Reverse osmosis membrane performance optimization control method and device

Abstract

The invention relates to the technical field of reverse osmosis membrane performance optimization, in particular to a control method and device for reverse osmosis membrane performance optimizing.The device comprises a machine body, a water inlet groove is formed in the upper surface of the machine body, a water inlet pipe is fixedly connected between the inner walls of the water inlet groove, and a water outlet is formed in the bottom face of the machine body; the output end of the water outlet communicates with a water outlet pipe and a control mechanism, and the control mechanism comprises a filtering detection assembly, a stirring assembly and a feeding assembly. According to the present invention, with the filtration detection assembly, the water source to enter the machine body can be preliminarily sieved, the turbidity of the water source entering the machine body can be detected, the efficiency of removing the suspended matter through the flocculation precipitation can be improved through the stirring assembly, and the material feeding assembly is matched with the filtration detection assembly so as to achieve the efficient filtration; a flocculating agent can be additionally put into the machine body according to needs, so that the turbidity of an inlet water source is reduced, and the water quality of the inlet water source is controlled.

Description

Technical Field

[0001] The invention relates to the technical field of reverse osmosis membrane performance optimization, and in particular to a control method and device for reverse osmosis membrane performance optimization. Background Art

[0002] Reverse osmosis membrane is a semipermeable membrane that only allows solvents to pass through, and has a high retention rate for solutes such as salts, organic matter, microorganisms, etc. Its pore size is very small, generally at the nanometer level. The operation of the reverse osmosis membrane is based on the principle of osmotic pressure. When the pure solvent and the solution are separated by a semipermeable membrane, the pure solvent will diffuse through the semipermeable membrane to the solution side. This phenomenon is called osmosis. If a pressure greater than the osmotic pressure is applied to one side of the solution, the solvent will flow from the solution side through the semipermeable membrane to the pure solvent side. This is reverse osmosis. Reverse osmosis membrane technology has extremely wide applications in many fields, such as drinking water purification, industrial water treatment, seawater desalination, and wastewater treatment and reuse.

[0003] During actual operation, the performance of the reverse osmosis membrane will be affected by many factors and gradually decline, among which the water quality of the inlet water is a major influencing factor. Excessive turbidity and suspended solids content of the inlet water will lead to physical blockage on the membrane surface. Silt, colloidal particles, etc. in the water will be deposited on the membrane surface to form a filter cake layer, increasing the resistance of the membrane and reducing the water flux. Even a small amount of large particles may scratch the membrane surface and destroy the structural integrity of the membrane. In addition, the water quality of the water source is not static. Whether it is surface water or groundwater, its composition may fluctuate due to seasonal changes, environmental pollution or other factors. Therefore, in order to improve the working efficiency of the reverse osmosis membrane and extend its service life, its performance needs to be optimized. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a control method and device for optimizing the performance of a reverse osmosis membrane, which can effectively solve the problem in the prior art that the turbidity of influent water has a significant impact on the performance of the reverse osmosis membrane.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a control method for optimizing the performance of a reverse osmosis membrane. The specific control method is as follows:

[0007] S1: Perform preliminary filtration on the water to be added to the device to remove impurities and large particles in the incoming water source;

[0008] S2: The turbidity of the incoming water is monitored in real time through the sensor. The sensor can monitor the content of suspended particles in the water. When the turbidity exceeds the set threshold, it indicates that there are more impurities in the water. At this time, the sensor will transmit an electrical signal to the controller, and the controller will process the received signal and make corresponding instructions to complete the turbidity monitoring of the incoming water source;

[0009] S3: The controller makes corresponding instructions according to the received signal. When the turbidity of the inlet water source is high, it is necessary to add additional flocculants into the device. The flocculants aggregate the suspended particles to form larger flocs through adsorption, neutralization, bridging and other effects, so that the suspended particles in the water can be better removed by flocculation and precipitation;

[0010] S4: Flocculation reaction and influent filtration. After the flocculant and suspended particles aggregate, larger flocs will be formed. Before the influent water source enters the reverse osmosis membrane, the flocs need to be filtered out to reduce the turbidity of the influent water source.

