Water purifying device and water purifying method

Abstract

This invention provides a water purification device and method. The water purification device includes at least one purification unit, which includes a water inlet, a water outlet, a gas inlet, a gas outlet, a bubble generator, and an enrichment element. The bubble generator includes an air inlet and a bubble outlet, the gas inlet being connected to the air inlet of the bubble generator. The enrichment element corresponds to the bubble outlet of the bubble generator. The gas inlet is located on the bottom surface of the water purification unit, the gas outlet is located on the top surface of the water purification unit, and the enrichment element is located inside the water purification unit. The enrichment element is made of a hydrophilic or hydrophobic material. The water purification device provided by this invention can improve the utilization efficiency of ozone, reduce the ineffective decomposition of ozone and the consumption of ozone by other background substances, help reduce the operating cost of the water purification unit, and reduce the generation of other by-products.

Description

Technical Field

[0001] This invention relates to the field of water treatment, and more particularly to a water purification device and a water purification method. Background Technology

[0002] Ozone, as a green gaseous oxidant with strong oxidizing power, has been widely used in the pre-oxidation, disinfection, deodorization, and removal of micro-pollutants in drinking water. Traditional ozone oxidation typically involves adding an ozone / air mixture as bubbles to a contact reaction tank or tower via aeration. The generated bubbles diffuse from the bottom of the tank under buoyancy, and mass transfer between the ozone bubbles and water occurs through the gas-liquid interface as they rise. However, the efficiency of traditional ozone mass transfer via bubbles is not high. This is because the bubbles rise continuously to the surface under buoyancy, and the limitation of the gas-liquid interface results in a poor ozone mass transfer rate. Undissolved ozone escapes into the air with the rising bubbles. Therefore, to ensure an effective ozone dosage, it is usually necessary to increase the volume of the contact reaction tank, raise the height of the reaction tower, or increase the ozone dosage. This not only increases infrastructure and operating costs but may also lead to the generation of toxic byproducts. Summary of the Invention

[0003] This invention provides a water purification device that can improve ozone utilization efficiency, reduce ozone decomposition and ozone consumption by other background substances, help reduce the operating cost of the water purification unit, and reduce the generation of other by-products.

[0004] The present invention also provides a method for purifying water using the above-mentioned water purification device. This method is simple and easy to implement, and can achieve good water purification effect with the help of the above-mentioned water purification device.

[0005] On one hand, the present invention provides a water purification device, including at least one water purification unit, wherein the water purification unit includes a water inlet, a water outlet, a gas inlet, a gas outlet, a bubble generator, and an enrichment element;

[0006] The bubble generator includes an air inlet and a bubble outlet. The gas inlet is connected to the air inlet of the bubble generator. The enrichment element corresponds to the bubble outlet of the bubble generator. The gas inlet is located on the bottom surface of the water purification unit, and the gas outlet is located on the top surface of the water purification unit. The enrichment element is located inside the water purification unit, and the enrichment element is made of a hydrophilic or hydrophobic material.

[0007] Preferably, the enrichment element has micropores with a diameter of 1 nm to 500 μm; more preferably, micropores with a diameter of 0.1 μm to 5 μm.

[0008] Preferably, the enrichment component includes a support rod and several branches, one end of which is fixedly connected to the support rod, and the support rod and / or at least some of the branches correspond to the bubble outlet of the bubble generator.

[0009] Preferably, the hydrophilic-hydrophobic material is woven from fibers of a hydrophilic material and fibers of a hydrophobic material.

[0010] Preferably, the hydrophilic material is a polyolefin and / or a polyamide, and the hydrophobic material is at least one of polyvinylidene fluoride, polytetrafluoroethylene, or a material that has been hydrophobically treated with fluorine, silica, or siloxane substances.

[0011] Preferably, the water purification unit includes several gas inlets, several bubble generators, and several enrichment components.

[0012] Preferably, the water purification unit is provided with several guide plates, which divide the water purification unit into several interconnected sub-units. The water inlet and the water outlet are respectively located on the left and right sides of the water purification unit. Each pair of adjacent guide plates is located on the top and bottom surfaces of adjacent sub-units. Each sub-unit is provided with at least one gas inlet, a bubble generator, and an enrichment component.

[0013] Preferably, the diameter of the bubbles emitted by the bubble generator is 0.02-5 mm.

