A magnetic coagulation and sedimentation integrated device for sewage treatment

Abstract

The present invention discloses an integrated magnetic coagulation and sedimentation device for sewage treatment, comprising a reaction tank, a dosing mechanism, a magnetic powder adding mechanism, a first stirring mechanism, a second stirring mechanism and a magnetic powder lifting mechanism; a plurality of baffles are arranged in the reaction tank to separate the reaction tank into a first reaction chamber and a second reaction chamber which are interconnected; the dosing mechanism is used to add flocculants into the first reaction chamber; the magnetic powder adding mechanism is used to add magnetic powder into the second reaction chamber; the magnetic powder lifting mechanism comprises a spiral wire, a power supply and a lifting drive. The beneficial effect of the technical solution provided by the present invention is that the spiral wire is driven to reciprocate up and down by the lifting drive, and when the spiral wire moves upward, the spiral wire is energized to make the magnetic powder move upward, so that the magnetic powder can be more evenly distributed in the vertical direction, thereby improving the utilization rate of the magnetic powder and the flocculation effect on the pollutants.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a magnetic coagulation and sedimentation integrated device for sewage treatment. Background Art

[0002] The integrated magnetic coagulation and sedimentation equipment (such as the Chinese invention patent with application number CN202011589410.6) is based on the traditional flocculation and sedimentation process, and magnetic seeds are added to the process to make it efficiently co-precipitate with the flocs. The effective combination of magnetic seeds with suspended matter and colloids eventually forms high-density flocs. Relying on the principle of gravity sedimentation, it can achieve rapid flocculation of pollutants, increase the surface load of the sedimentation tank, shorten the hydraulic retention time, and greatly improve the treatment efficiency and effluent water quality. The integrated magnetic coagulation and sedimentation equipment has been applied in the field of sewage treatment.

[0003] However, since the density of magnetic powder is greater than that of water, after the magnetic powder is put into water, it will continue to gather at the lower part of the reaction chamber. Although there is a stirring mechanism, the stirring mechanism can only make the magnetic powder rotate in the horizontal direction and cannot change the downward movement trend of the magnetic powder. Therefore, it will cause the magnetic powder to be unevenly distributed in the longitudinal direction, thereby affecting the flocculation effect of the magnetic powder on the pollutants. Summary of the invention

[0004] In view of this, it is necessary to provide an integrated magnetic coagulation and sedimentation device for sewage treatment to solve the technical problem that in the existing integrated magnetic coagulation and sedimentation equipment, the magnetic powder moves downward under gravity, resulting in uneven distribution of the magnetic powder in the longitudinal direction, affecting the flocculation effect of the magnetic powder on pollutants.

[0005] In order to achieve the above-mentioned object, the present invention provides a magnetic coagulation and precipitation integrated device for sewage treatment, comprising a reaction tank, a dosing mechanism, a magnetic powder adding mechanism, a first stirring mechanism, a second stirring mechanism and a magnetic powder lifting mechanism;

[0006] A plurality of baffles are arranged in the reaction pool to separate the reaction pool into a first reaction chamber and a second reaction chamber which are interconnected;

[0007] The dosing mechanism is used to add flocculant into the first reaction chamber;

[0008] The magnetic powder adding mechanism is used to add magnetic powder into the second reaction chamber;

[0009] The first stirring mechanism includes a first stirring part and a first stirring driving member, wherein the first stirring driving member is connected to the first stirring part and is used to drive the first stirring part to rotate in the first reaction chamber;

[0010] The second stirring mechanism includes a second stirring part and a second stirring driving member, wherein the second stirring driving member is connected to the second stirring part and is used to drive the second stirring part to rotate in the second reaction chamber;

[0011] The magnetic powder lifting mechanism includes a spiral wire, a power supply and a lifting drive component. The spiral wire is wound around the periphery of the second stirring part. The positive and negative poles of the power supply are electrically connected to the two ends of the spiral wire respectively. The lifting drive component is connected to the spiral wire and is used to drive the spiral wire to move up and down.

[0012] In some embodiments, the lifting drive member includes a guide rod and a lifting drive cylinder, the lower end of the guide rod is fixedly connected to the spiral wire, and the lifting drive cylinder is connected to the upper end of the guide rod and is used to drive the guide rod to move up and down.

[0013] In some embodiments, the number of the guide rods is two, and the lifting drive member further includes a cross bar, both ends of the cross bar are respectively fixedly connected to the upper ends of the two guide rods, and the output shaft of the lifting drive cylinder is fixedly connected to the cross bar.

[0014] In some embodiments, the first stirring part includes a first stirring shaft and a first stirring blade, the first stirring shaft is rotatably disposed in the first reaction chamber, the first stirring blade is fixed on the first stirring shaft, and the first stirring driving member is connected to the first stirring shaft and is used to drive the first stirring shaft to rotate.

[0015] In some embodiments, the second stirring part includes a second stirring shaft and a second stirring blade, the second stirring shaft is rotatably disposed in the second reaction chamber, the second stirring blade is fixed on the second stirring shaft, and the second stirring driving member is connected to the second stirring shaft and is used to drive the second stirring shaft to rotate.

