Ozone powder carbon coupling membrane system for synchronously removing odor and turbidity of drinking water

Abstract

The invention discloses an ozone powder carbon coupling membrane system for synchronously removing odor and turbidity of drinking water in the field of feed water treatment, which comprises a reaction tank, an ozone adding system, a powder carbon adding system and a backwashing system, and ceramic membranes are uniformly distributed at the bottom of an ozone / powder active carbon / membrane reaction tank. The synergistic effect of the powdered activated carbon and ozone catalytic oxidation realizes oxidation regeneration of the activated carbon, avoids adsorption saturation of the activated carbon, and reduces the dosage and replacement frequency of the activated carbon; meanwhile, the anti-pollution capacity of the ceramic membrane is high, and the service life of the membrane is prolonged, the replacement frequency of the membrane is reduced and the operation cost of the system is comprehensively reduced through the reasonable design of a backwashing system.

Description

Technical Field

[0001] The invention relates to the field of water treatment, in particular to an ozone powder carbon coupled membrane system for synchronously removing the odor and turbidity of drinking water. Background Art

[0002] With socioeconomic development and improved living standards, the demand for drinking water quality is becoming increasingly stringent. Traditional drinking water treatment processes, such as coagulation, sedimentation, filtration, and disinfection, are gradually showing their limitations in addressing increasingly complex water pollution, making it difficult to effectively remove odorous substances and other recalcitrant organic matter from water. 2-Methylisoborneol (2-MIB) and geosmin (GSM) are two of the most typical odorous substances in drinking water. They are often produced by the growth of bacteria and phytoplankton, especially cyanobacteria, and pose a serious threat to drinking water safety.

[0003] Ozone has strong oxidizing properties and can react with refractory organic matter, such as odorous substances, breaking them down into small molecules. Ceramic membranes can effectively intercept and separate these small molecules and other impurities. The synergistic effect of these two technologies can improve the removal efficiency of refractory organic matter. In the field of water treatment, several related patents have been proposed. For example, patent CN111470676A discloses a system and method for treating industrial wastewater using ozone-ceramic membrane-coupled oxidation technology. This system uses the ceramic membrane component Al2O3 as a catalyst for ozone oxidation, accelerating the reaction rate. However, this method suffers from problems such as the ceramic membrane's small reaction area, short catalytic time, and lack of adsorption, making it difficult to achieve high oxidation efficiency. Furthermore, patent CN107673504A discloses a method for purifying drinking water using an ozone-ceramic membrane-activated carbon combination. This method removes turbidity from water through flocculation and ceramic membrane filtration, and removes conventional organic matter from the water through the combined use of ozone, ceramic membrane, and activated carbon. However, due to ozone's limited ability to oxidize refractory organic matter, this can lead to the formation of intermediate products and an inability to fully mineralize them. To address the aforementioned issues with existing patented technologies, this invention proposes an ozone-powdered carbon-coupled membrane system for simultaneous removal of odor and turbidity in drinking water. Applied to a flocculation sedimentation tank, this system combines the efficient adsorption and catalytic properties of powdered activated carbon, the strong oxidizing properties of hydroxyl radicals, and the excellent solid-liquid separation performance of ceramic membranes, aiming to provide a more efficient, reliable, and economical solution for advanced drinking water treatment.

[0004] Therefore, those skilled in the art provide an ozone powder carbon coupled membrane system for simultaneously removing the odor and turbidity of drinking water to solve the problems raised in the above background technology. Summary of the Invention

[0005] The object of the present invention is to provide an ozone powder carbon coupled membrane system for simultaneously removing the odor and turbidity of drinking water, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An ozone powder carbon coupled membrane system for simultaneously removing the odor and turbidity of drinking water includes a reaction tank, an ozone dosing system, a powder carbon dosing system, and a backwashing system. A ceramic membrane filter device is provided at the bottom of the reaction tank, and vertically arranged ceramic membranes are evenly distributed on the ceramic membrane filter device.

[0008] The reaction tank is an ozone / powdered activated carbon / membrane reaction tank.