[0014] Preferably, the bubble generator includes at least one of an aeration disc, a perforated tube, or a hollow fiber membrane with micropores.

[0015] Preferably, the water purification device further includes an exhaust gas treatment system or an exhaust gas collection system, wherein the air inlet of the exhaust gas treatment system or the exhaust gas collection system is connected to the gas outlet.

[0016] Furthermore, the present invention provides a method for purifying water using any of the above-mentioned water purification devices, comprising the following steps:

[0017] The water to be purified is introduced into the inlet of the water purification unit at a flow rate C1, while ozone at a concentration of C2 is introduced into the gas inlet of the water purification unit at a flow rate C3. The ozone mixture is converted into bubbles inside the water purification unit by a bubble generator. The bubbles, the water to be purified, and the enrichment element come into contact with each other and undergo a purification reaction. After a period of time, the purified water flows out from the outlet of the water purification unit, and the remaining gas is discharged from the gas outlet of the water purification unit; wherein, 0m 3 / h <C1≤10000m 3 / h, 0mg / L <C2≤100mg / L,0m 3 / min <C3≤100m 3 / min.

[0018] Compared to traditional ozone water purification units, the device of this invention incorporates an enrichment element within the purification unit. On one hand, the enrichment element can adhere to ozone bubbles, prolonging their residence time in the water, promoting ozone dissolution, and improving ozone utilization efficiency. On the other hand, the enrichment element can enrich organic pollutants in the water to be purified and promote rapid reaction between the ozone bubbles and the enriched organic pollutants, thereby reducing ineffective ozone decomposition and the consumption of ozone by other background substances. This helps reduce the operating and investment costs of the water purification unit, minimizes the generation of other byproducts, and ensures safe effluent. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0020] Figure 1 This is a water purification device according to a specific embodiment of the present invention;

[0021] In the diagram, 001: water purification unit, 002: water inlet, 003: water outlet, 004: gas inlet, 005: gas outlet, 006: bubble generator, 007: enrichment element;

[0022] Figure 2 This is a water purification device according to a specific embodiment of the present invention;

[0023] In the diagram, 001: water purification unit, 002: water inlet, 003: water outlet, 004: gas inlet, 005: gas outlet, 006: bubble generator, 007: enrichment component, 008: baffle plate, 0011: first water purification subunit, 0012: second water purification subunit, 0013: third water purification subunit;

[0024] Figure 3 This is a partial structure of a water purification device according to a specific embodiment of the present invention;

[0025] In the figure, 0061: first perforated tube, 0062: second perforated tube, 0063: third perforated tube, 0071: first enriching component, 0072: second enriching component, and 0073: third enriching component.

[0026] Figure 4 The structure of the enrichment component in a water purification device according to a specific embodiment of the present invention;

[0027] In the diagram, 009: support rod, 010: branch.

[0028] The accompanying drawings have illustrated specific embodiments of the invention, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the embodiments of the invention. Obviously, the described embodiments are only some embodiments of the invention, not all embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0032] On the one hand, the present invention provides a water purification device, combined with Figure 1 The water purification device is described in detail, including at least one water purification unit 001, wherein the water purification unit 001 includes a water inlet 002, a water outlet 003, a gas inlet 004, a gas outlet 005, a bubble generator 006, and an enrichment element 007.

[0033] The bubble generator 006 includes an air inlet and a bubble outlet. The gas inlet is connected to the air inlet of the bubble generator. The enrichment element 007 corresponds to the bubble outlet of the bubble generator 006. The gas inlet 004 is located on the bottom surface of the water purification unit 001. The gas outlet 005 is located on the top surface of the water purification unit 001. The enrichment element 007 is located inside the water purification unit 001. The enrichment element 007 is made of a hydrophilic or hydrophobic material.

[0034] In this invention, by adding an enrichment element within the water purification unit, on the one hand, the hydrophobicity of the enrichment element allows it to adhere to ozone-containing bubbles, prolonging the residence time of the bubbles in the water, promoting the dissolution of ozone in the water, and improving ozone utilization efficiency; on the other hand, the hydrophilic and / or hydrophobic properties of the enrichment element allow it to enrich hydrophilic and / or hydrophobic organic pollutants in the wastewater to be treated, and the enriched bubbles and similarly enriched organic pollutants react rapidly on the surface of the enrichment element, thereby reducing the ineffective decomposition of ozone and the consumption of ozone by other background substances.

