Fluorine removal agent dosage control method, device and equipment and computer readable storage medium

Abstract

The embodiment of the invention provides a fluorine removal agent dosage control method, device and equipment and a computer readable storage medium. The method comprises the following steps: acquiring inlet monitoring parameters of an inlet and outlet monitoring parameters of an outlet of the defluorination device; according to the inlet monitoring parameters, the outlet monitoring parameters and the outlet fluorine ion concentration set value, the dosage of the fluorine removal agent is calculated; and the dosing device is controlled to add the fluorine removal agent into the fluorine removal device according to the dosing amount. In this way, the dosage of the fluorine removal agent can be accurately and automatically calculated according to the inlet and outlet parameters and the outlet fluorine ion concentration set value of the fluorine removal device, so that the adjustment work of the dosage of the fluorine removal agent is reduced, and the fluorine removal effect on mine water is ensured.

Description

Technical Field

[0001] This disclosure relates to the field of chemical dosing, and more particularly to the field of dosage control technology for defluorinating agents. Background Technology

[0002] During coal mining, large amounts of mine water are discharged. Fluorine is a trace element found in relatively high concentrations in coal, and pollutants such as fluorides from coal can enter groundwater, causing significant harm and severe pollution of freshwater resources. Therefore, effective treatment of fluoride-containing mine water is necessary during coal mining to reduce water pollution.

[0003] However, existing defluoridator addition systems are simple and too direct, generally involving continuous constant dosage. For fluctuations in mine water quality and quantity, as well as changes in the effluent indicators of the defluoridation system, most of the adjustments are made manually based on judgment and calculation. These adjustments are lagging and inaccurate, and the workload of adjusting the defluoridator dosage is high, making it difficult to guarantee the defluoridation effect. Summary of the Invention

[0004] This disclosure provides a method, apparatus, equipment, and storage medium for controlling the dosage of a defluorinating agent.

[0005] According to a first aspect of this disclosure, a method for controlling the dosage of a fluoride removal agent is provided. The method includes:

[0006] The inlet monitoring parameters and outlet monitoring parameters of the defluorination device are obtained. Mine water flows into the defluorination device, and a defluorinating agent is added to remove fluoride ions from the mine water. The inlet monitoring parameters include: the inlet flow rate of the mine water, the inlet fluoride ion concentration, the inlet temperature of the mine water, and the inlet pH of the mine water. The outlet monitoring parameters include: the outlet fluoride ion concentration over a historical time period.

[0007] Obtain the set value for the outlet fluoride ion concentration;

[0008] The dosage of the defluorinating agent is calculated based on the import monitoring parameters, the export monitoring parameters, and the export fluoride ion concentration setpoint.

[0009] The dosing device is controlled to add defluorinating agent to the defluorination device according to the dosage.

[0010] In addition to the aspects and any possible implementations described above, a further implementation is provided, wherein calculating the dosage of the defluorinating agent based on the inlet monitoring parameters, the outlet monitoring parameters, and the outlet fluoride ion concentration setpoint includes:

[0011] The dosage of the defluorinating agent is calculated according to a preset defluorinating agent dosage formula, wherein the preset defluorinating agent dosage formula includes:

[0012] M = Q × (C O -Ci)×q×K1+△κ

[0013] M is the dosage of the defluoridating agent, Q is the influent flow rate, and C is the concentration of the defluoridating agent. O The concentration of imported fluoride ions, C i The set value for the outlet fluoride ion concentration is given by q, where q is the standard value for the adsorption capacity of the defluorinating agent, K1 is the adsorption capacity calibration coefficient, and Δκ is the compensation amount of the defluorinating agent.

[0014] In addition to the aspects and any possible implementations described above, an implementation is further provided in which the amount of defluorinating agent compensation is related to the outlet fluoride ion concentration during the historical time period and the set value of the outlet fluoride ion concentration;

[0015] The adsorption capacity calibration coefficient is related to the inlet water temperature and pH, where pH is the acidity or alkalinity of the inlet water.

[0016] In addition to the aspects and any possible implementations described above, a further implementation is provided, wherein the method further includes:

[0017] Obtain the turbidity setpoint for the outlet water;

[0018] The step of calculating the dosage of the defluorinating agent based on the inlet monitoring parameters, the outlet monitoring parameters, and the outlet fluoride ion concentration setpoint includes:

[0019] The dosage of the defluoridating agent is calculated based on the inlet monitoring parameters, the outlet monitoring parameters, the outlet water turbidity setpoint, and the outlet fluoride ion concentration setpoint.

