Single DTRO membrane test system

Abstract

The invention discloses a single DTRO membrane testing system, relates to the field of DTRO membrane technology research and development, and aims to solve the problems of low efficiency and high cost of existing DTRO membrane technology research and development. The system comprises a testing tank, the testing tank is used for containing feed liquid, a water inlet of a testing device is connected with the testing tank through a water inlet pipeline, and a booster pump and a high-pressure pump are sequentially arranged on the water inlet pipeline; a first water outlet of the DTRO membrane testing device is connected with a first concentrated water pipeline and a second concentrated water pipeline which are connected in parallel, the first concentrated water pipeline is connected with the testing groove, the second concentrated water pipeline is connected with a water inlet pipeline at the inlet end of the high-pressure pump, and the monitoring assembly is arranged on the water inlet pipeline, the first concentrated water pipeline and the second concentrated water pipeline. The monitoring assembly is used for monitoring the temperature, pressure, conductivity, flow and PH of feed liquid in real time, the water production tank is connected with a second water outlet of the DTRO membrane testing device through a water production pipeline, and the controller is in signal connection with the booster pump, the high-pressure pump and the monitoring assembly, so that the research and development efficiency of the DTRO membrane technology can be improved, and the cost is saved.

Description

Technical Field

[0001] The present invention relates to the field of DTRO membrane technology research and development, and more specifically, to a single-chip DTRO membrane testing system. Background Art

[0002] DTRO (Disc tube reverse osmosis) technology is a highly efficient membrane separation technology. Compared with traditional spiral reverse osmosis membranes, it has more significant advantages in high pressure resistance and anti-pollution performance. It is a specific membrane component type specially designed for high-concentration sewage treatment. It is widely used in many key fields such as landfill leachate treatment, desulfurization wastewater and chemical wastewater, and zero discharge of industrial wastewater. Its core technical component is the disc tube membrane column, which is a clever combination of reverse osmosis membrane and hydraulic guide plate, which is stabilized by the central tie rod and end plate, and then placed in the pressure-resistant casing to form a complete membrane column structure. Due to the highly integrated characteristics of the DTRO membrane component structure, each membrane is closely connected and fixed by the guide plate and the central tie rod, which makes it extremely difficult to disassemble and clean the membrane separately, and also makes the operation of DTRO membrane in the field of wastewater treatment complicated. It also makes the testing of new DTRO membrane materials in the research and development stage very inconvenient.

[0003] In the current DTRO membrane technology research and development, there are significant limitations. Most of the existing DTRO membrane technologies are in an overall operation mode, which makes it difficult to conduct detailed testing and analysis at the level of a single membrane.

[0004] Therefore, how to solve the problem of low research and development efficiency and high cost of existing DTRO membrane technology is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a single-piece DTRO membrane testing system, which can effectively avoid blind R&D operations through multi-dimensional monitoring and analysis of single-piece membrane testing results, greatly improve the accuracy and efficiency of DTRO membrane application, and fundamentally save DTRO membrane resource consumption and investment in manpower and material costs from R&D to application.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A single-chip DTRO membrane testing system, comprising:

[0008] A test tank, which is used to hold the liquid;

[0009] A DTRO diaphragm test device, wherein the water inlet of the DTRO diaphragm test device is connected to the test tank through a water inlet pipe, a booster pump and a high-pressure pump are arranged on the water inlet pipe in sequence, a first water outlet of the DTRO diaphragm test device is connected to a first concentrated water pipe and a second concentrated water pipe connected in parallel, the first concentrated water pipe is connected to the test tank, and the second concentrated water pipe is connected to the water inlet pipe at the inlet end of the high-pressure pump;

[0010] A monitoring component is provided in the water inlet pipe, the first concentrated water pipe and the second concentrated water pipe, and the monitoring component is used to monitor the temperature, pressure, conductivity, flow rate and pH of the feed liquid in real time;

[0011] A water production tank is connected to the second water outlet of the DTRO membrane testing device through a water production pipeline;

[0012] The controller is signal-connected to the booster pump, the high-pressure pump and the monitoring component.

[0013] Preferably, both the water inlet pipe and the second concentrated water pipe are provided with a check valve, and the check valve on the water inlet pipe is located at the outlet end of the high-pressure pump.

[0014] Preferably, the high-pressure pump is provided with a frequency converter connected to the controller signal.

