Efficient mass transfer ozone catalysis ceramic membrane assembly

Abstract

An efficient mass transfer ozone catalysis ceramic membrane assembly relates to the technical field of water treatment and comprises a frame and a baffle fixed on the side surface of the frame, an ozone diffusion chamber and an ozone contact chamber which are communicated up and down are arranged in the frame, and an ozone distribution plate for dividing the ozone diffusion chamber into an upper part and a lower part is arranged in the ozone diffusion chamber; a plurality of distribution holes penetrating through a plate body are formed in the ozone distribution plate, and a microporous pipe is arranged below the ozone distribution plate; a plurality of catalytic ceramic membranes are arranged in the ozone contact chamber, and a water outlet of each catalytic ceramic membrane penetrates out of the ozone contact chamber. The method has the outstanding effects of catalyzing ozone into a large number of hydroxyl free radicals and further oxidizing pollutants in water.

Description

Technical Field

[0001] This utility model relates to a water filtration and purification device in the field of water treatment technology, specifically, to an ozone ceramic membrane module. Background Technology

[0002] Patent document CN206343080U discloses a water purification device entitled "Flat-Sheet Ceramic Membrane Module". To address the shortcomings of existing flat-sheet ceramic membrane modules, such as poor overall structural strength and heavy weight, the structure has been improved. The flat-sheet ceramic membrane module includes a base with two frames mounted on it. Flat-sheet membranes are installed within each frame. Water outlets are distributed at the top of the flat-sheet membranes, and each outlet is connected to a water outlet pipe via a guide pipe located between the two frames. The base is a single-piece design and contains an aeration device. The water outlet pipe is a separate type. An ultraviolet baffle is installed at the top of each frame. Lifting lugs are located at both ends of the top of the frames, with corresponding lifting devices. Membrane baffles are installed on both sides of the flat-sheet membrane. These membrane baffles are separate types, each with ribs, and are secured to the frame using quick-release plastic clips.

[0003] The technical solution disclosed in CN206343080U has the following shortcomings: it uses air for aeration and ordinary ceramic membrane for filtration, so it can only perform physical filtration of raw water and the purification effect is not very ideal. In addition, the membrane baffles are connected in sections and fixed by buckles, which means they are not sealed, and aeration will inevitably leak out from the gaps. Summary of the Invention

[0004] The main objective of this invention is to provide a high-efficiency mass transfer ozone catalytic ceramic membrane module.

[0005] The high-efficiency mass transfer ozone catalytic ceramic membrane assembly provided for this purpose includes a frame and a baffle fixed to the side of the frame. The frame has two interconnected spaces: a lower space is an ozone diffusion chamber, and an upper space is an ozone contact chamber. An ozone distribution plate is provided in the ozone diffusion chamber to divide the ozone diffusion chamber into upper and lower parts. The ozone distribution plate has multiple distribution holes penetrating the plate body, and a microporous tube is provided below the ozone distribution plate. Multiple catalytic ceramic membranes are provided in the ozone contact chamber, and the outlet of each catalytic ceramic membrane extends out of the ozone contact chamber.

[0006] As can be seen from the above scheme, this utility model uses ozone for aeration and diffuses it in the ozone diffusion chamber through microporous tubes and ozone distribution plates, so that ozone microbubbles enter the ozone contact chamber in a relatively uniform distribution state. Moreover, the ozone contact chamber is equipped with multiple catalytic ceramic membranes. Taking advantage of the relatively slow mass transfer rate of ozone gas in the liquid phase, this solves the problems that factors such as bubble size and distribution affect the mass transfer effect of ozone during mass transfer at the gas-liquid interface and during the ozone release process caused by bubble collapse. On the other hand, the use of catalytic ceramic membranes can convert a large amount of ozone into hydroxyl radicals, thereby oxidizing and degrading pollutants. This not only improves the physical filtration efficiency, but also produces a catalytic oxidation effect on pollutants in water compared with existing technologies.

[0007] A further embodiment involves the microporous tube being one or more straight tubes, horizontally positioned within the ozone diffusion chamber, the ozone distribution plate being a flat plate, and the distribution holes being circular or strip-shaped holes. The advantage of this embodiment is its relatively simple structure and relatively low manufacturing cost.

