Sectional type efficient mixing rotating disc reactor for beneficiation wastewater and use method of sectional type efficient mixing rotating disc reactor

Abstract

The invention relates to the technical field of wastewater treatment, in particular to a sectional type efficient mixing rotating disc reactor for beneficiation wastewater and a using method of the sectional type efficient mixing rotating disc reactor. The sectional type efficient mixing rotating disc reactor comprises a water inlet adjusting unit, a rotating disc flocculation unit, a settling separation unit, an inclined plate separation unit and a water outlet adjusting unit, the rotating disc flocculation unit, the settling separation unit and the inclined plate separation unit are separated through movable partition plates, a blade is arranged in the water inlet adjusting unit, a rotating disc is arranged in the rotating disc flocculation unit, an inclined plate is arranged in the inclined plate separation unit, and a speed adjusting motor outside the water inlet adjusting unit is sequentially connected with the blade, the rotating disc and the inclined plate through a rotating shaft. By adopting the structure, the water inlet adjusting unit, the turntable flocculation unit, the settling separation unit, the inclined plate separation unit and the water outlet adjusting unit are communicated in sequence, and a continuous process of pretreatment, flocculation, primary precipitation, deep separation and water outlet adjustment is formed in a variable volume or unit amplification operation mode.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a segmented high-efficiency mixing rotary reactor for mineral processing wastewater and its method of use. Background Technology

[0002] Mineral processing wastewater contains high concentrations of suspended particles (such as fine gangue and unrecovered minerals) and heavy metal ions (such as... Residual reagents (such as xanthate and black reagent) can cause serious environmental pollution if directly discharged, while reuse requires deep treatment to avoid equipment blockage and reduced mineral processing efficiency. Currently, mineral processing wastewater treatment mostly adopts a mixing reaction and sedimentation separation process, but existing equipment has the following limitations: The volume ratio of the mixing and sedimentation units is fixed, and the reaction space cannot be adjusted according to the wastewater quality. When the concentration of suspended solids in the raw water rises sharply, insufficient flocculation or overload of the sedimentation zone can easily occur, leading to system failure. Summary of the Invention

[0003] The purpose of this invention is to provide a segmented high-efficiency mixing rotary reactor for mineral processing wastewater and its usage method. The influent regulating unit, rotary flocculation unit, sedimentation separation unit, inclined plate separation unit and effluent regulating unit are connected in sequence to form a continuous process of pretreatment, flocculation, primary sedimentation, deep separation and effluent regulation.

[0004] To achieve the above objectives, the present invention provides a segmented high-efficiency mixing rotary reactor for mineral processing wastewater, comprising an influent regulating unit, a rotary disc flocculation unit, a sedimentation separation unit, an inclined plate separation unit, and an effluent regulating unit connected in sequence. The rotary disc flocculation unit, the sedimentation separation unit, and the inclined plate separation unit are all separated by movable partitions. The influent regulating unit contains a blade, the rotary disc flocculation unit contains a rotary disc, and the inclined plate separation unit contains an inclined plate. A speed-regulating motor outside the influent regulating unit is connected to the blade, the rotary disc, and the inclined plate in sequence via a rotating shaft.

[0005] Preferably, the inlet water regulating unit and the rotary disc flocculation unit, as well as the inclined plate separation unit and the outlet water regulating unit, are all separated by a fixed partition. The fixed partition is hinged to the rotating shaft, and the fixed partition is provided with several water passage holes.

[0006] Preferably, the reactor is provided with a threaded inner wall guide rail, the edge of the movable partition is helically slidably connected to the inner wall guide rail, the center of the movable partition is hinged to the rotating shaft, and the edge of the movable partition matches the single thread shape of the inner wall guide rail.

[0007] Preferably, the movable partition has several water passage holes on its edge, and a sealing ring is provided on the outer sleeve of the movable partition.

[0008] Preferably, the water inlet regulating unit is provided with a water inlet at the top, and the blades of the water inlet regulating unit are staggered on the rotating shaft.