[0015] Preferably, the monitoring component includes a first pressure gauge and a second pressure gauge, the first pressure gauge is arranged between the check valve and the DTRO diaphragm testing device, the second pressure gauge is arranged in the first concentrated water pipeline, and the first pressure gauge and the second pressure gauge are both connected to a ball valve.

[0016] Preferably, the monitoring component also includes a pressure switch, a first pressure transmitter and a second pressure transmitter, all of which are connected to the controller signal. The pressure switch is arranged between the high-pressure pump and the check valve, the first pressure transmitter is arranged between the check valve and the first pressure gauge, and the second pressure transmitter is arranged between the second pressure gauge and the test slot.

[0017] Preferably, the monitoring component also includes a temperature sensor, a first conductivity meter, a second conductivity meter, a pH online detector, a first flow meter, a second flow meter and a third flow meter, all of which are connected to the controller signal. The temperature sensor is arranged in the test tank, the first conductivity meter, the pH online detector and the first flow meter are arranged at the outlet end of the booster pump in sequence, the second conductivity meter is arranged in the water production tank, the second flow meter is arranged in the second concentrated water pipeline, and the third flow meter is between the second pressure transmitter and the test tank.

[0018] Preferably, butterfly valves are provided between the test tank and the booster pump, the inlet end of the high-pressure pump, between the check valve and the first pressure transmitter, between the DTRO diaphragm test device and the first pressure gauge, and between the DTRO diaphragm test device and the second pressure gauge.

[0019] Preferably, both the test tank and the water production tank are transparent containers, and both the test tank and the water production tank are provided with scales.

[0020] Preferably, the DTRO diaphragm testing device is a cylindrical structure, and the DTRO diaphragm testing device includes a detachably connected upper flange and a lower flange, and the upper flange and the lower flange are both provided with a coaxial circular trough body, the outer periphery of the trough body is provided with an annular groove, and a sealing member is provided in the annular groove, the upper flange is provided with a water inlet connected to the trough body, and the lower flange is provided with a first water outlet and a second water outlet connected to the trough body, the second water outlet is provided in the middle of the trough body, and the water inlet and the first water outlet are both provided at the outer edge of the trough body.

[0021] Preferably, the outer edges of the upper flange and the lower flange are each provided with a plurality of bolt holes, and the plurality of bolt holes are arranged in a one-to-one correspondence.

[0022] The single-piece DTRO membrane testing system provided by the present invention includes a test tank, a DTRO diaphragm testing device, a booster pump, a high-pressure pump, a monitoring component, a water production tank and a controller. Specifically, the controller is signal-connected with the booster pump, the high-pressure pump and the monitoring component, and the operating status of the booster pump, the high-pressure pump and the monitoring component is controlled by the controller. The test tank is used to hold slurry, and the water inlet of the DTRO diaphragm testing device is connected to the test tank through an inlet pipe. The inlet pipe is sequentially provided with a booster pump and a high-pressure pump. The booster pump is controlled to operate by the controller, so that the slurry in the test tank is extracted and the pressure of the slurry is initially increased. The pressurized slurry enters the high-pressure pump. By controlling the operation of the high-pressure pump, the pressure of the slurry is further increased, and the pressurized slurry is transported to the DTRO diaphragm testing device through the inlet pipe and the inlet.

[0023] The first water outlet of the DTRO diaphragm test device is connected to the first concentrated water pipeline and the second concentrated water pipeline in parallel, the first concentrated water pipeline is connected to the test tank, and the second concentrated water pipeline is connected to the water inlet pipeline at the inlet end of the high-pressure pump. When the water inlet pipeline continuously supplies the feed liquid to the DTRO test device, part of the concentrated water in the DTRO diaphragm test device flows into the test tank through the first concentrated water pipeline, and part of it flows into the water inlet pipeline between the booster pump and the high-pressure pump through the second concentrated water pipeline. The second water outlet of the DTRO diaphragm test device is connected to the water production tank through the water production pipeline, so that the produced water in the DTRO diaphragm test device enters the water production tank through the water production pipeline. The monitoring component is arranged on the water inlet pipeline, the first concentrated water pipeline and the second concentrated water pipeline. The temperature, pressure, conductivity, flow rate and pH of the feed liquid are monitored in real time through the monitoring component, and the measured temperature, pressure, conductivity, flow rate and pH signals are sent to the controller. The controller analyzes and judges various data collected during the test. When the test effect reaches the expected target, the controller controls the booster pump and the high-pressure pump to stop running.

