A current regulation system for treating wastewater based on electrodialysis

Abstract

The application discloses a current adjusting system for treating wastewater based on electrodialysis, which comprises an electrodialysis concentration separation mechanism, a salt content detector arranged at a wastewater inlet of the electrodialysis concentration separation mechanism and used for detecting the salt content of the wastewater, a temperature detector arranged at the wastewater inlet of the electrodialysis concentration separation mechanism and used for detecting the temperature value of the wastewater, a flow rate detector arranged at the wastewater inlet of the electrodialysis concentration separation mechanism and used for detecting the flow rate value of the wastewater, a current adjusting device connected with the electrodialysis concentration separation mechanism and used for adjusting the size of the current value, and a control unit used for adjusting and correcting the size of the current value according to the detected data. In the application, the control unit collects the salt content of the wastewater to automatically control the current value of the current adjusting device, and corrects the current value according to the detected temperature value and flow rate value of the wastewater, so that the polarization of the electrodialysis concentration separation mechanism is prevented, the current efficiency is improved, and the generation of scale is prevented.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a current regulation system for treating wastewater based on electrodialysis. Background Technology

[0002] During the operation of electrodialysis devices, polarization and scaling often occur. In order to prevent polarization and effectively remove scale, it is necessary to select the appropriate electrodialysis operating current to prevent polarization from reducing current efficiency and causing scaling. Therefore, there is an urgent need for a current regulation system for electrodialysis wastewater treatment to adjust the current magnitude to solve this problem. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that the existing technology cannot accurately select the appropriate current to solve the problems of low current efficiency and scaling.

[0004] To address the aforementioned technical problems, this invention provides a current regulation system for treating wastewater via electrodialysis, comprising:

[0005] Electrodialysis concentration and separation unit;

[0006] A salinity analyzer is installed at the wastewater inlet of the electrodialysis concentration and separation unit, and the salinity analyzer is used to detect the salinity of the wastewater.

[0007] A temperature detector is installed at the wastewater inlet of the electrodialysis concentration and separation unit, and the temperature detector is used to detect the temperature value of the wastewater.

[0008] A flow rate detector is installed at the wastewater inlet of the electrodialysis concentration and separation unit, and the flow rate detector is used to detect the flow rate of the wastewater.

[0009] A current regulating device is connected to the electrodialysis concentration and separation mechanism, and the current regulating device is used to regulate the magnitude of the current value.

[0010] The control unit is electrically connected to the salinity detector, flow rate detector, temperature detector, and current regulating device, respectively. The control unit is used to adjust and correct the current value based on the detected data.

[0011] Furthermore, the control unit includes:

[0012] The data acquisition module is electrically connected to the salinity detector, flow rate detector, and temperature detector, respectively. The data acquisition module is used to acquire the data parameters of the salinity detector, flow rate detector, and temperature detector, and transmit the data parameters to the processing module.

[0013] A processing module is connected to the acquisition module, and the processing module is used to set the working state command of the current regulating device according to the data parameters;

[0014] A control module is electrically connected to the current regulating device and is also connected to the processing module. The control module is used to control the current regulating device according to the working state instructions set by the processing module.

[0015] Furthermore, the acquisition module is used to acquire the salt content S detected by the salt content detector, and the control module is used to control the current adjustment device;

[0016] The processing module is used to set a first preset salt content s1, a second preset salt content s2, a third preset salt content s3 and a fourth preset salt content s4, where s1 < s2 < s3 < s4; the processing module is also used to set a first preset current value a1, a second preset current value a2, a third preset current value a3 and a fourth preset current value a4, where a1 < a2 < a3 < a4.

[0017] Based on the relationship between the salt content detected by the salt content detector and the preset salt content, a preset current value ai is selected as the current value of the current regulating device.

[0018] When S≤s1, the first preset working condition a1 is selected as the current value of the current regulating device;

[0019] When s1 < S ≤ s2, the second preset working condition a2 is selected as the current value of the current regulating device;

[0020] When s2<S≤s3, the third preset working condition a3 is selected as the current value of the current regulating device;

[0021] When s3<S≤s4, the fourth preset working condition a4 is selected as the current value of the current regulating device;

[0022] When the i-th preset operating condition ai is selected as the current value of the current regulating device, the control module controls the current regulating device to adjust the current using the i-th preset current value ai, where i = 1, 2, 3, 4.