[0020] In accordance with the aspects and any possible implementations described above, a further implementation is provided, wherein the defluorination device includes a mixing reactor and a solid-liquid separator connected to the mixing reactor, wherein the mixing reactor is used to mix the mine water and the defluorinating agent, and to convey the sludge after the mixing reaction to the solid-liquid separator, the solid-liquid separator being used to separate the solids and liquids in the sludge; the method further includes:

[0021] Monitor the current sludge level in the solid-liquid separator;

[0022] Compare the current mud level with the preset upper limit mud level and the preset lower limit mud level;

[0023] If the current mud level is greater than the preset upper limit of mud level, the solid-liquid separator is activated to discharge the solid and the liquid.

[0024] If the current mud level is less than the preset lower limit of mud level, then the solid-liquid separator is controlled to stop discharging the solid and the liquid.

[0025] In addition to the aspects and any possible implementations described above, an implementation is further provided in which the outlet fluoride ion concentration setting value includes a first outlet fluoride ion concentration setting value and a second outlet fluoride ion concentration setting value, wherein the first outlet fluoride ion concentration setting value is greater than the second outlet fluoride ion concentration setting value.

[0026] The step of calculating the dosage of the defluorinating agent based on the inlet monitoring parameters, the outlet monitoring parameters, and the outlet fluoride ion concentration setpoint includes:

[0027] The dosage of the defluorinating agent is calculated based on the import monitoring parameters, the export monitoring parameters, and the first set value of the export fluoride ion concentration.

[0028] After the dosing device adds defluorinating agent to the defluorination device according to the dosing amount, the outlet fluoride ion concentration is monitored for the current time period.

[0029] If the outlet fluoride ion concentration is less than the second set value of the outlet fluoride ion concentration during the current time period, the dosage of the defluorinating agent is calculated based on the inlet monitoring parameters, the outlet monitoring parameters, and the second set value of the outlet fluoride ion concentration.

[0030] In addition to the aspects and any possible implementations described above, an implementation is further provided in which the dosage of the defluorinating agent includes the dosage of the defluorinating agent for the current time period;

[0031] The method further includes:

[0032] The total amount of defluoridating agent is calculated based on the influent flow rate, the inlet fluoride ion concentration, and the outlet fluoride ion concentration set values.

[0033] According to a second aspect of this disclosure, a defluorinating agent dosage control device is provided. The device includes:

[0034] The first acquisition module is used to acquire inlet monitoring parameters and outlet monitoring parameters of the defluorination device. The defluorination device contains mine water and a defluorinating agent, which removes fluoride ions from the mine water. The inlet monitoring parameters include: the inlet flow rate of the mine water, the inlet fluoride ion concentration, the inlet temperature of the mine water, and the inlet pH of the mine water. The outlet monitoring parameters include: the outlet fluoride ion concentration over a historical time period.

[0035] The second acquisition module is used to acquire the set value of the outlet fluoride ion concentration.

[0036] The calculation module is used to calculate the dosage of the defluorinating agent based on the inlet monitoring parameters, the outlet monitoring parameters, and the outlet fluoride ion concentration setpoint.

[0037] An addition module is used to control the dosing device to add defluorinating agent to the defluorination device according to the dosing amount.

[0038] According to a third aspect of this disclosure, an electronic device is provided. The electronic device includes a memory and a processor, wherein the memory stores a computer program, and the processor executes the program to implement the method described above.

[0039] According to a fourth aspect of this disclosure, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements the method according to a first aspect of this disclosure.

[0040] In this disclosure, by acquiring the inlet monitoring parameters, outlet monitoring parameters, and outlet fluoride ion concentration setpoint of the defluorination device, the dosage of the defluorinating agent can be accurately calculated based on these parameters. Then, the dosing device is controlled to add the defluorinating agent to the defluorination device according to this dosage. This allows for precise and automatic calculation of the defluorinating agent dosage based on the inlet and outlet parameters and the outlet fluoride ion concentration setpoint, reducing the need for dosage adjustments and ensuring effective defluorination of mine water.

