Non-ferrous metal mine wastewater treatment equipment

Abstract

The invention relates to the technical field of mine wastewater treatment, in particular to non-ferrous metal mine wastewater treatment equipment which comprises a wastewater deposition unit, a deep electrolysis unit and a dosing purification unit, and a deposition liquid inlet pipe with a power pump and a sludge discharge pipe are arranged on the outer side wall of the lower portion of the wastewater deposition unit at intervals. A first pipeline is mounted at the position of a primary supernatant pipe joint arranged in the middle of the wastewater deposition unit, the outlet end of the first pipeline is connected to the inlet end of the deep electrolysis unit, the outlet end of the deep electrolysis unit is connected with a second pipeline, and the outlet end of the second pipeline is connected to the inlet end of the dosing purification unit. The equipment can efficiently precipitate and filter wastewater with higher heavy metal content and electrolyze and separate out heavy metals, effectively ensures the treatment effect during wastewater treatment, and effectively cooperates with physical precipitation, electrolysis and biological dosing treatment to realize main purification treatment work on the wastewater.

Description

Technical Field

[0001] The invention relates to the technical field of mine wastewater treatment, in particular to non-ferrous metal mine wastewater treatment equipment. Background Art

[0002] Non-ferrous metal mine wastewater refers to wastewater containing pollutants such as heavy metals, acidic substances, and organic matter generated during the production process of non-ferrous metal mining, mineral processing, and smelting.

[0003] The sources of wastewater from non-ferrous metal mines mainly include the following three aspects: first, wastewater containing heavy metals, mineral particles and mineral processing agents generated during ore mining; second, wastewater containing a large amount of heavy metal ions, suspended solids and mineral processing agents generated after ore crushing, grinding, flotation and other processes; third, wastewater containing heavy metal smoke, sulfur dioxide and other pollutants generated during the smelting process. From its source, it can be seen that non-ferrous metal mine wastewater has the characteristics of complex composition, high toxicity and great difficulty in treatment.

[0004] At present, in the existing technology, the treatment of non-ferrous metal mine wastewater is mainly determined based on comprehensive considerations of factors such as the composition, concentration and discharge standards of the wastewater.

[0005] After searching, it was found that a device and method for treating acidic wastewater from non-ferrous metal mines was disclosed in the prior art document with patent application number CN202411056250.7, which mainly includes an electrochemical treatment system and a low-temperature treatment system connected to the electrochemical treatment system; the low-temperature treatment system includes a sedimentation tank, a low-temperature treatment tank, a drain pipe and a temperature return tank connected in sequence, a filter assembly is provided in the low-temperature treatment tank, and a pressurizing device and a cooling device are also provided to achieve a pressurized low-temperature environment in the low-temperature treatment tank.

[0006] It can be seen that by keeping the ambient temperature below -5°C, the impurities are precipitated as crystals, thereby achieving the purpose of improving the removal effect of wastewater impurities.

[0007] However, the use of low temperature control in the treatment of harmful substances consumes a lot of energy, especially when the wastewater treatment volume is large. The energy consumption for each ton of wastewater treated is huge. Therefore, it is not suitable for long-term treatment of non-ferrous metal mine wastewater with high heavy metal content.

[0008] Based on this, the present invention optimizes the colorant to solve the problems existing in the prior art in the process of non-ferrous metal mine wastewater treatment, and hereby proposes a new non-ferrous metal mine wastewater treatment equipment to better solve the problems existing in the prior art. Summary of the invention

[0009] The present invention solves one of the above technical problems, and the technical solution adopted is: non-ferrous metal mine wastewater treatment equipment, including a wastewater sedimentation unit, a deep electrolysis unit, and a dosing purification unit. A sedimentation liquid inlet pipe with a power pump and a sludge discharge pipe are respectively arranged at intervals on the lower outer wall of the wastewater sedimentation unit. The sedimentation liquid inlet pipe receives wastewater from the upstream after preliminary filtration, and the sludge discharge pipe is used to regularly discharge the sludge accumulated in the lower part of the wastewater sedimentation unit. A first pipeline is installed at the primary supernatant pipe joint arranged in the middle of the wastewater sedimentation unit, and the outlet end of the first pipeline is connected to the inlet end of the deep electrolysis unit. A first delivery pump is installed on the first pipeline, and a second pipeline is connected to the outlet end of the deep electrolysis unit. A second delivery pump is installed on the second pipeline, and the outlet end of the second pipeline is connected to the inlet end of the dosing purification unit. The water outlet end of the dosing purification unit is used to connect to a downstream water treatment station.

[0010] In any of the above schemes, it is preferred that the wastewater sedimentation unit includes a sedimentation tank with an open top, and a filter unit is installed in the lower part of the inner cavity of the sedimentation tank, the filter unit divides the sedimentation tank into a water accumulation chamber located at the upper part and a mud collection chamber located at the lower part, the sedimentation liquid inlet pipe and the sludge discharge pipe are both installed on the lower outer wall of the sedimentation tank and are both connected to the interior of the mud collection chamber; the first-level supernatant pipe joint is located at the upper part of the filter unit and its interior is connected to the interior of the water accumulation chamber.

[0011] In any of the above schemes, preferably, the filter unit includes an internal frame horizontally installed inside the water accumulation chamber, the outer wall of the internal frame is movably abutted against the inner wall of the water accumulation chamber, filter material is placed in the filter chamber inside the internal frame, and a primary filter screen and a secondary filter screen are fixedly installed at the openings at the bottom and top of the internal frame, respectively.

[0012] In any of the above schemes, preferably, the mesh size of the primary filter is larger than the mesh size of the secondary filter.

[0013] In any of the above solutions, preferably, a lifting ring is fixedly welded to the top center of the primary filter screen.

[0014] In any of the above schemes, preferably, lifting and telescopic rods are respectively arranged on both sides of the bottom of the built-in frame, the bottom of each lifting and telescopic rod is fixed to the bottom of the mud collecting chamber, and the top of the telescopic end of each lifting and telescopic rod is fixed to the bottom of the built-in frame.