[0023] Furthermore, the processing module is used to determine whether the temperature value and water flow rate value of the wastewater exceed the corresponding preset values ​​after the current regulating device regulates the current.

[0024] If neither the temperature nor the flow rate of the wastewater exceeds the corresponding preset value, the control module does not need to control the current regulating device to further correct the current value.

[0025] If one or both of the wastewater temperature and water flow rate values ​​exceed the corresponding preset values, the control module needs to control the current regulating device to further correct the current value.

[0026] Furthermore, if one or both of the wastewater temperature and flow rate values ​​exceed the corresponding preset values, the control module needs to control the current regulating device to further correct the current value, including:

[0027] If the temperature of the wastewater exceeds the corresponding preset value, the control module controls the current regulating device to further correct the current value.

[0028] Furthermore, if the temperature of the wastewater exceeds a corresponding preset value, the control module controls the current regulating device to further correct the current value, including:

[0029] The acquisition module is used to acquire the temperature value bi detected by the temperature detector. The processing module is used to preset a first preset temperature b1, a second preset temperature b2, a third preset temperature b3, and a fourth preset temperature b4, where b1 < b2 < b3 < b4; and to preset a first preset temperature correction coefficient x1, a second preset temperature correction coefficient x2, a third preset temperature correction coefficient x3, and a fourth preset temperature correction coefficient x4, where 1 > x1 > x2 > x3 > x4 > 0.7.

[0030] The current value of the current regulating device is adjusted based on the relationship between the temperature value detected by the temperature detector and various preset temperatures.

[0031] When b1 < bi ≤ b2, the first preset temperature correction coefficient x1 is selected to correct the current value of the current regulating device, and the corrected current value is ai * x1;

[0032] When b2 < bi ≤ b3, the second preset temperature correction coefficient x2 is selected to correct the current value of the current regulating device, and the corrected current value is ai * x2;

[0033] When b3 < bi ≤ b4, the third preset temperature correction coefficient x3 is selected to correct the current value of the current regulating device, and the corrected current value is ai * x3;

[0034] When b4 < bi, the fourth preset temperature correction coefficient x4 is selected to correct the current value of the current regulating device, and the corrected current value is ai*x4.

[0035] Furthermore, if one or both of the wastewater temperature and flow rate values ​​exceed the corresponding preset values, the control module needs to control the current regulating device to further correct the current value, including:

[0036] If the flow rate of the wastewater exceeds the corresponding preset value, the control module controls the current regulating device to further correct the current value.

[0037] Furthermore, if the flow rate of the wastewater exceeds the corresponding preset value, the control module controls the current regulating device to further correct the current value.

[0038] The acquisition module is used to acquire the flow velocity value ci detected by the flow velocity detector. The processing module is used to preset a first preset flow velocity value c1, a second preset flow velocity value c2, a third preset flow velocity value c3, and a fourth preset flow velocity value c4, where c1 < c2 < c3 < c4. The processing module is also used to preset a first preset flow velocity correction coefficient y1, a second preset flow velocity correction coefficient y2, a third preset flow velocity correction coefficient y3, and a fourth preset flow velocity correction coefficient y4, where 1 > y1 > y2 > y3 > y4 > 0.5.

[0039] The current value ai of the current regulating device is corrected based on the relationship between the flow velocity value detected by the flow velocity detector and various preset flow velocity values:

[0040] When c1 < ci ≤ c2, the first preset flow rate correction coefficient y1 is selected to correct the current value ai of the current regulating device, and the corrected current value is ai * y1.

[0041] When c2 < ci ≤ c3, the second preset flow rate correction coefficient y2 is selected to correct the current value ai of the current regulating device, and the corrected current value is ai * y2.

[0042] When c3 < ci ≤ c4, the third preset flow rate correction coefficient y3 is selected to correct the current value ai of the current regulating device, and the corrected current value is ai * y3.

[0043] When c4 < ci, the fourth preset flow rate correction coefficient y4 is selected to correct the current value ai of the current regulating device, and the corrected current value is ai * y4.