[0041] It should be understood that the description in the Summary of the Invention section is not intended to limit the key or essential features of the embodiments of this disclosure, nor is it intended to restrict the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0042] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. The drawings are provided for a better understanding of the invention and are not intended to limit the scope of this disclosure. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0043] Figure 1 A flowchart of a method for controlling the dosage of defluorinating agent according to an embodiment of the present disclosure is shown;

[0044] Figure 2 A block diagram of a defluorinating agent dosage control system according to an embodiment of the present disclosure is shown;

[0045] Figure 3 A block diagram of another defluorinating agent dosage control system according to an embodiment of the present disclosure is shown;

[0046] Figure 4 A block diagram of a defluorinating agent dosage control device according to an embodiment of the present disclosure is shown;

[0047] Figure 5 A block diagram of an exemplary electronic device capable of implementing embodiments of the present disclosure is shown. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0049] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0050] Figure 1 A flowchart of a method 100 for controlling the dosage of a defluorinating agent according to an embodiment of the present disclosure is shown. Method 100 may include:

[0051] Step 110: Obtain the inlet monitoring parameters and outlet monitoring parameters of the defluorination device. The defluorination device contains mine water and a defluorinating agent used to remove fluoride ions from the mine water. The inlet monitoring parameters include: the inlet flow rate of the mine water, the inlet fluoride ion concentration, the inlet temperature of the mine water, and the inlet pH of the mine water. The outlet monitoring parameters include: the outlet fluoride ion concentration over a historical time period.

[0052] Defluorination devices include, for example Figure 2 The mixing reactor, solid-liquid separator, sludge treatment device, and sludge conveying device shown are used to mix mine water and defluorinating agent to produce a reaction. The resulting sludge is then conveyed to the solid-liquid separator, which separates the solids and liquids in the sludge and discharges them. The discharged liquid enters the production water tank, and the discharged solids enter the sludge treatment device. After dewatering by the sludge treatment device, the sludge is conveyed to the underground solidification treatment device.

[0053] Additionally, it can be found in, for example Figure 2The defluoridation device shown is equipped with an inlet flow meter FT, an online F-ion monitoring instrument, a temperature detector T, and an inlet water pH detector at the inlet, and an online F-ion monitoring instrument at the outlet of the defluoridation device.

[0054] Step 120: Obtain the set value of the outlet fluoride ion concentration;

[0055] Step 130: Calculate the dosage of the defluorinating agent based on the inlet monitoring parameters, the outlet monitoring parameters, and the outlet fluoride ion concentration set value; the defluorinating agent is produced from coal-based solid waste and is mainly added as dry powder.

[0056] Step 140: Control the dosing device to add defluorinating agent to the defluorination device according to the dosing amount.

[0057] By acquiring the inlet monitoring parameters, outlet monitoring parameters, and outlet fluoride ion concentration setpoint of the defluorination device, the dosage of the defluorinating agent can be accurately calculated based on these parameters. The dosing device is then controlled to add the defluorinating agent to the device according to this dosage. This allows for precise and automatic calculation of the defluorinating agent dosage based on the inlet and outlet parameters and the outlet fluoride ion concentration setpoint, reducing the need for dosage adjustments and ensuring effective defluorination of mine water.

[0058] In some embodiments, calculating the dosage of the defluorinating agent based on the inlet monitoring parameters, the outlet monitoring parameters, and the outlet fluoride ion concentration setpoint includes:

[0059] The dosage of the defluorinating agent is calculated according to a preset defluorinating agent dosage formula, wherein the preset defluorinating agent dosage formula includes:

[0060] M = Q × (C O -Ci)×q×K1+△κ

[0061] M is the dosage of the defluoridating agent, Q is the influent flow rate, and C is the concentration of the defluoridating agent. O Where is the inlet fluoride ion concentration, Ci is the set value of the outlet fluoride ion concentration, q is the standard value of the defluorinating agent adsorption capacity, K1 is the adsorption capacity calibration coefficient, and Δκ is the defluorinating agent compensation amount.

[0062] q = q0 × K1

[0063] q is the standard value of the defluoridator adsorption capacity in mg / g, q0 is the theoretical adsorption capacity, and K1 is the adsorption capacity calibration coefficient, which is a function of the inlet water temperature and the inlet water pH.

[0064] By using the above-mentioned preset defluoridant dosage formula, the dosage of defluoridant can be calculated accurately and automatically based on the inlet and outlet parameters of the defluoridation device and the set value of the outlet fluoride ion concentration. This reduces the need for adjusting the defluoridant dosage and ensures the defluoridation effect on mine water.

[0065] In some embodiments, the amount of defluorinating agent compensation is related to the outlet fluoride ion concentration during the historical time period and the set value of the outlet fluoride ion concentration;

[0066] Defluorinating agent compensation amount Δκ=K2×C bc +b, K2 is the proportionality constant (as shown in the example) Figure 2 The frequency of the inverter in the defluorination dosing device shown, the characteristics of the pump in the defluorination dosing device, and the viscosity of the defluorinating agent and the mine water are all related (b is a constant, C is C). bc It is related to the historical period's export fluoride ion concentration and the set value of the export fluoride ion concentration, such as C. bc It can be equal to the absolute value of the difference between the historical export fluoride ion concentration and the set value of the export fluoride ion concentration.