[0015] In any of the above schemes, it is preferred that the deep electrolysis unit includes a cylindrical electrolytic cell, the bottom of which is fixedly mounted on the top of the supporting frame, a collecting space is arranged between the supporting frame and the bottom of the cylindrical electrolytic cell, the interior of the collecting space is used for operators to complete the collection of heavy metal precipitates, a sediment discharge component is installed inside the collecting space, the top of the sediment discharge component is installed on the bottom of the cylindrical electrolytic cell and is connected to the interior thereof, a two-stage electrolysis mechanism is installed inside the center of the electrolysis chamber of the cylindrical electrolytic cell, the top of the two-stage electrolysis mechanism is respectively connected to the power output end of a fixed central driving member, a wastewater feeding component is installed on the upper left side of the cylindrical electrolytic cell, a clear liquid water drawing component is installed on the upper right side of the cylindrical electrolytic cell, the wastewater feeding component is connected to the outlet end of the first pipeline, and the clear liquid water drawing component is connected to the inlet end of the second pipeline.

[0016] In any of the above schemes, it is preferred that the two-stage electrolysis mechanism includes an annular diaphragm assembly fixedly installed on the central bottom of the electrolysis chamber of the cylindrical electrolytic cell, a central fixed disk fixedly installed on the top of the annular diaphragm assembly, and a central driving member fixedly installed at the top center of the central fixed disk. The annular diaphragm assembly divides the electrolysis chamber into a central electrolysis center inner cavity and an electrolysis annular outer cavity located in the center, a first pole plate member is installed inside the electrolysis center inner cavity, and a second pole plate member is installed inside the electrolysis annular outer cavity. The first pole plate member and the second pole plate member are arranged opposite to each other and cooperate with each other to realize electrolysis operation when powered on, and the first pole plate member and the second pole plate member are controlled by an electrode controller configured in the working state to alternately serve as anode plates or cathode plates.

[0017] In any of the above schemes, it is preferred that the annular diaphragm assembly includes a mounting disk coaxially fixedly mounted on the central bottom of the electrolysis chamber, a plurality of positioning posts are fixedly mounted on the top of the mounting disk at uniform intervals along its circumference, a circle of ion exchange membrane is fixedly mounted on the inner side of each of the positioning posts, the ion exchange membrane is used to separate the electrolysis center cavity from the electrolysis annular outer cavity and allow anions and cations to pass through, a positioning cover is fixedly mounted on the top of each of the positioning posts, and a through hole is provided on the top of the positioning cover for a wastewater feeding component to enter the electrolysis annular outer cavity and for a clear liquid water drawing component to enter the electrolysis center cavity.

[0018] In any of the above schemes, it is preferred that the first pole plate component includes a first pole plate fixedly installed at the inner center of the electrolysis center inner cavity, and a center upper plate seat and a center lower plate seat are fixedly installed at the upper and lower ends of the first pole plate, respectively, and inner arc bearings are installed at the front and rear ends of the center upper plate seat and the center lower plate seat, respectively, the two inner arc bearings are symmetrically arranged and their outer side walls are movably pressed against the inner wall of the electrolysis center inner cavity, the top center of the center upper plate seat is fixedly connected to the first output end of the center driving member, and when the center driving member is working, it drives the center upper plate seat, the center lower plate seat, the first pole plate and the inner arc bearings on both sides to swing back and forth around the central axis of the electrolysis center inner cavity.

[0019] In any of the above schemes, it is preferred that the second pole plate component includes two second pole plates relatively spaced apart and arranged inside the electrolysis annular outer cavity, the two second pole plates are symmetrically arranged on both sides of the first pole plate, and outer arc-shaped bearings are fixedly installed on the front and rear sides of the upper and lower ends of each second pole plate, and the outer side walls of each outer arc-shaped bearing are movably abutted against the inner wall of the electrolysis annular outer cavity, and the central top of each second pole plate is fixedly connected to the output end of the central driving member. When the central driving member is working, it drives the first pole plate and each second pole plate to swing back and forth synchronously around the central axis of the electrolysis central cavity.

[0020] In any of the above schemes, it is preferred that the two second electrode plates and the first electrode plate complete low-speed mixing and stirring of the wastewater solution inside the electrolysis annular outer cavity and the electrolysis center inner cavity during the swinging process.

[0021] In addition, by keeping the first electrode plate and the second electrode plate, which are used alternately as the anode plate and the cathode plate, in motion, the phenomenon of bubbles in the electrolyte adhering to the electrode surface is effectively reduced; the timely removal of bubbles helps to maintain sufficient contact between the electrolyte and the electrode surface, thereby improving the efficiency of the electrolysis reaction.

[0022] By using a sandwich structure of two anode plates and one cathode plate or two cathode plates and one anode plate, the effective area in the electrolysis process can be increased, thereby improving the current density and electrolysis efficiency; making the electrolysis reaction more uniform, reducing local overheating or overcooling, and stabilizing the electrolysis process.

[0023] At the same time, it helps to improve the mass transfer process in the electrolyte; the ions in the wastewater are more likely to migrate to the electrode surface under the action of the electric field, accelerating the electrochemical reaction and improving the overall electrolysis efficiency.

[0024] In any of the above schemes, it is preferred that the sediment discharge component includes a sediment collection tube installed inside the collection space, and an inner collection tube and an outer collection tube with control valves are respectively provided on the top of both ends of the sediment collection tube through three-way connections, the top of each inner collection tube is fixed to the bottom of the cylindrical electrolytic cell and communicated with the interior of the electrolysis center cavity, and the top of each outer collection tube is fixed to the bottom of the cylindrical electrolytic cell and communicated with the interior of the electrolysis annular outer cavity.

[0025] In any of the above schemes, preferably, the number of the second pole plates is two, and the two second pole plates are symmetrically arranged in the electrolysis annular outer cavity on both sides of the first pole plate, and the tops of the two second pole plates and the top of the first pole plate are respectively connected to the corresponding output ends of the central driving member, and when the central driving member is working, it can simultaneously drive the first pole plate and the two second pole plates to swing back and forth periodically around the central axis of the electrolysis central cavity;

[0026] In any of the above schemes, it is preferred that the first pole plate and the second pole plate are used alternately as an anode plate and a cathode plate.

[0027] In any of the above schemes, it is preferred that, under the action of the central driving member, the two-stage electrolysis mechanism can realize fixed-axis reciprocating swing around the central axis of the cylindrical electrolytic cell, and the two-stage electrolysis mechanism is used to precipitate heavy metal impurities in the wastewater in the cylindrical electrolytic cell and form metal precipitates which are then accumulated at the bottom of the cylindrical electrolytic cell when in working condition.

