Automatic sulfuric acid adjusting system for beneficiation wastewater treatment and control method

Abstract

The invention discloses an automatic sulfuric acid adjusting system for beneficiation wastewater treatment and a control method, and relates to the technical field of beneficiation wastewater treatment.The automatic sulfuric acid adjusting system for beneficiation wastewater treatment comprises an outer drainage pool, a pipe network assembly, a measuring assembly, a stirring assembly and a controller. In the using process, the controller obtains the reserve amount of the dilute sulfuric acid, when the reserve amount of the dilute sulfuric acid is insufficient, the acid preparation process is called to execute the acid preparation process, when the reserve amount of the dilute sulfuric acid is sufficient and the PH of the discharged water needs to be adjusted, the PH adjustment process executes the PH adjustment process, the whole process does not need to make contact with the sulfuric acid, and the personal safety of production personnel is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of mineral processing wastewater treatment, and in particular to an automatic sulfuric acid regulating system and control method for mineral processing wastewater treatment. Background Art

[0002] In the process requirements of modern industry, the reuse rate of water is a very important indicator and an inevitable requirement for the protection of water resources. Lead and zinc will produce a large amount of wastewater in the process of mineral processing. The composition of these wastewaters is complex. In addition to heavy metal ions (such as Pb and Zn), there are also a large amount of ore suspension and flotation reagents. If it is discharged directly without treatment, it will cause damage to the ecological environment system and directly affect the normal life of human beings. As a typical industrial wastewater, mineral processing wastewater can be reused after effective treatment to achieve zero discharge, which has huge economic and environmental benefits for enterprises and society.

[0003] Among them, the mineral processing wastewater is collected into the external drainage pool after treatment. The pH value of the external drainage is an important indicator to measure the effect of mineral processing wastewater treatment. By adding a sulfuric acid addition system to the tailings pond external drainage deep treatment system, sulfuric acid is added to the tailings pond to adjust the pH value of the mineral processing wastewater, so that the pH value of the external drainage meets the process requirements of mineral processing wastewater treatment. However, the storage and use of sulfuric acid has a high safety risk. In order to protect the life safety of production personnel, operators must be prevented from contacting sulfuric acid.

[0004] Therefore, the present application proposes an automatic sulfuric acid adjustment system and control method for mineral processing wastewater treatment, which can prevent operators from contacting sulfuric acid, automatically complete the preparation process of dilute sulfuric acid, and automatically inject dilute sulfuric acid when the pH value of external drainage needs to be adjusted, so that the pH value of the external drainage meets the process requirements of mineral processing wastewater treatment. Summary of the invention

[0005] The main purpose of the present application is to provide an automatic regulation system and control method for sulfuric acid for mineral processing wastewater treatment, aiming to solve the technical problem of preventing workers from contacting concentrated sulfuric acid during the storage and use of sulfuric acid in mineral processing wastewater treatment.

[0006] To achieve the above objectives, this application provides the following technical solutions:

[0007] An automatic sulfuric acid regulating system for treating ore dressing wastewater, comprising:

[0008] External drainage pool for collecting treated ore dressing wastewater;

[0009] The pipe network component includes a dilution box, a water reservoir and a sulfuric acid tank, wherein the input end of the dilution box is respectively connected to the output ends of a first conduit and a second conduit, the input end of the first conduit is arranged in the water reservoir and connected to the output end of a pump body, and the input end of the second conduit is connected to the output end of the sulfuric acid tank; the output end of the dilution box is connected to the input end of a third conduit, and the output end of the third conduit is arranged in the external drainage tank.

[0010] A measuring assembly, comprising a first liquid level detector disposed in the outer drainage tank, and a pH value detector disposed in the dilution tank;

[0011] A stirring assembly, disposed on the dilution tank and used for stirring the liquid in the dilution tank;

[0012] The controller is used to selectively control the on / off of the first conduit, the second conduit and the third conduit, receive signals from the first liquid level detector and the pH value detector, and control whether the pump body and the stirring mechanism work.

[0013] As a further improvement of the present application, the pipe network assembly also includes a first pipeline valve and a first solenoid valve arranged on the first conduit, a second pipeline valve and a second solenoid valve arranged on the second conduit, and a third pipeline valve and a third solenoid valve arranged on the third conduit. The first pipeline valve, the second pipeline valve and the third pipeline valve are respectively used to manually control the on / off of the first conduit, the second conduit and the third conduit. The first solenoid valve, the second solenoid valve and the third solenoid valve are all electrically connected to the controller to electrically control the on / off of the first conduit, the second conduit and the third conduit, respectively.

