An intelligent device for processing fluorine ions in Mxene material etching waste liquid

Abstract

The utility model discloses a kind of device for intelligently processing fluorine ion in Mxene material etching waste liquid, including reaction pool, detection pool, sedimentation tank and control system, the control system with the reaction pool, the detection pool, the sedimentation tank are electrically connected, the reaction pool is respectively connected with reagent storage tank and waste liquid storage tank, the reagent storage tank is located the top of the reaction pool, the reaction pool is located the top of the sedimentation tank, the bottom of the reagent storage tank is connected with the reaction pool by siphon, the lateral wall of the sedimentation tank is provided with liquid inlet pipe, the bottom of the reaction pool is connected with the liquid inlet pipe by inclined plane, the top of the sedimentation tank is provided with supernatant outlet, the bottom of the sedimentation tank is provided with sludge valve. The utility model uses above-mentioned one kind of device for intelligently processing fluorine ion in Mxene material etching waste liquid, realizes the integrated operation of concentration prediction, automatic accurate dosing, high-efficiency reaction, and the degree of automation is high.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a device for intelligently treating fluoride ions in Mxene material etching waste liquid. Background Technology

[0002] In industrial wastewater, fluorides mainly exist as fluoride ions (hydrofluoric acid, metal fluorides, non-metal fluorides, or organic fluorides, etc.). Generally, a defluorinating agent reacts chemically with the wastewater, converting the dissolved fluoride compounds into insoluble solids. Then, solid-liquid separation separates the insoluble solids from the solution, removing the fluoride ions originally present in the wastewater. Fluoride concentration is then monitored until it meets discharge standards.

[0003] In existing technologies, defluoridation agent storage tanks mix the agent (such as calcium chloride) with wastewater. The calcium ions in the agent combine with the fluoride ions in the wastewater, undergoing a chemical reaction that typically takes 30 minutes to produce a water-insoluble solid substance called calcium fluoride. However, to ensure the fluoride ions react fully, the agent dosage must be kept in excess during the reaction process; otherwise, incomplete precipitation may occur, or the reaction time may need to be extended to 1-2 hours to ensure complete precipitation. Utility Model Content

[0004] The purpose of this invention is to provide an intelligent device for treating fluoride ions in Mxene material etching waste liquid, which integrates concentration prediction, automatic and precise dosing, and efficient reaction, avoiding incomplete reaction or excessive waste caused by insufficient reagents, improving the treatment effect of fluoride ions in waste liquid, and achieving a high degree of automation.

[0005] To achieve the above objectives, this utility model provides an intelligent device for treating fluoride ions in etching waste liquid of Mxene material, including a reaction tank, a detection tank, a sedimentation tank, and a control system. The control system is electrically connected to the reaction tank, the detection tank, and the sedimentation tank. The reaction tank is connected to a reagent storage tank and a waste liquid storage tank, with the reagent storage tank located above the reaction tank and the reaction tank directly above the sedimentation tank. The bottom of the reagent storage tank is connected to the reaction tank via a siphon pipe. An inlet pipe is provided on the side wall of the sedimentation tank, and the bottom of the reaction tank is connected to the inlet pipe via an inclined surface. A supernatant outlet is provided at the top of the sedimentation tank, and a sludge discharge valve is provided at the bottom of the sedimentation tank.

[0006] Preferably, the waste liquid storage tank has a built-in first filter screen and an activated carbon adsorption layer. The waste liquid storage tank is connected to the reaction tank through a first water inlet solenoid valve. The waste liquid storage tank is connected to the detection tank through a diversion valve. The detection tank is connected to the reaction tank through a second water inlet solenoid valve.

[0007] Preferably, the detection cell contains a fluoride ion selective electrode, a reference electrode, and a liquid level sensor.

[0008] Preferably, the siphon tube is connected to a flow meter and a drug inlet solenoid valve.

[0009] Preferably, the sedimentation tank has a built-in second filter screen, which is located above the inlet of the liquid inlet pipe.

