Methods, systems, equipment and storage media for scale removal in water purification equipment

Abstract

This invention discloses a method, system, equipment, and storage medium for scale removal in a water purification device. The water purification device includes a nanofiltration unit with a magnetic field coil externally mounted on the nanofiltration unit. The scale removal method includes: obtaining target and actual parameter values ​​of the water purification device; if the actual parameter value is less than the target parameter value, reciprocatingly energizing the magnetic field coil in both forward and reverse directions to detach the scale from the nanofiltration unit; and controlling the operating state of the water purification device to discharge the scale. This invention, by winding a magnetic field coil around the outside of the nanofiltration unit, and upon detecting scale in the nanofiltration unit, reciprocatingly energizing the magnetic field coil in both directions to detach the scale, and then controlling the operating state of the water purification device to discharge the scale, can remove scale promptly and effectively, improving scale removal efficiency and effectiveness.

Description

Technical Field

[0001] This invention relates to the field of water purification equipment technology, and in particular to a method, system, equipment and storage medium for scale removal in water purification equipment. Background Technology

[0002] Nanofiltration cartridges inherently retain some mineral ions during filtration, but once the nanofiltration membrane is installed in the water system, its desalination effect is essentially determined, and the desalination rate is basically fixed. However, different water qualities require different desalination rates. In northern regions with high water hardness, a higher desalination rate is desired, while in southern regions with low water hardness, a lower rate is preferred. Therefore, it's desirable for water purification equipment to automatically adjust the nanofiltration desalination rate depending on the location. However, the presence of desalination inevitably leads to the aggregation of ions and scaling before the membrane, and the higher the desalination rate, the faster the scaling occurs.

[0003] Generally, water purification equipment requires flushing the filter cartridge during use to prevent scale buildup on the filter membrane, thus avoiding clogging and shortening the filter's lifespan. Some systems flush for a few seconds after each use, some flush after a certain flow rate, and some flush at regular intervals. These methods effectively flush the filter cartridge, preventing scale buildup and extending its lifespan. However, these measures have some drawbacks. Water quality varies from place to place; some areas have high hardness, while others have low hardness, and the required desalination rate settings also vary. Without a suitable method for detecting and flushing filter scale, two outcomes are inevitable: over-flushing (setting the flushing time too long), which wastes a significant amount of water, and ineffective flushing. In areas with high hardness, scale forms quickly. If a high desalination rate is set when adjustable, it will inevitably lead to rapid scale buildup on the filter cartridge. Therefore, infrequent or short flushing times result in rapid scale buildup, significantly shortening the filter's lifespan. Furthermore, scale buildup leads to reduced water flow and increased wastewater, further wasting water resources. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of low processing efficiency and poor descaling effect in the existing filter cartridge scale treatment methods, and to provide a scale treatment method, system, equipment and storage medium for water purification equipment.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] The first aspect of this invention provides a method for treating scale in a water purification device, the water purification device including a nanofiltration unit, wherein a magnetic field coil is disposed externally on the nanofiltration unit, and the scale treatment method includes:

[0007] Obtain the target and actual parameter values ​​of the water purification equipment;

[0008] If the actual parameter value is less than the target parameter value, the magnetic field coil is energized in both the forward and reverse directions to remove scale from the nanofiltration device.

[0009] Control the operating status of the water purification equipment to remove the scale.

[0010] Preferably, after the step of controlling the operating state of the water purification equipment to remove the scale, the scale removal method further includes:

[0011] The magnetic field coil is energized in the reverse direction.

[0012] Preferably, the scale removal method further includes:

[0013] Calculate the parameter change value of the water purification equipment based on the actual parameter value and the target parameter value of the water purification equipment;

[0014] The degree of scaling in the nanofiltration device is determined based on the changes in the aforementioned parameters.

[0015] Adjust the scale treatment time according to the degree of scale buildup.

[0016] Preferably, the step of determining the degree of fouling of the nanofiltration device based on the parameter change value includes:

[0017] The degree of scaling in the nanofiltration device is calculated based on the changes in the parameters.

[0018] The degree of scaling in the nanofiltration device is determined based on the scaling degree value.

[0019] The degree of scaling is positively correlated with the scaling degree value.

[0020] Preferably, the water purification equipment further includes a booster pump and a solenoid valve, and the step of controlling the operating state of the water purification equipment to remove the scale includes:

[0021] The booster pump is turned on and the solenoid valve is turned off, and the opening of the adjustable valve of the nanofiltration device is adjusted to a preset value to remove the scale.