[0014] As a further improvement of the present application, the pipe network component also includes a first electromagnetic flowmeter arranged at the output end of the first conduit, a second electromagnetic flowmeter arranged at the output end of the second conduit, and a third electromagnetic flowmeter arranged at the output end of the third conduit. The first electromagnetic flowmeter, the second electromagnetic flowmeter and the third electromagnetic flowmeter are all electrically connected to the controller to respectively record the amount of liquid output by the first conduit, the second conduit and the third conduit.

[0015] As a further improvement of the present application, the measuring component also includes a second liquid level detector arranged in the sulfuric acid tank, a first hydrogen sulfide gas monitor arranged near the dilute sulfuric acid tank, a second hydrogen sulfide gas monitor arranged near the dilution box, and a third hydrogen sulfide gas monitor arranged near the external drainage pool. The second liquid level detector, the first hydrogen sulfide gas monitor, the second hydrogen sulfide gas monitor and the third hydrogen sulfide gas monitor are all electrically connected to the controller to measure the liquid level in the sulfuric acid tank, and respectively detect the hydrogen sulfide gas content near the sulfuric acid tank, the dilution box and the external drainage pool.

[0016] As a further improvement of the present application, the stirring assembly includes a stirring motor arranged on the top outside the dilution box, the rotating shaft of the stirring motor is coaxially connected to one end of a stirring rod, the other end of the stirring rod extends through the dilute sulfuric acid tank and is connected to a stirring blade, the stirring motor is electrically connected to the controller, and the motor is controlled to do work to drive the stirring rod and the stirring blade to rotate around the axis of the stirring rod.

[0017] As a further improvement of the present application, the pipe network assembly also includes a filter arranged on the second conduit, and the filter is used to remove particulate matter in the liquid to ensure the quality of sulfuric acid and the continuity of production.

[0018] As a further improvement of the present application, the automatic regulation system for sulfuric acid for treating mineral processing wastewater also includes a human-computer interaction device so that the staff can input operation instructions to the automatic sulfuric acid addition system and provide feedback information to the staff.

[0019] A control method for an automatic sulfuric acid regulating system for treating ore dressing wastewater is applied to the automatic sulfuric acid regulating system for treating ore dressing wastewater. Specifically, the control method comprises the following steps:

[0020] Obtaining a liquid level value measured by a first liquid level detector;

[0021] comparing the liquid level value with a first preset threshold value interval;

[0022] When the liquid level value is less than or equal to the minimum value of the first preset threshold value interval, calling the acid preparation process to execute the acid preparation process;

[0023] When the liquid level value is greater than the minimum value of the first preset threshold interval, obtaining the pH value detected by the pH value detector and comparing it with the second preset threshold interval;

[0024] When the PH value is greater than or equal to the maximum value of the second preset threshold value interval, the PH adjustment process is called to execute the PH adjustment process.

[0025] As a further improvement of the present application, the acid preparation process comprises the following steps:

[0026] Controlling the first solenoid valve to open, and controlling the pump body to work after a first preset period of time;

[0027] When the liquid level value is greater than the maximum value of the first preset threshold interval, the first solenoid valve is first controlled to close, and the first flow value recorded by the first electromagnetic flowmeter during the period from the opening to the closing of the first solenoid valve is obtained, and then the pump body is controlled to stop working after the first preset period of time, and finally the stirring motor is controlled to stop working after the first preset period of time;

[0028] When the stirring motor starts to work for a first preset period of time, the second electromagnetic valve is controlled to open, and a second flow value of the second electromagnetic flow record is obtained;

[0029] When the ratio of the second flow value to the first flow value is a preset ratio, the second solenoid valve is first controlled to close, and then the stirring motor is controlled to stop working after a preset period of time.

[0030] As a further improvement of the present application, the pH adjustment process comprises the following steps:

[0031] Controlling the second stirring motor to start, and controlling the first solenoid valve to open after a second preset period of time;

[0032] When the pH value is less than or equal to the minimum value of the second preset threshold interval, or the liquid level value is less than or equal to the minimum value of the first preset threshold interval, the first solenoid valve is controlled to close, and the stirring motor is controlled to stop working after a first preset time period.

