Advanced induction automatic dosing system for phosphorite wastewater treatment

Abstract

The utility model provides an advanced induction automatic dosing system for phosphorite wastewater treatment, which is characterized in that a suspended matter probe is arranged at the position of a water inlet of a ground sedimentation tank and is electrically connected with a control center, a dosing tank is communicated with the ground sedimentation tank through a dosing pump, a proportional electromagnetic valve is arranged on a dosing pipe and is electrically connected with the control center, and the control center is electrically connected with the control center. A plurality of underground water pumps are further arranged, the underground water pumps are communicated with a water inlet of the ground sedimentation tank, and the underground water pumps are electrically connected with the control center; the control center controls the proportional electromagnetic valve to be opened through detection of the suspended matter probe or the opening number of the multiple underground water pumps so as to feed chemicals into the ground sedimentation tank. And the suspended matter probe and the underground water pump are electrically connected with the control center, so that the automatic control of the dosing process is realized, and the requirement of manual operation is reduced. By optimizing the dosing process, the environmental protection requirement is met, the operation cost is reduced, and the economic benefit is improved.

Description

Technical Field

[0001] The utility model relates to the field of phosphate ore wastewater treatment, in particular to an advanced induction automatic dosing system for phosphate ore wastewater treatment. Background Technique

[0002] Phosphate ore mining involves the impact on water environment quality. The raw water is the mine water inflow and mining wastewater during the phosphate ore mining process, and the main pollutants are suspended solids and total phosphorus. The phosphate ore mine wastewater mainly comes from groundwater, including surface infiltration water, rock fissure water, etc. Affected by the mining process, groundwater and rock formation water come into contact with the phosphate ore layer and rock formation, resulting in a series of physical and chemical reactions, making it contain a certain amount of pollutants such as suspended solids (SS). Its characteristics are large water volume, low pollutant content, and high suspended solid content. According to the characteristics of the mine water, the collected water sample is analyzed as mine water containing suspended solids. Except for the excessive suspended solids and total phosphorus, the other indicators meet the discharge standard requirements.

[0003] The mining mine water is collected and enters the underground sump, and large particle solids are removed by gravity sedimentation. Then, the precipitated wastewater is lifted to the ground by a lift pump, first enters the pH adjustment tank, and then enters the high-efficiency phosphorus removal and coagulation tank for dosing to carry out the phosphorus removal and coagulation reaction. A coagulant aid is continuously added. The coagulation tank is designed as a baffle tank, and the baffle effect is used to fully mix the reagents (phosphorus remover, compatible high molecular polyacrylamide) with the raw water for reaction. After the phosphorus removal, coagulation and coagulant aid reactions, the wastewater flows into the horizontal flow sedimentation tank by gravity, so that the mud and water after phosphorus removal treatment are separated. The supernatant flows into the clear water tank by gravity, and after precipitation again, the qualified water is discharged into the nearby river through the detection and metering tank set at the end.

[0004] The existing dosing method is automatic induction flow dosing, which is linked with the PLC control system of the fully automatic dosing device in the dosing room through online monitoring of flow data. When the online monitoring flow data starts to increase from 0 L / S, the fully automatic dosing device starts to automatically dose. When the online monitoring flow data decreases to less than 10 L / S, the fully automatic dosing device stops dosing. The advantage of this dosing mode is that it doses in real time, which can prevent the excessive total phosphorus and suspended solids caused by insufficient dosing. The disadvantage is that there is reagent waste, and the dosing amount cannot be automatically adjusted with the change of flow rate, and the purpose of energy conservation and consumption reduction cannot be achieved. Content of the Utility Model

[0005] The main purpose of the utility model is to provide an advanced induction automatic dosing system for phosphate ore wastewater treatment, which solves the problem that the existing dosing method cannot automatically adjust the dosing amount with the change of flow rate and cannot achieve the purpose of energy conservation and consumption reduction.