[0035] It should be noted that the purpose of the enrichment component 007 corresponding to the bubble outlet of the bubble generator 006 is to enable the ozone-containing bubbles discharged from the bubble outlet to come into contact with the enrichment component 007 in a timely manner, thereby causing the bubbles to adhere to the surface of the enrichment component and preventing the bubbles from floating to the surface under the action of buoyancy before they have reacted. For example, a certain plane of the enrichment component 007 can be aligned with the bubble outlet of the bubble generator 006, or the enrichment component 007 can be fixed to the surface of the bubble generator 006 by a connecting device and make it correspond to at least part of the bubble outlet.

[0036] It is understood that the aforementioned water purification unit 001 can be configured in any form capable of containing wastewater, such as a shell composed of a top surface, a top surface, and side surfaces, which can be any of the following: cylinder, cube, prism, etc. The aforementioned enrichment element 007 can be of any shape, including but not limited to membrane, sheet, cube, hollow cube, tree-like, etc. In order to increase the contact area between the enrichment element and the wastewater, it is preferable to configure the enrichment element as multiple sheets or a tree-like form with a certain spacing, and at the same time, the enrichment element with the largest possible surface area should be designed according to the volume of the water purification unit.

[0037] In one specific implementation, combined with Figure 4 As shown, the enrichment component 007 is tree-shaped, including a support rod 009 and several branches 010. One end of each branch is fixedly connected to the support rod, and the support rod and / or at least some of the branches correspond to the bubble outlet of the bubble generator. It can be understood that the support rod and the branches are made of hydrophilic and hydrophobic materials. The shape of the branches can directly simulate tree branches, or it can be set as a strip, a long cone, etc., and the number of branches can be adjusted according to the situation.

[0038] In one specific embodiment, an ozone supply device is also included, which comprises a delivery pipe connected to the gas inlet 004. Furthermore, it is understood that the gas inlet 004 should be water-resistant, meaning that water within the water purification unit 001 will not flow out from the gas inlet.

[0039] The enrichment component 007 can be connected to the top or bottom surface of the water purification unit via a connecting device, or it can be vertically connected to the bubble generator at a position away from the bubble outlet via a connecting device.

[0040] The positions of the aforementioned inlet 002 and outlet 003 are not particularly limited in this invention. In one specific embodiment, the water purification unit 001 is a hollow cavity, which includes an inlet 002, an outlet 003, a gas inlet 004, a gas outlet 005, a bubble generator 006, and an enrichment element 007; wherein the inlet and outlet are respectively located on the left and right sides adjacent to the bottom surface of the hollow cavity.

[0041] To ensure more thorough ozone purification of wastewater, an openable and closable sealing cap can be installed on both the inlet 002 and the outlet 003. This allows the wastewater to fully react after entering the purification unit 001 before the sealing cap of the outlet 003 is opened to discharge the purified water.

[0042] In one specific embodiment, the enrichment element 007 has micropores with a diameter of 1 nm to 500 μm. In this embodiment, the micropores in the enrichment element 007 can synergistically enrich and adsorb organic pollutants in wastewater through their affinity and repulsion properties, thereby further reducing the consumption of ozone by other background substances and improving the utilization rate of ozone.

[0043] Preferably, the enrichment element 007 has micropores with a diameter of 0.1 μm-5 μm.

[0044] More preferably, the enrichment element 007 has at least three types of micropores with diameters of 0.1μm-0.5μm, 1μm-2μm, and 3μm-5μm. The presence of micropores with different pore sizes can further improve the ability of the enrichment element 007 to enrich organic pollutants, and at the same time further improve the utilization rate of ozone.

[0045] In one specific embodiment, the hydrophilic-hydrophobic material is woven from fibers of a hydrophilic material and fibers of a hydrophobic material. In this embodiment, the enrichment component not only allows for the control of the weaving density to enrich the pore size of the micropores, but also utilizes the weaving to ensure a uniform distribution of the hydrophilic and hydrophobic materials, which is more conducive to the adsorption and enrichment of organic pollutants in wastewater.

[0046] For example, fibers of hydrophilic material and fibers of hydrophobic material of equal diameter are wound into mixed fibers, and then the multi-strand mixed fibers are woven into the enriched component.