[0067] The adsorption capacity calibration coefficient is related to the inlet water temperature and pH, where pH is the acidity or alkalinity of the inlet water.

[0068] In some embodiments, the method further includes:

[0069] Obtain the turbidity setpoint for the outlet water;

[0070] A turbidity meter can be installed on the defluorination device, such as... Figure 2 As shown, this is to accurately measure the current turbidity.

[0071] The step of calculating the dosage of the defluorinating agent based on the inlet monitoring parameters, the outlet monitoring parameters, and the outlet fluoride ion concentration setpoint includes:

[0072] The dosage of the defluoridating agent is calculated based on the inlet monitoring parameters, the outlet monitoring parameters, the outlet water turbidity setpoint, and the outlet fluoride ion concentration setpoint.

[0073] Since excessive dosage of defluorinating agent can lead to excessive turbidity in the defluorinated water and poor clarification, an outlet turbidity setpoint can be set for the defluorinating device. Based on the inlet monitoring parameters, the outlet monitoring parameters, the outlet turbidity setpoint, and the outlet fluoride ion concentration setpoint, the dosage of the defluorinating agent can be accurately calculated. This limits the dosage of the defluorinating agent by using the outlet turbidity setpoint and the outlet fluoride ion concentration setpoint, thus preventing excessive dosage.

[0074] In some embodiments, the defluorination device includes a mixing reactor and a solid-liquid separator connected to the mixing reactor, wherein the mixing reactor is used to mix the mine water and the defluorinating agent, and to convey the sludge after the mixing reaction to the solid-liquid separator, the solid-liquid separator being used to separate the solids and liquids in the sludge; the method further includes:

[0075] Monitor the current sludge level in the solid-liquid separator; a sludge level gauge can be installed on the defluorination device, such as... Figure 2 As shown, this accurately indicates the current mud level.

[0076] Compare the current mud level with the preset upper limit mud level and the preset lower limit mud level;

[0077] If the current mud level is greater than the preset upper limit of mud level, the solid-liquid separator is activated to discharge the solid and the liquid.

[0078] If the current mud level is less than the preset lower limit of mud level, then the solid-liquid separator is controlled to stop discharging the solid and the liquid.

[0079] If the current mud level is greater than the preset upper limit of the mud level, the solid-liquid separator is activated to discharge the solids and liquids, thereby preventing the mud level in the solid-liquid separator from being too high; if the current mud level is less than the preset lower limit of the mud level, the solid-liquid separator is controlled to stop discharging the solids and liquids, thereby preventing the mud level in the solid-liquid separator from being too low. In this way, the solids and liquids in the solid-liquid separator can be discharged in a timely manner, ensuring that the mud level in the solid-liquid separator is always at a suitable height.

[0080] In some embodiments, the outlet fluoride ion concentration setting value includes a first setting value for outlet fluoride ion concentration and a second setting value for outlet fluoride ion concentration, wherein the first setting value for outlet fluoride ion concentration is greater than the second setting value for outlet fluoride ion concentration;

[0081] The step of calculating the dosage of the defluorinating agent based on the inlet monitoring parameters, the outlet monitoring parameters, and the outlet fluoride ion concentration setpoint includes:

[0082] The dosage of the defluorinating agent is calculated based on the import monitoring parameters, the export monitoring parameters, and the first set value of the export fluoride ion concentration.

[0083] After the dosing device adds defluorinating agent to the defluorination device according to the dosing amount, the outlet fluoride ion concentration is monitored for the current time period.

[0084] If the outlet fluoride ion concentration is less than the second set value of the outlet fluoride ion concentration during the current time period, the dosage of the defluorinating agent is calculated based on the inlet monitoring parameters, the outlet monitoring parameters, and the second set value of the outlet fluoride ion concentration.

[0085] The outlet fluoride ion concentration setting value can include a first outlet fluoride ion concentration setting value and a second outlet fluoride ion concentration setting value, namely a high-level fluoride ion concentration setting value and a low-level fluoride ion concentration setting value. Then, based on the inlet monitoring parameters, the outlet monitoring parameters, and the first outlet fluoride ion concentration setting value, the dosage of the defluorinating agent can be accurately calculated. After adding the defluorinating agent to the defluorination device according to the dosage, the outlet fluoride ion concentration for the current time period is monitored. If the outlet fluoride ion concentration for the current time period is less than the second outlet fluoride ion concentration setting value, it indicates that the fluoride ion concentration has dropped very low and the actual added defluorinating agent dosage is too large. Therefore, the dosage of the defluorinating agent can be recalculated based on the inlet monitoring parameters, the outlet monitoring parameters, and the second outlet fluoride ion concentration setting value, so as to accurately adjust the dosage of the defluorinating agent in a timely manner.