[0011] A control device for optimizing the performance of a reverse osmosis membrane comprises a body, wherein the upper surface of the body is provided with a water inlet groove, the inner walls of the water inlet groove are fixedly connected with a water inlet pipe, the bottom surface of the body is provided with a water outlet, and the output end of the water outlet is connected with a water outlet pipe;

[0012] A control mechanism, the control mechanism includes a filtering detection component, a stirring component and a feeding component, the filtering detection component includes a sieve plate fixedly connected between the inner walls of the water inlet pipe, a No. 1 shell is fixedly connected between the inner walls of the body, a plurality of water outlet holes are equidistantly arranged on the inner bottom surface of the No. 1 shell, the No. 1 shell is filled with activated carbon, a turbidity sensor is fixedly mounted on the inner top surface of the body through a bracket, and a controller is fixedly connected to the upper surface of the body.

[0013] According to the above-mentioned control device for optimizing the performance of a reverse osmosis membrane, the stirring assembly includes a motor fixedly connected to the upper surface of a body through a bracket, the output end of the motor is fixedly connected to a rotating shaft, the rotating shaft is rotatably connected to the inner top surface of the body through a bearing, and a plurality of stirring blades are fixedly connected to the rotating shaft at equal intervals in the circumferential direction.

[0014] According to the above-mentioned control device for optimizing the performance of a reverse osmosis membrane, the feeding assembly includes a support plate fixedly connected to the upper surface of the body, the upper surface of the support plate is fixedly connected to a No. 2 shell, the side wall of the support plate is fixedly connected to a mounting plate, the upper surface of the mounting plate is fixedly connected to an electric push rod through a bracket, a moving block is slidably connected in the No. 2 shell, a feed trough is provided on the upper surface of the No. 2 shell, a feed pipe is fixedly connected in the feed trough, the input end of the feed pipe is connected to a feed hopper, a discharge trough is provided on the bottom surface of the No. 2 shell, a discharge pipe is fixedly connected in the discharge trough, a material transport trough is provided on the upper surface of the moving block, the output end of the electric push rod is fixedly connected to the side wall of the moving block, and a baffle is fixedly connected to the side wall of the moving block close to the electric push rod.

[0015] According to the above-mentioned control device for optimizing the performance of a reverse osmosis membrane, the turbidity sensor is electrically connected to the controller, the controller is electrically connected to the electric push rod, the turbidity sensor is located above the first shell, and the rotating shaft is concentrically arranged with the body.

[0016] According to the above-mentioned control device for optimizing the performance of a reverse osmosis membrane, the plurality of stirring blades are all located in the body, and the plurality of stirring blades are all located above the first shell.

[0017] According to the above-mentioned control device for optimizing the performance of a reverse osmosis membrane, the discharge pipe passes through the upper surface of the body and is connected with the interior of the body, the upper surface of the baffle is fitted with the inner top surface of the No. 2 shell, the upper surface and bottom surface of the moving block are respectively fitted with the inner top surface and inner bottom surface of the No. 2 shell, the side walls of the moving block are fitted with the inner walls of the No. 2 shell, and the diameters of the feed trough, material transport trough and discharge trough are the same.

[0018] According to the above-mentioned control device for optimizing the performance of a reverse osmosis membrane, the second shell is arranged horizontally, and the mounting plate and the second shell are in a parallel positional relationship.

[0019] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0020] 1. The present invention can preliminarily screen the water source to be entered into the body through the filter detection component, so as to remove impurities and large particles in the water, which is conducive to better control of water quality in the future. At the same time, it can also detect the turbidity of the water source entering the body and detect the content of suspended matter inside it. When the turbidity exceeds the set threshold, it indicates that there are more impurities in the water. At this time, the sensor will transmit an electrical signal to the controller, and the controller will process the received signal and make corresponding instructions, so as to complete the turbidity monitoring of the incoming water source.

[0021] 2. The present invention provides a stirring component to enable the flocculant to fully contact with the suspended particles in the water. The flocculant aggregates the suspended particles to form larger flocs through adsorption, neutralization, bridging and other effects. Stirring allows the flocculant to better combine with the suspended particles in the water. If not stirred, the flocculant diffuses slowly in the water and can only act on local suspended particles, resulting in poor flocculation effect. Therefore, by adding stirring measures, the efficiency of removing suspended matter by flocculation sedimentation can be improved.