[0047] As for the specific types of hydrophilic and hydrophobic materials, the present invention does not make any particular limitation. For example, the hydrophilic material is polyolefin and / or polyamide, and the hydrophobic material is at least one of polyvinylidene fluoride, polytetrafluoroethylene, materials treated with fluorine, silicon dioxide, and siloxane substances for hydrophobic treatment.

[0048] For example, the above-mentioned hydrophilic and hydrophobic materials can be prepared into fibers by conventional methods, or fibrous hydrophilic or hydrophobic materials can be purchased directly from manufacturers.

[0049] The amount of hydrophilic and hydrophobic materials can be adjusted according to the amount of hydrophilic organic pollutants in the water. For example, the volume ratio of hydrophilic materials can be 10%-50%.

[0050] For example, the number average molecular weight of the polyolefin is 200-3,000,000, the number average molecular weight of polypropylene is 500-1,500,000, the number average molecular weight of polyamide is 1,000-2,000,000, the number average molecular weight of polyvinylidene fluoride is 250,000-500,000, and the number average molecular weight of polytetrafluoroethylene is 5,000-20,000.

[0051] The present invention does not specifically limit the number of gas inlets 004, bubble generators 006, and enrichment elements 007. Those skilled in the art can set these numbers according to the required amount of purified water and the size of the water purification unit 001. To improve water purification efficiency, in a preferred embodiment, the water purification unit includes several gas inlets, several bubble generators, and several enrichment elements. It is understood that the gas inlets and bubble generators correspond one-to-one, and the bubble generators and enrichment elements correspond one-to-one.

[0052] Combination Figure 2 As shown, in one specific embodiment, the water purification unit 001 is further provided with a plurality of guide plates 008, which divide the water purification unit 001 into a plurality of interconnected sub-units. The water inlet 002 and the water outlet 003 are respectively provided on the left and right sides of the water purification unit. Each pair of adjacent guide plates is respectively provided on the top and bottom surfaces of adjacent sub-units. Each sub-unit is provided with at least one gas inlet, a bubble generator, and an enrichment component.

[0053] In the above embodiment, the water to be purified enters through inlet 002, is then guided by baffles, and sequentially passes through several sub-units, where a purification reaction occurs. The purified water then flows out through outlet 003. It can be understood that at this point, the number of baffles is N, the number of sub-units is N-1, and the number of gas inlets, bubble generators, and enrichment components are all N.

[0054] In one specific embodiment, four guide plates 008 are equally spaced inside the water purification unit 001. The guide plates divide the water purification unit 001 into three interconnected sub-units, namely the first water purification sub-unit 0011, the second water purification sub-unit 0012, and the third water purification sub-unit 0013.

[0055] In a preferred embodiment, there is a certain distance between the guide plates on the left and right sides of the water purification unit 001 and the left and right side walls of the water purification unit, and the guide plates are arranged perpendicularly to the top and / or bottom surfaces of the water purification unit. This allows the water flow to form a passage within the water purification unit, thereby increasing the contact opportunities and contact area between the water flow and the enrichment component and ozone. Furthermore, the height of the guide plate 008 is X, the height of the water purification unit 001 is Y, and the height of the enrichment component 007 is Z, with 0.8 ≤ Y / X ≤ 1.2 and 0.8 ≤ X / Z ≤ 1.2.

[0056] In a preferred embodiment, the system further includes a frame for housing the enrichment element 007. The frame surface is provided with a connecting portion for connecting to the top or bottom surface of the water purification unit 001. The enrichment element is detachably placed within the frame. In this embodiment, by detachably placing the enrichment element within a frame, the enrichment element 007 can be replaced periodically as needed, preventing a significant decrease in the water purification efficiency of the water purification unit 001 after a period of use. The frame can be made of stainless steel, copper, aluminum, or other corrosion-resistant alloys.

[0057] In a preferred embodiment, the diameter of the bubbles emitted by the bubble generator is 0.02-5 mm. The size of the bubbles affects the adhesion effect of the enrichment element, and furthermore, bubbles within this diameter range and the enrichment element including certain micropores can synergistically improve ozone utilization.

[0058] The bubble generator 006 is at least one of an aeration disc, a perforated tube, or a hollow fiber membrane with micropores. When an aeration disc is used, the enrichment element 007 can be vertically fixed above the aeration disc; when a perforated tube is used, it can be directly fixed to the perforated tube.