[0022] Preferably, the parameters of the water purification equipment include at least one of the following: the voltage of the magnetic field coil, the opening degree of the adjustable valve at the wastewater outlet of the nanofiltration device, and the water flow rate.

[0023] Preferably, the scale treatment time includes at least one of the following: the time for the magnetic field coil to reciprocate in both the forward and reverse directions, the time for removing scale, and the time for the magnetic field coil to be energized in the reverse direction.

[0024] The second aspect of the present invention provides a scale treatment system for a water purification device, the water purification device including a nanofiltration device, a magnetic field coil being disposed outside the nanofiltration device, and the scale treatment system including an acquisition module, a reciprocating power supply module, and a control module;

[0025] The acquisition module is used to acquire the target parameter values ​​and actual parameter values ​​of the water purification equipment.

[0026] The reciprocating energizing module is used to reciprocate the magnetic field coil in both the forward and reverse directions if the actual parameter value is less than the target parameter value, so that the scale is removed from the nanofiltration device.

[0027] The control module is used to control the operating status of the water purification equipment in order to remove the scale.

[0028] Preferably, the scale treatment system further includes a reverse power supply module;

[0029] The reverse energizing module is used to reverse the energizing of the magnetic field coil.

[0030] Preferably, the scale treatment system further includes a calculation module, a determination module, and an adjustment module;

[0031] The calculation module is used to calculate the parameter change value of the water purification equipment based on the actual parameter value and the target parameter value of the water purification equipment.

[0032] The determining module is used to determine the degree of scaling in the nanofiltration device based on the parameter change value;

[0033] The adjustment module is used to adjust the scale treatment time according to the degree of scale buildup.

[0034] Preferably, the determining module includes a calculation unit and a determining unit;

[0035] The calculation unit is used to calculate the degree of scaling of the nanofiltration device based on the parameter change value;

[0036] The determining unit is used to determine the degree of scaling of the nanofiltration device based on the scaling degree value;

[0037] The degree of scaling is positively correlated with the scaling degree value.

[0038] Preferably, the water purification equipment further includes a booster pump and a solenoid valve. The control module is used to control the booster pump to turn on and the solenoid valve to turn off, and to adjust the opening degree of the adjustable valve of the nanofiltration device to a preset opening degree value to remove the scale.

[0039] Preferably, the parameters of the water purification equipment include at least one of the following: the voltage of the magnetic field coil, the opening degree of the adjustable valve at the wastewater outlet of the nanofiltration device, and the water flow rate.

[0040] Preferably, the scale treatment time includes at least one of the following: the time for the magnetic field coil to reciprocate in both the forward and reverse directions, the time for removing scale, and the time for the magnetic field coil to be energized in the reverse direction.

[0041] A third aspect of the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and for running on the processor, wherein the processor executes the computer program to implement the scale removal method of the water purification device as described in the first aspect.

[0042] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the scale removal method of the water purification device as described in the first aspect.

[0043] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0044] The positive and progressive effects of this invention are as follows:

[0045] This invention removes scale by winding a magnetic field coil around the outside of a nanofiltration device. When scale is detected in the nanofiltration device, the magnetic field coil is energized in both directions to remove the scale from the nanofiltration device. The scale is then discharged by controlling the operation of the water purification equipment. This method can remove scale in a timely and effective manner, improving the scale treatment efficiency and descaling effect. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the water purification equipment in Embodiments 1 and 2 of the present invention.

[0047] Figure 2 This is a first flowchart of the scale removal method of the water purification equipment in Embodiment 1 of the present invention.

[0048] Figure 3 This is a second flowchart of the scale removal method of the water purification equipment in Embodiment 1 of the present invention.

[0049] Figure 4 This is a schematic diagram of the scale treatment system of the water purification equipment in Embodiment 2 of the present invention.

[0050] Figure 5 This is a schematic diagram of the electronic device used to implement the scale removal method of the water purification equipment in Embodiment 3 of the present invention. Detailed Implementation

[0051] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0052] Example 1

[0053] This embodiment provides a method for treating scale in a water purification device, such as... Figure 1 As shown, the water purification equipment includes a nanofiltration unit, an inlet water quality sensor TDS1 for the nanofiltration unit, an outlet water quality sensor TDS2 for the nanofiltration unit, PP cotton, a booster pump, an adjustable valve, a post-activated carbon filter, a flow meter, and a solenoid valve. A magnetic field coil is externally installed on the nanofiltration unit, such as... Figure 2 As shown, the scale removal method includes:

[0054] Step 101: Obtain the target parameter values ​​and actual parameter values ​​of the water purification equipment;

[0055] As an optional implementation, the parameters of the water purification equipment include at least one of the following: the voltage of the magnetic field coil, the opening degree of the adjustable valve at the wastewater outlet of the nanofiltration device, and the water flow rate.