[0009] As a further solution of the present invention: an L-shaped water inlet pipe is provided on the top side of the reaction tank, the water outlet of the ceramic membrane filtration device is connected to a water outlet pipe, the water outlet pipe is connected to a water pump through a flange, and the water outlet of the ceramic membrane filtration device is discharged through the water outlet pipe under the action of the water pump.

[0010] As a further solution of the present invention, the ceramic membrane of the ceramic membrane filtration device adopts an immersed flat membrane, the material is Al2O3, the spacing between the ceramic membranes is 25-35mm, the pore size of the ceramic membrane is 60-100nm, the operating pressure is 0.1-0.3MPa, and the membrane flux is 150-200L / (m 2 ·h).

[0011] As a further solution of the present invention: the ozone dosing system includes a plurality of ozone dosing devices, ozone ejectors and ozone generators connected in sequence; the ozone dosing device and the ozone generator are connected by a pipeline, the ozone dosing device extends between the inner wall of the reaction tank and the ceramic membrane and between each ceramic membrane, and the ozone dosing device is connected to the ozone ejector through an angle adjustment bracket.

[0012] As a further embodiment of the present invention, the total ozone dosage of the ozone dosing device is set to 1.0-8.0 mg / L, the ozone dosage of a single ozone dosing device is not higher than 1.0 mg / L, and the adjustment angle of the angle adjustment bracket (7) is 0-180 degrees. The angle adjustment bracket can change the angle of the ozone ejector within the range of 0-180 degrees. The ozone ejector can not only eject ozone, but also the jet airflow generated during the ozone ejection process can remove impurities adhering to the ceramic membrane, thereby playing a role in cleaning the ceramic membrane.

[0013] As a further solution of the present invention, the pulverized carbon dosing system includes a pulverized carbon dosing device and a pulverized carbon dosing ejector and a water inlet connected to the pulverized carbon dosing device, and the pulverized carbon dosing ejector and the water inlet extend into the reaction tank.

[0014] As a further solution of the present invention: the powdered activated carbon used in the powdered carbon dosing system has an iodine value of not less than 900 mg / g, a particle size of not less than 200 mesh, and the powdered activated carbon dosage is set to 0.5-20.0 mg / L.

[0015] As a further solution of the present invention: the backwash system includes an emptying device and a backwashing water washing device, and the intensity of the backwash water in the backwashing water washing device is 10-25m 3 / (m 2 ·h), the backwash time is 3-5min.

[0016] As a further solution of the present invention, an ozone destroyer for destroying unreacted ozone is provided on the top of the reaction tank.

[0017] As a further solution of the present invention: the water inlet pipe, the water outlet pipe, the emptying device, and the backwash water washing device pipes are all made of 316L stainless steel, and valves are provided on the water inlet pipe, the water outlet pipe, the emptying device, and the backwash water washing device pipes.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The system of the present invention can deeply remove odorous substances and turbidity from drinking water. The data from the examples show that after treating Yellow River source reservoir water containing certain concentrations of 2-MIB, GSM, particulate matter, and turbidity, the effluent 2-MIB and GSM concentrations were below the detection limit, turbidity was significantly reduced, and the particle count was significantly reduced. The effluent water quality met and exceeded the "National Drinking Water Quality Standard (GB5749-2022)". Compared with existing processes, the removal of odorous substances and turbidity is more effective.

[0020] 2. The synergistic effect of powdered activated carbon and ozone catalytic oxidation in the present invention realizes the oxidative regeneration of activated carbon, avoids the adsorption saturation of activated carbon, and reduces the dosage and replacement frequency of activated carbon; at the same time, the ceramic membrane has strong anti-pollution ability. Through the reasonable backwash system design, the service life of the membrane is extended, the frequency of membrane replacement is reduced, and the operating cost of the system is comprehensively reduced.

[0021] 3. The present invention effectively reduces the instantaneous ozone concentration that reacts with bromide ions in water by adding ozone at multiple points, thereby avoiding the production of oxidation by-products such as bromate and ensuring the safety of drinking water.

[0022] 4. The present invention can adapt to different types of incoming water quality. The integrated process design simplifies the process flow, reduces the connecting pipes and ancillary facilities between treatment units, improves the compactness and reliability of the system, and can be promoted and applied in different regions and different water demand scenarios.