[0024] The single-piece DTRO membrane testing system set up in the above manner monitors the temperature, pressure, conductivity, flow rate and pH of the feed liquid in real time through monitoring components during the test process. Through multi-dimensional monitoring and analysis of the single-piece membrane test results, blind R&D operations can be effectively avoided, the accuracy and efficiency of DTRO membrane application can be greatly improved, and the resource consumption and human and material cost investment from R&D to application of DTRO membranes can be fundamentally saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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 description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the process flow of the single-chip DTRO membrane testing system provided by the present invention;

[0027] Figure 2 A schematic diagram of the process flow of the single-chip DTRO membrane testing system provided by the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the upper flange provided by the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the lower flange provided by the present invention;

[0030] Figure 5 A top view of the upper flange provided by the present invention;

[0031] Figure 6 This is a top view of the lower flange provided by the present invention.

[0032] Reference numerals:

[0033] 1-test tank; 2-DTRO diaphragm test device, 21-upper flange, 211-water inlet, 22-lower flange, 221-first water outlet, 222-second water outlet; 3-water inlet pipeline; 4-boosting pump; 5-high-pressure pump; 6-first concentrated water pipeline; 7-second concentrated water pipeline; 8-monitoring component, 801-pressure switch, 802-first pressure transmitter, 803-second pressure transmitter, 804-temperature sensor, 805-first conductivity meter, 806-second conductivity meter, 807-PH online detector, 808-first flow meter, 809-second flow meter, 810-third flow meter; 9-water production tank; 10-water production pipeline; 11-check valve; 12-frequency converter; 13-first pressure gauge; 14-second pressure gauge; 15-ball valve; 16-butterfly valve; 17-seal; 18-bolt hole. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The core of the present invention is to provide a single-piece DTRO membrane testing system, which can effectively avoid blind R&D operations through multi-dimensional monitoring and analysis of the test results of the single-piece membrane, greatly improve the accuracy and efficiency of DTRO membrane application R&D, and fundamentally save the resource consumption and human and material cost investment in the process from R&D to application of DTRO membranes.

[0037] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A single-chip DTRO membrane testing system includes a testing tank 1, a DTRO membrane testing device 2, a booster pump 4, a high-pressure pump 5, a monitoring component 8, a water production tank 9 and a controller.

[0038] Specifically, the controller is signal-connected with the booster pump 4, the high-pressure pump 5 and the monitoring component 8, and the operating status of the booster pump 4, the high-pressure pump 5 and the monitoring component 8 is controlled by the controller. The test tank 1 is used to contain liquid. The water inlet 211 of the DTRO diaphragm testing device 2 is connected to the test tank 1 through the water inlet pipe 3. The booster pump 4 and the high-pressure pump 5 are sequentially arranged on the water inlet pipe 3. The booster pump 4 is controlled by the controller to operate, so as to extract the liquid in the test tank 1 and preliminarily increase the pressure of the liquid. The pressurized liquid enters the high-pressure pump 5. By controlling the operation of the high-pressure pump 5, the pressure of the liquid is further increased, and the pressurized liquid is transported to the DTRO diaphragm testing device 2 through the water inlet pipe 3 and the water inlet 211.

[0039] The first water outlet 221 of the DTRO diaphragm test device 2 is connected to the first concentrated water pipeline 6 and the second concentrated water pipeline 7 in parallel. The first concentrated water pipeline 6 is connected to the test tank 1, and the second concentrated water pipeline 7 is connected to the water inlet pipeline 3 at the inlet end of the high-pressure pump 5. When the water inlet pipeline 3 continuously supplies the feed liquid to the DTRO diaphragm test device 2, the concentrated water in the DTRO diaphragm test device 2 flows into the test tank 1 through the first concentrated water pipeline 6. During the test, a part of the concentrated water flows into the water inlet pipeline 3 between the booster pump 4 and the high-pressure pump 5 through the second concentrated water pipeline 7. The second water outlet 222 of the DTRO diaphragm test device 2 is connected to the test tank 1. The water production pipeline 10 is connected to the water production tank 9 so that the water produced in the DTRO membrane test device 2 enters the water production tank 9 through the water production pipeline 10. The monitoring component 8 is arranged on the water inlet pipeline 3, the first concentrated water pipeline 6 and the second concentrated water pipeline 7. The temperature, pressure, conductivity, flow rate and pH of the feed liquid are monitored in real time through the monitoring component 8, and the measured temperature, pressure, conductivity, flow rate and pH signals are sent to the controller. The controller analyzes and judges various data collected during the cleaning / testing process. When the test effect reaches the expected goal, the controller controls the boost pump 4 and the high-pressure pump 5 to stop running.