[0086] In some embodiments, the dosage of the defluorinating agent includes the dosage of the defluorinating agent for the current time period;

[0087] The method further includes:

[0088] The total amount of defluoridating agent is calculated based on the influent flow rate, the inlet fluoride ion concentration, and the outlet fluoride ion concentration set values.

[0089] In addition to calculating the dosage of defluoridator for a certain period of time, the total amount of defluoridator can also be accurately calculated based on the influent flow rate, the inlet fluoride ion concentration, and the outlet fluoride ion concentration set values.

[0090] For example, C = Q × (C O -C i )

[0091] C represents the total amount of defluoridating agent, and Q represents the influent flow rate (m). 3 / h,C O Ci represents the inlet fluoride ion concentration (mg / L), and Ci represents the outlet fluoride ion concentration setpoint (mg / L).

[0092] The following will combine Figure 2 Further details of the technical solution disclosed herein:

[0093] This disclosure discloses a system for removing fluoride ions from mine water using a coal-based solid waste fluoride removal agent, which mainly includes a control system, a dosing system, and a fluoride removal device.

[0094] Main processing flow: Mine water is pumped to the mixing reactor of the defluorination unit. After the defluorination agent is added and the mixture reacts, it enters the solid-liquid separation unit. The supernatant enters the next treatment unit (product water tank) or is reused. The sludge formed by the defluorination agent is sent to the mine for solidification and disposal via a sludge dewatering machine (i.e., sludge treatment unit) and then via a belt conveyor of the sludge conveyor.

[0095] The control scheme is as follows: The inlet of the defluorination unit is equipped with a flow meter (FT), an online fluoride ion monitoring instrument, and temperature and pH sensors. These parameters are sent to a host computer via a communication module. The host computer calculates the required real-time dosage based on the feedforward and fuzzy feedback units, converts this dosage into the frequency value of the dosing device, and transmits this set frequency value to the variable frequency dosing system (VFD) via the communication module. Figure 2 The defluorination dosing system (also known as the dosing device) in the system achieves precise dosing of the required amount of chemicals through feedback adjustment, and uses a PLC as a safety interlock device to realize online adjustment of the dosing amount and removal effect.

[0096] The defluorinating agent added in this control method is determined by the feedforward mathematical model shown in the following equation:

[0097] M = Q × (C O -Ci)×q×K1+△κ

[0098] M represents the dosage of the defluorinating agent, in g / h.

[0099] Q is the inflow rate, m 3 / h

[0100] C O The concentration of the imported fluoride ions is given in mg / L.

[0101] C i The set value for the outlet fluoride ion concentration is mg / L.

[0102] q represents the standard value of the adsorption capacity of the defluorinating agent, in mg / g.

[0103] K1 is the adsorption capacity calibration coefficient, which is a temperature- and pH-dependent calibration coefficient.

[0104] t represents the inlet water temperature, in °C.

[0105] pH refers to the acidity or alkalinity of the influent.

[0106] △κ represents the compensation amount of defluorinating agent, in g / h.

[0107] In this defluorinating agent dosing control model, the outlet value Ci needs to be set first; the inlet fluoride ion concentration C is collected through on-site data. OThe parameters include influent flow rate, influent temperature, influent pH, sludge level, and turbidity; K1 is the calibration coefficient for the defluoridant adsorption capacity, a value related to temperature and pH. Δκ is related to the outlet fluoride ion concentration and the setpoint for the outlet fluoride ion concentration during the historical time period.

[0108] △κ=K2×C bc +b, K2 is the proportionality coefficient, b is a constant, C bc It is related to the outlet fluoride ion concentration during the historical period and the set value of the outlet fluoride ion concentration.

[0109] The following will combine Figure 3 Further details of the technical solution disclosed herein:

[0110] like Figure 3 As shown: After pretreatment, the mine water is pumped into the defluorination unit. First, it enters the mixing reactor, where a coal-based solid waste defluorinating agent is added. The two are mixed and reacted by a mixer. The reaction time in the mixing reactor is controlled at HRT = 5-15 min. After the reaction is completed, it is pumped to the solid-liquid separator to separate the defluorinating agent from the mine water. The produced water enters the production water tank, and the generated sludge enters the sludge treatment device. After dewatering, it is sent to the underground solidification treatment via the sludge conveying device.