[0023] 5. The treatment process of the present invention is simple, practical and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] In the figure: 1. Water inlet pipe; 2. Powder dosing device; 3. Water suction port; 4. Powder dosing ejector; 5. Ceramic membrane; 6. Ozone dosing device; 7. Angle adjustment bracket; 8. Ozone ejector; 9. Ozone generator; 10. Backwash water washing device; 11. Emptying device; 12. Water outlet pipe; 13. Water pump; 14. Ozone destroyer. DETAILED DESCRIPTION

[0026] See also Figure 1 In an embodiment of the present invention, an ozone powder carbon coupled membrane system for simultaneously removing the odor and turbidity of drinking water includes a reaction tank, an ozone dosing system, a powder carbon dosing system, and a backwashing system. A ceramic membrane filter device is provided at the bottom of the reaction tank, and vertically arranged ceramic membranes 5 are evenly distributed on the ceramic membrane filter device.

[0027] Among them, an L-shaped water inlet pipe 1 is set on one side of the top of the reaction tank, and the water outlet of the ceramic membrane filter device is connected to the water outlet pipe 12, and the water outlet pipe 12 is connected to the water pump 13 through a flange. The water outlet of the ceramic membrane filter device is discharged through the water outlet pipe 12 under the action of the water pump 13; the ceramic membrane 5 of the ceramic membrane filter device adopts an immersed flat membrane made of Al2O3, and the spacing between the ceramic membranes 5 is 25-35mm. The pore size of the ceramic membrane 5 is 60-100nm, the operating pressure is 0.1-0.3MPa, and the membrane flux is 150-200L / (m 2 ·h).

[0028] The ozone dosing system includes a plurality of ozone dosing devices 6, ozone ejectors 8, and ozone generators 9 connected in sequence; the ozone dosing devices 6 and the ozone generators 9 are connected via a pipeline, the ozone dosing devices 6 extend between the inner wall of the reaction tank and the ceramic membrane 5 and between each ceramic membrane 5, and the ozone dosing devices 6 are connected to the ozone ejectors 8 via an angle adjustment bracket 7; the total ozone dosage of the ozone dosing devices 6 is set to 1.0-8.0 mg / L, the ozone dosage of a single ozone dosing device 6 is not higher than 1.0 mg / L, and the adjustment angle of the angle adjustment bracket (7) is 0-180°. The angle adjustment bracket 7 enables the ozone ejector to change its angle within the range of 0-180°. The ozone ejector can not only spray ozone, but also the jet airflow generated during the ozone spraying process can remove impurities adhering to the ceramic membrane, thereby cleaning the ceramic membrane.

[0029] Among them, the powdered carbon dosing system includes a powdered carbon dosing device and a powder dosing ejector 4 and a water intake port 3 connected to the powdered carbon dosing device, and the powder dosing ejector 4 and the water intake port 3 extend into the reaction tank; the powdered activated carbon used in the powdered carbon dosing system has an iodine value of not less than 900 mg / g and a particle size of not less than 200 mesh, and the powdered activated carbon dosage is set to 0.5-20.0 mg / L.

[0030] The backwash system includes an emptying device 11 and a backwash water washing device 10. The strength of the backwash water in the backwash water washing device 10 is 10-25m 3 / (m 2 ·h), the backwash time is 3-5min.

[0031] An ozone destroyer 14 for destroying unreacted ozone is provided on the top of the reaction tank.

[0032] Among them, the water inlet pipe 1, the water outlet pipe 12, the emptying device 11, and the backwash water washing device 10 pipes are all made of 316L stainless steel, and valves are provided on the water inlet pipe 1, the water outlet pipe 12, the emptying device 11, and the backwash water washing device 10 pipes.

[0033] The water pump 13, the ozone destroyer 14, the ozone dosing system and the backwashing system are all powered and controlled by an external controller.