[0008] Another further embodiment is that the microporous tube is one or more straight tubes, horizontally arranged in the ozone diffusion chamber, the ozone distribution plate is a convex or concave tile-shaped plate, and the distribution holes are round or strip-shaped holes. The advantage of this embodiment is that it allows ozone microbubbles in the ozone diffusion chamber to pass relatively uniformly through each ozone distribution hole.

[0009] Another further embodiment involves the microporous tube being one or more curved tubes, horizontally positioned within the ozone diffusion chamber, with the ozone distribution plate being a flat plate and the distribution holes being circular or strip-shaped holes. The advantage of this embodiment is that it allows for a relatively uniform distribution of ozone microbubbles at the horizontal plane where the microporous tube is located.

[0010] A further embodiment involves the baffle comprising a first baffle and a second baffle. The first baffle is sealed to the frame, forming the peripheral wall of the ozone contact chamber, and the second baffle is sealed to the frame, forming the peripheral wall of the ozone diffusion chamber. The advantage of this embodiment is that the baffle is sealed to the frame, creating an ozone diffusion chamber and an ozone contact chamber that are sealed on all sides, with only the top and bottom openings. The connection between the two chambers is also sealed, ensuring that ozone microbubbles only pass upwards through the ozone distribution plate within the ozone diffusion chamber and cannot leak out through the peripheral wall of the ozone diffusion chamber. After passing through the ozone distribution plate, they can only pass upwards through the ozone contact chamber and cannot leak out through the peripheral wall of the ozone contact chamber. During this process, they fully contact the catalytic ceramic membrane, thus relatively improving the utilization rate of ozone.

[0011] A further option is to locate the outlet at the top and / or bottom of the catalytic ceramic membrane. When the length-to-width ratio of the catalytic ceramic membrane is small, the outlet can be located at the top of the membrane. The advantage of this option is that the water drawn from the membrane has relatively sufficient contact with the ozone microbubbles. Alternatively, the outlet can be located at the bottom of the membrane. This option has the advantage of relatively reducing the rising speed of the ozone microbubbles in the ozone contact chamber, thereby improving the utilization rate of ozone.

[0012] A further option is to connect each of the aforementioned outlets to the main outlet pipe. The advantage of this approach is that it increases the integration of the high-efficiency mass transfer ozone catalytic ceramic membrane module, making on-site installation and use more convenient.

[0013] Another further option is to have one end of the microporous tube sealed and the other end open. The advantage of this option is its greater adaptability to on-site installation. Attached Figure Description

[0014] Figure 1 This is the front view of the first embodiment;

[0015] Figure 2 yes Figure 1 The left view;

[0016] Figure 3 yes Figure 1 The right view;

[0017] Figure 4 yes Figure 1 A bottom view;

[0018] Figure 5 yes Figure 1 Top view;

[0019] Figure 6 yes Figure 1 A-A sectional view;

[0020] Figure 7 yes Figure 1 A three-dimensional view, in which the first membrane baffle and the second membrane baffle are partially sectional;

[0021] Figure 8 This is a structural diagram of a catalytic ceramic membrane in the first embodiment;

[0022] Figure 9 yes Figure 8 The right view;

[0023] Figure 10 yes Figure 8 A magnified view of part B;

[0024] Figure 11 yes Figure 9 A magnified view of part C.

[0025] The following is a detailed description of the embodiments of this utility model and their accompanying drawings. Detailed Implementation

[0026] This utility model is an improvement based on the existing technology CN206343080U. The following only describes the improvements in detail. Structures and components that are the same as those in the existing technology can be implemented with reference to the existing technology and related technical specifications and manuals.