[0033] As a further improvement of the present application, the maximum value of the first preset threshold interval is the anti-overflow liquid level of the dilution tank, and the minimum value of the first preset threshold interval is the minimum safe liquid level of the dilution tank; the maximum value of the second preset threshold interval is 8.5, and the minimum value of the second preset threshold interval is 8.2; the first preset time period is 5s, and the second preset time period is 60s.

[0034] As a further improvement of the present application, the preset ratio is the ratio of concentrated sulfuric acid to water, which is 1:100.

[0035] The technical solution provided by this application may have the following beneficial effects:

[0036] During use of the present application, the first liquid level detector obtains the actual liquid level in the dilution tank, and the pH value detector obtains the pH value of the external drainage; when the dilute sulfuric acid in the dilution tank is insufficient, the stirring mechanism is first controlled to continue to work, and then the first solenoid valve is controlled to open and the pump body is controlled to work, and a certain amount of clean water is injected into the dilution tank, and then the first solenoid valve and the pump body are closed, and then the second solenoid valve is controlled to open, and a certain amount of concentrated sulfuric acid is injected into the dilution tank, and then the second solenoid valve is closed, and finally the stirring component is controlled to stop working, so as to complete the acid preparation process of dilute sulfuric acid; when the dilute sulfuric acid is sufficient in the dilution, and the pH value of the external drainage needs to be adjusted, the third solenoid valve is controlled to open, and a certain amount of dilute sulfuric acid is injected into the external drainage pool, and the third solenoid valve is controlled to close when the pH value of the external drainage reaches the standard, so as to complete the pH adjustment process. Both the dilute sulfuric acid preparation and the pH adjustment process do not require contact by the operator, which ensures the life safety of the production personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. It is obvious that the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 It is a schematic diagram of the process of an automatic sulfuric acid regulating system for treating ore dressing wastewater;

[0039] Figure 2 This is the connection diagram of the controller;

[0040] Figure 3 An operation flow chart of an automatic sulfuric acid regulating system for treating ore dressing wastewater;

[0041] Reference numerals:

[0042] 1. External drainage pool; 2. Pipe network components; 201. Dilution tank; 202. Water reservoir; 203. Sulfuric acid tank; 204. First conduit; 205. Second conduit; 206. Third conduit; 207. Pump body; 208. First pipeline valve; 209. First solenoid valve; 210. Second pipeline valve; 211. Second solenoid valve; 212. Third pipeline valve; 213. Third solenoid valve; 214. First electromagnetic flowmeter; 215. Second electromagnetic flowmeter ; 216, third electromagnetic flowmeter; 217, filter; 3, measuring component; 301, first liquid level detector; 302, pH value detector; 303, second liquid level detector; 304, first hydrogen sulfide gas monitor; 305, second hydrogen sulfide gas monitor; 306, third hydrogen sulfide gas monitor; 4, stirring component; 401, stirring motor; 402, stirring rod; 403, stirring blade; 5, controller; 6, human-computer interaction device; DETAILED DESCRIPTION

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0048] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

[0049] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0050] Example 1

[0051] Figure 1 and Figure 2 An embodiment of the automatic sulfuric acid regulating system for treating mineral processing wastewater of the present application is shown, see Figure 1 and Figure 2 In this embodiment, the automatic regulation system and control method of sulfuric acid for treating mineral processing wastewater include: an external drainage pool 1, a pipe network component 2, a measuring component 3, a stirring component 4 and a controller 5.

