MPa. Under continuous vacuum conditions, the muffle furnace was heated to 600°C at a rate of 1°C / min, and the reaction was carried out under sealed pressure for 3 hours. After cooling to room temperature, the resin was removed and washed with water until nearly neutral to obtain spherical granular adsorption catalyst. (3) Select a porous titanium plate with a pore size of 0.425 mm to prepare an empty cylinder of the adsorption friction catalyst projectile of the required size. The friction shell prepared in step (1) is spirally wound and installed on the outer wall. The adsorption catalyst prepared in step (2) is filled into the adsorption catalyst cavity. The stainless steel support shaft, the water flow front drive impeller, the water flow rear drive impeller and the clamping plate are installed to obtain the adsorption friction catalyst projectile 11.

[0021] An adsorption-friction catalytic bomb is installed in a friction catalytic tube, and a water flow regulator is installed at the front end to obtain an adsorption-driven friction catalytic pipeline water purification device 4.

[0022] Comparative Example 1 If the friction armor is made directly from porous titanium plates, the friction purification performance will be relatively low.

[0023] Comparative Example 2 If the device lacks a water flow regulator 2, the purification effect will be unstable when there are large changes in water flow and water pressure.

[0024] Comparative Example 3 If the adsorption catalyst 11110 of the device is replaced with a macroporous cation exchange resin, it will have no adsorption effect on typical PFAS and the friction purification efficiency will be low.

[0025] Application examples This application example demonstrates the effectiveness of a water sample treatment device that utilizes adsorption-driven water flow to drive a frictional catalytic pipeline water purification system. Water samples were treated using the apparatus described in Examples 1-4, with a water pump circulating to simulate a tap water supply pipeline. Heavy metals were determined using atomic absorption spectrophotometry according to the methods specified in "GB 5749-2022 Standard for Drinking Water Quality" and "GB / T 5750.6-2023 Standard Examination Methods for Drinking Water Part 6: Metals and Metalloids". Disinfection byproducts were determined using gas chromatography according to "GB / T 5750.10-2023 Standard Examination Methods for Drinking Water Part 10: Disinfection Byproducts". Perfluorooctanoic acid (PFOA) and perfluorooctyl sulfonic acid (PFOS) were determined using high-performance liquid chromatography-triple quadrupole mass spectrometry (HPLC-MS / MS) according to "Water Quality - Determination of Perfluorooctyl Sulfonic Acid and Perfluorooctanoic Acid and Their Salts - Isotope Dilution - Liquid Chromatography-Triple Quadrupole Mass Spectrometry (HJ 1333—2023)". The water treatment effects were compared. Figure 9 .

[0026] pass Figure 9 As can be seen, this invention exhibits excellent water purification performance. In particular, after purification, the concentration of PFAS in the water is below the detection limit, and heavy metals and disinfection byproducts are also undetectable. The water purification device of this invention boasts superior performance, consumes no energy or reagents, has minimal impact on the water supply flow, and maintains stable performance.

Claims

1. A water purification device for adsorption-driven frictional catalysis pipelines, characterized in that, The water purification device for the adsorption flow-driven friction catalytic pipeline includes an adsorption friction catalyst (1) and a water flow regulator (2), which are connected in series. The water flow regulator (2) is located at one end in the direction of incoming water. The adsorption friction catalyst (1) includes a friction catalyst tube (10) and an adsorption friction catalyst bomb (11) sleeved inside the friction catalyst tube (10); the adsorption friction catalyst bomb (11) rotates axially under the drive of water flow in the tube, and the outer wall of the adsorption friction catalyst bomb (11) is frictionally matched with the inner wall of the friction catalyst tube (10); The water flow regulator (2) includes a lotus-shaped nozzle (21), a swiveling ring (22) that matches the tail nozzle of the lotus-shaped nozzle (21), and a worm gear (23) that drives the swiveling ring.

2. The water purification device for adsorption-driven frictional catalysis pipelines according to claim 1, characterized in that, The inner wall of the friction catalytic tube (10) is provided with a friction catalytic layer (100), and the friction catalytic layer (100) is provided with a guide groove (101) spirally surrounding the friction catalytic tube (10) along the axial direction.