[0009] Preferably, the turntables in the turntable flocculation unit are evenly arranged on the rotating shaft.

[0010] Preferably, the inclined plates of the inclined plate separation unit are evenly arranged on the rotating shaft, the inclined plates have a fan-shaped structure, and the inclined plates are inclined on the rotating shaft.

[0011] Preferably, the bottom of the water inlet regulating unit, the rotary flocculation unit, the sedimentation separation unit, and the inclined plate separation unit are all equipped with drain pipes.

[0012] Preferably, a drain pipe is provided at the top of the water outlet regulating unit.

[0013] The above-mentioned method of using the segmented high-efficiency mixing rotary reactor for mineral processing wastewater includes the following steps:

[0014] S1. Add raw water and flocculant into the water inlet regulating unit through the inlet, start the speed regulating motor to drive the rotating shaft to rotate, and the impeller mixes the raw water and flocculant to obtain a mixed system. The mixed system enters the rotary flocculation unit through the water passage of the moving partition.

[0015] S2. The rotary table stirs the mixed system in the rotary flocculation unit, and the mixed system continues to enter the sedimentation and separation unit through the water passage.

[0016] The mixed system obtained in S3 and S2 is precipitated in the sedimentation separation unit. The sediment obtained after sedimentation enters the inclined plate separation unit through the water passage for further sedimentation.

[0017] S4. The inclined plate of the inclined plate separation unit rotates, and the obtained liquid enters the water outlet regulating unit through the water passage and leaves the water outlet regulating unit through the drain pipe.

[0018] Preferably, the height of the water passage hole is adjusted by rotating the movable baffle, and the volume of the turntable flocculation unit, sedimentation separation unit and inclined plate separation unit is adjusted by rotating the movable baffle on the rotating shaft.

[0019] Therefore, the present invention employs the above-mentioned segmented high-efficiency mixing rotary reactor for mineral processing wastewater and its usage method, the beneficial effects of which are:

[0020] 1. The inlet water regulating unit, rotary disc flocculation unit, sedimentation separation unit, inclined plate separation unit and effluent regulating unit are connected in sequence to form a continuous process of pretreatment, flocculation, primary sedimentation, deep separation and effluent regulation;

[0021] 2. The inlet rotary flocculation unit, sedimentation separation unit and inclined plate separation unit can be combined in different ways. The connection order can be changed, and each unit can be repeated or not set according to the inlet conditions to optimize the flexibility of reactor treatment.

[0022] 3. The rotary flocculation unit, sedimentation separation unit, and inclined plate separation unit can achieve variable volume operation of each unit by moving the partition.

[0023] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the segmented high-efficiency mixing rotary reactor for mineral processing wastewater according to the present invention;

[0025] Figure 2 This is a schematic diagram of the movable partition in this invention;

[0026] Figure 3 This is a schematic diagram of the connection between the turntable and the rotating shaft in this invention.

[0027] Figure label:

[0028] 1. Inlet water regulating unit; 2. Rotary disc flocculation unit; 3. Sedimentation separation unit; 4. Inclined plate separation unit; 5. Outlet water regulating unit; 6. Speed ​​regulating motor; 7. Rotating shaft; 8. Rotary disc; 9. Moving partition; 10. Paddle; 11. Water passage hole; 12. Inlet; 13. Drain pipe; 14. Drain pipe; 15. Inclined plate; 16. Inner wall guide rail. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments. Unless otherwise defined, the technical or scientific terms used in this invention should be understood in their ordinary sense by those skilled in the art. The features mentioned above or in the specific examples mentioned in this invention can be combined arbitrarily, and these specific embodiments are only used to illustrate the invention and are not intended to limit the scope of the invention.