[0059] Combination Figure 3 As shown, in one specific embodiment, the bubble generator includes a plurality of perforated tubes, and the enrichment element includes a plurality of sub-enrichment elements. The sub-enrichment elements correspond one-to-one with the perforated tubes. The sub-enrichment elements are fixed at the bubble outlet of the perforated tubes, and the sub-enrichment elements and the perforated tubes are spaced apart. This embodiment can further increase the probability of contact between the bubbles and the enrichment elements, thereby further improving the utilization rate of ozone.

[0060] In one specific embodiment, the bubble generator 006 includes three perforated tubes, namely a first perforated tube 0061, a second perforated tube 0062, and a third perforated tube 0063. The enrichment element 007 includes three sub-enrichment elements, namely a first enrichment element 0071, a second enrichment element 0072, and a third enrichment element 0073. The first enrichment element 0071 is fixed at the bubble outlet of the first perforated tube 0061, the second enrichment element 0072 is fixed at the bubble outlet of the second perforated tube 0062, and the third enrichment element 0073 is fixed at the bubble outlet of the third perforated tube 0063. The air inlet of the third perforated tube 0063 is connected to the gas inlet 004.

[0061] The water purification device 001 further includes an exhaust gas collection system or exhaust gas collection system, which includes an air inlet and is connected to the gas outlet.

[0062] For example, the exhaust gas treatment system includes an ozone-decomposing unit, which includes an air inlet connected to the gas outlet.

[0063] For example, the ozone-decomposing unit mentioned above includes an electrically heated manganese dioxide catalytic device.

[0064] Furthermore, the present invention provides a method for purifying water, which uses any of the water purification devices provided above, and includes the following steps:

[0065] The water to be purified is introduced into the inlet of the water purification unit at a flow rate C1, while an ozone mixture with a concentration of C2 is introduced into the gas inlet of the water purification unit at a flow rate C3. The ozone mixture is converted into bubbles inside the water purification unit by a bubble generator. The bubbles, the water to be purified, and the enrichment element come into contact with each other and undergo a purification reaction. After a period of time, the purified water flows out from the outlet of the water purification unit, and the remaining gas is discharged from the gas outlet of the water purification unit; wherein, 0m 3 / h <C1≤10000m 3 / h, 0mg / L <C2≤100mg / L,0m 3 / min <C3≤100m 3 / min.

[0066] The ozone mixture mentioned above is generally a mixture of ozone and air; the remaining gas mentioned above refers to unreacted ozone and a small amount of other gases that are not dissolved in water.

[0067] The present invention will be described in detail below with reference to specific embodiments:

[0068] In the following experiments, the CAS number of the raw material polyamide is 5892-11-5, and the CAS number of polytetrafluoroethylene is 9002-84-0.

[0069] Example 1

[0070] This example provides a water purification device, such as... Figure 2 As shown, it includes: a water purification unit 001 with dimensions of 1500mm × 1200mm × 900mm, which is configured as a shell. The water purification unit includes an inlet 002 and an outlet 003, which are located on the left and right sides of the water purification unit 001. 43 guide plates 008 (750mm high) are evenly spaced inside the water purification unit, dividing it into several interconnected sub-units (first water purification sub-unit 0011, second water purification sub-unit 0012, and third water purification sub-unit 0013). Each pair of adjacent guide plates is located on the top and bottom surfaces of the adjacent sub-unit, respectively. Each sub-unit is equipped with a gas inlet 004 and a... The system includes a bubble generator 006 and an enrichment element 007. The bubble generator 006 includes an air inlet and a bubble outlet. The gas inlet is connected to the air inlet of the bubble generator 006. The enrichment element 007 corresponds to the bubble outlet of the bubble generator 006. The gas inlet is located on the bottom surface of the water purification unit, and the gas outlet is located on the top surface of the water purification unit. The enrichment element comprises five layers (700mm high, 150mm wide) woven from polyamide and polytetrafluoroethylene fibers. Each layer has micropores with a diameter of 0.2-0.5μm. The bubble generator 006 is an aeration disc (made of titanium alloy, with a diameter of 100mm and an air flow rate of 1-1.5m³). 3 / h), the diameter of the bubbles discharged by the bubble generator is 3mm; the five layers of each enrichment element are fixed to the surface of the aeration disc at intervals by connecting rods (the connecting rods are fixed at a position away from the bubble outlet), and the water purification device also includes a tail gas collection system, the air inlet of the tail gas collection system is connected to the gas outlet.