[0034] Working principle of the present invention: The present invention is a deep treatment process for drinking water that integrates ozone catalytic oxidation, powdered carbon adsorption catalysis and ceramic membrane 5 filtration. First, an ozone ejector is used to bring ozone into the reaction tank, and powdered activated carbon is added to the effluent of the sedimentation tank by a powdered carbon dosing device. The main functions of the powdered carbon are adsorption and catalysis. On the one hand, powdered activated carbon has a huge specific surface area and many tiny pores inside it. These pores provide a large number of adsorption sites. The adsorption process is mainly physical adsorption, which is caused by intermolecular forces (van der Waals forces). When the odorous substance molecules in the water are close to the surface of the activated carbon, due to these forces, 2-MIB and GSM will be adsorbed in the pores of the activated carbon. On the other hand, the reaction rate constant of ozone with odorous substances such as 2-MIB is low (<10M -1 s -1 ), has limited ability to remove odorous substances, while powdered activated carbon can catalyze the decomposition of ozone to produce hydroxyl radicals with strong oxidizing properties. The oxidation potential of hydroxyl radicals is as high as 2.80V, second only to fluorine (2.87V), and the secondary reaction rate constant of hydroxyl radicals with 2-MIB and GSM is as high as 109M -1 s -1It can rapidly oxidize odorous substances in water, breaking them down into inorganic substances such as carbon dioxide and water, thereby achieving the ultimate removal of odorous substances. Furthermore, by setting up a multi-stage ozone dosing system, the instantaneous ozone concentration that reacts with bromide ions in water can be reduced, thereby effectively avoiding the formation of oxidation byproducts such as bromate.

[0035] At the same time, a synergistic effect exists between the adsorption of powdered activated carbon and the catalytic oxidation of ozone. On the one hand, odorous substances adsorbed on the activated carbon surface are more easily exposed to ozone or hydroxyl radicals, which accumulate on the activated carbon surface and enhance the efficiency of the oxidation reaction. On the other hand, ozone catalytically oxidizes the odorous substances on the activated carbon surface, promoting activated carbon regeneration, preventing adsorption saturation, and significantly reducing operating costs. Furthermore, because the specific surface area of ​​the powdered activated carbon is much larger than the reaction area of ​​the ceramic membrane 5, its catalytic efficiency is significantly enhanced compared to the Al2O3 in the ceramic membrane 5, significantly improving the oxidation removal efficiency of odorous substances.

[0036] In addition, the ceramic membrane 5 has a large flux and can efficiently intercept colloids and particulate matter, achieving deep turbidity reduction. The ceramic membrane 5 has chemical stability and hydrophilic and oleophobic properties under extreme environments, which makes the membrane element extremely anti-fouling. The membrane surface is smooth and hydrophilic, making it easy to remove attached dirt and maintaining high flux for a long time. The ozone ejector extends between the membranes. The ozone ejector is connected to the ozone dosing device 6 using an angle adjustment bracket 7. The angle adjustment bracket 7 can be adjusted by adjusting the screws, knobs or slots on the bracket to enable the ozone ejector to change its angle within a certain range. By setting a reasonable angle, it plays a role in disturbing the water flow and flushing the ceramic membrane, preventing powdered carbon from adhering to the surface of the membrane and making it evenly suspended in the water body. At the same time, it extends the backwash cycle of the ceramic membrane 5 and reduces the replacement frequency. At the same time, ozone has a deactivating effect on microorganisms, which can inhibit the growth and reproduction of algae, bacteria, etc. in the ceramic membrane 5, effectively reducing the risk of membrane biofouling. The effluent after being filtered by the ceramic membrane 5 flows into the outlet pipe 12 and is discharged under the action of the water pump. In addition, the ceramic membrane 5 adopts a periodic backwashing combined with chemical cleaning method, which can promptly remove pollutants on the membrane surface, maintain the stability of the membrane's high flux, further extend the service life of the ceramic membrane 5, and reduce the frequency of membrane replacement and operating costs.

[0037] The second aspect provides the application of the above-mentioned ozone powder carbon coupled membrane system for simultaneous removal of odor and turbidity of drinking water in the field of water treatment.

[0038] The present invention will be further described in detail below with reference to specific embodiments. It should be noted that the specific embodiments are intended to explain rather than limit the present invention.