[0040] The single-chip DTRO membrane testing system configured in the above manner monitors the temperature, pressure, conductivity, flow rate and pH of the feed liquid in real time through the monitoring component 8 during the test process. Through multi-dimensional monitoring and analysis of the single-chip membrane test effect, blind R&D operations can be effectively avoided, and the accuracy and efficiency of DTRO membrane application R&D can be greatly improved, fundamentally saving the resource consumption and human and material cost investment in the process from R&D to application of DTRO membranes.

[0041] In the above embodiment, both the water inlet pipe 3 and the second concentrated water pipe 7 are provided with a check valve 11. The check valve 11 on the water inlet pipe 3 is located at the outlet end of the high-pressure pump 5, and the check valve 11 on the second concentrated water pipe 7 is located at the outlet end of the second flowmeter 809.

[0042] It should be noted that, by providing the check valve 11, the medium is only allowed to flow in one direction and the reverse direction is prevented, so that the backflow of water can be prevented to prevent accidents.

[0043] In the above case, the high pressure pump 5 is provided with a frequency converter 12 which is connected to the controller signal.

[0044] It can be understood that the speed of the high-pressure pump 5 is adjusted by the frequency converter 12 so that the pressure of the washing liquid gradually rises to a predetermined pressure value required by the diaphragm, and the washing liquid reaching the predetermined pressure enters the water inlet 211 of the DTRO diaphragm testing device 2 through the check valve 11.

[0045] Furthermore, the monitoring assembly 8 includes a first pressure gauge 13 and a second pressure gauge 14 . The first pressure gauge 13 is disposed between the check valve 11 and the DTRO diaphragm testing device 2 , and the second pressure gauge 14 is disposed in the first concentrated water pipeline 6 . Both the first pressure gauge 13 and the second pressure gauge 14 are connected to a ball valve 15 .

[0046] It should be noted that the first pressure gauge 13 is provided to measure the pressure of the feed liquid in the water inlet pipe 3 in real time and display it, and the second pressure gauge 14 is provided to measure the pressure of the concentrated water in the first concentrated water pipe 6 in real time and display it.

[0047] Among them, the pressure gauge is used to measure the pressure in the pipeline system, and the ball valve 15 is used to control the flow of the fluid. The pressure gauge needs to monitor and control the system pressure through the ball valve 15. The ball valve 15 can be used as a switch to facilitate the operator to control the pressure gauge. For example, when the pressure gauge needs to be repaired or replaced, it can be closed through the ball valve 15 to avoid sudden release of system pressure and cause safety hazards.

[0048] In the above embodiment, the monitoring component 8 also includes a pressure switch 801, a first pressure transmitter 802 and a second pressure transmitter 803, all of which are connected to the controller signal. The pressure switch 801 is arranged between the high-pressure pump 5 and the check valve 11, the first pressure transmitter 802 is arranged between the check valve 11 and the first pressure gauge 13, and the second pressure transmitter 803 is arranged between the second pressure gauge 14 and the test slot 1.

[0049] It can be understood that the first pressure transmitter 802 is used to monitor the pressure of the liquid flowing in the water inlet pipe 3 in real time, and convert the measured data information into an electrical signal and send it to the controller. The second pressure transmitter 803 is used to monitor the pressure of the liquid flowing in the first concentrated water pipe 6 in real time, and convert the measured data information into an electrical signal and send it to the controller for precise control. When the measured pressure reaches the rated value, the pressure switch 801 can issue an alarm or control signal.

[0050] On the basis of the above embodiment, the monitoring component 8 also includes a temperature sensor 804, a first conductivity meter 805, a second conductivity meter 806, a pH online detector 807, a first flow meter 808, a second flow meter 809 and a third flow meter 810, all of which are connected to the controller signal. The temperature sensor 804 is arranged in the test tank 1, the first conductivity meter 805, the pH online detector 807 and the first flow meter 808 are arranged at the outlet end of the booster pump 4 in sequence, the second conductivity meter 806 is arranged in the water production tank 9, the second flow meter 809 is arranged in the second concentrated water pipeline 7, and the third flow meter 810 is between the second pressure transmitter 803 and the test tank 1.