[0006] To solve the above technical problems, the technical solution adopted by the present utility model is as follows: A phosphorus ore wastewater treatment advanced induction automatic dosing system. A suspended solids probe is provided at the water inlet position of the ground sedimentation tank. The suspended solids probe is electrically connected to the control center. The dosing tank is communicated with the ground sedimentation tank through a dosing pump. A proportional solenoid valve is provided on the dosing pipe. The proportional solenoid valve is electrically connected to the control center. There are also multiple underground water pumps. The underground water pumps are communicated with the water inlet of the ground sedimentation tank. The multiple underground water pumps are electrically connected to the control center;

[0007] The control center controls the opening of the proportional solenoid valve to add medicine into the ground sedimentation tank by detecting through the suspended solids probe or by the number of multiple underground water pumps turned on.

[0008] In a preferred embodiment, a PLC controller is provided inside the control center. The PLC controller is electrically connected to multiple underground water pumps, the suspended solids probe, and the proportional solenoid valve.

[0009] In a preferred embodiment, the suspended solids probe is arranged inside the ground sedimentation tank through a mounting seat, and the suspended solids probe is arranged below the water surface.

[0010] In a preferred embodiment, the suspended solids probe is installed at the end of the wire pipe. The wire of the suspended solids probe passes through the wire pipe and is electrically connected to the control center. The wire pipe is slidably connected to the mounting seat.

[0011] In a preferred embodiment, a vertically structured sliding rod is provided on the mounting seat. At least one sliding sleeve is provided on the wire pipe. The sliding sleeve is sleeved on the sliding rod and is slidably connected to the sliding rod.

[0012] In a preferred embodiment, a float ring is further provided on the wire pipe. The float ring is sleeved on the wire pipe.

[0013] In a preferred embodiment, the middle of the float ring is connected to a fixed ring. The fixed ring is sleeved on the wire pipe.

[0014] In a preferred embodiment, a nut is further provided on the fixed ring. The nut passes through the fixed ring and abuts against the position of the wire pipe to fix the float ring.

[0015] The utility model provides an advanced induction automatic dosing system for phosphate ore wastewater treatment. Through the electrical connection of the suspended solid probe and the underground water pump to the control center, the automatic control of the dosing process is realized, reducing the need for manual operation. The system can monitor the concentration of influent suspended solids in real time and automatically adjust the dosing amount according to the monitoring results to ensure the timeliness and effectiveness of wastewater treatment. When the suspended solid concentration is lower than a certain value, the system does not dose, and natural sedimentation is used to reach the discharge standard, thus saving drug consumption and energy consumption. Through PLC programming control, the system can automatically adjust the opening degree of the proportional solenoid valve according to the number of underground water pumps turned on to achieve precise dosing and avoid drug waste. When the mine drainage volume increases, the system can automatically increase the dosing amount to ensure the continuity and stability of wastewater treatment and improve the treatment efficiency. Through advanced induction automatic dosing, it is ensured that the mine wastewater can meet the requirements of up-to-standard discharge under any circumstances, reducing environmental pollution. Through the automatic control system, the dependence on manual intervention is reduced, and the possibility of human operation errors is lowered. By optimizing the dosing process, while meeting the environmental protection requirements, the operating cost is reduced and the economic benefit is improved. The system can adapt to different mine drainage volumes and changes in suspended solid concentrations, and has strong adaptability and flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0017] Figure 1 is the overall system layout structure diagram of the present utility model;

[0018] Figure 2 is the installation structure diagram of the suspended solid probe of the present utility model.