[0028] In any of the above schemes, it is preferred that the central driving member includes a dual-axis servo motor fixedly mounted on the central top of the positioning upper cover, the lower output shaft of the dual-axis servo motor movably passes through the central hole of the positioning upper cover and extends to the inner cavity of the electrolysis center and is fixedly connected to the top center of the central upper plate seat, a top connecting plate is fixedly mounted on the top of the upper output shaft of the dual-axis servo motor, and output connecting vertical shafts are fixedly mounted on the bottom of both ends of the top connecting plate, the bottom of each output connecting vertical shaft is fixedly connected to the top center of the second electrode plate corresponding thereto, and arc-shaped constraint grooves for the lower ends of the wastewater feeding component and the clear liquid water drawing component to pass through are respectively provided on the top of both sides of the top connecting plate.

[0029] When the top connecting plate is in operation, it realizes reciprocating fixed-angle swinging under the driving action of the dual-axis servo motor and does not generate motion interference with the wastewater feeding component and the clear liquid water drawing component during the swinging process.

[0030] An electrode controller is fixedly installed on the central top of the top connecting plate. The electrode controller is connected to the two second pole plates and the first pole plate and controls the second pole plates and the first pole plate to be used alternately as anode plates and cathode plates.

[0031] In any of the above schemes, it is preferred that the wastewater feeding component includes a first riser connected to the outlet end of the first pipeline, a first multi-way pipe is installed at the bottom of the first riser, and the bottoms of two branch pipes with valves of the first multi-way pipe are respectively installed with a central liquid inlet pipe and an outer cavity liquid inlet pipe for communicating with the interior of the electrolysis center inner cavity and the electrolysis annular outer cavity.

[0032] The upper end of the first riser passes upward to above the arc-shaped restraining groove.

[0033] In any of the above schemes, it is preferred that the clear liquid water drawing component includes a second riser connected to the inlet end of the second pipeline, a second multi-way pipe is installed at the bottom of the second riser, and a central liquid drawing pipe and an outer cavity liquid drawing pipe for communicating with the inner part of the electrolysis center inner cavity and the inner part of the electrolysis annular outer cavity are respectively installed at the bottom of the two branch pipes with valves of the second multi-way pipe, and corrugated telescopic pipe sections are respectively arranged at the lower part of the central liquid drawing pipe and the lower part of the outer cavity liquid drawing pipe, a connecting plate is fixed at the bottom of each of the corrugated telescopic pipe sections, and a position-controlling telescopic rod is fixed on one side of each of the connecting plates, the top of each of the position-controlling telescopic rods is fixed to the bottom of the central fixed plate, and the bottom of each of the position-controlling telescopic rods is fixed to one side of the top of the connecting plate, and the position-controlling telescopic rod drives the expansion and contraction of the corrugated telescopic pipe section in the vertical direction through its own expansion and contraction.

[0034] The upper end of the second riser passes upward to above the arc-shaped restraining groove.

[0035] In any of the above schemes, it is preferred that the dosing purification unit includes a dosing tank, the liquid inlet end of the dosing tank is connected to the outlet end of the second pipeline, the outlet end of the dosing tank is connected to the downstream water treatment station through a pipeline, and a dosing tank connected to the interior of the dosing tank is installed on the top of the dosing tank.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. The non-ferrous metal mine wastewater treatment equipment provided in the present invention can complete efficient precipitation, filtration and electrolytic precipitation of heavy metals for wastewater with high heavy metal content, effectively ensure the treatment effect during wastewater treatment, and effectively cooperate with physical sedimentation, electrolysis and biological dosing treatment to achieve the main purification treatment of wastewater.

[0038] 2. In the present invention, when filtering wastewater, the method of water inlet at the bottom and water overflow at the top is adopted to effectively ensure the effect of filtering the wastewater, and effectively control the impurities in the wastewater to be located at the bottom for subsequent centralized accumulation and external discharge.

[0039] 3. The deep electrolysis unit of the present invention adopts the method of stirring and electrolyzing, which can effectively improve the fluidity of wastewater during the electrolysis process, effectively improve the effect of electrolysis, and improve the effect of heavy metal precipitation during the electrolysis process.

[0040] 4. The present invention treats nonferrous metal mine wastewater with a high heavy metal content, and uses electrolysis to quickly precipitate the heavy metals in the wastewater. The second plates on both sides clamp the first plate in the center, and the first and second plates are used alternately as anode plates and cathode plates to control the electrolysis effect during the electrolysis process; and the metal precipitates are precipitated alternately in the inner cavity of the electrolysis center and the inner cavity of the electrolysis annular outer cavity.

[0041] 5. When the first electrode plate and the second electrode plate in the deep electrolysis unit are alternately used as the anode plate and the cathode plate, they can complete fixed-axis and fixed-angle reciprocating swings under the driving action of the central driving member, effectively reducing the phenomenon of bubbles in the electrolyte adhering to the electrode surface; the timely removal of bubbles helps to maintain sufficient contact between the electrolyte and the electrode surface, thereby improving the efficiency of the electrolysis reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, the elements or components are not necessarily drawn according to the actual scale.

[0043] Figure 1 It is a structural schematic diagram of the present invention.

[0044] Figure 2 It is a schematic diagram of the internal structure of the deep electrolysis unit of the present invention.

[0045] Figure 3 for Figure 2 Schematic diagram of the local enlarged structure in the AA direction.

[0046] Figure 4 for Figure 2 Schematic diagram of the local enlarged structure in the BB direction.

[0047] Figure 5 for Figure 2 Schematic diagram of the local enlarged structure in the CC direction.

[0048] Figure 6It is a schematic diagram of the top view of the structure of each positioning column in the present invention after the mounting disc is installed.