[0111] This disclosure includes an online monitoring instrument for influent fluoride ions, flow rate, pH, and temperature at the system inlet to collect data on influent water quality; a dosing rate monitoring instrument at the dosing device outlet to provide real-time feedback on dosing; a sludge level meter and a turbidity meter at the solid-liquid separation device to monitor sludge levels and discharge it promptly, and to adjust the stirring intensity and coagulant dosage based on turbidity data; and an online monitoring instrument for fluoride ions at the product outlet to monitor effluent water quality data in real time, and to feed this data back to the control system to adjust the dosing rate accordingly.

[0112] like Figure 3 The coal-based solid waste fluoride removal agent dosage control system disclosed herein mainly includes: a feedforward unit consisting of a feedforward model, a setting unit, and a feedforward controller; a feedback unit consisting of data acquisition and a fuzzy system; and a fluoride removal dosing system. The feedforward model of the feedforward unit and the fuzzy system of the feedback unit are the most important factors affecting the dosing of the system.

[0113] The parameters involved in the feedforward model mainly include influent and effluent fluoride concentration, influent flow rate, temperature, pH, turbidity, and sludge level gauge.

[0114] The total amount of fluoride removed by the defluorinating agent can be determined by the flow rate and the concentration of F ions at the inlet and outlet.

[0115] C = Q × (C O -C i (1)

[0116] C represents the total amount of defluoridating agent, and Q represents the influent flow rate (m). 3 / h,C O Ci represents the inlet fluoride ion concentration (mg / L), and Ci represents the outlet fluoride ion concentration setpoint (mg / L).

[0117] The working adsorption capacity of coal-based solid waste fluoride adsorbent was determined by factors such as temperature and pH.

[0118] q=q0×K1 (2)

[0119] q is the standard value of the defluoridator adsorption capacity in mg / g, q0 is the theoretical adsorption capacity, and K1 is the calibration coefficient, which is a function of the inlet water temperature and the inlet water pH.

[0120] The feedback module consists of a fuzzy system. The inlet and outlet fluoride ion concentrations and the inlet water flow rate are used as input parameters to the fuzzy system, which outputs a control compensation value. This compensation value is used by the fuzzy system to generate a corresponding compensation quantity based on a given relationship.

[0121] Imported fluorine content: Follow up on historical data statistics of imported fluorine ion online monitoring instruments to determine the domain of values ​​for imported fluorine ion concentration.

[0122] Inlet flow rate: Based on the inlet flow meter of the mine water defluoridation system, the instantaneous inlet flow rate can be monitored, the average inlet flow rate can be determined based on the cumulative flow rate, and the domain of the inlet flow rate can be determined based on the above data.

[0123] Fluorine content at the outlet: According to the Class III standard of "GB3838-2002 Surface Water Environmental Quality Standard", the concentration of fluoride ions in the outlet water is less than 1 mg / L, that is, the maximum value is determined to be 1 mg / L. In order to ensure that the outlet water can stably meet the national standard, the value of more than 0.75 mg / L is set as high. By setting low and medium values, the range of values ​​for the outlet fluoride ion concentration is determined.

[0124] The final defluorinating agent dosage model is as follows:

[0125] M = Q × (C O -Ci)×q×K1+△κ (3)

[0126] Each variable selects its membership function type and parameters according to actual requirements, establishing a membership function for defluorinator dosing that conforms to the actual situation. The determination of membership functions generally includes fuzzy statistical methods, illustrative methods, expert experience methods, and group decision-making methods; this disclosure primarily adopts the expert determination method.

[0127] Establishing a complete and comprehensive set of fuzzy rules based on the experience of experts is a prerequisite for the defluorination fuzzy system to make correct decisions.

[0128] Based on the input variables, a fuzzy rule table for the dosing system is determined. The fuzzy rule table can be flexibly adjusted according to the number of input and output variables and their domain of discourse in the actual system.

[0129] The process of fuzzy reasoning is as follows:

[0130] First, based on the three input variables of inlet and outlet F ion concentration and inlet water flow rate, the universe of discourse values ​​for the three cases of fuzzy rules are calculated; the conclusion is deduced from the premises using the fuzzy implication operation of the minimum operation rule proposed by Mamdani; then, the final conclusion is synthesized using the fuzzy union (Max) synthesis rule; the central method is used in the defuzzification process to realize the conversion of the fuzzy quantity output by the system to the numerical output. The host computer calculates the required dosage based on model (3), and calculates the working frequency of the dosing device from the conversion relationship between dosage and frequency value, thereby realizing the dosing of defluoridant.