[0056] In this embodiment, when the water purification equipment is initially used, the filter element is free of scale. The initial standard desalination rate (i.e., the target desalination rate) is recorded. This initial standard desalination rate is achieved by adjusting at least one of the following: the magnetic field coil, the adjustable valve at the wastewater outlet of the nanofiltration unit, and the booster pump. The voltage of the target magnetic field coil, the target opening degree of the adjustable valve at the wastewater outlet of the nanofiltration unit, and the target outflow rate corresponding to achieving the initial standard desalination rate are recorded. When the influent water quality and the initial standard desalination rate remain unchanged, the corresponding target water purification equipment parameters (e.g., the target voltage of the magnetic field coil, the target opening degree of the adjustable valve at the wastewater outlet of the nanofiltration unit, and the target outflow rate) remain essentially unchanged. Once the influent water quality changes or the initial standard desalination rate changes, the parameters of each water purification equipment will inevitably change. The approximate range of these changes can be calculated using calibration data. For example, as shown in Table 1, when the nanofiltration device does not form scale during the initial use of the water purification equipment, some adjustments can be made during the initial use of the water purification equipment. Then, the initial standard desalination rate and the parameters of each water purification device are recorded to form a series of data matrices of initial standard desalination rate and water purification device parameters.

[0057] Table 1

[0058] Desalination rate (%) Voltage of the magnetic field coil (V) Adjustable valve opening (%) Outflow rate (L / min) 65 0 10 2 70 12 10 2 75 22 10 2 80 24 15 1.8 85 24 19 1.5 90 24 27 1.2

[0059] The initial standard desalination rate in Table 1 is 65%. Other desalination rates are variations after user settings are changed. After prolonged use, due to the high ion concentration in front of the nanofiltration membrane, scaling begins to form on the nanofiltration unit. At this point, under the same desalination rate control, some water purification equipment parameters will inevitably change. The initial data records are used as a reference to determine the degree of scaling on the nanofiltration unit.

[0060] In addition, record the target water purification equipment parameters when the nanofiltration unit is initially free of scaling. Once scaling occurs in the nanofiltration unit, some water purification equipment parameters will inevitably change. When the actual parameter values ​​of the water purification equipment deviate significantly from the target parameter values ​​or the parameters calculated from the calibration data, it must be due to the changes caused by scaling in the nanofiltration unit. Therefore, by observing the changes in the water purification equipment parameters, it is possible to calculate and analyze whether the nanofiltration unit has scaled and the degree of scaling.

[0061] It should be noted that the target parameter values ​​for the water purification equipment are at least one of the following: the target voltage of the magnetic field coil corresponding to the initial standard desalination rate when the nanofiltration device is free of scale, the target opening degree of the adjustable valve at the wastewater outlet of the nanofiltration device, and the target effluent flow rate.

[0062] Step 102: If the actual parameter value is less than the target parameter value, then the magnetic field coil is energized in both the forward and reverse directions to remove the scale from the nanofiltration device.

[0063] In this embodiment, when the actual parameter value is detected to be less than the target parameter value, it indicates that there is scale in the nanofiltration device. At this time, the magnetic field coil is energized in both the forward and reverse directions to form an alternating magnetic field. The alternating magnetic field exerts a pulling force on the scale, causing the scale to detach from the membrane of the nanofiltration device.

[0064] It should be noted that when the magnetic field coil is energized in both the forward and reverse directions, the maximum magnetic field strength is usually used for reciprocating in both directions (for example, the upper limit voltage of the magnetic field coil is used for reciprocating in both directions). However, other voltages below the upper limit voltage can also be used for reciprocating in both directions, and no specific limitation is made here.

[0065] It should be noted that if the actual parameter value is not less than the target parameter value, then the control will end.

[0066] Step 103: Control the operation of the water purification equipment to remove scale.

[0067] In this embodiment, the water purification equipment is controlled to flush with water to remove scale.