[0044] Furthermore, if one or both of the wastewater temperature and flow rate values ​​exceed the corresponding preset values, the control module needs to control the current regulating device to further correct the current value, including:

[0045] If both the temperature and flow rate of the wastewater exceed their respective preset values, the control module controls the current regulating device to further correct the current value according to the temperature and flow rate in sequence.

[0046] Furthermore, if both the temperature and flow rate of the wastewater exceed the corresponding preset values, the control module controls the current regulating device to further correct the current value according to the temperature and flow rate, including:

[0047] The acquisition module is used to acquire the temperature value bi detected by the temperature detector. The processing module is used to preset a first preset temperature b1, a second preset temperature b2, a third preset temperature b3, and a fourth preset temperature b4, where b1 < b2 < b3 < b4; and to preset a first preset temperature correction coefficient x1, a second preset temperature correction coefficient x2, a third preset temperature correction coefficient x3, and a fourth preset temperature correction coefficient x4, where 1 > x1 > x2 > x3 > x4 > 0.7.

[0048] The current value ai of the current regulating device is corrected based on the relationship between the temperature value detected by the temperature detector and various preset temperatures.

[0049] When b1 < bi ≤ b2, the first preset temperature correction coefficient x1 is selected to correct the current value of the current regulating device, and the corrected current value is ai * x1;

[0050] When b2 < bi ≤ b3, the second preset temperature correction coefficient x2 is selected to correct the current value of the current regulating device, and the corrected current value is ai * x2;

[0051] When b3 < bi ≤ b4, the third preset temperature correction coefficient x3 is selected to correct the current value of the current regulating device, and the corrected current value is ai * x3;

[0052] When b4 < bi, the fourth preset temperature correction coefficient x4 is selected to correct the current value of the current regulating device, and the corrected current value is ai*x4;

[0053] The processing module is used to further correct the current value ai*xi obtained after correcting the current value ai according to the selected i-th preset first temperature correction coefficient xi, i = 1, 2, 3, 4;

[0054] The acquisition module is also used to acquire the flow velocity value ci detected by the flow velocity detector. The processing module is used to preset a first preset flow velocity value c1, a second preset flow velocity value c2, a third preset flow velocity value c3, and a fourth preset flow velocity value c4, where c1 < c2 < c3 < c4. The processing module is also used to preset a first preset flow velocity correction coefficient y1, a second preset flow velocity correction coefficient y2, a third preset flow velocity correction coefficient y3, and a fourth preset flow velocity correction coefficient y4, where 1 > y1 > y2 > y3 > y4 > 0.5.

[0055] The current value ai*xi of the current regulating device is further corrected based on the relationship between the flow velocity value detected by the flow velocity detector and each preset flow velocity value detected by the flow velocity detector.

[0056] When c1 < ci ≤ c2, the first preset flow rate correction coefficient y1 is selected to correct the current value ai * xi of the current regulating device again, and the corrected current value is ai * xi * y1.

[0057] When c2 < ci ≤ c3, the second preset flow rate correction coefficient y2 is selected to correct the current value ai * xi of the current regulating device again. The corrected current value is ai * xi * y2.

[0058] When c3 < ci ≤ c4, the third preset flow rate correction coefficient y3 is selected to correct the current value ai*xi of the current regulating device again, and the corrected current value is ai*xi*y3.

[0059] When c4 < ci, the fourth preset flow rate correction coefficient y4 is selected to further correct the current value ai*xi of the current regulating device, and the corrected current value is ai*xi*y4.

[0060] Compared with existing technologies, the current regulation system for wastewater treatment based on electrodialysis, as described in this embodiment of the invention, has the following advantages:

[0061] In this invention, the current value of the current regulating device is automatically adjusted by collecting the salt content of the wastewater through the control unit, and the current value is corrected by the detected temperature and flow rate of the wastewater to prevent polarization of the electrodialysis concentration and separation mechanism, thereby improving current efficiency and preventing scaling. Attached Figure Description

[0062] Figure 1 This is a schematic diagram of the current regulation system for treating wastewater based on electrodialysis in an embodiment of the present invention;

[0063] Figure 2 This is a schematic diagram of the control unit of the current regulation system for wastewater treatment based on electrodialysis in an embodiment of the present invention;

[0064] Figure 3 This is a schematic diagram of the connection of the acquisition module of the current regulation system for treating wastewater based on electrodialysis in an embodiment of the present invention. Detailed Implementation

[0065] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the invention.