[0052] Among them, see Figure 1 and Figure 2The external drainage pool 1 is used to collect the treated mineral processing wastewater (ie, external drainage). The pipe network component 2 includes a dilution box 201, a water reservoir 202, a sulfuric acid tank 203, a first conduit 204, a second conduit 205, a third conduit 206 and a pump body 207; the input end of the dilution box 201 is connected to the output ends of the first conduit 204 and the second conduit 205 respectively, the input end of the first conduit 204 is arranged in the water reservoir 202 and connected to the output end of the pump body 207, the input end of the second conduit 205 is connected to the output end of the sulfuric acid tank 203, the output end of the third conduit 206 is arranged in the external drainage pool 1, the sulfuric acid tank 203 is provided with concentrated sulfuric acid, the water reservoir 202 is provided with clean water, the clean water is transported to the dilution box 201 through the first conduit 204 and the pump body 207, the concentrated sulfuric acid is transported to the dilution box 201 through the second conduit 205, the two are mixed to dilute the concentrated sulfuric acid into dilute sulfuric acid, the dilute sulfuric acid is transported to the external drainage pool 1 through the third conduit 206, the dilute sulfuric acid and the external drainage are mixed to adjust the pH value of the external drainage so that the external drainage meets the treatment standard of mineral processing wastewater. The measuring component 3 includes a first liquid level detector 301 and a pH value detector 302PH in the dilution tank 201. The actual liquid level of the dilute sulfuric acid tank 203 is measured by the first liquid level detector 301 so as to replenish the dilute sulfuric acid when the dilute sulfuric acid is insufficient. The pH value of the external drainage is measured by the pH value detector 302PH so as to add dilute sulfuric acid to adjust the pH value of the external drainage when the pH value is high. The stirring component 4 is arranged on the dilution tank 201 and is used to stir the liquid in the dilution tank 201; the controller 5 is used to select the on / off of the first conduit 204, the second conduit 205 and the third conduit 206 so as to automatically complete the acid preparation and pH adjustment process according to the demand; the controller 5 is electrically connected to the first liquid level detector 301 and the pH value detector 302PH respectively, and receives the signals sent by the first liquid level detector 301 and the pH value detector 302PH so as to select the process according to the actual situation; the controller 5 is electrically connected to the pump body 207 and the stirring mechanism respectively to control whether the pump body 207 and the stirring mechanism do work or not.

[0053] Further, see Figure 1 and Figure 2 The pipe network component 2 also includes: a first pipe valve 208, a first solenoid valve 209, a second pipe valve 210, a second solenoid valve 211, a third pipe valve 212 and a third solenoid valve 213. The first pipe valve 208, the second pipe valve 210 and the third pipe valve 212 are respectively arranged on the first conduit 204, the second conduit 205 and the third conduit 206 to manually control the on / off of the first conduit 204, the second conduit 205 and the third conduit 206 respectively; the first solenoid valve 209, the second solenoid valve 211 and the third solenoid valve 213 are respectively arranged on the first conduit 204, the second conduit 205 and the third conduit 206, and are all electrically connected to the controller 5 to electrically control the on / off of the first conduit 204, the second conduit 205 and the third conduit 206 respectively.

[0054] It should be noted that the first pipeline valve 208, the first solenoid valve 209, the second pipeline valve 210, the second solenoid valve 211, the third pipeline valve 212 and the third solenoid valve 213 are all in a closed state initially; when the sulfuric acid automatic regulating system is in use, the first pipeline valve 208, the second pipeline valve 210 and the third pipeline valve 212 are all in an open state, and the first solenoid valve 209, the second solenoid valve 211 and the third solenoid valve 213 are all in a closed state.

[0055] Further, see Figure 1 and Figure 2 The pipe network component 2 also includes: a first electromagnetic flowmeter 214, a second electromagnetic flowmeter 215 and a third electromagnetic flowmeter 216, which are respectively arranged at the output ends of the first conduit 204, the second conduit 205 and the third conduit 206, and are all electrically connected to the controller 5 to respectively record the amount of liquid output by the first conduit 204, the second conduit 205 and the third conduit 206, specifically the water and concentrated sulfuric acid injected into the dilution tank 201, and the dilute sulfuric acid injected into the external drainage pool 1.

[0056] Further, see Figure 1 The pipe network component 2 also includes a filter 217 disposed on the second conduit 205, and the filter 217 is used to remove particulate matter in the liquid to ensure the quality of sulfuric acid and the continuity of production.

[0057] Optionally, the first conduit 204 is an N50 stainless steel pipe, the second conduit 205 is a DN25 stainless steel pipe, and the third conduit 206 is a DN50 stainless steel pipe.