[0068] As an optional implementation, step 103 includes:

[0069] The booster pump is turned on and the solenoid valve is turned off, and the opening of the adjustable valve of the nanofiltration device is adjusted to a preset value to remove the scale.

[0070] In this embodiment, the booster pump is turned on, the outlet solenoid valve is turned off, and the opening of the adjustable valve at the wastewater outlet of the nanofiltration device is adjusted to the maximum, so that all the inlet water flows out from the wastewater end of the nanofiltration device, thereby flushing away the scale in front of the nanofiltration membrane with a large flow of water.

[0071] As an optional implementation method, such as Figure 3 As shown, after step 103, the scale removal method further includes:

[0072] Step 104: Reverse the current flow through the magnetic field coil.

[0073] In this embodiment, the magnetic field coil is energized in the opposite direction, so that all the ions in front of the nanofiltration membrane are moved away from the membrane. Then, the membrane is rinsed with water of low ion concentration to prevent the nanofiltration device from scaling again.

[0074] As an optional implementation method, the scale removal method further includes:

[0075] Step 201: Calculate the parameter changes of the water purification equipment based on the actual and target parameter values.

[0076] Step 202: Determine the degree of scaling in the nanofiltration unit based on the parameter changes;

[0077] Step 203: Adjust the scale treatment time according to the degree of scale buildup.

[0078] As an optional implementation, the scale treatment time includes at least one of the following: the time for the magnetic field coil to reciprocate in both the forward and reverse directions, the time for removing scale, and the time for the magnetic field coil to be energized in the reverse direction.

[0079] As an optional implementation, step 202 includes:

[0080] Step 2021: Calculate the degree of scaling of the nanofiltration device based on the parameter changes;

[0081] In this embodiment, the scaling degree value of the nanofiltration device is calculated by weighting. For example, the formula for calculating the scaling degree value can be as shown in formula (1):

[0082] Q=ΔV*10%+ΔM*60%+ΔF*30%(1)

[0083] Where Q represents the degree of scaling of the nanofiltration device; ΔV represents the voltage change between the target voltage and the actual voltage of the magnetic field coil corresponding to the initial standard desalination rate; ΔM represents the opening change between the target opening and the actual opening of the adjustable valve at the wastewater outlet of the nanofiltration device; and ΔF represents the effluent flow rate change between the target effluent flow rate and the actual effluent flow rate.

[0084] Step 2022: Determine the degree of scaling in the nanofiltration unit based on the scaling degree value;

[0085] Among them, the degree of scaling is positively correlated with the scaling degree value.

[0086] In the specific implementation process, if the scaling degree value is greater than or equal to the first preset threshold and less than the second preset threshold, the scaling degree of the nanofiltration device is determined to be mild.

[0087] Alternatively, if the scaling degree value is greater than or equal to the second preset threshold and less than the third preset threshold, then the scaling degree of the nanofiltration device is determined to be moderate.

[0088] Alternatively, if the scaling degree value is greater than or equal to the third preset threshold, the scaling degree of the nanofiltration device is determined to be severe.

[0089] It should be noted that the first, second, and third preset thresholds are all set according to the actual situation. For example, the first preset threshold can be set to 1, the second preset threshold can be set to 3, and the third preset threshold can be set to 5. The first, second, and third preset thresholds can also be set to other values, without specific limitations here.

[0090] In practice, different degrees of scaling require different scale removal times. For example, when the scaling is mild, the magnetic field coil is energized in both forward and reverse directions for 10 seconds, and then energized in reverse direction for 6 seconds. The reverse energization moves the ions away from the membrane. The booster pump is not turned on, and a small water flow is used to flush away the water in front of the membrane. The scale removal time (i.e., flushing time) is 5 seconds. When the scaling is moderate, the magnetic field coil is energized in both forward and reverse directions for 20 seconds, and then energized in reverse direction for 12 seconds. The scale removal time (i.e., flushing time) is 10 seconds. When the scaling is severe, the magnetic field coil is energized in both forward and reverse directions for 30 seconds, and then energized in reverse direction for 22 seconds. The scale removal time (i.e., flushing time) is 20 seconds.