[0051] It should be noted that the temperature of the feed liquid is measured in real time by the temperature sensor 804 to ensure that the temperature of the feed liquid is within an appropriate range, because the temperature of the feed liquid will affect the test effect on the membrane; the conductivity of the feed liquid before and after entering the membrane is monitored in real time by the first conductivity meter 805 and the second conductivity meter 806. The change in conductivity can reflect the change in ion concentration in the feed liquid, and then infer the test effect of the membrane; the pH value of the feed liquid is monitored in real time by the pH online detector to ensure that the pH of the feed liquid meets the test requirements and ensure the effectiveness of the test; the flow rate of the feed liquid in the pipeline is measured by the first flow meter 808, the second flow meter 809 and the third flow meter 810 to ensure that the feed liquid can fully cover the membrane.

[0052] In the above embodiment, butterfly valves 16 are provided between the test tank 1 and the booster pump 4, between the inlet end of the high-pressure pump 5, between the check valve 11 and the first pressure transmitter 802, between the DTRO diaphragm test device 2 and the first pressure gauge 13, and between the DTRO diaphragm test device 2 and the second pressure gauge 14.

[0053] It is understandable that the butterfly valve 16 is mainly used for opening and closing or regulating the pipeline. By arranging the butterfly valve 16 on the first concentrated water pipeline 6 and the second concentrated water pipeline 7, the ratio of the outflow from the first water outlet 221 and the second water outlet 222 of the DTRO diaphragm test device 2 can be adjusted by adjusting the butterfly valve 16.

[0054] As a preferred embodiment, the test tank 1 and the water production tank 9 are both transparent containers, and scales are provided on the test tank 1 and the water production tank 9.

[0055] It should be noted that the staff can know the recovery rate of the feed liquid by observing the volume of the feed liquid in the test tank 1 and the water production tank 9.

[0056] Please refer to Figure 3 , Figure 4 , Figure 5 and Figure 6The DTRO diaphragm test device 2 is a cylindrical structure. The DTRO diaphragm test device 2 includes a detachably connected upper flange 21 and a lower flange 22. The upper flange 21 and the lower flange 22 are both provided with a coaxial circular trough body. The outer periphery of the trough body is provided with an annular groove. A sealing member 17 is provided in the annular groove. The upper flange 21 is provided with a water inlet 211 connected to the trough body. The lower flange 22 is provided with a first water outlet 221 and a second water outlet 222 connected to the trough body. The second water outlet 222 is provided in the middle of the trough body. The water inlet 211 and the first water outlet 221 are both provided at the outer edge of the trough body.

[0057] It can be understood that the circular groove bodies of the upper flange 21 and the lower flange 22 are spliced ​​into a mounting groove for installing a guide plate of a single membrane, and the mounting groove is sealed by a seal 17 to form a closed space in the mounting groove to prevent the cleaning liquid from flowing out from the gap between the upper flange 21 and the lower flange 22 during the cleaning process.

[0058] During the single membrane test, the feed liquid enters the installation tank from the water inlet 211 of the DTRO membrane test device 2 through the water inlet pipe 3. After the test, the produced water enters the water production tank 9 through the second water outlet 222, and the concentrated water enters the test tank 1 and the water inlet pipe 3 through the first water outlet 221, thereby completing the DTRO membrane test.

[0059] The unique structural design of the DTRO membrane test device 2 can ensure that the single membrane is firmly fixed while avoiding damage to the membrane, and at the same time ensure that the cleaning / testing liquid is evenly distributed in the chamber and fully contacts the membrane.

[0060] In the above embodiment, the outer edges of the upper flange 21 and the lower flange 22 are both provided with a plurality of bolt holes 18 , and the plurality of bolt holes 18 are arranged in a one-to-one correspondence.

[0061] It should be noted that a circle of bolt holes 18 are provided on both the upper flange 21 and the lower flange 22 , and the upper flange 21 and the lower flange 22 are connected by bolts.