[0071] Example 2

[0072] This example provides a water purification device, whose structure is basically the same as that of Example 1. The only difference is that the diameter of the micropores distributed in each layer of the enrichment element is not higher than 0.1 μm by adjusting the diameter of the polyamide and polytetrafluoroethylene fibers and the density of the weaving.

[0073] Example 3

[0074] This example provides a water purification device, whose structure is basically the same as that of Embodiment 1, the only difference being, see [link to Embodiment 1]. Figure 4The enrichment component 007 is tree-shaped, specifically including a support rod 009 and 14 branches 010 evenly spaced on the support rod. The support rod is a cylinder (600-700mm high, 30mm in diameter) woven from polyamide and polytetrafluoroethylene fibers. The branches are strips (80-100mm long, 15-25mm wide) woven from polyamide and polytetrafluoroethylene fibers. The surfaces of the support rod and branches are distributed with micropores of 0.2-0.5μm. A thin steel wire runs through the middle of each branch for shaping. One end of the branch is fixedly connected to the support rod. One end of the support rod is fixed on the surface of the aeration disc at a position away from the bubble outlet. At least some branches correspond to the bubble outlet of the bubble generator.

[0075] Comparative Example 1

[0076] This example provides a water purification device, which is basically the same as that in Embodiment 1, except that it does not have an enrichment element.

[0077] Experimental Example 1

[0078] This example provides a method for purifying water using the water purification device of Example 1. The water to be purified is wastewater containing dye, specifically the pollutants being: reactive bright red dye at a concentration of 100 mg / L and organic pollutants (COD) at a concentration of approximately 300 mg / L. The method includes the following steps:

[0079] The water to be purified is fed at a flow rate of 1.6m³ / h. 3 Ozone is continuously introduced into the inlet of the water purification unit at a rate of 0.5 L / min, while ozone at a concentration of 30 mg / L is introduced into the gas inlet of the water purification unit at a rate of 0.5 L / min. The ozone is converted into bubbles inside the water purification unit by a bubble generator. The bubbles, the water to be purified, and the enrichment element come into contact with each other. After 1 hour, the purified water flows out from the outlet of the water purification unit, and the remaining gas is discharged from the gas outlet of the water purification unit and enters the exhaust gas collection system.

[0080] Experimental Example 2

[0081] This example provides a method for purifying water using the water purification device of Example 1. The steps are the same as in Example 1, except that the water to be purified is river water containing micro-pollutants, specifically tetracycline at a concentration of 500 μg / L and bromide ions at a concentration of 200 μg / L.

[0082] Experimental Example 3

[0083] This example provides a method for purifying water using the water purification device of Example 2, with the same steps as in Example 1.

[0084] Test Example 4

[0085] This example provides a method for purifying water using the water purification device of Example 3, with the same steps as in Example 1.

[0086] Comparative Test Example 1

[0087] This example provides a method for purifying water using the water purification device of Comparative Example 1. The steps are the same as in Experimental Example 1, except that the water purification device of Comparative Example 1 is used.

[0088] Comparative Test Example 2

[0089] This example provides a method for purifying water using the water purification device of Comparative Example 1. The steps are the same as in Experimental Example 2, except that the water purification device of Comparative Example 1 is used.

[0090] Related test analysis

[0091] 1: Take 20 mL of purified water from the test case and the control case respectively, and analyze the content of pollutants in the water using high performance liquid chromatography. Then, calculate the pollutant removal rate of each test based on the content of pollutants in the water before treatment.

[0092] 2: Collect the gas discharged from the gas outlets of each test case and the control test case after the same treatment time.

[0093] Comparison of effects: The method in Experiment 1 achieved removal rates of 98% and 59% for dye and COD in wastewater, respectively; the method in Experiment 3 achieved removal rates of 90% and 50% for dye and COD, respectively; and the method in Experiment 4 achieved removal rates of 100% and 62% for dye and COD, respectively. In contrast, the traditional ozone oxidation method in Experiment 1 achieved removal rates of 60% and 28% for dye and COD, respectively. Furthermore, the ozone utilization efficiency of the method in Experiment 1 was approximately three times that of the method in Experiment 1.