[0039] Example 1

[0040] An ozone powder carbon coupled membrane system for simultaneously removing the odor and turbidity of drinking water comprises a reaction tank, an ozone dosing system, a powder carbon dosing system and a backwashing system.

[0041] A water inlet pipe 1 is provided at the upper part of the reaction tank, and the effluent flows into the water outlet pipe 12 under the action of a water pump and is then discharged.

[0042] The ozone dosing system includes a plurality of ozone dosing devices 6 and ozone ejectors 8 connected in sequence, and the total ozone dosage is 3.0 mg / L.

[0043] The ozone ejector 8 extends between the submerged flat membranes and is connected to the ozone dosing device 6 using an angle adjustment bracket 7, so that the ozone ejector can change its angle within a certain range. The angle between the ozone ejector outlet and the horizontal is 45°.

[0044] The powdered carbon dosing system includes a powdered carbon dosing device and a powder dosing ejector 4 and a water inlet 3 connected to the powdered carbon dosing device. The powder dosing ejector 4 and the water inlet 3 extend into the reaction tank. The powdered activated carbon dosage is 5.0 mg / L, the iodine value of the powdered activated carbon is 900 mg / g, and the particle size is 200 mesh.

[0045] The reaction pool uses an immersed flat membrane made of Al2O3. The spacing between the immersed flat membranes is 30mm. There are 5 ceramic membrane reactors with a pore size of 60-100nm. The operating pressure is 0.1-0.3MPa and the membrane flux is 200L / (m 2 ·h).

[0046] The water from a Yellow River source reservoir (permanganate index: 4.5 mg / L, 2-MIB: 120.5 ng / L, GSM: 26.4 ng / L, particle number: 10773 CNT / mL, turbidity: 12.45 NTU) was treated using conventional treatment process (mixing + flocculation + precipitation) + ozone powdered carbon coupled membrane system.

[0047] After testing, the effluent permanganate index was 0.9 mg / L, the 2-MIB concentration was lower than the detection limit (<2.2 ng / L), the GSM concentration was lower than the detection limit (<3.8 ng / L), the average effluent particle number was 85 CNT / mL, the average effluent turbidity was 0.050 NTU, the average effluent total bacteria count was 162 CFU / mL, and bromate was not detected. The effluent water quality meets and exceeds the "National Drinking Water Quality Standard (GB5749-2022)".

[0048] Example 2

[0049] An ozone-powdered carbon-coupled membrane system for simultaneous removal of odor and turbidity in drinking water includes a reaction tank, an ozone dosing system, a powdered carbon dosing system, and a backwash system.

[0050] A water inlet pipe 1 is provided at the upper part of the reaction tank, and the effluent flows into the water outlet pipe 12 under the action of a water pump and is then discharged.

[0051] The ozone dosing system includes a plurality of ozone dosing devices 6 and ozone ejectors 8 connected in sequence, and the total ozone dosage is 5.0 mg / L.

[0052] The ozone ejector 8 extends between the submerged flat membranes and is connected to the ozone dosing device 6 using an angle adjustment bracket 7, so that the ozone ejector can change its angle within a certain range. The angle between the ozone ejector outlet and the horizontal is 45°.

[0053] The powdered carbon dosing system includes a powdered carbon dosing device and a powder dosing ejector 4 and a water inlet 3 connected to the powdered carbon dosing device. The powder dosing ejector 4 and the water inlet 3 extend into the reaction tank. The powdered activated carbon dosage is 10.0 mg / L, the iodine value of the powdered activated carbon is 900 mg / g, and the particle size is 250 mesh.

[0054] The reaction pool uses an immersed flat membrane made of Al2O3. The spacing between the immersed flat membranes is 35mm. There are 5 ceramic membrane reactors with a pore size of 60-100nm. The operating pressure is 0.1-0.3MPa and the membrane flux is 180L / (m 2 ·h).

[0055] The water from a Yellow River source reservoir (permanganate index: 4.5 mg / L, 2-MIB: 120.5 ng / L, GSM: 26.4 ng / L, particle number: 10773 CNT / mL, turbidity: 12.45 NTU) was treated using conventional treatment process (mixing + flocculation + precipitation) + ozone powdered carbon coupled membrane system.