[0091] Additionally, the forward and reverse reciprocating energizing time of the magnetic field coil, the time for removing scale, and the reverse energizing time of the magnetic field coil can be calculated using the following formulas. Specifically, the formulas for calculating the forward and reverse reciprocating energizing time of the magnetic field coil are: T1 = K1 * Q 2 Where T1 represents the reciprocating energizing time of the magnetic field coil in the forward and reverse directions; Q 2K1 represents the square of the scaling degree of the nanofiltration device; K1 is a constant, for example, K1 generally satisfies K1 greater than or equal to 3 and less than or equal to 10;

[0092] The formula for calculating the scale removal time is: T2 = K2 * Q, where T2 represents the scale removal time; K2 is a constant, for example, K2 generally satisfies K2 greater than or equal to 5 and less than or equal to 10;

[0093] The formula for calculating the reverse energizing time of the magnetic field coil is: T3 = K3 * Q 2 Where T3 represents the reverse energizing time of the magnetic field coil; K3 is a constant, for example, K3 generally satisfies that K3 is greater than or equal to 2 and less than or equal to 5;

[0094] The total scale removal time is: Ttotal = T1 + T2 + T3

[0095] In addition, K1, K2, and K3 generally need to be adjusted based on factors such as nanofiltration devices and water circuit design, and by conducting flushing effect tests after scaling.

[0096] This embodiment involves winding a magnetic field coil around the outside of the nanofiltration device. When scale is detected in the nanofiltration device, the magnetic field coil is energized in both directions to remove the scale from the nanofiltration device. The scale is then discharged by controlling the operation of the water purification equipment. This method can remove scale in a timely and effective manner, improving the scale treatment efficiency and descaling effect. Furthermore, by reversing the energization of the magnetic field coil, all ions in front of the nanofiltration membrane are moved away from the membrane. Then, the membrane is rinsed with water of low ion concentration to prevent the nanofiltration device from scaling again.

[0097] Example 2

[0098] This embodiment provides a scale removal system for a water purification device, such as... Figure 1 As shown, the water purification equipment includes a nanofiltration unit, an inlet water quality sensor TDS1 for the nanofiltration unit, an outlet water quality sensor TDS2 for the nanofiltration unit, PP cotton, a booster pump, an adjustable valve, a post-activated carbon filter, a flow meter, and a solenoid valve. A magnetic field coil is externally installed on the nanofiltration unit, such as... Figure 4 As shown, the scale removal system includes an acquisition module 21, a reciprocating power supply module 22, and a control module 23;

[0099] The acquisition module 21 is used to acquire the target parameter values ​​and actual parameter values ​​of the water purification equipment.

[0100] As an optional implementation, the parameters of the water purification equipment include at least one of the following: the voltage of the magnetic field coil, the opening degree of the adjustable valve at the wastewater outlet of the nanofiltration device, and the water flow rate.

[0101] In this embodiment, when the water purification equipment is initially used, the filter element is free of scale. The initial standard desalination rate (i.e., the target desalination rate) is recorded. This initial standard desalination rate is achieved by adjusting at least one of the following: the magnetic field coil, the adjustable valve at the wastewater outlet of the nanofiltration unit, and the booster pump. The voltage of the target magnetic field coil, the target opening degree of the adjustable valve at the wastewater outlet of the nanofiltration unit, and the target outflow rate corresponding to achieving the initial standard desalination rate are recorded. When the influent water quality and the initial standard desalination rate remain unchanged, the corresponding target water purification equipment parameters (e.g., the target voltage of the magnetic field coil, the target opening degree of the adjustable valve at the wastewater outlet of the nanofiltration unit, and the target outflow rate) remain essentially unchanged. Once the influent water quality changes or the initial standard desalination rate changes, the parameters of each water purification equipment will inevitably change. The approximate range of these changes can be calculated using calibration data. For example, as shown in Table 1 of Example 1, the nanofiltration device does not form scale when the water purification equipment is initially used. Some adjustments can be made when the water purification equipment is initially used, and then the initial standard desalination rate and the parameters of each water purification device are recorded to form a series of data matrices of initial standard desalination rate and water purification device parameters.

[0102] In Example 1, the initial standard desalination rate in Table 1 is 65%. Other desalination rates are variations after user settings are changed. After prolonged use, due to the high ion concentration in front of the nanofiltration membrane, scaling begins to form on the nanofiltration unit. At this point, under the same desalination rate control, some water purification equipment parameters will inevitably change. The initial data records are used as a reference to determine the degree of scaling on the nanofiltration unit.