[0019] In the figure: ground sedimentation tank 1; dosing pipeline 2; suspended solid probe 3; water inlet 4; underground water pump 5; proportional solenoid valve 6; control center 7; dosing pump 8; dosing tank 9; wire pipe 10; sliding rod 11; sliding sleeve 12; mounting seat 13; fixing ring 14; float ring 15. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] As Figures 1-2 shown, an advanced induction automatic dosing system for phosphate ore wastewater treatment. A suspended solid probe 3 is provided at the water inlet 4 of the ground sedimentation tank 1. The suspended solid probe 3 is electrically connected to the control center 7. The dosing tank 9 is communicated with the ground sedimentation tank 1 through the dosing pump 8. A proportional solenoid valve 6 is provided on the dosing pipeline. The proportional solenoid valve 6 is electrically connected to the control center 7. There are also multiple underground water pumps 5. The underground water pumps 5 are communicated with the water inlet 4 of the ground sedimentation tank 1. The multiple underground water pumps 5 are electrically connected to the control center 7;

[0021] The control center 7 controls the opening of the proportional solenoid valve 6 to add medicine to the inside of the ground sedimentation tank 1 through the detection of the suspended matter probe 3 or the number of downhole water pumps 5 that are turned on. The control center 7 controls the opening of the proportional solenoid valve 6 to add medicine to the sedimentation tank according to the detection result of the suspended matter probe 3 or the number of downhole water pumps 5 that are turned on.

[0022] The water inflow of phosphate mines is constantly changing, with different water inflows in the dry season and the wet season. Taking this mine as an example, the normal water inflow is about 8,000 m³ / day, and it can reach 12,000 m³ / day in the wet season. The suspended solids in the mine water are constantly changing, affected by the disturbance of the underground water quality, and fluctuate regularly. For example, the suspended solids are high during the slag discharge period, slightly higher during the rock drilling and blasting period, and low during the night shift when no one is working.

[0023] Through long-term sampling and analysis of suspended matter in the water inlet of the ground sedimentation tank, it is found that the total phosphorus in the mine wastewater is directly proportional to the suspended matter. When the suspended matter is below a certain value, no chemicals are added to the sedimentation tank, and the wastewater can meet the emission requirements through natural sedimentation in the sedimentation tank. When it is higher than a certain value, it is necessary to add chemicals for control. In addition, the amount of chemicals added is a fixed value. When the mine drainage volume increases, the amount of chemicals added must be increased to ensure that the emission meets the standards.

[0024] Through long-term analysis, it is determined that the total phosphorus in mine wastewater is directly proportional to the suspended solids. When the suspended solids concentration is lower than the set value, no medicine is added to the sedimentation tank, and natural sedimentation is used to meet the discharge standards. When the suspended solids concentration is higher than the set value, the system automatically turns on the dosing device for control.

[0025] The control center 7 is equipped with a PLC controller for programming control. When the suspended solids in the influent exceed a set value, the dosing device is automatically turned on, and when it is lower than the set value, it is automatically turned off. According to the drainage situation of the downhole pump, the opening of the proportional solenoid valve 6 is automatically adjusted to achieve accurate dosing:

[0026] When a pump downhole is discharging water, the proportional solenoid valve 6 is half opened.

[0027] When the two pumps in the well are draining water at the same time, the proportional solenoid valves 6 are all opened.

[0028] By optimizing the dosing process, the operating costs can be reduced and the economic benefits can be improved.

[0029] In the preferred embodiment, a PLC controller is provided inside the control center 7, and the PLC controller is electrically connected to a plurality of downhole water pumps 5, a suspended matter probe 3, and a proportional solenoid valve 6. A PLC controller is installed inside the control center 7 as the control core of the entire system.

[0030] The PLC controller is electrically connected to a plurality of downhole water pumps 5 to achieve remote monitoring and control of the water pumps.

[0031] The PLC controller is electrically connected to the suspended solids probe 3 and receives in real time the data of the suspended solids concentration detected by the probe.

[0032] The PLC controller is electrically connected to the proportional solenoid valve 6 and automatically adjusts the chemical dosing amount according to the suspended solids concentration and the working state of the water pump.

[0033] The PLC controller automatically determines whether chemical dosing is required based on the suspended solids concentration detected by the suspended solids probe 3.

[0034] When the suspended solids concentration is lower than the preset threshold, the PLC controller commands the proportional solenoid valve 6 to close or reduce the opening degree, reducing or stopping the chemical dosing.