[0049] In the figure, 1, first pipeline; 2, first delivery pump; 3, second pipeline; 4, second delivery pump; 5, sedimentation tank; 6, water accumulation chamber; 7, mud collection chamber; 8, sedimentation liquid inlet pipe; 9, sludge discharge pipe; 10, primary supernatant pipe joint; 11, built-in frame; 12, filter material; 13, primary filter screen; 14, secondary filter screen; 15, lifting ring; 16, lifting telescopic rod; 17, cylindrical electrolytic cell; 18, supporting frame; 19, collecting space; 20, central fixed plate; 21, electrolysis central cavity; 22, electrolysis annular outer cavity; 23, electrode controller; 24, first riser; 25, first multi-way pipe; 26, central liquid inlet pipe; 27, outer cavity inlet Liquid pipe; 28, second vertical pipe; 29, second multi-way pipe; 30, central liquid-drawing pipe; 31, outer cavity liquid-drawing pipe; 32, corrugated telescopic pipe section; 33, connecting plate; 34, position-control telescopic rod; 35, dosing tank; 36, dosing bin; 37, mounting disc; 38, positioning column; 39, ion exchange membrane; 40, positioning upper cover; 41, first pole plate; 42, central upper plate seat; 43, central lower plate seat; 44, inner arc-shaped bearing bush; 45, second pole plate; 46, outer arc-shaped bearing bush; 47, sedimentation collection pipe; 48, collection inner pipe; 49, collection outer pipe; 50, dual-axis servo motor; 51, top connecting plate; 52, output connection vertical shaft; 53, arc-shaped constraint groove. DETAILED DESCRIPTION

[0050] The following is a detailed description of the embodiments of the technical solution of the present invention in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present invention. Figure 1-Figure 6 as shown in .

[0051] Embodiment 1: Nonferrous metal mine wastewater treatment equipment, including a wastewater sedimentation unit, a deep electrolysis unit, and a dosing purification unit. A sedimentation liquid inlet pipe 8 and a sludge discharge pipe 9 with a power pump are arranged at intervals on the lower outer wall of the wastewater sedimentation unit. The sedimentation liquid inlet pipe 8 receives wastewater from the upstream after preliminary filtration, and the sludge discharge pipe 9 is used to regularly discharge the sludge accumulated at the bottom of the wastewater sedimentation unit. A first pipeline 1 is installed at the first-level supernatant pipe joint 10 arranged in the middle of the wastewater sedimentation unit, and the outlet end of the first pipeline 1 is connected to the inlet end of the deep electrolysis unit. A first delivery pump 2 is installed on the first pipeline 1, and a second pipeline 3 is connected to the outlet end of the deep electrolysis unit. A second delivery pump 4 is installed on the second pipeline 3, and the outlet end of the second pipeline 3 is connected to the inlet end of the dosing purification unit. The water outlet end of the dosing purification unit is used to connect to a downstream water treatment station.

[0052] The nonferrous metal mine wastewater treatment equipment in the present invention introduces the wastewater into the wastewater sedimentation unit for static sedimentation when continuing to treat the wastewater from the upstream after preliminary filtration. The supernatant after sedimentation is drained to the deep electrolysis unit for deep electrolysis treatment. During the deep electrolysis treatment, most of the heavy metals in the wastewater can be removed and the technical precipitates formed by the heavy metals are discharged at the bottom. The upper supernatant continues to be drained to the downstream dosing purification unit. After the supernatant enters the dosing purification unit, it is further purified by adding medicine.

[0053] During the wastewater drainage process, the first delivery pump 2 and the second delivery pump 4 are controlled to operate as required to ensure the flow rate during the delivery process.

[0054] In any of the above schemes, it is preferred that the wastewater sedimentation unit includes a sedimentation tank 5 with an open top, and a filter unit is installed at the lower part of the inner cavity of the sedimentation tank 5, and the filter unit divides the sedimentation tank 5 into a water accumulation chamber 6 located at the upper part and a mud collection chamber 7 located at the lower part, and the sedimentation liquid inlet pipe 8 and the sludge discharge pipe 9 are both installed on the lower outer wall of the sedimentation tank 5 and are both connected to the interior of the mud collection chamber 7; the first-level supernatant pipe joint 10 is located at the upper part of the filter unit and its interior is connected to the interior of the water accumulation chamber 6.

[0055] In the wastewater sedimentation unit, wastewater is deposited inside the sedimentation tank 5. After sedimentation, solid impurities or sludge are accumulated at the bottom of the mud collecting chamber 7, and supernatant is deposited in the upper water accumulation chamber 6. By regularly opening the first pipeline 1, the water inside the water accumulation chamber 6 can be continuously transported downstream. When it is necessary to clean the impurities inside the mud collecting chamber 7, the sludge discharge pipe 9 is controlled to discharge the material outward.

[0056] In any of the above schemes, it is preferred that the filtration unit includes a built-in frame 11 horizontally installed inside the water accumulation chamber 6, the outer wall of the built-in frame 11 is movably abutted against the inner wall of the water accumulation chamber 6, a filter material 12 is placed in the filter chamber inside the built-in frame 11, and a primary filter screen 13 and a secondary filter screen 14 are fixedly installed at the openings at the bottom and top of the built-in frame 11, respectively.

[0057] It should be noted that the filtration unit in the present invention mainly relies on the primary filter screen 13, the secondary filter screen 14, and the filter material 12 to achieve multi-stage filtration. When the wastewater slowly enters the mud collecting chamber 7 through the sedimentation inlet pipe 8, the liquid level will continue to rise, and eventually, under the action of the filtration unit, larger impurities will be deposited at the bottom, and supernatant will accumulate inside the water accumulation chamber 6.

[0058] In any of the above solutions, preferably, the mesh size of the primary filter 13 is larger than the mesh size of the secondary filter 14 .

[0059] In any of the above solutions, preferably, a lifting ring 15 is fixedly welded to the top center of the primary filter screen 13 .

[0060] The provided lifting ring 15 can facilitate the entire filter unit to be taken out regularly and cleaned.

[0061] In any of the above schemes, it is preferred that lifting and telescopic rods 16 are respectively provided on both sides of the bottom of the built-in frame 11, the bottom of each lifting and telescopic rod 16 is fixed to the bottom of the mud collecting chamber 7, and the top of the telescopic end of each lifting and telescopic rod 16 is fixed to the bottom of the built-in frame 11.

[0062] Controlling the lifting and lowering heights of each lifting and telescopic rod 16 can control the volume of the mud collecting chamber 7, thereby facilitating controlling the sedimentation effect for wastewater with different mud contents.