[0030] Example 1

[0031] like Figures 1-3 As shown, this invention provides a segmented high-efficiency mixing rotary reactor for mineral processing wastewater, comprising an influent regulating unit 1, a rotary disc flocculation unit 2, a sedimentation separation unit 3, an inclined plate separation unit 4, and an effluent regulating unit 5 connected in sequence. The rotary disc flocculation unit 2, sedimentation separation unit 3, and inclined plate separation unit 4 are all separated by movable partitions 9, and the influent regulating unit 1 is separated from the rotary disc flocculation unit 2, and the inclined plate separation unit 4 is separated from the effluent regulating unit 5 by fixed partitions. The influent regulating unit 1 contains a blade 10, the rotary disc flocculation unit 2 contains a rotary disc 8, and the inclined plate separation unit 4 contains an inclined plate 15. A speed-regulating motor 6 outside the influent regulating unit 1 is connected in sequence to the blade 10, the rotary disc 8, and the inclined plate 15 via a rotating shaft 7.

[0032] The influent regulating unit 1, rotary disc flocculation unit 2, sedimentation separation unit 3, inclined plate separation unit 4, and effluent regulating unit 5 are sequentially connected to form a continuous process of pretreatment, flocculation, primary sedimentation, deep separation, and effluent regulation. The adjacent outer walls of the rotary disc flocculation unit 2, sedimentation separation unit 3, and inclined plate separation unit 4 are connected by flanges. Multiple rotary disc flocculation units 2, sedimentation separation units 3, and inclined plate separation units 4 can be added or removed according to usage requirements. The volume of the rotary disc flocculation unit 2, sedimentation separation unit 3, and inclined plate separation unit 4 can be adjusted by rotating the movable baffle 9. Moving the movable baffle 9 does not affect the normal operation of the rotary disc 8 and inclined plate 15. When the concentration of suspended solids in the raw water is high, the space of the rotary disc flocculation unit 2 is increased; when the concentration is low, the space of the sedimentation separation unit 3 is increased.

[0033] The rotary disc flocculation unit 2, sedimentation separation unit 3, and inclined plate separation unit 4 are all connected through water passage holes 11 on the movable partition 9. The inlet water regulating unit 1 is connected to the rotary disc flocculation unit 2, and the inclined plate separation unit 4 is connected to the outlet water regulating unit 5 through water passage holes 11 on the fixed partition. The water flow velocity gradient decreases step by step to avoid floc breakage and improve separation efficiency. When the raw water quality fluctuates, the rotation speed of the rotary disc 8, the volume of the flocculation unit, and the height of the water passage holes 11 can be adjusted synchronously to ensure stable effluent water quality.

[0034] The speed-regulating motor 6 synchronously drives the impeller 10, turntable 8, and inclined plate 15 via the rotating shaft 7, achieving synergistic mixing, flocculation, and separation. The turntable 8 of the turntable flocculation unit 2 works in conjunction with the speed-regulating motor 6, adjusting the rotation speed to suit different water qualities, ensuring thorough mixing of the flocculant and wastewater to form dense flocs. The inclined plate separation unit 4's inclined plate 15 shortens the particle settling distance, improving the settling efficiency of fine particles and reducing the amount of flocculant required.

[0035] The reactor is equipped with a threaded inner wall guide rail 16, and the edge of the movable baffle 9 is helically slidably connected to the inner wall guide rail 16. Both the movable baffle 9 and the fixed baffle are hinged to the rotating shaft 7 via bearings, and the rotation of the rotating shaft 7 does not cause the movable baffle 9 to rotate accordingly. The edge of the movable baffle 9 matches the single thread shape of the inner wall guide rail 16, and a sealing ring is provided on the outer sleeve of the movable baffle 9. The sealing ring fills the gap between the movable baffle 9 and the single thread of the inner wall guide rail 16 to prevent crossflow between units. At the same time, the setting of the sealing ring does not affect the movement of the movable baffle 9 along the inner wall guide rail 16, so that the units are connected only through the water passage hole 11.

[0036] The movable baffle 9 has several water passage holes 11 on its edge. The height of the water passage holes 11 can be adjusted by rotating the movable baffle 9 around the rotating shaft 7. The positioning of the water passage holes 11 ensures a smooth water flow and reduces the impact on the water in each unit. By independently rotating each movable baffle 9 to adjust the height of the water passage holes 11, the water level difference can be controlled, thereby adjusting the flow rate to adapt to the needs of different treatment stages.