[0027] First Embodiment

[0028] See Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a front view of the high-efficiency mass transfer ozone catalytic ceramic membrane module 100. Figure 2 This is a left view of the high-efficiency mass transfer ozone catalytic ceramic membrane module 100. Figure 3 This is a right view of the high-efficiency mass transfer ozone catalytic ceramic membrane module 100, reflecting its external structure. The high-efficiency mass transfer ozone catalytic ceramic membrane module 100 has a rectangular shape. The shell consists of a frame 1 and baffles on its four sides. The frame 1 is welded from square tubes, angle brackets, and plates, and has lifting lugs at the top. A square tube 11, horizontally arranged around the frame 1, is located slightly below the center of the frame 1. The baffle above the square tube 11 is the first baffle 21, and the baffle below the square tube 11 is the second baffle 22. The front and rear first baffles 21, being wider, are reinforced with multiple outwardly protruding, horizontally arranged reinforcing ribs 211. The left and right first baffles 21, being narrower, are flat. The left and right ends of each first baffle 21 are welded to the columns of the frame 1 to achieve a sealed connection, while the lower end is welded to the square tube 11 to achieve a sealed connection. The front and rear second baffles 22 and the left and right second baffles 22 are all flat plates. The left and right ends of each second baffle 22 are welded to the columns of the frame 1 to meet the requirements of a sealed connection, while the upper end is welded to the square tube 11 to achieve a sealed connection. In this way, the interior of the frame 1 is divided into two interconnected spaces by the square tube 11. The lower space is the ozone diffusion chamber, and the upper space is the ozone contact chamber. On the left side of the high-efficiency mass transfer ozone catalytic ceramic membrane module 100, an ozone transmission pipe 31 is also fixed outside the baffle. The upper end of the ozone transmission pipe 31 is connected to the ozone generator.

[0029] See Figure 4 , Figure 4 This is a bottom view of the high-efficiency mass transfer ozone catalytic ceramic membrane module 100. Below the horizontally arranged square tube 11 is the ozone diffusion chamber 5, which is... Figure 4The opening at the lower end of the ozone diffusion chamber 5 is visible, and through this opening, one can see the ozone distribution plate 12 installed inside the ozone diffusion chamber 5, as well as the microporous tube 32 installed below the ozone distribution plate 12. The right end of the microporous tube 32 is a sealed end, and the left end is an open end. The open end is connected to the ozone transmission tube 31 through a connector.

[0030] See Figure 5 , Figure 5 This is a top view of the high-efficiency mass transfer ozone catalytic ceramic membrane module 100. Above the horizontally arranged square tube 11 is the ozone contact chamber 6. Figure 5 The opening at the top of the ozone contact chamber 6 is visible, and multiple catalytic ceramic membranes 4 installed inside the ozone contact chamber 6 can be seen through this opening.

[0031] See Figure 5 and combined Figure 2 Each catalytic ceramic membrane 4 has an outlet 41 at its top and bottom, and all outlets 41 extend out of the ozone contact chamber 6 and are connected to the main outlet pipe. It should be noted that the main outlet pipe is omitted in all the accompanying drawings of the embodiment. When the high-efficiency mass transfer ozone catalytic ceramic membrane assembly 100 is in use, the main outlet pipe is connected to the suction pump.

[0032] See Figure 6 and Figure 7 , Figure 6 This is a cross-sectional view of a high-efficiency mass transfer ozone catalytic ceramic membrane module 100. Figure 7 These are perspective views of the high-efficiency mass transfer ozone catalytic ceramic membrane module 100. The two views provide a clearer view of the internal structure of the module. Inside the frame 1, which is composed of profiles, there are four square tubes 11 arranged around the perimeter. The space above the square tubes 11 is the ozone contact chamber 6, and the space below is the ozone diffusion chamber 5. Inside the ozone diffusion chamber 5, there is an ozone distribution plate 12 that divides the chamber into upper and lower parts. Figure 4 and Figure 7 As can be seen, the ozone distribution plate 12 has multiple circular distribution holes that penetrate the plate body. Below the ozone distribution plate 12, there is a microporous tube 32. The microporous tube 32 refers to the tube wall with micropores evenly distributed along the axial and circumferential directions. The pore diameter of the micropores can be between 5 micrometers and 50 micrometers. The micropores allow extremely small ozone microbubbles to enter the water after the ozone gas passes through. In contrast, the existing aeration tubes, which use air aeration, usually have a pore diameter between 0.5 mm and 2 mm.