[0056] After testing, the effluent permanganate index was 0.8 mg / L, the 2-MIB concentration was lower than the detection limit (<2.2 ng / L), the GSM concentration was lower than the detection limit (<3.8 ng / L), the average effluent particle number was 73 CNT / mL, the average effluent turbidity was 0.049 NTU, the average total effluent bacteria count was 137 CFU / mL, and bromate was not detected. The effluent water quality meets and exceeds the "National Drinking Water Quality Standard (GB5749-2022)".

[0057] Example 3

[0058] An ozone powder carbon coupled membrane system for simultaneous removal of odor and turbidity in drinking water, including a reaction tank, an ozone dosing system, a powder carbon dosing system, and a backwash system

[0059] A water inlet pipe 1 is provided at the upper part of the reaction tank, and the effluent flows into the water outlet pipe 12 under the action of a water pump and is then discharged.

[0060] The ozone dosing system includes a plurality of ozone dosing devices 6 and ozone ejectors 8 connected in sequence, and the total ozone dosage is 8.0 mg / L.

[0061] The ozone ejector 8 extends between the submerged flat membranes and is connected to the ozone dosing device 6 using an angle adjustment bracket 7, so that the ozone ejector can change its angle within a certain range. The angle between the ozone ejector outlet and the horizontal is 45°.

[0062] The powdered carbon dosing system includes a powdered carbon dosing device and a powder dosing ejector 4 and a water inlet 3 connected to the powdered carbon dosing device. The powder dosing ejector 4 and the water inlet 3 extend into the reaction tank. The powdered activated carbon dosage is 15.0 mg / L, the iodine value of the powdered activated carbon is 950 mg / g, and the particle size is 300 mesh.

[0063] The reaction pool uses an immersed flat membrane made of Al2O3. The spacing between the immersed flat membranes is 35mm. There are 5 ceramic membrane reactors with a pore size of 60-100nm. The operating pressure is 0.1-0.3MPa and the membrane flux is 150L / (m 2 ·h).

[0064] The water from a Yellow River source reservoir (permanganate index: 4.5 mg / L, 2-MIB: 120.5 ng / L, GSM: 26.4 ng / L, particle number: 10773 CNT / mL, turbidity: 12.45 NTU) was treated using conventional treatment process (mixing + flocculation + precipitation) + ozone powdered carbon coupled membrane system.

[0065] After testing, the effluent permanganate index was 0.7 mg / L, the 2-MIB concentration was lower than the detection limit (<2.2 ng / L), the GSM concentration was lower than the detection limit (<3.8 ng / L), the average effluent particle number was 56 CNT / mL, the average effluent turbidity was 0.045 NTU, the average effluent total bacteria count was 118 CFU / mL, and bromate was not detected. The effluent water quality meets and exceeds the "National Drinking Water Quality Standard (GB5749-2022)".

[0066] Comparative Example 1

[0067] The water from a Yellow River source reservoir (permanganate index: 4.5 mg / L, 2-MIB: 120.5 ng / L, GSM: 26.4 ng / L, particle number: 10773 CNT / mL, turbidity: 12.45 NTU) was treated using the existing pre-ozonation + conventional treatment process (mixing + flocculation + sedimentation + filtration) + ozone-biochar filter process. The effluent from the biochar filter entered the disinfection tank for disinfection. The total ozone dosage was 3.0 mg / L, of which the pre-ozone dosage was 1.0 mg / L and the post-ozone dosage was 2.0 mg / L.

[0068] After testing, the effluent permanganate index was 2.2 mg / L, the 2-MIB concentration was 19.1 ng / L, the GSM concentration was lower than the detection limit (<3.8 ng / L), the average effluent particle count was 574 CNT / mL, the average effluent turbidity was 0.16 NTU, the average effluent total bacteria count was 5872 CFU / mL, and bromate was not detected.

[0069] By comparing the effluent test results of the embodiment and the comparative example, it can be found that after treatment by the water purification process provided by the present invention, the organic matter, odor substances, particle count, turbidity and total bacteria count in the raw water can be effectively reduced, and the bromate content meets the standards, the treatment effect is stable and the operating cost is low.