[0066] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0067] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0068] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0069] like Figure 1As shown in the embodiments of this application, a current regulation system for treating wastewater based on electrodialysis is provided, comprising: an electrodialysis concentration and separation mechanism; a salinity detector, installed at the wastewater inlet of the electrodialysis concentration and separation mechanism, the salinity detector being used to detect the salinity of the wastewater; a temperature detector, installed at the wastewater inlet of the electrodialysis concentration and separation mechanism, the temperature detector being used to detect the temperature value of the wastewater; a flow rate detector, installed at the wastewater inlet of the electrodialysis concentration and separation mechanism, the flow rate detector being used to detect the flow rate value of the wastewater; a current regulation device, connected to the electrodialysis concentration and separation mechanism, the current regulation device being used to regulate the magnitude of the current value; and a control unit, electrically connected to the salinity detector, flow rate detector, temperature detector, and current regulation device respectively, the control unit being used to adjust and correct the magnitude of the current value based on the detected data.

[0070] Furthermore, the current value of the current regulating device is automatically adjusted by collecting the salinity of the wastewater through the control unit, and the current value is corrected by detecting the temperature and flow rate of the wastewater, so as to prevent polarization of the electrodialysis concentration and separation mechanism, thereby improving current efficiency and preventing scaling.

[0071] In an embodiment of this application, a current regulation system for treating wastewater via electrodialysis is provided. The control unit includes: a data acquisition module electrically connected to a salinity detector, a flow rate detector, and a temperature detector, respectively, for acquiring data parameters from the salinity detector, flow rate detector, and temperature detector, and transmitting the data parameters to a processing module; a processing module connected to the data acquisition module, for setting operating state commands for the current regulation device based on the data parameters; and a control module electrically connected to the current regulation device and connected to the processing module, for controlling the current regulation device according to the operating state commands set by the processing module.

[0072] Specifically, the acquisition module sends the acquired data parameters to the processing module, which analyzes and processes these data parameters, then sets a working state command and sends it to the control module, which performs specific current control according to the working state command.

[0073] In an embodiment of this application, a current regulation system for treating wastewater based on electrodialysis is provided. The acquisition module is used to acquire the salt content S detected by the salt content detector, and the control module is used to control the current regulation device.

[0074] The processing module is used to set a first preset salt content s1, a second preset salt content s2, a third preset salt content s3 and a fourth preset salt content s4, where s1 < s2 < s3 < s4; the processing module is also used to set a first preset current value a1, a second preset current value a2, a third preset current value a3 and a fourth preset current value a4, where a1 < a2 < a3 < a4.

[0075] Based on the relationship between the salt content detected by the salt content detector and the preset salt content, a preset current value ai is selected as the current value of the current regulating device.

[0076] When S≤s1, the first preset working condition a1 is selected as the current value of the current regulating device;

[0077] When s1 < S ≤ s2, the second preset working condition a2 is selected as the current value of the current regulating device;

[0078] When s2<S≤s3, the third preset working condition a3 is selected as the current value of the current regulating device;

[0079] When s3<S≤s4, the fourth preset working condition a4 is selected as the current value of the current regulating device;

[0080] When the i-th preset operating condition ai is selected as the current value of the current regulating device, the control module controls the current regulating device to adjust the current using the i-th preset current value ai, where i = 1, 2, 3, 4.

[0081] Specifically, the current value of the current regulating device is selected based on the relationship between the salt content detected by the salt content detector and the preset salt content, so that the selected current value can effectively prevent polarization of the electrodialysis concentration and separation mechanism.

[0082] In an embodiment of this application, a current regulation system for treating wastewater based on electrodialysis is provided. The processing module is used to determine whether the temperature value and the flow rate value of the wastewater exceed the corresponding preset values ​​after the current regulation device regulates the current. If neither the temperature value nor the flow rate value of the wastewater exceeds the corresponding preset value, the control module does not need to control the current regulation device to further correct the current value. If one or both of the temperature value and the flow rate value of the wastewater exceed the corresponding preset value, the control module needs to control the current regulation device to further correct the current value.