[0058] Further, see Figure 1 and Figure 2 The measuring component 3 further includes: a second liquid level detector 303, a first hydrogen sulfide gas monitor 304, a second hydrogen sulfide gas monitor 305 and a third hydrogen sulfide gas monitor 306, the second liquid level detector 303, the first hydrogen sulfide gas monitor 304, the second hydrogen sulfide gas monitor 305 and the third hydrogen sulfide gas monitor 306 are all electrically connected to the controller 5; the second liquid level detector 303 is arranged in the sulfuric acid tank 203, and is used to measure the liquid level of concentrated sulfuric acid in the sulfuric acid tank 203, So that it can be replenished when concentrated sulfuric acid is insufficient; the first hydrogen sulfide gas monitor 304, the second hydrogen sulfide gas monitor 305 and the third hydrogen sulfide gas monitor 306 are respectively arranged near the sulfuric acid tank 203, the dilution box 201 and the external drainage pool 1, and are used to respectively detect the hydrogen sulfide gas content near the sulfuric acid tank 203, the dilution box 201 and the external drainage pool 1. By monitoring the hydrogen sulfide gas content, it can be determined whether the space near the sulfuric acid tank 203, the dilution box 201 and the external drainage pool 1 is safe.

[0059] Optionally, the sulfuric acid tank 203 is provided with a minimum safe liquid level and a maximum safe liquid level. By comparing the value detected by the second liquid level detector 303 with the safe liquid level range of the sulfuric acid tank 203, the alarm device can be used to send out an alarm signal and stop the operation of the sulfuric acid automatic adjustment system when the amount of concentrated sulfuric acid is insufficient or exceeds the standard.

[0060] Optionally, a safety threshold is set for the hydrogen sulfide gas content. By comparing the values ​​detected by the first hydrogen sulfide gas monitor 304, the second hydrogen sulfide gas monitor 305 and the third hydrogen sulfide gas monitor 306 with the safety threshold, the alarm device can be used to send out an alarm signal and stop the operation of the sulfuric acid automatic adjustment system when the hydrogen sulfide gas content exceeds the standard.

[0061] Further, see Figure 1 and Figure 2 The stirring assembly 4 includes: a stirring motor 401, a stirring rod 402 and a stirring blade 403. The stirring motor 401 is electrically connected to the controller 5 and is arranged at the top of the dilution box 201 to select whether the stirring motor 401 does work or not through the controller 5; the rotating shaft of the stirring motor 401 is coaxially connected to one end of a stirring rod 402, and the other end of the stirring rod 402 penetrates into the dilution box 201 and is connected to at least one stirring blade 403. When the stirring motor 401 does work, the stirring rod 402 and each stirring blade 403 rotate around the axis of the rotating shaft of the stirring motor 401, thereby stirring the liquid in the dilution box 201. Considering the uniform distribution of the acid solution, accelerated reaction and process safety, it is necessary to add a stirring link in the acid preparation and pH adjustment process.

[0062] Furthermore, the controller 5 pre-stores a number of control instructions, and the controller 5 matches the corresponding control instructions to analyze and calculate the signals emitted by the first liquid level detector 301, the pH value detector 302PH, the first electromagnetic flowmeter 214, the second electromagnetic flowmeter 215, the third electromagnetic flowmeter 216, the first hydrogen sulfide gas monitor 304, the second hydrogen sulfide gas monitor 305, the third hydrogen sulfide gas monitor 306 and the second liquid level detector 303, and matches the corresponding control instructions to execute the next process; the controller 5 matches the corresponding control instructions to control the opening / closing of the first solenoid valve 209, the second solenoid valve 211 and the third solenoid valve 213, so as to realize the intelligent control of the on / off of each conduit; and matches the corresponding control instructions to control the pump body 207 and the stirring motor 401 to do work.

[0063] It should be noted that this embodiment focuses on the working principle of the controller 5. The specific structure of the controller 5 is not the focus of this embodiment and is a prior art. This embodiment will not repeat the specific structure of the controller 5.