[0103] In addition, record the target water purification equipment parameters when the nanofiltration unit is initially free of scaling. Once scaling occurs in the nanofiltration unit, some water purification equipment parameters will inevitably change. When the actual parameter values ​​of the water purification equipment deviate significantly from the target parameter values ​​or the parameters calculated from the calibration data, it must be due to the changes caused by scaling in the nanofiltration unit. Therefore, by observing the changes in the water purification equipment parameters, it is possible to calculate and analyze whether the nanofiltration unit has scaled and the degree of scaling.

[0104] It should be noted that the target parameter values ​​for the water purification equipment are at least one of the following: the target voltage of the magnetic field coil corresponding to the initial standard desalination rate when the nanofiltration device is free of scale, the target opening degree of the adjustable valve at the wastewater outlet of the nanofiltration device, and the target effluent flow rate.

[0105] The reciprocating energizing module 22 is used to reciprocate the magnetic field coil in the forward and reverse directions if the actual parameter value is less than the target parameter value, so that the scale is removed from the nanofiltration device.

[0106] In this embodiment, when the actual parameter value is detected to be less than the target parameter value, it indicates that there is scale in the nanofiltration device. At this time, the magnetic field coil is energized in both the forward and reverse directions to form an alternating magnetic field. The alternating magnetic field exerts a pulling force on the scale, causing the scale to detach from the membrane of the nanofiltration device.

[0107] It should be noted that when the magnetic field coil is energized in both the forward and reverse directions, the maximum magnetic field strength is usually used for reciprocating in both directions (for example, the upper limit voltage of the magnetic field coil is used for reciprocating in both directions). However, other voltages below the upper limit voltage can also be used for reciprocating in both directions, and no specific limitation is made here.

[0108] It should be noted that if the actual parameter value is not less than the target parameter value, then the control will end.

[0109] The control module 23 is used to control the operating status of the water purification equipment in order to remove scale.

[0110] In this embodiment, the water purification equipment is controlled to flush with water to remove scale.

[0111] As an optional implementation method, such as Figure 4 As shown, the control module 23 is used to control the booster pump to start and the solenoid valve to close, and to adjust the opening degree of the adjustable valve of the nanofiltration device to a preset opening degree value to discharge scale.

[0112] In this embodiment, the booster pump is turned on, the outlet solenoid valve is turned off, and the opening of the adjustable valve at the wastewater outlet of the nanofiltration device is adjusted to the maximum, so that all the inlet water flows out from the wastewater end of the nanofiltration device, thereby flushing away the scale in front of the nanofiltration membrane with a large flow of water.

[0113] As an optional implementation method, such as Figure 4 As shown, the scale removal system also includes a reverse power supply module 24;

[0114] The reverse energizing module 24 is used to reverse the energizing of the magnetic field coil.

[0115] In this embodiment, the magnetic field coil is energized in the opposite direction, so that all the ions in front of the nanofiltration membrane are moved away from the membrane. Then, the membrane is rinsed with water of low ion concentration to prevent the nanofiltration device from scaling again.

[0116] As an optional implementation method, such as Figure 4 As shown, the scale treatment system also includes a calculation module 25, a determination module 26, and an adjustment module 27;

[0117] Calculation module 25 is used to calculate the parameter changes of the water purification equipment based on the actual and target parameter values ​​of the water purification equipment.

[0118] Module 26 is used to determine the degree of scaling in the nanofiltration unit based on parameter changes.

[0119] The adjustment module 27 is used to adjust the scale treatment time according to the degree of scale buildup.

[0120] As an optional implementation, the scale treatment time includes at least one of the following: the time for the magnetic field coil to reciprocate in both the forward and reverse directions, the time for removing scale, and the time for the magnetic field coil to be energized in the reverse direction.

[0121] As an optional implementation method, such as Figure 4 As shown, the determining module 26 includes a calculation unit 261 and a determining unit 262;

[0122] The calculation unit 261 is used to calculate the degree of fouling of the nanofiltration device based on the parameter change value;

[0123] In this embodiment, the scaling degree value of the nanofiltration device is calculated by weighting. For example, the scaling degree value can be calculated by formula (1) in embodiment 1.

[0124] Determining unit 262 is used to determine the degree of scaling of the nanofiltration device based on the scaling degree value;

[0125] Among them, the degree of scaling is positively correlated with the scaling degree value.

[0126] In the specific implementation process, if the scaling degree value is greater than or equal to the first preset threshold and less than the second preset threshold, the scaling degree of the nanofiltration device is determined to be mild.

[0127] Alternatively, if the scaling degree value is greater than or equal to the second preset threshold and less than the third preset threshold, then the scaling degree of the nanofiltration device is determined to be moderate.