[0063] In any of the above schemes, it is preferred that the deep electrolysis unit includes a cylindrical electrolytic cell 17, the bottom of the cylindrical electrolytic cell 17 is fixedly mounted on the top of a support frame 18, a collecting space 19 is provided between the support frame 18 and the bottom of the cylindrical electrolytic cell 17, the inside of the collecting space 19 is used for operators to complete the collection of heavy metal precipitates, a sediment discharge component is installed in the collecting space 19, and the top of the sediment discharge component is installed on the cylindrical electrolytic cell 17. The bottom of the cylindrical electrolytic cell 17 is connected with its interior. A two-stage electrolysis mechanism is installed in the center of the electrolysis chamber of the cylindrical electrolytic cell 17. The top of the two-stage electrolysis mechanism is respectively connected to the power output end of a fixed central driving member. A wastewater feeding component is installed on the upper left side of the cylindrical electrolytic cell 17, and a clear liquid water drawing component is installed on the upper right side of the cylindrical electrolytic cell 17. The wastewater feeding component is connected to the outlet end of the first pipeline 1, and the clear liquid water drawing component is connected to the inlet end of the second pipeline 3.

[0064] It should be noted that: when the deep electrolysis unit is working, the wastewater transported by the first pipeline 1 directly enters the cylindrical electrolytic cell 17 through the wastewater feeding component and stops transporting the wastewater after reaching the set amount; the two-stage electrolysis mechanism is started to perform electrolysis operation. During the electrolysis process, the control center drive component is controlled to periodically reciprocate to drive the two-stage electrolysis mechanism to achieve slow stirring of the internal wastewater while performing electrolysis, thereby achieving the purpose of improving the electrolysis effect.

[0065] In any of the above schemes, it is preferred that the two-stage electrolysis mechanism includes an annular diaphragm assembly fixedly installed on the central bottom of the electrolysis chamber of the cylindrical electrolytic cell 17, a central fixed disk 20 fixedly installed on the top of the annular diaphragm assembly, and a central driving member fixedly installed at the top center of the central fixed disk 20. The annular diaphragm assembly divides the electrolysis chamber into an electrolysis central inner cavity 21 located in the center and an electrolysis annular outer cavity 22. A first pole plate member is installed inside the electrolysis central inner cavity 21, and a second pole plate member is installed inside the electrolysis annular outer cavity 22. The first pole plate member and the second pole plate member are arranged opposite to each other and cooperate with each other to realize electrolysis operation when powered on. The first pole plate member and the second pole plate member are controlled by an electrode controller 23 in the working state to be used alternately as anode plates or cathode plates.

[0066] Due to the presence of the annular diaphragm assembly, the inside of the electrolytic cell is divided into an electrolytic central cavity 21 and an electrolytic annular outer cavity 22. When the two-stage electrolytic mechanism is working, the first electrode plate and the second electrode plate are controlled to act as anode plates and cathode plates in turn, and metal precipitates can be continuously precipitated during the electrolysis process after the anode plates and cathode plates are powered on. It should be noted that before the anode plates and cathode plates are alternately switched, the metal precipitates deposited at the bottom of the electrolytic central cavity 21 and the electrolytic annular outer cavity 22 need to be cleaned and discharged in sequence.

[0067] In any of the above schemes, it is preferred that the wastewater feeding component includes a first riser 24 connected to the outlet end of the first pipeline 1, and a first multi-way pipe 25 is installed at the bottom of the first riser 24, and the bottoms of two branch pipes with valves of the first multi-way pipe 25 are respectively installed with a central liquid inlet pipe 26 and an outer cavity liquid inlet pipe 27 for communicating with the interior of the electrolysis central inner cavity 21 and the electrolysis annular outer cavity 22.

[0068] The upper end of the first vertical pipe 24 extends upward to above the arc-shaped restraining groove 53 .

[0069] When the wastewater feeding component is working, the pump body on the first pipeline 1 provides conveying power, and the wastewater is directly conveyed to the electrolysis center cavity 21 and the electrolysis annular outer cavity 22 through the two branch pipes with valves of the first multi-way pipe 25, thereby completing synchronous liquid delivery.

[0070] In any of the above schemes, it is preferred that the clear liquid water-drawing component includes a second riser 28 connected to the inlet end of the second pipeline 3, a second multi-way pipe 29 is installed at the bottom of the second riser 28, and a central liquid-drawing pipe 30 and an outer cavity liquid-drawing pipe 31 for communicating with the interior of the electrolysis center inner cavity 21 and the electrolysis annular outer cavity 22 are respectively installed at the bottom of the two branch pipes with valves of the second multi-way pipe 29, and corrugated telescopic pipe sections 32 are respectively arranged at the lower part of the central liquid-drawing pipe 30 and the lower part of the outer cavity liquid-drawing pipe 31, a connecting plate 33 is fixed at the bottom of each of the corrugated telescopic pipe sections 32, and a position-controlling telescopic rod 34 is fixed on one side of each of the connecting plates 33, the top of each of the position-controlling telescopic rods 34 is fixed to the bottom of the central fixed plate 20, and the bottom of each of the position-controlling telescopic rods 34 is fixed to one side of the top of the connecting plate 33, and the position-controlling telescopic rod 34 drives the expansion and contraction of the corrugated telescopic pipe section 32 in the vertical direction through its own expansion and contraction.

[0071] The upper end of the second vertical pipe 28 extends upward to above the arc-shaped restraining groove 53 .

[0072] After the wastewater in the electrolysis center inner cavity 21 and the electrolysis annular outer cavity 22 has been fully electrolytically treated, the metal precipitates accumulated at the bottom of the electrolysis center inner cavity 21 and the electrolysis annular outer cavity 22 are discharged, and at the same time, the wastewater after heavy metal removal inside the electrolysis center inner cavity 21 and the electrolysis annular outer cavity 22 is precipitated, and finally the clear liquid water-drawing component is controlled to move downward to realize the rapid transportation of the water inside the electrolysis center inner cavity 21 and the electrolysis annular outer cavity 22 to the downstream.

[0073] Since the position-controlling telescopic rod 34 and the bellows telescopic tube section 32 are provided, the position-controlling telescopic rod 34 can be controlled to extend or shorten to drive the bottom of the bellows telescopic tube section 32 to move upward or downward, thereby realizing the upward drawing of supernatant at different depths.