[0064] Similarly, the present embodiment focuses on the working principles of the first liquid level detector 301, the pH value detector 302PH, the pump body 207, the first solenoid valve 209, the second solenoid valve 211, the third solenoid valve 213, the first electromagnetic flowmeter 214, the second electromagnetic flowmeter 215, the third electromagnetic flowmeter 216, the second liquid level detector 303, the first hydrogen sulfide gas monitor 304, the second hydrogen sulfide gas monitor 305, the third hydrogen sulfide gas monitor 306 and the stirring motor 401. The specific structures of the first liquid level detector 301, the pH value detector 302PH, the pump body 207, the first electromagnetic valve 209, the second electromagnetic valve 211, the third electromagnetic valve 213, the first electromagnetic flowmeter 214, the second electromagnetic flowmeter 215, the third electromagnetic flowmeter 216, the second liquid level detector 303, the first hydrogen sulfide gas monitor 304, the second hydrogen sulfide gas monitor 305, the third hydrogen sulfide gas monitor 306 and the stirring motor 401 are not the focus of this embodiment and are Prior art, this embodiment and the accompanying drawings have shown the installation of the first liquid level detector 301, the pH value detector 302PH, the pump body 207, the first electromagnetic valve 209, the second electromagnetic valve 211, the third electromagnetic valve 213, the first electromagnetic flowmeter 214, the second electromagnetic flowmeter 215, the third electromagnetic flowmeter 216, the second liquid level detector 303, the first hydrogen sulfide gas monitor 304, the second hydrogen sulfide gas monitor 305, the third hydrogen sulfide gas monitor 306 and the stirring motor 401 Area or position, the specific structures of the first liquid level detector 301, the pH value detector 302PH, the pump body 207, the first solenoid valve 209, the second solenoid valve 211, the third solenoid valve 213, the first electromagnetic flowmeter 214, the second electromagnetic flowmeter 215, the third electromagnetic flowmeter 216, the second liquid level detector 303, the first hydrogen sulfide gas monitor 304, the second hydrogen sulfide gas monitor 305, the third hydrogen sulfide gas monitor 306 and the stirring motor 401 are no longer described.

[0065] Further, see Figure 2 The automatic regulating system for sulfuric acid used for mineral processing wastewater treatment also includes a human-computer interaction device 6, so that the staff can input operation instructions to the automatic sulfuric acid addition system and feedback information to the staff.

[0066] Optionally, the human-computer interaction device 6 is provided with a touch screen, which can display information such as an operation interface to the staff, and the staff can complete command selection or input on the touch screen.

[0067] It should be noted that this embodiment focuses on the working principle of the human-computer interaction device 6. The specific structure of the human-computer interaction device 6 is not the focus of this embodiment and is prior art. This embodiment will not repeat the specific structure of the human-computer interaction device 6.

[0068] In this embodiment, the first liquid level detector 301 obtains the actual liquid level in the dilution tank 201, and the pH detector 302PH obtains the pH value of the external drainage; when the dilute sulfuric acid in the dilution tank 201 is insufficient, the stirring mechanism is first controlled to continue to work, and then the first solenoid valve 209 is controlled to open and the pump body 207 is controlled to work, and a certain amount of clean water is injected into the dilution tank 201, and then the first solenoid valve 209 and the pump body 207 are closed, and then the second solenoid valve 211 is controlled to open, and a certain amount of concentrated sulfuric acid is injected into the dilution tank 201, and then the second solenoid valve 211 is closed, and finally the stirring component 4 is controlled to stop working, so as to complete the acid preparation process of dilute sulfuric acid; when the dilute sulfuric acid is sufficient in the dilution, and the pH value of the external drainage needs to be adjusted, the third solenoid valve 213 is controlled to open, and a certain amount of dilute sulfuric acid is injected into the external drainage pool 1, and the third solenoid valve 213 is controlled to be closed when the pH value of the external drainage reaches the standard, so as to complete the pH adjustment process. The dilute sulfuric acid preparation and pH adjustment process do not require the operator to contact, which ensures the life safety of the production personnel.

[0069] Example 2

[0070] In order to realize the automatic control of the sulfuric acid automatic regulating system for mineral processing wastewater treatment, based on the above embodiment, see Figure 2 This embodiment provides a control method for an automatic sulfuric acid regulating system for treating mineral processing wastewater. Figure 2 , the control method comprises the following steps:

[0071] Step S1: obtaining the liquid level value measured by the first liquid level detector 301;

[0072] Step S2: comparing the liquid level value with a first preset threshold value interval;

[0073] Step S3: when the liquid level value is less than or equal to the minimum value of the first preset threshold value interval, calling the acid preparation process to execute the acid preparation process;

[0074] Step S4: when the liquid level value is greater than the minimum value of the first preset threshold interval, the pH value detected by the pH value detector 302 is obtained and compared with the second preset threshold interval;

[0075] Step S5: When the PH value is greater than or equal to the maximum value of the second preset threshold value interval, the PH adjustment process is called to execute the PH adjustment process.