[0131] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this disclosure is not limited to the described order of actions, because according to this disclosure, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to this disclosure.

[0132] The above is an introduction to the method embodiments. The following describes the solution described in this disclosure further through device embodiments.

[0133] Figure 4 A block diagram of a defluorinating agent dosage control device 400 according to an embodiment of the present disclosure is shown.

[0134] like Figure 4 As shown, the device 400 includes:

[0135] The first acquisition module 410 is used to acquire inlet monitoring parameters and outlet monitoring parameters of the defluorination device. The defluorination device contains mine water and a defluorinating agent, which is used to remove fluoride ions from the mine water. The inlet monitoring parameters include: the inlet flow rate of the mine water, the inlet fluoride ion concentration, the inlet temperature of the mine water, and the inlet pH of the mine water. The outlet monitoring parameters include: the outlet fluoride ion concentration over a historical time period.

[0136] The second acquisition module 420 is used to acquire the outlet fluoride ion concentration set value;

[0137] The calculation module 430 is used to calculate the dosage of the defluorinating agent based on the inlet monitoring parameters, the outlet monitoring parameters, and the outlet fluoride ion concentration set value.

[0138] The addition module 440 is used to control the dosing device to add defluorinating agent to the defluorination device according to the dosing amount.

[0139] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the described module can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0140] According to embodiments of the present disclosure, the present disclosure also provides an electronic device and a non-transitory computer-readable storage medium storing computer instructions.

[0141] Figure 5 A schematic block diagram of an electronic device 800 that can be used to implement embodiments of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the present disclosure described and / or claimed herein.

[0142] Device 800 includes a computing unit 801, which can perform various appropriate actions and processes based on a computer program stored in read-only memory (ROM) 802 or a computer program loaded from storage unit 808 into random access memory (RAM) 803. RAM 803 may also store various programs and data required for the operation of device 800. The computing unit 801, ROM 802, and RAM 803 are interconnected via bus 804. Input / output (I / O) interface 805 is also connected to bus 804.

[0143] Multiple components in device 800 are connected to I / O interface 805, including: input unit 806, such as keyboard, mouse, etc.; output unit 807, such as various types of monitors, speakers, etc.; storage unit 808, such as disk, optical disk, etc.; and communication unit 809, such as network card, modem, wireless transceiver, etc. Communication unit 809 allows device 800 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0144] The computing unit 801 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the computing unit 801 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The computing unit 801 performs the various methods and processes described above, such as method 100. For example, in some embodiments, method 100 may be implemented as a computer software program tangibly contained in a machine-readable medium, such as storage unit 808. In some embodiments, part or all of the computer program may be loaded and / or installed on device 800 via ROM 802 and / or communication unit 809. When the computer program is loaded into RAM 803 and executed by the computing unit 801, one or more steps of method 100 described above may be performed. Alternatively, in other embodiments, the computing unit 801 may be configured to perform method 100 by any other suitable means (e.g., by means of firmware).

[0145] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0146] The program code used to implement the methods of this disclosure may be written in any combination of one or more programming languages. This program code may be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may be executed entirely on a machine, partially on a machine, as a standalone software package partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0147] In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0148] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device for displaying information to the user (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor); and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the computer. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0149] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as a data server), or computing systems that include middleware components (e.g., an application server), or computing systems that include frontend components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with embodiments of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., a communication network). Examples of communication networks include local area networks (LANs), wide area networks (WANs), and the Internet.

[0150] Computing systems can include clients and servers. Clients and servers are generally located far apart and typically interact via communication networks. Client-server relationships are created by computer programs running on the respective computers and having a client-server relationship with each other. Servers can be cloud servers, servers in distributed systems, or servers incorporating blockchain technology.

[0151] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0152] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A method for controlling the dosage of a defluorinating agent, characterized in that, include: The inlet monitoring parameters and outlet monitoring parameters of the defluorination device are obtained. Mine water flows into the defluorination device, and a defluorinating agent is added to remove fluoride ions from the mine water. The inlet monitoring parameters include: the inlet flow rate of the mine water, the inlet fluoride ion concentration, the inlet temperature of the mine water, and the inlet pH of the mine water. The outlet monitoring parameters include: the outlet fluoride ion concentration over a historical time period. Obtain the set value for the outlet fluoride ion concentration; The dosage of the defluorinating agent is calculated based on the import monitoring parameters, the export monitoring parameters, and the export fluoride ion concentration setpoint. The dosing device is controlled to add defluorinating agent to the defluorination device according to the dosage.