[0062] DTRO contaminated membrane cleaning: During the membrane contamination cleaning process, a proper amount of cleaning liquid is placed in the test tank 1 to ensure that there is enough cleaning liquid in the test tank 1 for the entire cleaning process. The contaminated membrane is installed in the DTRO diaphragm test device 2, and all equipment, including the booster pump 4, the high-pressure pump 5, the check valve 11, the DTRO diaphragm test device 2, etc., are checked to ensure that they are in normal working condition. The booster pump 4 is started by the controller to extract the cleaning liquid in the test tank 1 and initially increase the pressure of the cleaning liquid. The pressurized cleaning liquid enters the high-pressure pump 5, and the high-pressure pump 5 is started to further increase the pressure of the cleaning liquid. The speed of the high-pressure pump 5 is adjusted by controlling the inverter 12 to gradually increase the pressure of the cleaning liquid to meet the predetermined pressure value required for diaphragm cleaning. The cleaning liquid that reaches the predetermined pressure enters the water inlet 211 of the DTRO diaphragm test device 2 through the check valve 11. The cleaning liquid fully contacts the single DTRO membrane in the DTRO diaphragm test device 2 and starts to clean the diaphragm. During the cleaning process, multiple monitoring instruments start working. The temperature of the cleaning liquid is measured in real time by the temperature sensor 804 to ensure that the temperature of the cleaning liquid is within the appropriate range, because the temperature will affect the cleaning effect. The conductivity of the cleaning liquid is monitored in real time by the first conductivity meter 805 and the second conductivity meter 806. The change in conductivity can reflect the change in ion concentration in the cleaning liquid, and then infer the contamination of the diaphragm and the cleaning effect. The pH online detector monitors the pH value of the cleaning liquid in real time to ensure that the pH of the cleaning liquid meets the cleaning requirements and ensures the effectiveness of the cleaning liquid. The first flow meter 808, the second flow meter 809 and the third flow meter 810 all measure the flow of the cleaning liquid in the pipeline in real time to ensure that the cleaning liquid can fully cover the diaphragm. The pressure switch 801, the first pressure transmitter 802, the second pressure transmitter 803, the first pressure gauge 13 and the second pressure gauge 14 monitor the pressure in the pipeline in real time to ensure that the pressure of the cleaning liquid is stable within the appropriate range. The first pressure transmitter 802 and the second pressure transmitter 803 convert the pressure signal into an electrical signal and transmit it to the control system for precise control. After the controller determines that the cleaning effect has reached the expected target based on the received monitoring data, it first controls the high-pressure pump 5 to stop, and then controls the booster pump 4 to stop. The controller analyzes various data collected during the cleaning process (such as inlet and outlet water conductivity, pressure difference, etc.) to evaluate the effect of this cleaning. Based on the analysis results, it can be determined whether further cleaning is needed or the cleaning parameters are adjusted, providing a reference for the next cleaning or diaphragm maintenance.

[0063] In terms of cleaning, since cleaning tests can be performed on single DTRO membranes, compared with traditional membrane group cleaning, the amount of cleaning liquid and parameters can be accurately controlled according to the actual contamination status of single DTRO membranes. For example, there is no need to oversupply cleaning liquid according to the overall estimate as in membrane group cleaning, which greatly reduces the consumption of cleaning liquid, avoids the situation of over-cleaning of lightly contaminated membranes and insufficient cleaning of heavily contaminated membranes caused by overall cleaning, greatly improves the uniformity of the cleaning effect, and significantly improves the cleaning efficiency of the entire membrane. When exploring cleaning solutions, with the help of small tests on single DTRO membranes, the appropriate cleaning solution can be quickly determined and applied to the entire membrane, avoiding the large amount of time, manpower and material resources consumed by repeatedly trying different cleaning parameters on the entire membrane, effectively reducing resource waste and cost expenditure.

[0064] New material DTRO diaphragm performance test: a prepared salt solution (sodium chloride solution or other salt solution) is placed in the test tank 1, and a new DTRO diaphragm is placed in the DTRO membrane test device 2. The salt solution enters the water inlet 211 of the DTRO diaphragm test device 2 through the booster pump 4 and the high-pressure pump 5. After being processed by the new DTRO diaphragm, the produced water enters the water production tank 9 from the second water outlet 222, and the concentrated water passes through the first water outlet 221, part of which circulates to the test tank 1, and part of which flows back to the water inlet pipe 3 between the booster pump 4 and the high-pressure pump 5. During the new DTRO membrane test process, the temperature sensor 804 measures the inlet temperature of the DTRO diaphragm test device 2 in real time, the first conductivity meter 805 and the second conductivity meter 806 monitor the conductivity of the inlet and produced water of the DTRO diaphragm device 2 in real time, and the pH online detector monitors the pH of the inlet water of the DTRO diaphragm test device 2 in real time. The first flow meter 808, the second flow meter 809 and the third flow meter 810 measure the inlet water and concentrated water flow of the DTRO diaphragm test device 2 in real time, and the pressure switch 801, the first pressure transmitter 802, the second pressure transmitter 803, the first pressure gauge 13 and the second pressure gauge 14 monitor the inlet water and concentrated water pressure of the DTRO diaphragm test device 2 in real time; when the predetermined water production recovery rate is reached, the control stops running.