3. The water purification device for adsorption-driven frictional catalysis pipelines according to claim 1, characterized in that, The adsorption friction catalyst bomb (11) includes a supporting central shaft (110), an adsorption friction catalyst body (111), a water flow front drive impeller (112), a water flow rear drive impeller (113), and a retaining plate (114). The supporting central shaft (110) is located at the axis of the hollow cylindrical adsorption friction catalyst body (111) and is supported and fixed to the inner wall of the adsorption friction catalyst body (111) by multiple brackets (1101). A water flow front drive impeller is provided at the water flow direction end of the supporting central shaft (110). (112) A water flow drive impeller (113) is provided at one end of the supporting shaft rod in the direction of water flow. After the supporting shaft rod (110) passes through the water flow drive impeller (113), a sharp shaft needle (1102) is formed at the end. The tip of the shaft needle (1102) is placed on the center of the clamping disk (114) fixed in the friction catalytic tube (10) at the end of the water flow direction. This enables the water flow to drive the adsorption friction catalytic bomb (11) to rotate along the supporting shaft rod (110) with the shaft needle (1102) as support.

4. The water purification device for adsorption-driven frictional catalysis pipelines according to claim 3, characterized in that, The adsorption friction catalyst (111) is a hollow cylinder with a central axis formed by stacking a porous inner cylinder and a porous outer cylinder on the same axis. The outer surface of the outer cylinder is spirally wound with a porous strip-shaped friction armor (1110) along the cylinder axis. The gap between the inner cylinder and the outer cylinder forms an annular cavity, which is the adsorption catalyst cavity (1111). The adsorption catalyst cavity (1111) is filled with an adsorption catalyst (11110).

5. The water purification device for adsorption-driven frictional catalysis pipelines according to claim 4, characterized in that, The inner cylinder of the adsorption friction catalyst (111) is a porous plate with a pore size of 0.1-2 mm and a pore area ratio of 30-60%. The two ends of the adsorption catalyst cavity (1111) are rigid conductive metal microporous meshes with a pore size of 0.1-2 mm. The friction armor (1110) wrapped around the outer surface of the outer cylinder is a porous strip. It spirally surrounds the cylinder wall with the central axis of the adsorption friction catalyst (111) as the axis. The edges between the strips naturally form friction armor slits with uniform width, which are spiral friction grooves (1112). The thickness of the friction armor (1110) is 1-5 mm. The inner wall of the outer cylinder corresponding to the friction groove is provided with a spiral obstruction flow wing (1113) that follows the direction of the friction groove (1112). The cross section of the spiral obstruction flow wing (1113) is arc-shaped, with the concave arc direction facing the direction of the water flow source. The width is 1 / 5-1 / 10 of the radial width of the adsorption catalyst cavity (1111).

6. The water purification device for adsorption-driven frictional catalysis pipelines according to claim 3, characterized in that, The aforementioned locking disc (114) includes a disc center (1140) disposed in the direction of water flow source, a support ring (1141), a disc arm (1142), a locking tongue (1143), a locking cam (1144), and a locking switch (1145) in the direction of water flow out. The disc center (1140) is disposed at the center of the support ring (1141), the locking tongue (1143) is disposed inside the disc arm (1142), and multiple disc arms (1142) extend from the disc center (1140) to the support ring (1141). Multiple locking cams (1144) are disposed inside the disc center (1140), and each locking cam (1144) corresponds to the extension and retraction of each locking tongue (1143). The locking switch (1145) is connected to the locking cam (1143). 1144), to realize the rotation of the locking cam (1144); the disk center (1140) is a smooth rigid mirror surface, which can resist the shaft needle (1102) and realize the free rotation of the adsorption friction catalyst (111) around the central axis where the shaft needle (1102) is located. The locking tongue (1143) is located inside the disk arm (1142). The rotation of the locking cam (1144) is adjusted by the locking switch (1145) to realize the extension and retraction of the locking tongue (1143). The tip of the tongue (1143) protrudes out of the outer ring of the support ring (1141). When the locking disk (114) is placed in the pipe, the locking switch (1145) is rotated, the locking tongue (1143) is fixedly locked in the pipe wall, and the locking disk (114) is fixed in the pipe of the friction catalyst tube (10).

7. The water purification device for adsorption-driven frictional catalysis pipelines according to claim 1, characterized in that, The lotus-shaped flow regulator (2) in the water flow regulator (2) is composed of multiple elastic petal-shaped guide vanes (211) that converge into a tail-spray-shaped nozzle, wherein the direction of the tail-spray-shaped nozzle is the direction of water flow; the walking ring (22) is an annular cylinder, and the side facing the guide vanes (211) of the lotus-shaped flow regulator (21) is a circular constriction opening (221) that is wider on the outside and narrower on the inside. The guide vanes (211) converge into a tail-spray-shaped nozzle that can extend into the constriction opening (221) of the walking ring (22). The outer wall of the walking ring (22) is provided with threads (222) that mesh with the gear teeth of the worm gear (23); by adjusting the worm gear, the walking ring (22) is driven by the threads to move along the guide rod (221). 20) Move upwards, so that the tail-spray nozzle formed by the guide plate of the lotus flow regulating nozzle (21) extends into or pulls out of the binding port (221) of the walking ring (22). By binding and releasing the binding port (221), the guide plate (211) converges the size of the inner diameter of the tail-spray nozzle, thereby adjusting the water flow velocity and changing the driving force of the water flow on the front drive impeller (112) to change the rotation speed of the adsorption friction catalyst. The two ends of the worm gear (23) are sealed to the outer wall of the water flow regulator pipe through the sealing ring (231). The water flow regulator (2) is connected to the pipe by the fixing rod (24) and the large flange (25).