[0037] The water inlet regulating unit 1 is provided with an inlet 12 at the top, and the blades 10 of the water inlet regulating unit 1 are staggered on the rotating shaft 7. The blades 10 are responsible for preliminary mixing. After the raw water and flocculant enter from the inlet 12, the staggered blades 10 increase the collision between the agent and the particles when they rotate.

[0038] In the rotary flocculation unit 2, the rotating discs 8 are evenly arranged on the rotating shaft 7. The rotating discs 8 enhance the flocculation reaction, and the edges of the rotating discs 8 generate shear force, causing fine particles to collide and agglomerate. At the same time, the rotating discs 8 drive the water flow to form an axial circulation, avoiding local uneven concentration and ensuring a sufficient flocculation reaction.

[0039] The inclined plates 15 of the inclined plate separation unit 4 are evenly arranged on the rotating shaft 7. The inclined plates 15 have a fan-shaped structure, which promotes the separation of fine particles. The inclined plates 15 are inclined on the rotating shaft 7 at an angle ranging from 45° to 60°. The fan-shaped inclined plates 15 rotate slowly with the rotating shaft 7, which shortens the settling distance of the particles and avoids scaling on the surface of the inclined plates 15 through rotation. The fan-shaped structure design increases the contact area between the inclined plates 15 and the water. After being captured, the fine particles slide down to the bottom with the rotation of the inclined plates 15, improving the separation efficiency.

[0040] The bottom of the water inlet regulating unit 1, the rotary disc flocculation unit 2, the sedimentation separation unit 3, and the inclined plate separation unit 4 are all equipped with drain pipes 13. The drain pipe 13 of the water inlet regulating unit 1 removes large particulate impurities, the drain pipes 13 of the rotary disc flocculation unit 2 and the sedimentation separation unit 3 discharge flocculent sediment, and the drain pipe 13 of the inclined plate separation unit 4 removes fine particulate sludge.

[0041] The water outlet regulating unit 5 is equipped with a drain pipe 14 at the top, which only collects the upper layer of clean water to avoid disturbing the small amount of sediment at the bottom.

[0042] Example 2

[0043] The method of using the segmented high-efficiency mixing rotary reactor for mineral processing wastewater in Example 1 includes the following steps:

[0044] S1. Adjust the height of the water passage hole 11 by rotating the movable baffle 9. Adjust the volume of the turntable flocculation unit 2, sedimentation separation unit 3 and inclined plate separation unit 4 by rotating the movable baffle 9 on the rotating shaft 7. Add raw water and flocculant to the inlet regulating unit 1 through the inlet 12. Start the speed regulating motor 6 to drive the rotating shaft 7 to rotate. The impeller 10 mixes the raw water and flocculant to obtain a mixed system. The mixed system enters the turntable flocculation unit 2 through the water passage hole 11 of the movable baffle 9.

[0045] S2, the turntable 8 stirs the mixture in the turntable flocculation unit 2, and the mixture continues to enter the sedimentation separation unit 3 through the water passage 11. When the concentration of suspended solids in the influent is high, the moving baffle 9 is pushed to increase the volume of the turntable flocculation unit 2, while the height of the water passage 11 of the moving baffle 9 is reduced to ensure sufficient flocculation.

[0046] The mixed system obtained in S3 and S2 undergoes sedimentation in sedimentation separation unit 3. The sedimented liquid obtained after sedimentation enters inclined plate separation unit 4 through water passage 11 for further sedimentation. The sedimentation separation unit 3 and inclined plate separation unit 4 form a water level gradient through the height difference of water passage 11, which allows the supernatant to flow smoothly into inclined plate unit 15, avoiding disturbance of the sedimentation layer.

[0047] S4. The inclined plate 15 of the inclined plate separation unit 4 rotates, and the obtained liquid enters the water outlet regulating unit 5 through the water passage 11 and leaves the water outlet regulating unit 5 through the drain pipe 14.