[0010] Preferably, the reaction tank has a built-in stirrer, and the side wall of the reaction tank is provided with a dosing port. The siphon pipe is connected to the dosing port through a one-way valve.

[0011] Therefore, the present invention employs the above-mentioned intelligent device for treating fluoride ions in Mxene material etching waste liquid, which has the following beneficial effects: This invention achieves integrated operation of concentration prediction, automatic and precise dosing, and efficient reaction, avoiding incomplete reaction or excessive waste caused by insufficient reagents, improving the treatment effect of fluoride ions in waste liquid, and has a high degree of automation.

[0012] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of an embodiment of a device for intelligently treating fluoride ions in etching waste liquid of Mxene material according to this utility model.

[0014] Figure Labels 1. Reaction tank; 2. Detection tank; 3. Sedimentation tank; 4. Control system; 5. Fluoride ion selective electrode; 6. Reference electrode; 7. Liquid level sensor; 8. Reagent storage tank; 9. Waste liquid storage tank; 10. Siphon pipe; 11. Flow meter; 12. Inlet solenoid valve; 13. Dosing port; 14. Check valve; 15. Stirrer; 16. Inlet pipe; 17. Inclined surface; 18. Second filter screen; 19. Supernatant outlet; 20. Sludge discharge valve; 21. First filter screen; 22. Activated carbon adsorption layer; 23. First inlet solenoid valve; 24. Diverter valve; 25. Second inlet solenoid valve. Detailed Implementation

[0015] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0016] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0017] Example 1 A device for intelligently treating fluoride ions in Mxene material etching waste liquid includes a reaction tank 1, a detection tank 2, a sedimentation tank 3, and a control system 4. The control system 4 is electrically connected to the reaction tank 1, the detection tank 2, and the sedimentation tank 3. The detection tank 2 contains a fluoride ion selective electrode 5, a reference electrode 6, and a liquid level sensor 7. The fluoride ion selective electrode 5 and the reference electrode 6 are immersed in the water sample to be tested, forming a galvanic cell. The electromotive force is linearly related to the logarithm of the fluoride ion activity; the concentration of fluoride ions in the water sample can be calculated by measuring the electromotive force. The reaction tank 1 is connected to a reagent storage tank 8 and a waste liquid storage tank 9. The bottom of the reagent storage tank 8 is connected to the reaction tank 1 via a siphon pipe 10, which is connected to a flow meter 11 and a solenoid valve 12 for inlet. The control system 4 includes a data acquisition instrument and a microcontroller (not shown in the figure). The data acquisition instrument transmits the data detected by the fluoride ion selective electrode 5 in the detection tank 2 to the microcontroller. At the same time, the liquid level sensor 7 transmits the detected wastewater volume in the detection tank 2 to the microcontroller to calculate the dosage and transmit the calculation result to the flow meter 11 and the inlet solenoid valve 12. The reagent (calcium chloride solution) is automatically added to the reaction tank 1 through the siphon principle. The control system 4 includes a power supply and is installed next to the device. It is connected to various electrical components (such as the stirrer 15, solenoid valve, and sensor) through signal lines. The overall structure is reasonably designed and operates automatically.

[0018] Specifically, the reagent storage tank 8 is located above the reaction tank 1 and can be connected to the etching waste liquid of Mxene material. The highest point of the siphon pipe 10 is 20-30cm lower than the liquid level in the reagent storage tank 8 to meet the siphon pressure requirements. A dosing port 13 is provided on the side wall of the reaction tank 1, and the siphon pipe 10 is connected to the dosing port 13 through a one-way valve 14 to prevent wastewater backflow. The reaction tank 1 has a built-in stirrer 15 to ensure that the calcium fluoride precipitation reaction is complete. The reaction tank 1 is located directly above the sedimentation tank 3. An inlet pipe 16 is provided on the side wall of the sedimentation tank 3, and the bottom of the reaction tank 1 is connected to the inlet pipe 16 through an inclined surface 17. The sedimentation tank 3 has a built-in second filter screen 18, which is located above the inlet of the inlet pipe 16. A supernatant outlet 19 is provided at the top of the sedimentation tank 3, which can be connected to the subsequent water treatment process. A sludge discharge valve 20 is provided at the bottom of the sedimentation tank 3 to periodically discharge the calcium fluoride precipitate.