[0076] Among them, see Figure 2 The acid preparation process includes the following steps:

[0077] Step S31: Control the first solenoid valve 209 to open, and control the pump body 207 to work after a first preset period of time;

[0078] Step S32: when the liquid level value detected by the first liquid level detector 301 is greater than the maximum value of the first preset threshold interval, the first electromagnetic valve 209 is first controlled to be closed, and the first flow value recorded by the first electromagnetic flowmeter 214 during the period from the opening to the closing of the first electromagnetic valve 209 is obtained, and then the pump body 207 is controlled to stop working after the first preset period of time; finally, the stirring motor 401 is controlled to stop working after the first preset period of time;

[0079] Step S33: after the stirring motor 401 starts to work for a first preset period of time, the second electromagnetic valve 211 is controlled to open, and a second flow value of the second electromagnetic flow record is obtained;

[0080] Step S34: when the ratio of the second flow value to the first flow value is a preset ratio, the second solenoid valve 211 is first controlled to close, and then the stirring motor 401 is controlled to stop working after a preset period of time.

[0081] Among them, see Figure 2 , the pH adjustment process includes the following steps:

[0082] Step S51: controlling the second stirring motor 401 to start, and controlling the first solenoid valve 209 to open after a second preset period of time;

[0083] Step S52: When the pH value is less than or equal to the minimum value of the second preset threshold interval, or the liquid level value is less than or equal to the minimum value of the first preset threshold interval, the first solenoid valve 209 is controlled to close, and the stirring motor 401 is controlled to stop working after a first preset period of time.

[0084] Furthermore, the maximum value of the first preset threshold interval is, and the minimum value of the first preset threshold interval is the lowest safe liquid level of the dilution tank 201.

[0085] Furthermore, the maximum value of the second preset threshold interval is 8.5, and the minimum value of the second preset threshold interval is 8.2. In combination with environmental protection requirements, the pH value of this type of water quality is stipulated to be: 8.2~8.5.

[0086] Furthermore, the first preset period is 5 seconds to ensure that each electromagnetic valve is closed in place; the second preset period is 60 seconds, which is the shutdown delay stop time of the stirring component 4, so that the configuration is more sufficient.

[0087] Furthermore, the preset ratio is 1:100, which is the ratio of concentrated sulfuric acid to water in the acid preparation process. The amount of clean water injected for dilution can be recorded by the first electromagnetic flowmeter 214. The program run by the controller 5 calculates the relationship between the clean water and the preset ratio to obtain the amount of concentrated sulfuric acid to be injected into the dilution tank 201, and records it through the second electromagnetic flowmeter 215, so as to control the closing of the second solenoid valve 211 when the amount of concentrated sulfuric acid reaches the required amount.

[0088] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the present application; the dimensions of the drawings are not related to the specific objects, and the dimensions of the objects can be changed arbitrarily.

Claims

1. A sulfuric acid automatic regulating system for treating mineral processing wastewater, characterized in that: include: External drainage pool for collecting treated ore dressing wastewater; The pipe network component includes a dilution box, a water reservoir and a sulfuric acid tank, wherein the input end of the dilution box is respectively connected to the output ends of a first conduit and a second conduit, the input end of the first conduit is arranged in the water reservoir and connected to the output end of a pump body, and the input end of the second conduit is connected to the output end of the sulfuric acid tank; the output end of the dilution box is connected to the input end of a third conduit, and the output end of the third conduit is arranged in the external drainage tank. A measuring assembly, comprising a first liquid level detector disposed in the outer drainage tank, and a pH value detector disposed in the dilution tank; A stirring assembly, disposed on the dilution tank and used for stirring the liquid in the dilution tank; The controller is used to selectively control the on / off of the first conduit, the second conduit and the third conduit, receive signals from the first liquid level detector and the pH value detector, and control whether the pump body and the stirring mechanism work.

2. The automatic sulfuric acid regulating system for treating ore dressing wastewater according to claim 1, characterized in that: The pipe network assembly further includes a first pipe valve and a first solenoid valve provided on the first conduit, a second pipe valve and a second solenoid valve provided on the second conduit, and a third pipe valve and a third solenoid valve provided on the third conduit. The first pipe valve, the second pipe valve and the third pipe valve are respectively used to manually control the on / off of the first conduit, the second conduit and the third conduit. The first solenoid valve, the second solenoid valve and the third solenoid valve are all electrically connected to the controller to electrically control the on / off of the first conduit, the second conduit and the third conduit.