[0065] Afterwards, the staff can analyze the water quality results of the produced water concentrate to determine the retention effect of the DTRO membrane, as well as changes in pressure, flow, etc. during operation, and evaluate the performance of the new DTRO membrane in multiple dimensions.

[0066] In terms of new membrane testing, only a single new membrane is needed to evaluate the performance of the new membrane.

[0067] Wastewater treatment: wastewater is placed in the test tank 1, and a single DTRO membrane is placed in the DTRO membrane test device 2. The wastewater enters the water inlet 211 of the DTRO membrane test device 2 through the booster pump 4 and the high-pressure pump 5, and is treated by the single DTRO membrane. The produced water enters the water production tank 9 from the second water outlet 222, and the concentrated water passes through the first water outlet 221, part of which circulates to the test tank 1, and part of which flows back to the water inlet pipe 3 between the booster pump 4 and the high-pressure pump 5. During the operation of the wastewater treatment, the temperature sensor 804 measures the inlet water temperature of the DTRO membrane test device 2 in real time, the first conductivity meter 805 and the second conductivity meter 806 monitor the conductivity of the inlet water and produced water of the DTRO membrane test device 2 in real time, and the pH online detector monitors the pH of the inlet water of the DTRO membrane test device 2 in real time. The first flow meter 808, the second flow meter 809 and the third flow meter 810 measure the inlet water and concentrated water flow of the DTRO diaphragm test device 2 in real time, and the pressure switch 801, the first pressure transmitter 802, the second pressure transmitter 803, the first pressure gauge 13 and the second pressure gauge 14 monitor the inlet water and concentrated water pressure of the DTRO diaphragm test device 2 in real time; when the concentrated water reaches the predetermined recovery rate, the control stops running.

[0068] Afterwards, the staff can judge the retention effect of the DTRO membrane based on the analysis of the water quality of the produced water concentrate, and judge the fouling of the DTRO membrane during operation based on the analysis of the pressure difference, providing a reliable reference for subsequent large-scale applications.

[0069] In terms of wastewater treatment, only a small amount of wastewater samples need to be tested on a single membrane device to preliminarily evaluate the treatment effect of the DTRO membrane on the wastewater. There is no need to use a large amount of wastewater as in previous membrane group tests. This greatly reduces the amount of experimental water, reduces manpower and material costs, and improves the efficiency of wastewater treatment process determination. It provides a more economical and efficient preliminary verification method for the application of DTRO membranes in the field of wastewater treatment, and has strongly promoted the optimization and development of DTRO membrane technology in related fields.

[0070] Through the coordinated work of these systems, it is possible to achieve precise cleaning, performance testing, data collection and analysis of single DTRO membranes, performance testing of new DTRO membranes, and detection of the treatment effects of DTRO membranes on new wastewaters, thereby providing reliable data for DTRO membrane group cleaning, new material DTRO membrane performance testing, and wastewater treatment applications.

[0071] In summary, the single-piece DTRO membrane testing system provided by the present invention establishes a scientific cleaning / testing scheme screening through the testing of the single-piece DTRO membrane, can apply the optimal cleaning scheme determined by the single-piece DTRO membrane to the cleaning of the entire membrane, can test the performance of the new DTRO membrane, and can generalize the evaluation results of the treatment effect of the single-piece DTRO membrane on wastewater to the membrane group level, thereby avoiding the waste of resources, time consumption and membrane damage risk caused by blind exploration on the entire membrane, extending the service life of the DTRO membrane, and improving the overall economy and operation efficiency of the DTRO membrane system.