[0033] See Figures 8 to 11This is a set of diagrams reflecting the structure of the catalytic ceramic membrane 4. The catalytic ceramic membrane 4 is a sheet-like body. Water-collecting plates 42 are provided at both ends of the length direction of the sheet-like body, namely the top and bottom. One end of the water-collecting plate 42 is provided with a water outlet 41. Under the action of the suction pump, raw water enters from the surface of the catalytic ceramic membrane 4 and is sucked out from the water outlet 41.

[0034] Second Embodiment

[0035] The following only describes the differences between this example and the first embodiment; see [link to example]. Figure 6 In the first embodiment, the ozone distribution plate 12 is a flat plate, while in this example, the ozone distribution plate 12 is an upwardly convex tile-shaped plate, for example in... Figure 6 The plate in the middle can be an arc-shaped plate with the center line of the microporous tube 32 as the center, or other arc-shaped plates stretched by a quadratic curve. A more preferred implementation is to install the above-mentioned arc-shaped plates stretched by a quadratic curve with their top and bottom sides interchanged to form a downwardly concave tile-shaped plate, which can disperse more ozone microbubbles to both sides.

[0036] Third Embodiment

[0037] The following description will only cover the differences from the first embodiment; see [link to relevant documentation]. Figure 6 In the first embodiment, the microporous tube 32 is a straight tube, while in this example, the microporous tube 32 is a curved tube, such as a coiled tube in the horizontal plane.

[0038] Other implementation methods

[0039] When the height of the high-efficiency mass transfer ozone catalytic ceramic membrane module 100 is low, so that the length-to-width ratio of the ozone catalytic ceramic membrane 4 is small, the outlet 41 can be set only at the top or only at the bottom.

[0040] The microporous tube 32 can be configured as multiple tubes arranged together and interconnected.

[0041] The distribution holes on the ozone distribution plate 12 can also be strip-shaped holes, such as oval holes or rectangular holes.

Claims

1. A high-efficiency mass transfer ozone catalytic ceramic membrane module, comprising a frame and a baffle fixed to the side of the frame, wherein the frame has two spaces that are connected vertically inside; Its features are: The lower space is an ozone diffusion chamber, and the upper space is an ozone contact chamber. An ozone distribution plate is provided in the ozone diffusion chamber to divide the ozone diffusion chamber into upper and lower parts. The ozone distribution plate is provided with multiple distribution holes that penetrate the plate body. A microporous tube is provided below the ozone distribution plate. The ozone contact chamber is equipped with multiple catalytic ceramic membranes, and the outlet of each catalytic ceramic membrane extends out of the ozone contact chamber.

2. The high-efficiency mass transfer ozone catalytic ceramic membrane module according to claim 1, characterized in that: The microporous tube is one or more straight tubes and is horizontally arranged in the ozone diffusion chamber. The ozone distribution plate is a flat plate and the distribution holes are round holes or strip holes.

3. The high-efficiency mass transfer ozone catalytic ceramic membrane module according to claim 1, characterized in that: The microporous tube is one or more straight tubes and is horizontally arranged in the ozone diffusion chamber. The ozone distribution plate is a tile-shaped plate that is convex or concave. The distribution holes are round holes or strip-shaped holes.

4. The high-efficiency mass transfer ozone catalytic ceramic membrane module according to claim 1, characterized in that: The microporous tube is one or more curved tubes, and is horizontally arranged in the ozone diffusion chamber. The ozone distribution plate is a flat plate, and the distribution holes are round holes or strip holes.

5. The high-efficiency mass transfer ozone catalytic ceramic membrane module according to claim 1, characterized in that: The baffle includes a first baffle and a second baffle. The first baffle is sealed to the frame and forms the peripheral wall of the ozone contact chamber. The second baffle is sealed to the frame and forms the peripheral wall of the ozone diffusion chamber.

6. The high-efficiency mass transfer ozone catalytic ceramic membrane module according to any one of claims 1 to 5, characterized in that: The outlet is located at the top and / or bottom of the catalytic ceramic membrane.

7. The high-efficiency mass transfer ozone catalytic ceramic membrane module according to claim 6, characterized in that: Each of the aforementioned outlets is connected to the main outlet pipe.

8. The high-efficiency mass transfer ozone catalytic ceramic membrane module according to claim 6, characterized in that: One end of the microporous tube is sealed, and the other end is open.

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