[0128] Alternatively, if the scaling degree value is greater than or equal to the third preset threshold, the scaling degree of the nanofiltration device is determined to be severe.

[0129] It should be noted that the first, second, and third preset thresholds are all set according to the actual situation. For example, the first preset threshold can be set to 1, the second preset threshold can be set to 3, and the third preset threshold can be set to 5. The first, second, and third preset thresholds can also be set to other values, without specific limitations here.

[0130] In practice, different degrees of scaling require different scale removal times. For example, when the scaling is mild, the magnetic field coil is energized in both forward and reverse directions for 10 seconds, and then energized in reverse direction for 6 seconds. The reverse energization moves the ions away from the membrane. The booster pump is not turned on, and a small water flow is used to flush away the water in front of the membrane. The scale removal time (i.e., flushing time) is 5 seconds. When the scaling is moderate, the magnetic field coil is energized in both forward and reverse directions for 20 seconds, and then energized in reverse direction for 12 seconds. The scale removal time (i.e., flushing time) is 10 seconds. When the scaling is severe, the magnetic field coil is energized in both forward and reverse directions for 30 seconds, and then energized in reverse direction for 22 seconds. The scale removal time (i.e., flushing time) is 20 seconds.

[0131] Additionally, the forward and reverse reciprocating energizing time of the magnetic field coil, the time for removing scale, and the reverse energizing time of the magnetic field coil can be calculated using the following formulas. Specifically, the formulas for calculating the forward and reverse reciprocating energizing time of the magnetic field coil are: T1 = K1 * Q 2 Where T1 represents the reciprocating energizing time of the magnetic field coil in the forward and reverse directions; Q 2 K1 represents the square of the scaling degree of the nanofiltration device; K1 is a constant, for example, K1 generally satisfies K1 greater than or equal to 3 and less than or equal to 10;

[0132] The formula for calculating the scale removal time is: T2 = K2 * Q, where T2 represents the scale removal time; K2 is a constant, for example, K2 generally satisfies K2 greater than or equal to 5 and less than or equal to 10;

[0133] The formula for calculating the reverse energizing time of the magnetic field coil is: T3 = K3 * Q 2 Where T3 represents the reverse energizing time of the magnetic field coil; K3 is a constant, for example, K3 generally satisfies that K3 is greater than or equal to 2 and less than or equal to 5;

[0134] The total scale removal time is: Ttotal = T1 + T2 + T3

[0135] In addition, K1, K2, and K3 generally need to be adjusted based on factors such as nanofiltration devices and water circuit design, and by conducting flushing effect tests after scaling.

[0136] This embodiment involves winding a magnetic field coil around the outside of the nanofiltration device. When scale is detected in the nanofiltration device, the magnetic field coil is energized in both directions to remove the scale from the nanofiltration device. The scale is then discharged by controlling the operation of the water purification equipment. This method can remove scale in a timely and effective manner, improving the scale treatment efficiency and descaling effect. Furthermore, by reversing the energization of the magnetic field coil, all ions in front of the nanofiltration membrane are moved away from the membrane. Then, the membrane is rinsed with water of low ion concentration to prevent the nanofiltration device from scaling again.

[0137] Example 3

[0138] Figure 5 This is a schematic diagram of an electronic device provided in Embodiment 4 of the present invention. The electronic device includes a memory, a processor, and a computer program stored in the memory and used to run on the processor. When the processor executes the program, it implements the scale removal method of the water purification device in Embodiment 1. Figure 5 The electronic device 30 shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of the present invention.

[0139] like Figure 5 As shown, the electronic device 30 can be manifested as a general-purpose computing device, such as a server device. The components of the electronic device 30 may include, but are not limited to: at least one processor 31, at least one memory 32, and a bus 33 connecting different system components (including memory 32 and processor 31).

[0140] Bus 33 includes a data bus, an address bus, and a control bus.

[0141] The memory 32 may include volatile memory, such as random access memory (RAM) 321 and / or cache memory 322, and may further include read-only memory (ROM) 323.

[0142] The memory 32 may also include a program / utility 325 having a set (at least one) of program modules 324, including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0143] The processor 31 executes various functional applications and data processing by running computer programs stored in the memory 32, such as the scale removal method of the water purification device in Embodiment 1 of the present invention.