[0074] In any of the above schemes, it is preferred that the dosing purification unit includes a dosing tank 35, the liquid inlet end of the dosing tank 35 is connected to the outlet end of the second pipeline 3, the outlet end of the dosing tank 35 is connected to the downstream water treatment station through a pipeline, and a dosing tank 36 connected to the interior of the dosing tank 35 is installed on the top of the dosing tank 35.

[0075] The supernatant after the electrolytic treatment is directly transported to the dosing chamber 36 and enters the dosing pool 35 from the dosing chamber 36. The required reagents are added into the dosing pool 35 as needed to complete the dosing treatment.

[0076] Embodiment 2: Compared with Embodiment 1, this embodiment is different in that it also includes the following technical features:

[0077] In any of the above schemes, it is preferred that the annular diaphragm assembly includes a mounting disc 37 coaxially fixedly mounted on the central bottom of the electrolysis chamber, a plurality of positioning posts 38 are fixedly mounted on the top of the mounting disc 37 at uniform intervals along its circumference, a circle of ion exchange membrane 39 is fixedly mounted on the inner side of each of the positioning posts 38, the ion exchange membrane 39 is used to separate the electrolysis center inner cavity 21 from the electrolysis annular outer cavity 22 and allow anions and cations to pass through, a positioning upper cover 40 is fixedly mounted on the top of each of the positioning posts 38, and a through hole is provided on the top of the positioning upper cover 40 for a wastewater feeding component to enter the electrolysis annular outer cavity 22 and for a clear liquid water drawing component to enter the electrolysis center inner cavity 21.

[0078] During electrolysis, the annular diaphragm assembly of the present invention relies on the mounting disc 37 and a plurality of positioning columns 38 to form an outer frame for fixing the ion exchange membrane 39 to ensure the relative stability of the ion exchange membrane 39 after installation. The ion exchange membrane 39 can separate the electrolysis chamber into an electrolysis center inner chamber 21 located in the center and an electrolysis annular outer chamber 22 located at the periphery. When the two-stage electrolysis mechanism starts the electrolysis operation, the electrolysis center inner chamber 21 located in the center and the electrolysis annular outer chamber 22 located at the periphery can perform ion exchange respectively. Since the polarity of the electrode plates inside the electrolysis center inner chamber 21 located in the center and the electrolysis annular outer chamber 22 located at the periphery can be changed alternately, the metal can be controlled to precipitate at the corresponding position (the position corresponding to the cathode plate as the metal precipitate) as needed and then collected and discharged.

[0079] In any of the above schemes, it is preferred that the first pole plate member includes a first pole plate 41 fixedly installed at the inner center of the electrolysis center cavity 21, and a center upper plate seat 42 and a center lower plate seat 43 are fixedly installed at the upper and lower ends of the first pole plate 41, and inner arc bearings 44 are installed at the front and rear ends of the center upper plate seat 42 and the center lower plate seat 43, respectively. The two inner arc bearings 44 are symmetrically arranged and their outer side walls are respectively movably pressed against the inner wall of the electrolysis center cavity 21, and the top center of the center upper plate seat 42 is fixedly connected to the first output end of the center driving member. When the center driving member is working, it drives the center upper plate seat 42, the center lower plate seat 43, the first pole plate 41 and the inner arc bearings 44 on both sides to swing back and forth around the central axis of the electrolysis center cavity 21.

[0080] In any of the above schemes, it is preferred that the second pole plate member includes two second pole plates 45 relatively spaced apart and arranged inside the electrolysis annular outer cavity 22, the two second pole plates 45 are symmetrically arranged on both sides of the first pole plate 41, and outer arc-shaped bearings 46 are fixedly installed on the front and rear sides of the upper and lower ends of each second pole plate 45, and the outer side walls of each outer arc-shaped bearing 46 are movably abutted against the inner wall of the electrolysis annular outer cavity 22, and the central top of each second pole plate 45 is fixedly connected to the output end of the central driving member. When the central driving member is working, it drives the first pole plate 41 and each second pole plate 45 to swing back and forth synchronously around the central axis of the electrolysis central cavity 21.

[0081] The first electrode plate 41 and the second electrode plate 45 are both made of graphite material that can be used as both an anode plate and a cathode plate. When the first electrode plate 41 and the second electrode plate 45 are powered on, the electrode controller 23 controls one of them to be an anode plate and the other to be a cathode plate.

[0082] Taking into account the need to avoid excessive accumulation of metal precipitates on the cathode plate during the electrolytic precipitation of metal precipitates, a central driving member is used to drive the first electrode plate 41 and the second electrode plate 45 to follow and realize fixed-axis swing, thereby promoting the rapid shedding of metal precipitates under the impact of wastewater serving as the electrolyte, thereby extending the service life of the anode plate and the cathode plate and improving the use effect.

[0083] When the first pole plate 41 and the second pole plate 45 perform fixed-axis swinging, the inner arc-shaped bearing bush 44 provided on the first pole plate 41 can play a role of restraint and guidance, and the outer arc-shaped bearing bush 46 provided on the inner arc-shaped bearing bush 44 can also play a role of restraint and guidance.

[0084] In any of the above schemes, it is preferred that the two second electrode plates 45 and the first electrode plate 41 complete low-speed mixing and stirring of the wastewater solution inside the electrolysis annular outer cavity 22 and the electrolysis central inner cavity 21 during the swinging process.

[0085] In addition, by keeping the first electrode plate 41 and the second electrode plate 45, which are used alternately as the anode plate and the cathode plate, in motion, the phenomenon of bubbles in the electrolyte adhering to the electrode surface is effectively reduced; the timely removal of bubbles helps to maintain sufficient contact between the electrolyte and the electrode surface, thereby improving the efficiency of the electrolysis reaction.

[0086] In any of the above schemes, it is preferred that the sediment discharge component includes a sediment collection pipe 47 installed inside the collection space 19, and a collection inner pipe 48 and a collection outer pipe 49 with control valves are respectively arranged on the top of both ends of the sediment collection pipe 47 through three-way connections, the top of each collection inner pipe 48 is fixed to the bottom of the cylindrical electrolytic cell 17 and is connected to the interior of the electrolysis center cavity 21, and the top of each collection outer pipe 49 is fixed to the bottom of the cylindrical electrolytic cell 17 and is connected to the interior of the electrolysis annular outer cavity 22.