[0083] Specifically, after the processing module adjusts the current using the current regulating device based on the salinity, it needs to determine the temperature and flow rate of the wastewater. When the temperature and flow rate exceed the corresponding preset values, the current value needs to be corrected according to the following three situations. This correction can make the final current value obtained by the current regulating device more accurate, prevent polarization in the electrodialysis concentration and separation mechanism, thereby improving the efficiency of the current and preventing scaling.

[0084] In an embodiment of this application, a current regulation system for treating wastewater based on electrodialysis is provided. If one or both of the wastewater temperature and water flow rate exceed a corresponding preset value, the control module needs to control the current regulation device to further correct the current value. This includes: if the wastewater temperature exceeds the corresponding preset value, the control module controls the current regulation device to further correct the current value.

[0085] In an embodiment of this application, a current regulation system for treating wastewater via electrodialysis is provided. If the temperature of the wastewater exceeds a corresponding preset value, the control module controls the current regulation device to further correct the current value, including:

[0086] The acquisition module is used to acquire the temperature value bi detected by the temperature detector. The processing module is used to preset a first preset temperature b1, a second preset temperature b2, a third preset temperature b3, and a fourth preset temperature b4, where b1 < b2 < b3 < b4; and to preset a first preset temperature correction coefficient x1, a second preset temperature correction coefficient x2, a third preset temperature correction coefficient x3, and a fourth preset temperature correction coefficient x4, where 1 > x1 > x2 > x3 > x4 > 0.7.

[0087] The current value of the current regulating device is adjusted based on the relationship between the temperature value detected by the temperature detector and various preset temperatures.

[0088] When b1 < bi ≤ b2, the first preset temperature correction coefficient x1 is selected to correct the current value of the current regulating device, and the corrected current value is ai * x1;

[0089] When b2 < bi ≤ b3, the second preset temperature correction coefficient x2 is selected to correct the current value of the current regulating device, and the corrected current value is ai * x2;

[0090] When b3 < bi ≤ b4, the third preset temperature correction coefficient x3 is selected to correct the current value of the current regulating device, and the corrected current value is ai * x3;

[0091] When b4 < bi, the fourth preset temperature correction coefficient x4 is selected to correct the current value of the current regulating device, and the corrected current value is ai*x4.

[0092] In an embodiment of this application, a current regulation system for treating wastewater based on electrodialysis is provided. If one or both of the wastewater temperature and water flow rate exceed a corresponding preset value, the control module needs to control the current regulation device to further correct the current value, including: if the wastewater flow rate exceeds a corresponding preset value, the control module controls the current regulation device to further correct the current value.

[0093] In an embodiment of this application, a current regulation system for treating wastewater based on electrodialysis is provided. If the flow rate of the wastewater exceeds a corresponding preset value, the control module controls the current regulation device to further correct the current value.

[0094] The acquisition module is used to acquire the flow velocity value ci detected by the flow velocity detector. The processing module is used to preset a first preset flow velocity value c1, a second preset flow velocity value c2, a third preset flow velocity value c3, and a fourth preset flow velocity value c4, where c1 < c2 < c3 < c4. The processing module is also used to preset a first preset flow velocity correction coefficient y1, a second preset flow velocity correction coefficient y2, a third preset flow velocity correction coefficient y3, and a fourth preset flow velocity correction coefficient y4, where 1 > y1 > y2 > y3 > y4 > 0.5.

[0095] The current value ai of the current regulating device is corrected based on the relationship between the flow velocity value detected by the flow velocity detector and various preset flow velocity values:

[0096] When c1 < ci ≤ c2, the first preset flow rate correction coefficient y1 is selected to correct the current value ai of the current regulating device, and the corrected current value is ai * y1.

[0097] When c2 < ci ≤ c3, the second preset flow rate correction coefficient y2 is selected to correct the current value ai of the current regulating device, and the corrected current value is ai * y2.

[0098] When c3 < ci ≤ c4, the third preset flow rate correction coefficient y3 is selected to correct the current value ai of the current regulating device, and the corrected current value is ai * y3.

[0099] When c4 < ci, the fourth preset flow rate correction coefficient y4 is selected to correct the current value ai of the current regulating device, and the corrected current value is ai * y4.