[0022] 3. The present invention sets a feeding component and cooperates with a filtering detection component. When the internal suspended matter content of the incoming water source is high, the controller will start the electric push rod to operate the feeding component after receiving the signal and making a judgment, and additional flocculant will be added into the body. The additional flocculant can improve the effect of flocculation and sedimentation to remove suspended matter, thereby reducing the turbidity of the incoming water source and achieving control of the water quality of the incoming water source. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic flow chart of the control method of the present invention;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure analysis of the present invention;

[0026] Figure 3 A schematic diagram of a three-dimensional structural analysis of the present invention from another viewing angle;

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure analysis of the present invention from another viewing angle;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the present invention;

[0029] Figure 6 for Figure 4 Enlarged view of point A in the middle.

[0030] Figure numerals: 1. body; 2. water inlet pipe; 3. water outlet pipe; 4. sieve plate; 5. shell No. 1; 6. water outlet hole; 7. turbidity sensor; 8. controller; 9. motor; 10. rotating shaft; 11. stirring blade; 12. support plate; 13. shell No. 2; 14. mounting plate; 15. electric push rod; 16. moving block; 17. feed trough; 18. feed pipe; 19. feed hopper; 20. discharge trough; 21. discharge pipe; 22. material transport trough; 23. baffle. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The present invention will be further described below in conjunction with the embodiments.

[0033] Example: Refer to Figures 1 to 6 , a control method for optimizing the performance of a reverse osmosis membrane, the specific control method is as follows:

[0034] S1: Perform preliminary filtration on the water to be added to the device to remove impurities and large particles in the incoming water source;

[0035] S2: The turbidity of the incoming water is monitored in real time through the sensor. The sensor can monitor the content of suspended particles in the water. When the turbidity exceeds the set threshold, it indicates that there are more impurities in the water. At this time, the sensor will transmit an electrical signal to the controller, and the controller will process the received signal and make corresponding instructions to complete the turbidity monitoring of the incoming water source;

[0036] S3: The controller makes corresponding instructions according to the received signal. When the turbidity of the inlet water source is high, it is necessary to add additional flocculants into the device. The flocculants aggregate the suspended particles to form larger flocs through adsorption, neutralization, bridging and other effects, so that the suspended particles in the water can be better removed by flocculation and precipitation;

[0037] S4: Flocculation reaction and influent filtration. After the flocculant and suspended particles aggregate, larger flocs will be formed. Before the influent water source enters the reverse osmosis membrane, the flocs need to be filtered out to reduce the turbidity of the influent water source.

[0038] A control device for optimizing the performance of a reverse osmosis membrane comprises a body 1, a water inlet groove is arranged on the upper surface of the body 1, a water inlet pipe 2 is fixedly connected between the inner walls of the water inlet groove, a water outlet is arranged on the bottom surface of the body 1, an output end of the water outlet is connected to a water outlet pipe 3, a control mechanism, the control mechanism comprises a filtering detection component, a stirring component and a feeding component, the filtering detection component comprises a sieve plate 4 fixedly connected between the inner walls of the water inlet pipe 2, a No. 1 shell 5 is fixedly connected between the inner walls of the body 1, a plurality of water outlet holes 6 are equidistantly arranged on the inner bottom surface of the No. 1 shell 5, activated carbon is filled in the No. 1 shell 5, a turbidity sensor 7 is fixedly installed on the inner top surface of the body 1 through a bracket, a controller 8 is fixedly connected to the upper surface of the body 1, the stirring component The invention comprises a motor 9 fixedly connected to the upper surface of the machine body 1 through a bracket, the output end of the motor 9 is fixedly connected to a rotating shaft 10, the rotating shaft 10 is rotatably connected to the inner top surface of the machine body 1 through a bearing, a plurality of stirring blades 11 are fixedly connected to the rotating shaft 10 at equal intervals in the circumferential direction, and a feeding assembly comprises a supporting plate 12 fixedly connected to the upper surface of the machine body 1, a No. 2 shell 13 is fixedly connected to the upper surface of the supporting plate 12, a mounting plate 14 is fixedly connected to the side wall of the supporting plate 12, an electric push rod 15 is fixedly connected to the upper surface of the mounting plate 14 through a bracket, a moving block 16 is slidably connected in the No. 2 shell 13, a feeding trough 17 is provided on the upper surface of the No. 2 shell 13, a feeding pipe 18 is fixedly connected in the feeding trough 17, and a feeding pipe 18 is fixedly connected in the feeding trough 17. The input end of the second housing 13 is connected with a feed hopper 19, a discharge trough 20 is provided on the bottom surface of the second housing 13, a discharge pipe 21 is fixedly connected in the discharge trough 20, a material transport trough 22 is provided on the upper surface of the moving block 16, an output end of the electric push rod 15 is fixedly connected to the side wall of the moving block 16, a baffle 23 is fixedly connected to the side wall of the moving block 16 close to the electric push rod 15, a turbidity sensor 7 is electrically connected to the controller 8, the controller 8 is electrically connected to the electric push rod 15, the turbidity sensor 7 detects the turbidity of the water source and transmits the signal to the controller 8, the controller 8 judges the signal after receiving it, and makes a relative instruction to decide whether to start the feeding component, and the turbidity sensor 7 is located above the first housing 5 The rotating shaft 10 is concentrically arranged with the body 1, and the multiple stirring blades 11 are all located in the body 1. The multiple stirring blades 11 are all located above the No. 1 shell 5. The discharge pipe 21 passes through the upper surface of the body 1 and is connected with the inside of the body 1. The upper surface of the baffle 23 fits with the inner top surface of the No. 2 shell 13, so that the feeding assembly can operate normally. The upper surface and bottom surface of the moving block 16 fit with the inner top surface and inner bottom surface of the No. 2 shell 13 respectively, and the side walls of the moving block 16 fit with the inner walls of the No. 2 shell 13 on both sides. The diameters of the feed trough 17, the material transport trough 22 and the discharge trough 20 are the same. The No. 2 shell 13 is horizontally arranged, and the mounting plate 14 and the No. 2 shell 13 are in a parallel position relationship.