[0035] When the suspended solids concentration is higher than the preset threshold, the PLC controller commands the proportional solenoid valve 6 to increase the opening degree, starting or increasing the chemical dosing.

[0036] Through the intelligent control of the PLC controller, accurate chemical dosing is achieved, drug waste is avoided, the purpose of energy conservation and consumption reduction is achieved, and at the same time, it is ensured that the wastewater treatment meets the environmental protection discharge standards.

[0037] In the preferred solution, the suspended solids probe 3 is arranged inside the ground sedimentation tank 1 through the mounting seat 13, and the suspended solids probe 3 is arranged below the water surface. The suspended solids probe 3 is installed below the water surface so as to be able to accurately monitor the concentration of suspended solids in the water.

[0038] Installing the probe below the water surface can avoid being affected by the water surface fluctuation and ensure the accuracy of the measurement. The installation position of the probe should avoid the interference of the sediment at the bottom of the sedimentation tank to ensure the reliability of the measurement data.

[0039] The suspended solids probe 3 is electrically connected to the PLC controller of the control center 7 through a cable and transmits the measurement data in real time. The probe and its mounting seat 13 should have appropriate waterproof and corrosion-resistant characteristics to adapt to the chemical and physical environment in the sedimentation tank.

[0040] In the preferred solution, the suspended solids probe 3 is installed at the end of the wire pipe 10. The wire of the suspended solids probe 3 passes through the wire pipe 10 and is electrically connected to the control center 7. The wire pipe 10 is slidably connected to the mounting seat 13. The suspended solids probe 3 is installed at the end of the wire pipe 10 to ensure that the probe can penetrate into the sedimentation tank 1 for measurement. The wire of the suspended solids probe 3 passes through the inside of the wire pipe 10 and is electrically connected to the control center 7 to transmit the measurement data. The sliding connection allows the distance between the suspended solids probe 3 and the water surface to be adjusted according to the water level depth of the sedimentation tank 1 to ensure that the probe is always located at an appropriate measurement position. The sliding connection simplifies the maintenance and position adjustment process of the probe and facilitates the operator to make quick adjustments according to needs.

[0041] The wire tube 10 needs to have good sealing performance to prevent moisture from seeping in and affecting the insulation performance of the wires and the electronic components of the probe.

[0042] In a preferred embodiment, a vertically structured sliding rod 11 is provided on the mounting base 13, and at least one sliding sleeve 12 is provided on the wire tube 10. The sliding sleeve 12 is sleeved on the sliding rod 11 and is slidably connected to the sliding rod 11. By moving the position of the sliding sleeve 12 on the wire tube 10 along the sliding rod 11, the depth of the suspended matter probe 3, that is, the relative distance from the water surface, can be adjusted.

[0043] The movement of the sliding sleeve 12 on the sliding rod 11 should be designed to be simple and easy to operate to reduce the workload of the operator.

[0044] In a preferred embodiment, a float ring 15 is further provided on the wire tube 10. The float ring 15 is sleeved on the wire tube 10. The float ring 15 sleeved on the wire tube 10 forms an integral whole with the wire tube 10. When the water level in the sedimentation tank 1 rises, the buoyancy force received by the float ring 15 increases, driving the wire tube 10 and the probe 3 to move upward. The function of the float ring 15 is to ensure that regardless of how the water level changes, the suspended matter probe 3 can maintain a constant distance from the water surface, so as to accurately measure under different water level conditions.

[0045] The float ring 15 should be designed with sufficient buoyancy to support the weight of the wire tube 10 and the probe 3, and at the same time remain stable to prevent movement due to wind waves or water flow fluctuations.

[0046] Considering that the float ring 15 will contact the water surface, it should be made of corrosion-resistant material to resist possible chemical corrosion.