[0100] In an embodiment of this application, a current regulation system for treating wastewater based on electrodialysis is provided. If one or both of the wastewater temperature and flow rate exceed the corresponding preset values, the control module needs to control the current regulation device to further correct the current value. This includes: if both the wastewater temperature and flow rate exceed the corresponding preset values, the control module controls the current regulation device to further correct the current value according to the temperature and flow rate in sequence.

[0101] In an embodiment of this application, a current regulation system for treating wastewater based on electrodialysis is provided. If both the temperature and flow rate of the wastewater exceed corresponding preset values, the control module controls the current regulation device to further correct the current value according to the temperature and flow rate, including:

[0102] The acquisition module is used to acquire the temperature value bi detected by the temperature detector. The processing module is used to preset a first preset temperature b1, a second preset temperature b2, a third preset temperature b3, and a fourth preset temperature b4, where b1 < b2 < b3 < b4; and to preset a first preset temperature correction coefficient x1, a second preset temperature correction coefficient x2, a third preset temperature correction coefficient x3, and a fourth preset temperature correction coefficient x4, where 1 > x1 > x2 > x3 > x4 > 0.7.

[0103] The current value ai of the current regulating device is corrected based on the relationship between the temperature value detected by the temperature detector and various preset temperatures.

[0104] When b1 < bi ≤ b2, the first preset temperature correction coefficient x1 is selected to correct the current value of the current regulating device, and the corrected current value is ai * x1;

[0105] When b2 < bi ≤ b3, the second preset temperature correction coefficient x2 is selected to correct the current value of the current regulating device, and the corrected current value is ai * x2;

[0106] When b3 < bi ≤ b4, the third preset temperature correction coefficient x3 is selected to correct the current value of the current regulating device, and the corrected current value is ai * x3;

[0107] When b4 < bi, the fourth preset temperature correction coefficient x4 is selected to correct the current value of the current regulating device, and the corrected current value is ai*x4;

[0108] The processing module is used to further correct the current value ai*xi obtained after correcting the current value ai according to the selected i-th preset first temperature correction coefficient xi, i = 1, 2, 3, 4;

[0109] The acquisition module is also used to acquire the flow velocity value ci detected by the flow velocity detector. The processing module is used to preset a first preset flow velocity value c1, a second preset flow velocity value c2, a third preset flow velocity value c3, and a fourth preset flow velocity value c4, where c1 < c2 < c3 < c4. The processing module is also used to preset a first preset flow velocity correction coefficient y1, a second preset flow velocity correction coefficient y2, a third preset flow velocity correction coefficient y3, and a fourth preset flow velocity correction coefficient y4, where 1 > y1 > y2 > y3 > y4 > 0.5.

[0110] The current value ai*xi of the current regulating device is further corrected based on the relationship between the flow velocity value detected by the flow velocity detector and each preset flow velocity value detected by the flow velocity detector.

[0111] When c1 < ci ≤ c2, the first preset flow rate correction coefficient y1 is selected to correct the current value ai * xi of the current regulating device again, and the corrected current value is ai * xi * y1.

[0112] When c2 < ci ≤ c3, the second preset flow rate correction coefficient y2 is selected to correct the current value ai * xi of the current regulating device again. The corrected current value is ai * xi * y2.

[0113] When c3 < ci ≤ c4, the third preset flow rate correction coefficient y3 is selected to correct the current value ai*xi of the current regulating device again, and the corrected current value is ai*xi*y3.

[0114] When c4 < ci, the fourth preset flow rate correction coefficient y4 is selected to further correct the current value ai*xi of the current regulating device, and the corrected current value is ai*xi*y4.

[0115] In summary, this invention provides a current regulation system for treating wastewater using electrodialysis, comprising: an electrodialysis concentration and separation mechanism; a salinity detector installed at the wastewater inlet of the electrodialysis concentration and separation mechanism to detect the salinity of the wastewater; a temperature detector installed at the wastewater inlet of the electrodialysis concentration and separation mechanism to detect the temperature of the wastewater; a flow rate detector installed at the wastewater inlet of the electrodialysis concentration and separation mechanism to detect the flow rate of the wastewater; a current regulation device connected to the electrodialysis concentration and separation mechanism to regulate the current value; and a control unit to adjust and correct the current value based on the detected data. In this invention, the current value of the current regulation device is automatically controlled by the control unit collecting the salinity of the wastewater, and the current value is corrected based on the detected temperature and flow rate of the wastewater to prevent polarization in the electrodialysis concentration and separation mechanism, thereby improving current efficiency and preventing scaling.