[0087] After the wastewater inside the electrolytic cell is electrolyzed, the heavy metal ions in the wastewater will continuously precipitate and fall off in the wastewater in the form of metal precipitates, and finally deposit at the bottom of the corresponding electrolysis center inner cavity 21 or the bottom of the electrolysis annular outer cavity 22; by controlling the opening of the corresponding valves on the collection inner tube 48 and the collection outer tube 49, the wastewater containing metal precipitates can be continuously precipitated in coordination with the precipitation collection tube 47 and the pump body configured thereon, thereby ultimately achieving the purpose of reducing the heavy metal content in the remaining wastewater, and facilitating the subsequent continuous purification of the wastewater.

[0088] In any of the above schemes, it is preferred that the number of the second pole plates is two, and the two second pole plates are symmetrically arranged in the electrolysis annular outer cavity 22 on both sides of the first pole plate, and the tops of the two second pole plates and the top of the first pole plate are respectively connected to the corresponding output ends of the central driving member, and when the central driving member is working, it can simultaneously drive the first pole plate and the two second pole plates to swing back and forth periodically around the central axis of the electrolysis central cavity 21.

[0089] In any of the above schemes, it is preferred that the first pole plate and the second pole plate are used alternately as an anode plate and a cathode plate.

[0090] By using a sandwich structure of two anode plates and one cathode plate or two cathode plates and one anode plate, the effective area in the electrolysis process can be increased, thereby improving the current density and electrolysis efficiency; making the electrolysis reaction more uniform, reducing local overheating or overcooling, and stabilizing the electrolysis process.

[0091] At the same time, it helps to improve the mass transfer process in the electrolyte; the ions in the wastewater are more likely to migrate to the electrode surface under the action of the electric field, accelerating the electrochemical reaction and improving the overall electrolysis efficiency.

[0092] In any of the above schemes, it is preferred that under the action of the central driving member, the two-stage electrolysis mechanism can realize fixed-axis reciprocating swing around the central axis of the cylindrical electrolytic cell 17, and the two-stage electrolysis mechanism is used to precipitate heavy metal impurities in the wastewater in the cylindrical electrolytic cell 17 and form metal precipitates which are then accumulated at the bottom of the cylindrical electrolytic cell 17 when in working state.

[0093] In any of the above schemes, it is preferred that the central driving member includes a dual-axis servo motor 50 fixedly mounted on the central top of the positioning upper cover 40, the lower output shaft of the dual-axis servo motor 50 movably passes through the central hole of the positioning upper cover 40 and extends into the interior of the electrolysis center inner cavity 21 and is fixedly connected to the top center of the central upper plate seat 42 through the central fixed disk 20, a top connecting plate 51 is fixedly mounted on the top of the upper output shaft of the dual-axis servo motor 50, and output connecting vertical shafts 52 are fixedly mounted on the bottom of both ends of the top connecting plate 51, and the bottom of each output connecting vertical shaft 52 is fixedly connected to the top center of the second electrode plate 45 corresponding thereto, and arc-shaped constraint grooves 53 for the lower ends of the wastewater feeding component and the clear liquid water drawing component to pass through are respectively provided on the top of both sides of the top connecting plate 51.

[0094] When the top connecting plate 51 is in operation, it swings back and forth at a fixed angle under the driving action of the dual-axis servo motor 50 and does not cause motion interference with the wastewater feeding component and the clear liquid drawing component during the swinging process.

[0095] An electrode controller 23 is fixedly installed at the center top of the top connecting plate 51. The electrode controller 23 is connected to the two second pole plates 45 and the first pole plate 41 and controls the second pole plates 45 and the first pole plate 41 to be used alternately as anode plates and cathode plates.

[0096] From the above, it can be seen that the non-ferrous metal mine wastewater treatment equipment can complete efficient precipitation, filtration and electrolytic precipitation of heavy metals in wastewater with high heavy metal content, effectively ensure the treatment effect of wastewater treatment, and effectively cooperate with physical sedimentation, electrolysis and biological dosing to achieve the main purification of wastewater; when filtering the wastewater, the method of lower water inlet and upper overflow is adopted to effectively ensure the effect of filtering the wastewater, and effectively control the impurities in the wastewater to be located at the bottom for subsequent centralized accumulation and external discharge; the deep electrolysis unit adopts the method of stirring while electrolyzing to effectively improve the fluidity of the wastewater during the electrolysis process, effectively improve the effect of electrolysis, and improve the effect of precipitation of heavy metal precipitates during the electrolysis process; for non-ferrous metals with high heavy metal content, Metal mine wastewater is treated by electrolysis to achieve rapid precipitation of heavy metals in the wastewater. The second electrode plates 45 on both sides clamp the first electrode plate 41 in the center, and the first electrode plate 41 and the second electrode plate 45 are alternately used as anode plates and cathode plates to control the electrolysis effect during the electrolysis process; metal precipitates are alternately precipitated in the electrolysis center cavity 21 and the electrolysis annular outer cavity 22; the first electrode plate 41 and the second electrode plate 45 in the deep electrolysis unit are alternately used as anode plates and cathode plates, and can complete fixed-axis and fixed-angle reciprocating swings under the driving action of the central driving member, effectively reducing the phenomenon of bubbles in the electrolyte adhering to the electrode surface; so that the timely removal of bubbles helps to maintain sufficient contact between the electrolyte and the electrode surface, thereby improving the efficiency of the electrolysis reaction.

[0097] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. For those skilled in the art, any replacement improvements or changes made to the implementation methods of the present invention fall within the protection scope of the present invention.

[0098] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. Nonferrous metal mine wastewater treatment equipment, characterized by: It includes a wastewater sedimentation unit, a deep electrolysis unit, and a dosing purification unit. On the lower outer wall of the wastewater sedimentation unit, a sedimentation liquid inlet pipe with a power pump and a sludge discharge pipe are respectively arranged at intervals. The sedimentation liquid inlet pipe receives wastewater from the upstream after preliminary filtration, and the sludge discharge pipe is used to regularly discharge the sludge accumulated in the lower part of the wastewater sedimentation unit. A first pipeline is installed at the first-level supernatant pipe joint arranged in the middle of the wastewater sedimentation unit, and the outlet end of the first pipeline is connected to the inlet end of the deep electrolysis unit. A first delivery pump is installed on the first pipeline, and a second pipeline is connected to the outlet end of the deep electrolysis unit. A second delivery pump is installed on the second pipeline, and the outlet end of the second pipeline is connected to the inlet end of the dosing purification unit. The water outlet end of the dosing purification unit is used to connect to a downstream water treatment station.