3. The automatic sulfuric acid regulating system for treating ore dressing wastewater according to claim 2, characterized in that: The pipe network component also includes a first electromagnetic flowmeter arranged at the output end of the first conduit, a second electromagnetic flowmeter arranged at the output end of the second conduit, and a third electromagnetic flowmeter arranged at the output end of the third conduit. The first electromagnetic flowmeter, the second electromagnetic flowmeter and the third electromagnetic flowmeter are all electrically connected to the controller to respectively record the amount of liquid output by the first conduit, the second conduit and the third conduit.

4. The automatic sulfuric acid regulating system for treating ore dressing wastewater according to claim 3 is characterized in that: The measuring component also includes a second liquid level detector arranged in the sulfuric acid tank, a first hydrogen sulfide gas monitor arranged near the dilute sulfuric acid tank, a second hydrogen sulfide gas monitor arranged near the dilution box, and a third hydrogen sulfide gas monitor arranged near the external drainage pool. The second liquid level detector, the first hydrogen sulfide gas monitor, the second hydrogen sulfide gas monitor and the third hydrogen sulfide gas monitor are all electrically connected to the controller to measure the liquid level in the sulfuric acid tank, and respectively detect the hydrogen sulfide gas content near the sulfuric acid tank, the dilution box and the external drainage pool.

5. The automatic sulfuric acid regulating system for treating ore dressing wastewater according to claim 4, characterized in that: The stirring assembly includes a stirring motor arranged at the top outside the dilution box, the rotating shaft of the stirring motor is coaxially connected to one end of a stirring rod, the other end of the stirring rod penetrates into the dilute sulfuric acid tank and is connected to a stirring blade, the stirring motor is electrically connected to the controller, and the motor is controlled to do work to drive the stirring rod and the stirring blade to rotate around the axis of the stirring rod.

6. A control method for an automatic sulfuric acid regulating system for treating ore dressing wastewater, applied to the automatic sulfuric acid regulating system for treating ore dressing wastewater according to any one of claims 1 to 5, characterized in that: The control method comprises the following steps: Obtaining a liquid level value measured by a first liquid level detector; comparing the liquid level value with a first preset threshold value interval; When the liquid level value is less than or equal to the minimum value of the first preset threshold value interval, calling the acid preparation process to execute the acid preparation process; When the liquid level value is greater than the minimum value of the first preset threshold interval, obtaining the pH value detected by the pH value detector and comparing it with the second preset threshold interval; When the PH value is greater than or equal to the maximum value of the second preset threshold value interval, the PH adjustment process is called to execute the PH adjustment process.

7. The control method according to claim 6, characterized in that: The acid preparation process comprises the following steps: Controlling the first solenoid valve to open, and controlling the pump body to work after a first preset period of time; When the liquid level value is greater than the maximum value of the first preset threshold interval, the first solenoid valve is first controlled to close, and the first flow value recorded by the first electromagnetic flowmeter during the period from the opening to the closing of the first solenoid valve is obtained, and then the pump body is controlled to stop working after the first preset period of time, and finally the stirring motor is controlled to stop working after the first preset period of time; When the stirring motor starts to work for a first preset period of time, the second electromagnetic valve is controlled to open, and a second flow value of the second electromagnetic flow record is obtained; When the ratio of the second flow value to the first flow value is a preset ratio, the second solenoid valve is first controlled to close, and then the stirring motor is controlled to stop working after a preset period of time.

8. The control method according to claim 7, characterized in that: The pH adjustment process comprises the following steps: Controlling the second stirring motor to start, and controlling the first solenoid valve to open after a second preset period of time; When the pH value is less than or equal to the minimum value of the second preset threshold interval, or the liquid level value is less than or equal to the minimum value of the first preset threshold interval, the first solenoid valve is controlled to close, and the stirring motor is controlled to stop working after a first preset time period.

9. The control method according to claim 8, characterized in that: The maximum value of the first preset threshold interval is the anti-overflow liquid level of the dilution tank, and the minimum value of the first preset threshold interval is the minimum safe liquid level of the dilution tank; the maximum value of the second preset threshold interval is 8.5, and the minimum value of the second preset threshold interval is 8.2; the first preset time period is 5s, and the second preset time period is 60s.

10. The control method according to claim 8, characterized in that: The preset ratio is the ratio of concentrated sulfuric acid to water, which is 1:100.

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