[0039] The working principle of the present invention is as follows: when in use, the device is connected between the water source and the reverse osmosis membrane, and the water quality of the water source of the reverse osmosis membrane is controlled by the device. The water source enters the body 1 through the water inlet pipe 2, and the large particles and impurities contained therein will be screened out by the sieve plate 4 to achieve preliminary filtration. The first shell 5 is filled with activated carbon, which is mainly used to remove the flocculents after the suspended matter is flocculated, and at the same time increase the residence time of the water source in the body 1 to improve the flocculation effect. When the water source enters the body 1, the motor 9 is started, and the motor 9 drives the rotating shaft 10 to rotate. The rotation of the rotating shaft 10 drives multiple stirring blades 11 to rotate to improve the flocculation effect of the flocculant. At the same time, after the water source enters the body 1, the turbidity sensor 7 will detect the turbidity of the water source in real time, detect the content of suspended matter inside it, and transmit the signal to the controller 8. If the turbidity of the water source exceeds the set threshold, the controller 8 will make a judgment based on the signal. After the turbidity exceeds the threshold, the electric push rod 15 will be started to run the feeding component;

[0040] After the electric push rod 15 is started, its output end will drive the moving block 16 to move. The feed hopper 19 is pre-filled with the flocculant to be added. Under the action of gravity, it will fall into the material transport trough 22 of the moving block 16 through the feed pipe 18 and the feed trough 17. The electric push rod 15 controls the moving block 16 to move toward the discharge trough 20. When the material transport trough 22 and the discharge trough 20 have an overlapping part, the flocculant inside the material transport trough 22 will fall into the machine body 1 through the discharge pipe 21 under the action of gravity. When the moving block 16 moves, the baffle 23 moves with it to block the feed trough 17, which can avoid There is no leakage or waste of flocculant. After the feeding is completed, the moving block 16 will return to its original position driven by the electric push rod 15. When the material transport trough 22 overlaps with the feeding trough 17, the flocculant will enter the material transport trough 22 through the feeding pipe 18 and the feeding trough 17 again to achieve re-loading and prepare for the next flocculant feeding. After the fed flocculant enters the body 1, it will flocculate and precipitate with the suspended matter in the incoming water source under the stirring of the stirring component, thereby reducing the turbidity of the water source, achieving the control of the water quality of the incoming water source, and also achieving the optimization of the subsequent reverse osmosis membrane performance.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control method for optimizing reverse osmosis membrane performance, characterized in that: The specific control methods are as follows: S1: Perform preliminary filtration on the water to be added to the device to remove impurities and large particles in the incoming water source; S2: The turbidity of the incoming water is monitored in real time through the sensor. The sensor can monitor the content of suspended particles in the water. When the turbidity exceeds the set threshold, it indicates that there are more impurities in the water. At this time, the sensor will transmit an electrical signal to the controller, and the controller will process the received signal and make corresponding instructions to complete the turbidity monitoring of the incoming water source; S3: The controller makes corresponding instructions according to the received signal. When the turbidity of the inlet water source is high, it is necessary to add additional flocculants into the device. The flocculants aggregate the suspended particles to form larger flocs through adsorption, neutralization, bridging and other effects, so that the suspended particles in the water can be better removed by flocculation and precipitation; S4: Flocculation reaction and influent filtration. After the flocculant and suspended particles aggregate, larger flocs will be formed. Before the influent water source enters the reverse osmosis membrane, the flocs need to be filtered out to reduce the turbidity of the influent water source.