[0047] In a preferred embodiment, the middle part of the float ring 15 is connected to the fixing ring 14. The fixing ring 14 is sleeved on the wire tube 10. A nut is further provided on the fixing ring 14. The nut passes through the fixing ring 14 and abuts against the wire tube 10 to fix the position of the float ring 15. The middle part of the float ring 15 is connected to the fixing ring 14. This design allows the float ring to drive the probe 3 to rise or fall when floating on the water surface. The fixing ring 14 is sleeved on the wire tube 10 and serves as a fixed point for adjusting the position of the float ring 15. A nut is provided on the fixing ring 14. The nut can pass through the fixing ring and abut against the wire tube 10 to fix the position of the float ring 15.

[0048] By rotating the nut, the position of the fixing ring 14 on the wire tube 10 can be adjusted, thereby adjusting the position of the float ring 15, and further controlling the height of the suspended matter probe 3 underwater.

[0049] This adjustment mechanism allows the operator to adjust the depth of the probe 3 according to the water level change in the sedimentation tank 1 to meet different measurement requirements.

[0050] The suspended matter probe 3 can not only automatically respond to water level changes, but also precisely set the position of the probe underwater by manually adjusting the nuts on the fixing ring 14, so as to realize detection at different positions below the water surface, improving the flexibility and accuracy of measurement.

[0051] The above embodiments are only the preferred technical solutions of the present utility model and should not be regarded as limitations on the present utility model. The protection scope of the present utility model shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present utility model.

Claims

1. A phosphate wastewater treatment advanced induction automatic dosing system, characterized by: A suspended matter probe (3) is provided at the water inlet (4) of the ground sedimentation tank (1), and the suspended matter probe (3) is electrically connected to a control center (7). A dosing tank (9) is connected to the ground sedimentation tank (1) via a dosing pump (8). A proportional solenoid valve (6) is provided on the dosing pipe, and the proportional solenoid valve (6) is electrically connected to the control center (7). A plurality of downhole water pumps (5) are also provided, and the downhole water pumps (5) are connected to the water inlet (4) of the ground sedimentation tank (1), and the plurality of downhole water pumps (5) are electrically connected to the control center (7); The control center (7) controls the opening of the proportional solenoid valve (6) to add chemicals into the ground sedimentation tank (1) through the detection of the suspended matter probe (3) or the number of openings of multiple downhole water pumps (5).

2. According to claim 1, a phosphate wastewater treatment advanced sensing automatic dosing system is characterized by: A PLC controller is provided inside the control center (7), and the PLC controller is electrically connected to a plurality of downhole water pumps (5), a suspended matter probe (3), and a proportional solenoid valve (6).

3. According to claim 1, a phosphate wastewater treatment advanced sensing automatic dosing system is characterized by: The suspended matter probe (3) is arranged inside the ground sedimentation tank (1) via a mounting seat (13), and the suspended matter probe (3) is arranged below the water surface.

4. According to claim 3, the advanced sensing automatic dosing system for phosphate wastewater treatment is characterized by: The suspended matter probe (3) is mounted on the end of the wire tube (10), the wire of the suspended matter probe (3) passes through the wire tube (10) and is electrically connected to the control center (7), and the wire tube (10) is slidably connected to the mounting seat (13).

5. According to claim 4, the advanced sensing automatic dosing system for phosphate wastewater treatment is characterized by: A sliding rod (11) of a vertical structure is provided on the mounting seat (13), and at least one sliding sleeve (12) is provided on the wire tube (10); the sliding sleeve (12) is sleeved on the sliding rod (11) and is slidably connected to the sliding rod (11).

6. According to claim 4, the advanced sensing automatic dosing system for phosphate wastewater treatment is characterized by: The line tube (10) is also provided with a floating ring (15), and the floating ring (15) is sleeved on the line tube (10).

7. According to claim 6, a phosphate wastewater treatment advanced sensing automatic dosing system is characterized by: The middle part of the floating ring (15) is connected to the fixing ring (14), and the fixing ring (14) is sleeved on the line tube (10).

8. According to claim 7, the advanced sensing automatic dosing system for phosphate wastewater treatment is characterized by: The fixing ring (14) is also provided with a nut, which passes through the fixing ring (14) and abuts against the position of the floating ring (15) fixed on the line tube (10).

Images