[0116] Finally, it should be noted that those skilled in the art can obviously make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims and their equivalents, this invention also intends to include these modifications and variations.

[0117] The above description is merely one embodiment of the present invention, and should not be construed as limiting the scope of the invention. Any structural changes made based on the present invention, as long as they do not depart from the essence of the invention, should be considered as falling within the protection scope of the present invention and subject to its restrictions. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process and related descriptions of the system described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0118] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0119] The technical solutions of the present invention have been described above with reference to the accompanying drawings and further embodiments. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

[0120] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A current regulation system for treating wastewater based on electrodialysis, characterized in that, The application relates to a device for detecting and adjusting the current value of an electrodialysis concentration separation mechanism. The device comprises: an electrodialysis concentration separation mechanism; a salt content detector arranged at the wastewater inlet of the electrodialysis concentration separation mechanism, which is used for detecting the salt content of the wastewater; a temperature detector arranged at the wastewater inlet of the electrodialysis concentration separation mechanism, which is used for detecting the temperature value of the wastewater; a flow rate detector arranged at the wastewater inlet of the electrodialysis concentration separation mechanism, which is used for detecting the flow rate value of the wastewater; a current adjusting device connected with the electrodialysis concentration separation mechanism, which is used for adjusting the size of the current value; a control unit electrically connected with the salt content detector, the flow rate detector, the temperature detector and the current adjusting device, which is used for adjusting and correcting the size of the current value according to the detected data; The control unit comprises: a collection module electrically connected with the salt content detector, the flow rate detector and the temperature detector, which is used for collecting the data parameters of the salt content detector, the flow rate detector and the temperature detector and transmitting the data parameters to a processing module; a processing module connected with the collection module, which is used for setting the working state instruction of the current adjusting device according to the data parameters; a control module electrically connected with the current adjusting device and the processing module, which is used for controlling the current adjusting device according to the working state instruction set by the processing module; The collection module is used for collecting the salt content S detected by the salt content detector, and the control module is used for controlling the current adjusting device; The processing module is used for setting a first preset salt content s1, a second preset salt content s2, a third preset salt content s3 and a fourth preset salt content s4, and s1 < s2 < s3 < s4; the processing module is also used for setting a first preset current value a1, a second preset current value a2, a third preset current value a3 and a fourth preset current value a4, wherein a1 < a2 < a3 < a4; According to the relationship between the collected salt content detected by the salt content detector and the set preset salt content, the preset current value ai is selected as the current value of the current adjusting device; When S <= s1, the first preset current value a1 is selected as the current value of the current adjusting device; When s1 < S <= s2, the second preset current value a2 is selected as the current value of the current adjusting device; When s2 < S <= s3, the third preset current value a3 is selected as the current value of the current adjusting device; When s3 < S <= s4, the fourth preset current value a4 is selected as the current value of the current adjusting device; When the ith preset current value ai is selected as the current value of the current adjusting device, the control module controls the current adjusting device to adjust at the ith preset current value ai, i = 1, 2, 3, 4; The processing module is used for judging whether the temperature value and the flow rate value of the wastewater exceed the corresponding preset values after the current adjusting device adjusts the current. If the value of either the temperature value or the flow rate value of the wastewater does not exceed the corresponding preset value, the control module does not need to control the current adjusting device to further modify the current value; If the value of either or both of the temperature value and the flow rate value of the wastewater exceeds the corresponding preset value, the control module needs to control the current adjusting device to further modify the current value.

2. The current regulation system for treating wastewater based on electrodialysis according to claim 1, characterized in that, If the value of either or both of the temperature value and the flow rate value of the wastewater exceeds the corresponding preset value, the control module needs to control the current adjusting device to further modify the current value, including: If the temperature value of the wastewater exceeds the corresponding preset value, the control module controls the current adjusting device to further modify the current value.