[0094] After 30 minutes of treatment, the method in Experiment Example 2 achieved a 100% removal rate of tetracycline, with a bromate formation of only 7.2 micrograms per liter, which is lower than the limit of 10 micrograms per liter stipulated in the national drinking water standard. In contrast, the traditional ozone oxidation method in Experiment Example 2 had a removal efficiency of 60%, with a bromate formation of 27 micrograms per liter.

[0095] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A water purification device, characterized in that, It includes at least one water purification unit and an ozone supply device. The water purification unit includes a water inlet, a water outlet, a gas inlet, a gas outlet, a bubble generator, and an enrichment element. The bubble generator includes an air inlet and a bubble outlet. The gas inlet is connected to the air inlet of the bubble generator. The enrichment element corresponds to the bubble outlet of the bubble generator. The gas inlet is located on the bottom surface of the water purification unit, the gas outlet is located on the top surface of the water purification unit, and the enrichment element is located inside the water purification unit. The enrichment element is made of a hydrophilic or hydrophobic material. The enrichment element has micropores with a diameter of 1 nm-500 μm; The hydrophilic and hydrophobic material is woven from fibers of hydrophilic and hydrophobic materials; the ozone supply device includes a delivery pipe connected to the gas inlet.

2. The water purification device according to claim 1, characterized in that, The enrichment element has micropores with a diameter of 0.1 μm-5 μm.

3. The water purification device according to claim 1 or 2, characterized in that, The enrichment component includes a support rod and several branches, one end of which is fixedly connected to the support rod, and the support rod and / or at least some of the branches correspond to the bubble outlet of the bubble generator.

4. The water purification device according to claim 1 or 2, characterized in that, The hydrophilic material is polyamide, and the hydrophobic material is at least one of polyvinylidene fluoride and polytetrafluoroethylene.

5. The water purification device according to claim 3, characterized in that, The hydrophilic material is polyamide, and the hydrophobic material is at least one of polyvinylidene fluoride and polytetrafluoroethylene.

6. The water purification device according to claim 1 or 2, characterized in that, The water purification unit includes several gas inlets, several bubble generators, and several enrichment components.

7. The water purification device according to claim 3, characterized in that, The water purification unit includes several gas inlets, several bubble generators, and several enrichment components.

8. The water purification device according to claim 4, characterized in that, The water purification unit includes several gas inlets, several bubble generators, and several enrichment components.

9. The water purification device according to claim 5, characterized in that, The water purification unit includes several gas inlets, several bubble generators, and several enrichment components.

10. The water purification device according to claim 6, characterized in that, The water purification unit is provided with several guide plates, which divide the water purification unit into several interconnected sub-units. The water inlet and the water outlet are respectively located on the left and right sides of the water purification unit. Each pair of adjacent guide plates is located on the top and bottom surfaces of adjacent sub-units. Each sub-unit is provided with at least one gas inlet, a bubble generator, and an enrichment component.

11. The water purification device according to any one of claims 7-9, characterized in that, The water purification unit is provided with several guide plates, which divide the water purification unit into several interconnected sub-units. The water inlet and the water outlet are respectively located on the left and right sides of the water purification unit. Each pair of adjacent guide plates is located on the top and bottom surfaces of adjacent sub-units. Each sub-unit is provided with at least one gas inlet, a bubble generator, and an enrichment component.

12. The water purification device according to claim 1 or 2, characterized in that, The diameter of the bubbles emitted by the bubble generator is 0.02-5mm.

13. The water purification device according to claim 3, characterized in that, The diameter of the bubbles emitted by the bubble generator is 0.02-5mm.

14. The water purification device according to claim 4, characterized in that, The diameter of the bubbles emitted by the bubble generator is 0.02-5mm.

15. The water purification device according to claim 6, characterized in that, The diameter of the bubbles emitted by the bubble generator is 0.02-5mm.

16. The water purification device according to any one of claims 5, 7-10, characterized in that, The diameter of the bubbles emitted by the bubble generator is 0.02-5mm.

17. The water purification device according to claim 11, characterized in that, The diameter of the bubbles emitted by the bubble generator is 0.02-5mm.

18. The water purification device according to claim 1 or 2, characterized in that, The bubble generator includes at least one of an aeration disc, a perforated tube, or a hollow fiber membrane with micropores.