[0070] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An ozone powder carbon coupled membrane system for simultaneous removal of odor and turbidity in drinking water, characterized by: The invention comprises a reaction tank, an ozone dosing system, a pulverized carbon dosing system and a backwashing system. A ceramic membrane filter device is arranged at the bottom of the reaction tank, and vertically arranged ceramic membranes (5) are evenly distributed on the ceramic membrane filter device.

2. The ozone powder carbon coupled membrane system for simultaneous removal of odor and turbidity in drinking water according to claim 1, characterized in that: An L-shaped water inlet pipe (1) is provided on one side of the top of the reaction tank; a water outlet pipe (12) is connected to the water outlet of the ceramic membrane filter device; a water pump (13) is connected to the water outlet pipe (12) via a flange; and water outlet from the ceramic membrane filter device is discharged through the water outlet pipe (12) under the action of the water pump (13).

3. The ozone powder carbon coupled membrane system for simultaneous removal of odor and turbidity in drinking water according to claim 2, characterized in that: The ceramic membrane (5) of the ceramic membrane filtration device adopts an immersed flat membrane, the spacing between the ceramic membranes (5) is 25-35 mm, the pore size of the ceramic membrane (5) is 60-100 nm, the operating pressure is 0.1-0.3 MPa, and the membrane flux is 150-200 L / (m 2 ·h).

4. The ozone powder carbon coupled membrane system for simultaneous removal of odor and turbidity in drinking water according to claim 1, characterized in that: The ozone dosing system comprises a plurality of ozone dosing devices (6), ozone ejectors (8) and ozone generators (9) connected in sequence; the ozone dosing devices (6) and the ozone generators (9) are connected via a pipeline; the ozone dosing devices (6) extend between the inner wall of the reaction tank and the ceramic membrane (5) and between each ceramic membrane (5); the ozone dosing devices (6) are connected to the ozone ejectors (8) via an angle adjustment bracket (7).

5. The ozone powder carbon coupled membrane system for simultaneous removal of odor and turbidity in drinking water according to claim 4, characterized in that: The total ozone dosage of the ozone dosing device (6) is set to 1.0-8.0 mg / L, the ozone dosage of a single ozone dosing device (6) is not higher than 1.0 mg / L, and the adjustment angle of the angle adjustment bracket (7) is 0-180°.

6. The ozone powder carbon coupled membrane system for simultaneous removal of odor and turbidity in drinking water according to claim 1, characterized in that: The powdered carbon dosing system comprises a powdered carbon dosing device and a powder dosing ejector (4) and a water inlet (3) connected to the powdered carbon dosing device. The powder dosing ejector (4) and the water inlet (3) extend into the reaction tank.

7. The ozone powder carbon coupled membrane system for simultaneous removal of odor and turbidity in drinking water according to claim 6, characterized in that: The powdered activated carbon used in the powdered carbon dosing system has an iodine value of not less than 900 mg / g and a particle size of not less than 200 meshes, and the powdered activated carbon dosage is set to 0.5-20.0 mg / L.

8. The ozone powder carbon coupled membrane system for simultaneous removal of odor and turbidity in drinking water according to claim 1, characterized in that: The backwash system comprises an emptying device (11) and a backwash water washing device (10). The strength of the backwash water in the backwash water washing device (10) is 10-25m 3 / (m 2 ·h), the backwash time is 3-5min.

9. The ozone powder carbon coupled membrane system for simultaneous removal of odor and turbidity in drinking water according to claim 1, characterized in that: An ozone destroyer (14) for destroying unreacted ozone is provided on the top of the reaction tank.

10. The ozone powder carbon coupled membrane system for simultaneous removal of odor and turbidity in drinking water according to claim 1, characterized in that: The water inlet pipe (1), the water outlet pipe (12), the emptying device (11), and the backwashing water washing device (10) are all made of 316L stainless steel, and valves are provided on the water inlet pipe (1), the water outlet pipe (12), the emptying device (11), and the backwashing water washing device (10).

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