3. The current regulation system for treating wastewater by electrodialysis according to claim 2, wherein If the temperature value of the wastewater exceeds the corresponding preset value, the control module controls the current adjusting device to further modify the current value, including: The collection module is configured to acquire the temperature value bi detected by the temperature detector, and the processing module is configured to preset a first preset temperature b1, a second preset temperature b2, a third preset temperature b3, and a fourth preset temperature b4, and b1 < b2 < b3 < b4; a first preset temperature correction coefficient x1, a second preset temperature correction coefficient x2, a third preset temperature correction coefficient x3, and a fourth preset temperature correction coefficient x4 are preset, and 1 > x1 > x2 > x3 > x4 > 0.7; The current value of the current adjusting device is modified according to the relationship between the temperature value detected by the temperature detector and each preset temperature: When b1 < bi ≤ b2, the first preset temperature correction coefficient x1 is selected to modify the current value of the current adjusting device, and the modified current value is ai * x1; When b2 < bi ≤ b3, the second preset temperature correction coefficient x2 is selected to modify the current value of the current adjusting device, and the modified current value is ai * x2; When b3 < bi ≤ b4, the third preset temperature correction coefficient x3 is selected to modify the current value of the current adjusting device, and the modified current value is ai * x3; When b4 < bi, the fourth preset temperature correction coefficient x4 is selected to modify the current value of the current adjusting device, and the modified current value is ai * x4.

4. The current regulation system for treating wastewater by electrodialysis according to claim 1, wherein If the value of either or both of the temperature value and the flow rate value of the wastewater exceeds the corresponding preset value, the control module needs to control the current adjusting device to further modify the current value, including: If the flow rate value of the wastewater exceeds the corresponding preset value, the control module controls the current adjusting device to further modify the current value.

5. The current regulation system for treating wastewater by electrodialysis according to claim 4, wherein If the flow rate value of the wastewater exceeds the corresponding preset value, the control module controls the current adjusting device to further modify the current value; The acquisition module is configured to acquire the flow rate value ci detected by the flow rate detector, the processing module is configured to pre-set a first preset flow rate value c1, a second preset flow rate value c2, a third preset flow rate value c3 and a fourth preset flow rate value c4, and c1 The current value ai of the current adjusting device is corrected according to the relationship between the temperature value detected by the temperature detector and each preset temperature value: When b1 When b1 When b2 When b2 6. The current regulation system for treating wastewater by electrodialysis according to claim 1, wherein When b3 When b3 7. The current regulation system for treating wastewater by electrodialysis according to claim 6, wherein When b4 When b4 ​ ​ ​ When b3 < bi ≤ b4, the third preset temperature correction coefficient x3 is selected to correct the current value of the current regulating device, and the corrected current value is ai * x3; When b4 < bi, the fourth preset temperature correction coefficient x4 is selected to correct the current value of the current regulating device, and the corrected current value is ai * x4; The processing module is configured to correct the current value ai * xi obtained by correcting the current value ai according to the selected ith preset first temperature correction coefficient xi, i = 1, 2, 3, 4; The acquisition module is further configured to acquire the flow rate value ci detected by the flow rate detector, and the processing module is configured to pre-set a first preset flow rate value c1, a second preset flow rate value c2, a third preset flow rate value c3 and a fourth preset flow rate value c4, and c1 < c2 < c3 < c4; the processing module is further configured to pre-set a first preset flow rate correction coefficient y1, a second preset flow rate correction coefficient y2, a third preset flow rate correction coefficient y3 and a fourth preset flow rate correction coefficient y4, and 1 > y1 > y2 > y3 > y4 > 0.5; The current value ai * xi of the current regulating device is corrected again according to the relationship between the flow rate value detected by the flow rate detector and each preset flow rate value detected by the flow rate detector; When c1 < ci ≤ c2, the first preset flow rate correction coefficient y1 is selected to correct the current value ai * xi of the current regulating device again, and the corrected current value is ai * xi * y1; When c2 < ci ≤ c3, the second preset flow rate correction coefficient y2 is selected to correct the current value ai * xi of the current regulating device again, and the corrected current value is ai * xi * y2; When c3 < ci ≤ c4, the third preset flow rate correction coefficient y3 is selected to correct the current value ai * xi of the current regulating device again, and the corrected current value is ai * xi * y3; When c4 < ci, the fourth preset flow rate correction coefficient y4 is selected to correct the current value ai * xi of the current regulating device again, and the corrected current value is ai * xi * y4.

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