2. The method according to claim 1, characterized in that, The step of calculating the dosage of the defluorinating agent based on the inlet monitoring parameters, the outlet monitoring parameters, and the outlet fluoride ion concentration setpoint includes: The dosage of the defluorinating agent is calculated according to a preset defluorinating agent dosage formula, wherein the preset defluorinating agent dosage formula includes: M=Q×(C O − C ) × q × K1 + △ κ M is the dosage of the defluoridating agent, Q is the influent flow rate, and C is the concentration of the defluoridating agent. O The concentration of imported fluoride ions, C i The set value for the outlet fluoride ion concentration is given by q, where q is the standard value for the adsorption capacity of the defluorinating agent, K1 is the adsorption capacity calibration coefficient, and Δκ is the compensation amount of the defluorinating agent.

3. The method according to claim 2, characterized in that, The amount of defluorinating agent compensation is related to the outlet fluoride ion concentration during the historical time period and the set value of the outlet fluoride ion concentration; The adsorption capacity calibration coefficient is related to the inlet water temperature and pH, where pH is the acidity or alkalinity of the inlet water.

4. The method according to claim 1, characterized in that, The method further includes: Obtain the turbidity setpoint for the outlet water; The step of calculating the dosage of the defluorinating agent based on the inlet monitoring parameters, the outlet monitoring parameters, and the outlet fluoride ion concentration setpoint includes: The dosage of the defluoridating agent is calculated based on the inlet monitoring parameters, the outlet monitoring parameters, the outlet water turbidity setpoint, and the outlet fluoride ion concentration setpoint.

5. The method according to claim 1, characterized in that, The defluorination device includes a mixing reactor and a solid-liquid separator connected to the mixing reactor. The mixing reactor is used to mix the mine water and the defluorinating agent, and the resulting sludge is conveyed to the solid-liquid separator, which separates the solids and liquids in the sludge. The method further includes: Monitor the current sludge level in the solid-liquid separator; Compare the current mud level with the preset upper limit mud level and the preset lower limit mud level; If the current mud level is greater than the preset upper limit of mud level, the solid-liquid separator is activated to discharge the solid and the liquid. If the current mud level is less than the preset lower limit of mud level, then the solid-liquid separator is controlled to stop discharging the solid and the liquid.

6. The method according to claim 1, characterized in that, The set value for the outlet fluoride ion concentration includes a first set value for the outlet fluoride ion concentration and a second set value for the outlet fluoride ion concentration, wherein the first set value for the outlet fluoride ion concentration is greater than the second set value for the outlet fluoride ion concentration; The step of calculating the dosage of the defluorinating agent based on the inlet monitoring parameters, the outlet monitoring parameters, and the outlet fluoride ion concentration setpoint includes: The dosage of the defluorinating agent is calculated based on the import monitoring parameters, the export monitoring parameters, and the first set value of the export fluoride ion concentration. After the dosing device adds defluorinating agent to the defluorination device according to the dosing amount, the outlet fluoride ion concentration is monitored for the current time period. If the outlet fluoride ion concentration is less than the second set value of the outlet fluoride ion concentration during the current time period, the dosage of the defluorinating agent is calculated based on the inlet monitoring parameters, the outlet monitoring parameters, and the second set value of the outlet fluoride ion concentration.

7. The method according to any one of claims 1 to 6, characterized in that, The dosage of the defluorinating agent includes the dosage of the defluorinating agent for the current time period; The method further includes: The total amount of defluoridating agent is calculated based on the influent flow rate, the inlet fluoride ion concentration, and the outlet fluoride ion concentration set values.

8. A defluorinating agent dosage control device, characterized in that, include: The first acquisition module is used to acquire inlet monitoring parameters and outlet monitoring parameters of the defluorination device. The defluorination device contains mine water and a defluorinating agent, which removes fluoride ions from the mine water. The inlet monitoring parameters include: the inlet flow rate of the mine water, the inlet fluoride ion concentration, the inlet temperature of the mine water, and the inlet pH of the mine water. The outlet monitoring parameters include: the outlet fluoride ion concentration over a historical time period. The second acquisition module is used to acquire the set value of the outlet fluoride ion concentration. The calculation module is used to calculate the dosage of the defluorinating agent based on the inlet monitoring parameters, the outlet monitoring parameters, and the outlet fluoride ion concentration setpoint. An addition module is used to control the dosing device to add defluorinating agent to the defluorination device according to the dosing amount.

9. An electronic device, characterized in that, include: At least one processor; as well as A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-7.

10. A non-transitory computer-readable storage medium storing computer instructions, characterized in that, The computer instructions are used to cause the computer to perform the method according to any one of claims 1-7.

Images