[0048] Therefore, the present invention adopts the above-mentioned segmented high-efficiency mixing rotary reactor for mineral processing wastewater and its usage method, wherein the influent regulating unit, the rotary flocculation unit, the sedimentation separation unit, the inclined plate separation unit and the effluent regulating unit are connected in sequence to form a continuous process of pretreatment, flocculation, primary sedimentation, deep separation and effluent regulation.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention 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 solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A segmented high-efficiency mixing rotary reactor for mineral processing wastewater, characterized in that: It includes an inlet regulating unit, a rotary disc flocculation unit, a sedimentation separation unit, an inclined plate separation unit, and an outlet regulating unit connected in sequence. The rotary disc flocculation unit, the sedimentation separation unit, and the inclined plate separation unit are all separated by movable partitions. The inlet regulating unit is equipped with impellers, the rotary disc flocculation unit is equipped with a rotary disc, and the inclined plate separation unit is equipped with an inclined plate. The speed regulating motor outside the inlet regulating unit is connected to the impellers, the rotary disc, and the inclined plate in sequence through a rotating shaft.

2. The segmented high-efficiency mixing rotary reactor for mineral processing wastewater according to claim 1, characterized in that: The reactor is equipped with a threaded inner wall guide rail. The edge of the movable partition is helically slidably connected to the inner wall guide rail. The movable partition is hinged to the rotating shaft. The edge of the movable partition matches the single thread shape of the inner wall guide rail.

3. The segmented high-efficiency mixing rotary reactor for mineral processing wastewater according to claim 1, characterized in that: The movable partition has several water passage holes on its edge, and a sealing ring is installed on the outer sleeve of the movable partition.

4. The segmented high-efficiency mixing rotary reactor for mineral processing wastewater according to claim 1, characterized in that: The water inlet is located at the top of the water inlet regulating unit, and the blades of the water inlet regulating unit are staggered on the rotating shaft.

5. The segmented high-efficiency mixing rotary reactor for mineral processing wastewater according to claim 1, characterized in that: In the rotary flocculation unit, the rotary discs are evenly arranged on the rotating shaft.

6. The segmented high-efficiency mixing rotary reactor for mineral processing wastewater according to claim 1, characterized in that: The inclined plates of the inclined plate separation unit are evenly arranged on the rotating shaft. The inclined plates have a fan-shaped structure and are inclined on the rotating shaft.

7. The segmented high-efficiency mixing rotary reactor for mineral processing wastewater according to claim 1, characterized in that: The bottom of the water inlet regulating unit, the rotary flocculation unit, the sedimentation separation unit, and the inclined plate separation unit are all equipped with drain pipes.

8. The segmented high-efficiency mixing rotary reactor for mineral processing wastewater according to claim 1, characterized in that: A drain pipe is installed at the top of the water outlet regulating unit.

9. A method for using a segmented high-efficiency mixing rotary reactor for mineral processing wastewater, characterized in that: Using the segmented high-efficiency mixing rotary reactor as described in any one of claims 1-8, the method includes the following steps: S1. Add raw water and flocculant into the water inlet regulating unit through the inlet, start the speed regulating motor to drive the rotating shaft to rotate, and the impeller mixes the raw water and flocculant to obtain a mixed system. The mixed system enters the rotary flocculation unit through the water passage of the moving partition. S2. The rotary table stirs the mixed system in the rotary flocculation unit, and the mixed system continues to enter the sedimentation and separation unit through the water passage. The mixed system obtained in S3 and S2 is precipitated in the sedimentation separation unit. The sediment obtained after sedimentation enters the inclined plate separation unit through the water passage for further sedimentation. S4. The inclined plate of the inclined plate separation unit rotates, and the obtained liquid enters the water outlet regulating unit through the water passage and leaves the water outlet regulating unit through the drain pipe.

10. The method of using the segmented high-efficiency mixing rotary reactor for mineral processing wastewater as described in claim 9, characterized in that: The height of the water passage hole can be adjusted by rotating the movable baffle, and the volume of the turntable flocculation unit, sedimentation separation unit and inclined plate separation unit can be adjusted by moving the movable baffle on the rotating shaft.

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