19. The water purification device according to claim 3, characterized in that, The bubble generator includes at least one of an aeration disc, a perforated tube, or a hollow fiber membrane with micropores.

20. The water purification device according to claim 4, characterized in that, The bubble generator includes at least one of an aeration disc, a perforated tube, or a hollow fiber membrane with micropores.

21. The water purification device according to claim 6, characterized in that, The bubble generator includes at least one of an aeration disc, a perforated tube, or a hollow fiber membrane with micropores.

22. The water purification device according to claim 11, characterized in that, The bubble generator includes at least one of an aeration disc, a perforated tube, or a hollow fiber membrane with micropores.

23. The water purification device according to claim 12, characterized in that, The bubble generator includes at least one of an aeration disc, a perforated tube, or a hollow fiber membrane with micropores.

24. The water purification device according to any one of claims 5, 7-10, 13-15, and 17, characterized in that, The bubble generator includes at least one of an aeration disc, a perforated tube, or a hollow fiber membrane with micropores.

25. The water purification device according to claim 16, characterized in that, The bubble generator includes at least one of an aeration disc, a perforated tube, or a hollow fiber membrane with micropores.

26. The water purification device according to claim 1 or 2, characterized in that, The water purification device also includes an exhaust gas treatment system or an exhaust gas collection system, wherein the air inlet of the exhaust gas treatment system or the exhaust gas collection system is connected to the gas outlet.

27. The water purification device according to claim 3, characterized in that, The water purification device also includes an exhaust gas treatment system or an exhaust gas collection system, wherein the air inlet of the exhaust gas treatment system or the exhaust gas collection system is connected to the gas outlet.

28. The water purification device according to claim 4, characterized in that, The water purification device also includes an exhaust gas treatment system or an exhaust gas collection system, wherein the air inlet of the exhaust gas treatment system or the exhaust gas collection system is connected to the gas outlet.

29. The water purification device according to claim 6, characterized in that, The water purification device also includes an exhaust gas treatment system or an exhaust gas collection system, wherein the air inlet of the exhaust gas treatment system or the exhaust gas collection system is connected to the gas outlet.

30. The water purification device according to any one of claims 5, 7-10, 13-15, 17, 19-23, and 25, characterized in that, The water purification device also includes an exhaust gas treatment system or an exhaust gas collection system, wherein the air inlet of the exhaust gas treatment system or the exhaust gas collection system is connected to the gas outlet.

31. The water purification device according to claim 11, characterized in that, The water purification device also includes an exhaust gas treatment system or an exhaust gas collection system, wherein the air inlet of the exhaust gas treatment system or the exhaust gas collection system is connected to the gas outlet.

32. The water purification device according to claim 12, characterized in that, The water purification device also includes an exhaust gas treatment system or an exhaust gas collection system, wherein the air inlet of the exhaust gas treatment system or the exhaust gas collection system is connected to the gas outlet.

33. The water purification device according to claim 16, characterized in that, The water purification device also includes an exhaust gas treatment system or an exhaust gas collection system, wherein the air inlet of the exhaust gas treatment system or the exhaust gas collection system is connected to the gas outlet.

34. The water purification device according to claim 18, characterized in that, The water purification device also includes an exhaust gas treatment system or an exhaust gas collection system, wherein the air inlet of the exhaust gas treatment system or the exhaust gas collection system is connected to the gas outlet.

35. The water purification device according to claim 24, characterized in that, The water purification device also includes an exhaust gas treatment system or an exhaust gas collection system, wherein the air inlet of the exhaust gas treatment system or the exhaust gas collection system is connected to the gas outlet.

36. A method for purifying water using the water purification device according to any one of claims 1-35, characterized in that, Includes the following steps: The water to be purified is introduced into the inlet of the water purification unit at a flow rate C1, while an ozone mixture with a concentration of C2 is introduced into the gas inlet of the water purification unit at a flow rate C3. The ozone mixture is converted into bubbles inside the water purification unit by a bubble generator. The bubbles, the water to be purified, and the enrichment element come into contact with each other and undergo a purification reaction. After a period of time, the purified water flows out from the outlet of the water purification unit, and the remaining gas is discharged from the gas outlet of the water purification unit; wherein, 0 m 3 / h <C1≤10000 m 3 / h, 0mg / L <C2≤100 mg / L,0 m 3 / min <C3≤100 m 3 / min.

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