[0144] Electronic device 30 can also communicate with one or more external devices 34 (e.g., keyboard, pointing device, etc.). This communication can be performed via input / output (I / O) interface 35. Furthermore, the model-generating device 30 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 36. Figure 5As shown, network adapter 36 communicates with other modules of the model-generated device 30 via bus 33. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with the model-generated device 30, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems.

[0145] It should be noted that although several units / modules or sub-units / modules of the electronic device have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of the present invention, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0146] Example 4

[0147] This embodiment provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the scale removal method of the water purification equipment provided in Embodiment 1.

[0148] The readable storage medium may be more specifically adopted, including but not limited to: portable disk, hard disk, random access memory, read-only memory, erasable programmable read-only memory, optical storage device, magnetic storage device, or any suitable combination thereof.

[0149] In a possible implementation, the present invention can also be implemented as a program product comprising program code, which, when the program product is run on a terminal device, causes the terminal device to execute the scale removal method of the water purification device described in Embodiment 1.

[0150] The program code for executing the present invention can be written in any combination of one or more programming languages. The program code can be executed entirely on the user device, partially on the user device, as a standalone software package, partially on the user device and partially on a remote device, or entirely on a remote device.

[0151] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A scale treatment method for a water purification apparatus including a nanofiltration device, characterized by, The nanofiltration device is externally provided with a magnetic field coil, and the scale treatment method comprises the following steps: Obtaining a target parameter value and an actual parameter value of a water purification equipment parameter, the water purification equipment parameter comprising at least one of a voltage of the magnetic field coil, an opening degree of an adjustable valve of a wastewater outlet of the nanofiltration device, and a water outlet flow rate; If the actual parameter value is less than the target parameter value, the magnetic field coil is subjected to forward and reverse reciprocating power supply, so that scale is separated from the nanofiltration device; Controlling an operation state of the water purification equipment to discharge the scale; After the scale is discharged, the magnetic field coil is subjected to reverse power supply.

2. The scale treatment method of a water purifying apparatus as claimed in claim 1, wherein The scale treatment method further comprises the following steps: Calculating a parameter change value of the water purification equipment according to the actual parameter value and the target parameter value of the water purification equipment parameter; Determining a scale formation degree of the nanofiltration device according to the parameter change value; Adjusting a scale treatment time according to the scale formation degree.

3. The scale treatment method of a water purifying apparatus according to claim 2, wherein The step of determining the scale formation degree of the nanofiltration device according to the parameter change value comprises the following steps: Calculating a scale formation degree value of the nanofiltration device according to the parameter change value; Determining the scale formation degree of the nanofiltration device according to the scale formation degree value; The scale formation degree is positively correlated with the scale formation degree value.

4. The scale treatment method of a water purifying apparatus as claimed in claim 1, wherein The water purification equipment further comprises a booster pump and an electromagnetic valve, and the step of controlling the operation state of the water purification equipment to discharge the scale comprises the following steps: Controlling the booster pump to be turned on and the electromagnetic valve to be turned off, and adjusting the opening degree of the adjustable valve of the nanofiltration device to a preset opening degree value to discharge the scale.

5. The scale treatment method of a water purifying apparatus as claimed in claim 2, wherein The scale treatment time comprises at least one of a forward and reverse reciprocating power supply time of the magnetic field coil, a scale discharge time, and a reverse power supply time of the magnetic field coil.

6. A scale treatment system for a water purification apparatus comprising a nanofiltration device, characterized by The nanofiltration device is externally provided with a magnetic field coil, and the scale treatment system comprises an acquisition module, a reciprocating power supply module, and a control module; The acquisition module is configured to obtain a target parameter value and an actual parameter value of a water purification equipment parameter, the water purification equipment parameter comprising at least one of a voltage of the magnetic field coil, an opening degree of an adjustable valve of a wastewater outlet of the nanofiltration device, and a water outlet flow rate; The reciprocating power supply module is configured to, if the actual parameter value is less than the target parameter value, subject the magnetic field coil to forward and reverse reciprocating power supply, so that scale is separated from the nanofiltration device; The control module is configured to control an operation state of the water purification equipment to discharge the scale; The scale treatment system further comprises a reverse power supply module; The reverse power supply module is configured to, after the scale is discharged, subject the magnetic field coil to reverse power supply.

7. An electronic device comprising a memory, a processor, and a computer program stored on the memory for running on the processor, characterized in that, The processor executes the computer program to implement the scale treatment method of the water purification equipment according to any one of claims 1-5.

8. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the scale treatment method of the water purification equipment according to any one of claims 1-5.

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