8. The water purification device for adsorption-driven frictional catalysis pipelines according to claim 1, characterized in that, The front end of the water flow regulator (2) is connected to the incoming water direction via the front flange (12), and the end of the adsorption friction catalyst (1) is connected to the water flow direction pipe via the rear flange (13).

9. The preparation method of the adsorption-driven frictional catalytic pipeline water purification device according to any one of claims 1-8, characterized in that, This includes the preparation of the triboelectric catalytic tube (10) and the adsorption triboelectric catalytic bomb (11), specifically... Includes the following steps: A: Preparation method of friction catalytic tube (10): Take a section of titanium tube with the required inner diameter, use the rotation and lifting method to open spiral grooves on the inner wall of the tube, remove surface oil stains with alcohol organic solvents, clean the inner wall with dilute hydrochloric acid, wash with water until neutral, dry the water, and obtain the pretreated titanium tube. After pretreatment, one end of the titanium tube is sealed and filled with 1-2 mol / L NaOH solution. The tube is then heated to 180-200℃ and kept at that temperature for 6-12 hours. After returning to room temperature, the alkaline solution is released and the tube is washed with water until it is nearly neutral. Then, 0.05-0.2 mol / L barium hydroxide solution is injected into the titanium tube. The tube is then heated to 180-200℃ and kept at that temperature for 8-12 hours. After rinsing with deionized water, the tube is dried with 50-60℃ dry nitrogen gas. Under nitrogen protection, the tube is heated to 450-550℃ for 30-60 minutes to obtain a friction catalytic tube (10) with a friction catalytic layer (100) and a flow channel (101) on the inner wall. B: Preparation method of adsorption triboelectric catalyst (11): (1) Friction nail preparation method: Take a porous titanium plate with a thickness of 0.5-2 mm, a pore size of 0.01-0.2 mm, and a pore area accounting for 50-80% of the titanium plate area. Wind it into the desired shape, immerse it in a 0.1-1 mol / L sodium hydroxide solution, and react it at 180-200℃ for 6-12 h. Wash it with water until it is nearly neutral, then immerse it in a 0.05-0.2 mol / L barium hydroxide solution, heat it in a sealed container to 180-200℃, and keep it at that temperature for 8-12 h. After rinsing it with deionized water, dry it at 50-60℃, and calcine it at 450-550℃ for 30-60 min to obtain friction armor. (2) Preparation method of adsorption catalyst: Macroporous cation exchange resin pretreated according to conventional methods is immersed in a solution containing iron ions, stirred for 1-3 hours, allowed to stand for 12-24 hours, and then separated into solid and liquid components. After rinsing the surface of the resin with deionized water to remove iron ions, it is then immersed in a sodium hydroxide solution with a pH of 10-11, stirred for 6-8 hours, and sodium hydroxide is added to maintain the pH of the solution at 10-11. The solution is allowed to stand for 8-12 hours and then dried to obtain modified iron-supported resin. The modified iron-supported resin is then immersed in a 1-3 mol / L potassium hydroxide solution and allowed to stand for 8-12 hours. The modified iron-supported resin is then placed in a vacuum muffle furnace with a vacuum relative pressure not exceeding -0.09 MPa. Under continuous vacuum conditions, the muffle furnace is heated to 450-750℃ at a rate of 1-2℃ / min and kept in a sealed, pressurized environment for 1-3 hours. After cooling to room temperature inside the furnace, the resin is removed and washed with water until nearly neutral to obtain spherical granular adsorption catalyst. (3) Select a metal mesh and a porous metal plate with a pore size smaller than that of the adsorption catalyst to prepare an empty cylinder of the required size of the adsorption friction catalyst projectile. The friction shell prepared in step (1) is spirally wound and installed on the outer wall. The adsorption catalyst prepared in step (2) is filled into the adsorption catalyst cavity. The supporting central shaft, the water flow front drive impeller, the water flow rear drive impeller and the clamping plate are installed to obtain the adsorption friction catalyst projectile (11).

10. The application of the adsorption-driven friction catalytic pipeline water purification device according to any one of claims 1-8, used to be placed in a water pipeline to remove one or more of PFAS, heavy metals or disinfection byproducts from the water flowing in the pipeline.

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