2. A control device for optimizing reverse osmosis membrane performance, characterized in that: It comprises a body (1), the upper surface of the body (1) is provided with a water inlet groove, the inner wall of the water inlet groove is fixedly connected with a water inlet pipe (2), the bottom surface of the body (1) is provided with a water outlet, and the output end of the water outlet is connected with a water outlet pipe (3); A control mechanism, the control mechanism comprising a filtering detection component, a stirring component and a feeding component, the filtering detection component comprising a sieve plate (4) fixedly connected between the inner walls of the water inlet pipe (2), a first shell (5) fixedly connected between the inner walls of the body (1), a plurality of water outlet holes (6) equidistantly arranged on the inner bottom surface of the first shell (5), the first shell (5) filled with activated carbon, a turbidity sensor (7) fixedly mounted on the inner top surface of the body (1) via a bracket, and a controller (8) fixedly connected to the upper surface of the body (1).

3. A control device for optimizing reverse osmosis membrane performance according to claim 2, characterized in that: The stirring assembly comprises a motor (9) fixedly connected to the upper surface of the machine body (1) via a bracket, the output end of the motor (9) is fixedly connected to a rotating shaft (10), the rotating shaft (10) is rotatably connected to the inner top surface of the machine body (1) via a bearing, and a plurality of stirring blades (11) are fixedly connected to the rotating shaft (10) at equal intervals in the circumferential direction.

4. A control device for optimizing reverse osmosis membrane performance according to claim 3, characterized in that: The feeding assembly comprises a support plate (12) fixedly connected to the upper surface of the machine body (1), a second housing (13) being fixedly connected to the upper surface of the support plate (12), a mounting plate (14) being fixedly connected to the side wall of the support plate (12), an electric push rod (15) being fixedly connected to the upper surface of the mounting plate (14) via a bracket, a moving block (16) being slidably connected inside the second housing (13), a feeding trough (17) being provided on the upper surface of the second housing (13), and a A feed pipe (18) is fixedly connected, and the input end of the feed pipe (18) is connected to a feed hopper (19). The bottom surface of the No. 2 shell (13) is provided with a discharge trough (20), and a discharge pipe (21) is fixedly connected inside the discharge trough (20). A material transport trough (22) is provided on the upper surface of the moving block (16). The output end of the electric push rod (15) is fixedly connected to the side wall of the moving block (16), and a baffle (23) is fixedly connected to the side wall of the moving block (16) close to the electric push rod (15).

5. A control device for optimizing reverse osmosis membrane performance according to claim 4, characterized in that: The turbidity sensor (7) is electrically connected to the controller (8), and the controller (8) is electrically connected to the electric push rod (15). The turbidity sensor (7) is located above the first housing (5), and the rotating shaft (10) is concentrically arranged with the machine body (1).

6. A control device for optimizing reverse osmosis membrane performance according to claim 3, characterized in that: The plurality of stirring blades (11) are all located in the machine body (1), and the plurality of stirring blades (11) are all located above the first shell (5).

7. A control device for optimizing reverse osmosis membrane performance according to claim 4, characterized in that: The discharge pipe (21) passes through the upper surface of the body (1) and is connected to the interior of the body (1); the upper surface of the baffle (23) fits with the inner top surface of the No. 2 shell (13); the upper surface and the bottom surface of the moving block (16) fit with the inner top surface and the inner bottom surface of the No. 2 shell (13) respectively; the side walls of the moving block (16) fit with the inner walls of the No. 2 shell (13); the feed trough (17), the transport trough (22) and the discharge trough (20) have the same diameter.

8. A control device for optimizing reverse osmosis membrane performance according to claim 4, characterized in that: The second housing (13) is arranged horizontally, and the mounting plate (14) and the second housing (13) are in a parallel position relationship.

Images