2. The non-ferrous metal mine wastewater treatment equipment according to claim 1, characterized in that: The wastewater sedimentation unit includes a sedimentation tank with an open top, and a filter unit is installed at the lower part of the inner cavity of the sedimentation tank. The filter unit divides the sedimentation tank into a water accumulation chamber located at the upper part and a mud collection chamber located at the lower part. The sedimentation liquid inlet pipe and the sludge discharge pipe are both installed on the lower outer wall of the sedimentation tank and are both connected to the interior of the mud collection chamber; the first-level supernatant pipe joint is located at the upper part of the filter unit and its interior is connected to the interior of the water accumulation chamber.

3. The non-ferrous metal mine wastewater treatment equipment according to claim 2, characterized in that: The filter unit includes an internal frame horizontally installed inside the water accumulation chamber, the outer wall of the internal frame is movably abutted against the inner wall of the water accumulation chamber, filter material is placed in the filter chamber inside the internal frame, and a primary filter screen and a secondary filter screen are fixedly installed at the openings at the bottom and top of the internal frame, respectively.

4. The non-ferrous metal mine wastewater treatment equipment according to claim 3 is characterized in that: The deep electrolysis unit includes a cylindrical electrolytic cell, the bottom of which is fixedly mounted on the top of a supporting frame, a collecting space is provided between the supporting frame and the bottom of the cylindrical electrolytic cell, the interior of the collecting space is used for operators to complete the collection of heavy metal precipitates, a sediment discharge component is installed inside the collecting space, the top of the sediment discharge component is installed on the bottom of the cylindrical electrolytic cell and is connected to the interior thereof, a two-stage electrolysis mechanism is installed inside the center of the electrolysis chamber of the cylindrical electrolytic cell, the top of the two-stage electrolysis mechanism is respectively connected to the power output end of a fixed central driving member, a wastewater feeding component is installed on the upper left side of the cylindrical electrolytic cell, a clear liquid water drawing component is installed on the upper right side of the cylindrical electrolytic cell, the wastewater feeding component is connected to the outlet end of the first pipeline, and the clear liquid water drawing component is connected to the inlet end of the second pipeline.

5. The non-ferrous metal mine wastewater treatment equipment according to claim 4, characterized in that: The two-stage electrolysis mechanism includes an annular diaphragm assembly fixedly installed on the central bottom of the electrolysis chamber of the cylindrical electrolytic cell, a central fixed disk fixedly installed on the top of the annular diaphragm assembly, and a central driving member fixedly installed at the top center of the central fixed disk. The annular diaphragm assembly divides the electrolysis chamber into a central electrolysis center inner cavity and an electrolysis annular outer cavity located in the center. A first pole plate member is installed inside the electrolysis center inner cavity, and a second pole plate member is installed inside the electrolysis annular outer cavity. The first pole plate member and the second pole plate member are arranged opposite to each other and cooperate with each other to realize electrolysis operation when powered on. The first pole plate member and the second pole plate member are controlled by an electrode controller configured in the working state to alternately serve as anode plates or cathode plates.

6. The non-ferrous metal mine wastewater treatment equipment according to claim 5, characterized in that: The number of the second pole plates is two, and the two second pole plates are symmetrically arranged in the electrolysis annular outer cavity on both sides of the first pole plate, and the tops of the two second pole plates and the top of the first pole plate are respectively connected to the corresponding output ends of the central driving member, and when the central driving member is working, it can simultaneously drive the first pole plate and the two second pole plates to swing back and forth periodically around the central axis of the electrolysis central cavity; The first pole plate and the second pole plate are used alternately as an anode plate and a cathode plate.

7. The non-ferrous metal mine wastewater treatment equipment according to claim 6, characterized in that: Under the action of the central driving member, the two-stage electrolysis mechanism can realize fixed-axis reciprocating swing around the central axis of the cylindrical electrolytic cell. In the working state, the two-stage electrolysis mechanism is used to precipitate heavy metal impurities in the wastewater in the cylindrical electrolytic cell and form metal precipitates which are then accumulated at the bottom of the cylindrical electrolytic cell.

8. The non-ferrous metal mine wastewater treatment equipment according to claim 7, characterized in that: The wastewater feeding component includes a first riser connected to the outlet end of the first pipeline, a first multi-way pipe is installed at the bottom of the first riser, and the bottoms of two branch pipes with valves of the first multi-way pipe are respectively installed with a central liquid inlet pipe and an outer cavity liquid inlet pipe for communicating with the interior of the electrolysis central inner cavity and the electrolysis annular outer cavity.

9. The non-ferrous metal mine wastewater treatment equipment according to claim 8, characterized in that: The clear liquid water-drawing component comprises a second riser connected to the inlet end of the second pipeline, a second multi-way pipe is installed at the bottom of the second riser, a central liquid-drawing pipe and an outer cavity liquid-drawing pipe for communicating with the inner part of the electrolysis center inner cavity and the inner part of the electrolysis annular outer cavity are respectively installed at the bottom of the two branch pipes with valves of the second multi-way pipe, corrugated telescopic pipe sections are respectively arranged at the lower part of the central liquid-drawing pipe and the lower part of the outer cavity liquid-drawing pipe, a connecting plate is fixed at the bottom of each of the corrugated telescopic pipe sections, a position-controlling telescopic rod is respectively fixed on one side of each of the connecting plates, the top of each of the position-controlling telescopic rods is fixed to the bottom of the central fixed plate, the bottom of each of the position-controlling telescopic rods is fixed to one side of the top of the connecting plate, and the position-controlling telescopic rod drives the expansion and contraction of the corrugated telescopic pipe section in the vertical direction through its own expansion and contraction.

10. The non-ferrous metal mine wastewater treatment equipment according to claim 9, characterized in that: The dosing purification unit includes a dosing tank, the liquid inlet end of the dosing tank is connected to the outlet end of the second pipeline, the outlet end of the dosing tank is connected to the downstream water treatment station through a pipeline, and a dosing bin connected to the interior of the dosing tank is installed on the top of the dosing tank.

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