[0019] The waste liquid storage tank 9 has a built-in first filter screen 21 and an activated carbon adsorption layer 22 to remove suspended impurities in the wastewater and prevent subsequent pipeline blockage. The waste liquid storage tank 9 is connected to the reaction tank 1 through the first inlet solenoid valve 23, and to the detection tank 2 through the diversion valve 24. The detection tank 2 is connected to the reaction tank 1 through the second inlet solenoid valve 25, which divides the wastewater into a main flow and a detection diversion flow. The main flow enters the reaction tank 1, and the detection diversion flow enters the detection tank 2 for concentration testing before entering the reaction tank 1, thus avoiding wastewater waste.

[0020] In actual use, the etching waste liquid of Mxene material is filtered and divided into two streams. The main water flows to the reaction tank 1, and the detection diversion flows to the detection tank 2 and then back to the reaction tank 1. Then, the reaction tank 1 is dosing reaction. The dosing amount is controlled by the solenoid valve 12 and the flow meter 11. After stirring for a set time, it enters the sedimentation tank 3 through the inclined plane 17 and the liquid inlet pipe 16 for solid-liquid separation, so that the supernatant is discharged and the cycle repeats.

[0021] Therefore, this utility model adopts the above-mentioned intelligent device for treating fluoride ions in Mxene material etching waste liquid, realizing the integrated operation of concentration prediction, automatic and precise dosing, and efficient reaction, avoiding the problem of incomplete reaction or excessive waste caused by insufficient reagents, improving the treatment effect of fluoride ions in waste liquid, and achieving a high degree of automation.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A device for intelligently treating fluoride ions in etching wastewater of Mxene materials, characterized in that: The system includes a reaction tank, a detection tank, a sedimentation tank, and a control system. The control system is electrically connected to the reaction tank, the detection tank, and the sedimentation tank. The reaction tank is connected to a reagent storage tank and a waste liquid storage tank. The reagent storage tank is located above the reaction tank, and the reaction tank is located directly above the sedimentation tank. The bottom of the reagent storage tank is connected to the reaction tank via a siphon pipe. The sedimentation tank has an inlet pipe on its side wall, and the bottom of the reaction tank is connected to the inlet pipe via an inclined surface. The top of the sedimentation tank has a supernatant outlet, and the bottom of the sedimentation tank has a sludge discharge valve.

2. The device for intelligently treating fluoride ions in etching wastewater of Mxene material according to claim 1, characterized in that: The waste liquid storage tank has a built-in first filter screen and an activated carbon adsorption layer. The waste liquid storage tank is connected to the reaction tank through a first water inlet solenoid valve. The waste liquid storage tank is connected to the detection tank through a diversion valve. The detection tank is connected to the reaction tank through a second water inlet solenoid valve.

3. The device for intelligently treating fluoride ions in etching wastewater of Mxene material according to claim 1, characterized in that: The detection cell contains a fluoride ion selective electrode, a reference electrode, and a liquid level sensor.

4. The device for intelligently treating fluoride ions in etching wastewater of Mxene material according to claim 1, characterized in that: A flow meter and a drug inlet solenoid valve are connected to the siphon tube.

5. The device for intelligently treating fluoride ions in etching wastewater of Mxene material according to claim 1, characterized in that: The sedimentation tank has a built-in second filter screen, which is located above the inlet of the liquid inlet pipe.

6. The device for intelligently treating fluoride ions in etching wastewater of Mxene material according to claim 1, characterized in that: The reaction tank has a built-in stirrer, and a dosing port is provided on the side wall of the reaction tank. The siphon pipe is connected to the dosing port through a one-way valve.

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