[0072] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0073] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0074] The above is a detailed introduction to a single-chip DTRO membrane testing system provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A single-chip DTRO membrane testing system, characterized in that: include: A test tank (1), wherein the test tank (1) is used to hold a feed liquid; A DTRO diaphragm test device (2), wherein a water inlet (211) of the DTRO diaphragm test device (2) is connected to the test tank (1) via a water inlet pipe (3), a booster pump (4) and a high-pressure pump (5) are provided on the water inlet pipe (3) in sequence, a first water outlet (221) of the DTRO diaphragm test device (2) is connected to a first concentrated water pipe (6) and a second concentrated water pipe (7) connected in parallel, the first concentrated water pipe (6) being connected to the test tank (1), and the second concentrated water pipe (7) being connected to the water inlet pipe (3) at the inlet end of the high-pressure pump (5); A monitoring component (8) is provided in the water inlet pipeline (3), the first concentrated water pipeline (6) and the second concentrated water pipeline (7), and the monitoring component (8) is used to monitor the temperature, pressure, conductivity, flow rate and pH of the feed liquid in real time; A water production tank (9) connected to the second water outlet (222) of the DTRO membrane testing device (2) via a water production pipeline (10); A controller is signal-connected to the boost pump (4), the high-pressure pump (5) and the monitoring component (8).

2. The monolithic DTRO membrane testing system according to claim 1, characterized in that: Both the water inlet pipeline (3) and the second concentrated water pipeline (7) are provided with a check valve (11), and the check valve (11) on the water inlet pipeline (3) is located at the outlet end of the high-pressure pump (5).

3. The monolithic DTRO membrane testing system according to claim 2, characterized in that: The high-pressure pump (5) is provided with a frequency converter (12) which is signal-connected to the controller.

4. The monolithic DTRO membrane testing system according to claim 3, characterized in that: The monitoring assembly (8) comprises a first pressure gauge (13) and a second pressure gauge (14); the first pressure gauge (13) is arranged between the check valve (11) and the DTRO diaphragm testing device (2); the second pressure gauge (14) is arranged in the first concentrated water pipeline (6); and the first pressure gauge (13) and the second pressure gauge (14) are both connected to a ball valve (15).

5. The monolithic DTRO membrane testing system according to claim 4, characterized in that: The monitoring assembly (8) further comprises a pressure switch (801), a first pressure transmitter (802) and a second pressure transmitter (803), all of which are connected to the controller signal; the pressure switch (801) is arranged between the high-pressure pump (5) and the check valve (11); the first pressure transmitter (802) is arranged between the check valve (11) and the first pressure gauge (13); and the second pressure transmitter (803) is arranged between the second pressure gauge (14) and the test slot (1).

6. The monolithic DTRO membrane testing system according to claim 5, characterized in that: The monitoring component (8) further comprises a temperature sensor (804), a first conductivity meter (805), a second conductivity meter (806), a pH online detector (807), a first flow meter (808), a second flow meter (809) and a third flow meter (810), all of which are connected to the controller signal; the temperature sensor (804) is arranged in the test tank (1); the first conductivity meter (805), the pH online detector (807) and the first flow meter (808) are arranged in sequence at the outlet end of the booster pump (4); the second conductivity meter (806) is arranged in the water production tank (9); the second flow meter (809) is arranged in the second concentrated water pipeline (7); and the third flow meter (810) is between the second pressure transmitter (803) and the test tank (1).

7. The monolithic DTRO membrane testing system according to claim 6, characterized in that: Butterfly valves (16) are provided between the test tank (1) and the booster pump (4), at the inlet end of the high-pressure pump (5), between the check valve (11) and the first pressure transmitter (802), between the DTRO diaphragm test device (2) and the first pressure gauge (13), and between the DTRO diaphragm test device (2) and the second pressure gauge (14).

8. The single-chip DTRO membrane testing system according to claim 1, characterized in that: The test trough (1) and the water production trough (9) are both transparent containers, and scales are provided on the test trough (1) and the water production trough (9).

9. The single-chip DTRO membrane testing system according to claim 1, characterized in that: The DTRO diaphragm test device (2) is a cylindrical structure, comprising an upper flange (21) and a lower flange (22) which are detachably connected, the upper flange (21) and the lower flange (22) both being provided with a coaxial circular trough body, the outer periphery of the trough body being provided with an annular groove, a sealing member (17) being provided in the annular groove, the upper flange (21) being provided with the water inlet (211) connected to the trough body, the lower flange (22) being provided with the first water outlet (221) and the second water outlet (222) connected to the trough body, the second water outlet (222) being provided in the middle of the trough body, and the water inlet (211) and the first water outlet (221) being provided at the outer edge of the trough body.

10. The single-chip DTRO membrane testing system according to claim 9, characterized in that: The outer edges of the upper flange (21) and the lower flange (22) are each provided with a plurality of bolt holes (18), and the plurality of bolt holes (18) are arranged in a one-to-one correspondence.

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