[0016] In some embodiments, the integrated magnetic coagulation and sedimentation device for sewage treatment also includes a sedimentation mechanism, which includes a sedimentation tank, a sludge hopper and an overflow pipe. The sedimentation tank is connected to the last of the first reaction chambers. An overflow port is provided at the upper end of the sedimentation tank. The sludge hopper is provided below the sedimentation tank. A first sewage outlet is provided at the lower end of the sludge hopper, and one end of the overflow pipe is connected to the overflow port.

[0017] In some embodiments, the sedimentation mechanism further includes a filter screen, and the filter screen cover is disposed at the overflow outlet.

[0018] In some embodiments, the sedimentation mechanism also includes a plurality of inclined filter plates, each of which is obliquely arranged in the sedimentation tank to form a first sedimentation chamber and a second sedimentation chamber, the first sedimentation chamber is connected to the last of the first reaction chambers, and the second sedimentation chamber is connected to the overflow port.

[0019] In some embodiments, the precipitation mechanism further includes a connecting tube, one end of which is connected to the last of the first reaction chambers, and the other end of which is connected to the first precipitation chamber.

[0020] In some embodiments, the sedimentation mechanism also includes a secondary sedimentation box, which has a secondary sedimentation chamber. A clean water outlet is opened at the upper end of the secondary sedimentation box, the upper end of the overflow pipe is connected to the overflow port, and the lower end of the overflow pipe is connected to the lower end of the secondary sedimentation chamber.

[0021] Compared with the prior art, the technical solution proposed by the present invention has the following beneficial effects: when in use, sewage is introduced into the reaction tank, the sewage passes through the first reaction chamber and the second reaction chamber in sequence, a flocculant is added to the first reaction chamber, a magnetic powder is added to the second reaction chamber, and the first stirring mechanism and the second stirring mechanism are continuously used for stirring, so that the flocculant and the sewage as well as the magnetic powder and the sewage are fully mixed. At the same time, in order to prevent the magnetic powder from gathering at the lower end of the second reaction chamber, the spiral wire is driven to reciprocate up and down by the lifting drive member. When the spiral wire moves upward, the spiral wire is energized, and the direction of the magnetic field inside the spiral wire is from the south pole of the spiral wire to the north pole, so that the magnetic powder moves upward, and the magnetic powder outside the spiral wire is also affected by the magnetic attraction of the spiral wire and moves upward with the spiral wire. When the spiral wire moves downward, the electrical connection between the power supply and the spiral wire is disconnected, and the magnetic powder moves downward under the action of gravity, and then reciprocates in sequence, so that the magnetic powder can be continuously reciprocated up and down while rotating, so that the magnetic powder can be more evenly distributed in the vertical direction, thereby improving the utilization rate of the magnetic powder and the flocculation effect on pollutants. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an embodiment of a magnetic coagulation and sedimentation integrated device for sewage treatment provided by the present invention;

[0023] Figure 2 yes Figure 1 The schematic diagram of the structure after omitting the sedimentation mechanism;

[0024] Figure 3 yes Figure 2 A schematic diagram of the structure of the magnetic powder lifting mechanism;

[0025] Figure 4 yes Figure 1 Structural schematic diagram of the precipitation mechanism in FIG.

[0026] In the figure: 1-reaction tank, 11-baffle, 12-first reaction chamber, 13-second reaction chamber, 2-dosing mechanism, 3-magnetic powder adding mechanism, 4-first stirring mechanism, 41-first stirring part, 411-first stirring shaft, 412-first stirring blade, 5-second stirring mechanism, 51-second stirring part, 511-second stirring shaft, 512-second stirring blade, 6-magnetic powder lifting mechanism, 61-spiral wire, 62-lifting drive member, 621-guide rod, 622-lifting drive cylinder, 623-cross bar, 7-precipitation mechanism, 71-precipitation tank, 711-first precipitation chamber, 712-second precipitation chamber, 72-sludge bucket, 721-first sewage outlet, 73-overflow pipe, 74-filter screen, 75-inclined filter plate, 76-connecting pipe, 77-secondary sedimentation tank, 771-clean water outlet, 772-second sewage outlet. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0028] Please refer to Figure 1-Figure 3 The present invention provides an integrated magnetic coagulation and sedimentation device for sewage treatment, comprising a reaction tank 1, a dosing mechanism 2, a magnetic powder adding mechanism 3, a first stirring mechanism 4, a second stirring mechanism 5 and a magnetic powder lifting mechanism 6.

[0029] A plurality of baffles 11 are disposed in the reaction pool 1 to separate the reaction pool into a first reaction chamber 12 and a second reaction chamber 13 that are interconnected. In this embodiment, there are two first reaction chambers 12 , which are located at both sides of the second reaction chamber 13 .

[0030] The dosing mechanism 2 is used to add flocculants into the first reaction chamber 12. The magnetic powder adding mechanism 3 is used to add magnetic powder into the second reaction chamber 13. The first stirring mechanism 4 includes a first stirring part 41 and a first stirring driving member (not shown), the first stirring driving member is connected to the first stirring part 41, and is used to drive the first stirring part 41 to rotate in the first reaction chamber 12, so that the flocculants and sewage are repeatedly mixed. The second stirring mechanism 5 includes a second stirring part 51 and a second stirring driving member (not shown), the second stirring driving member is connected to the second stirring part 51, and is used to drive the second stirring part 51 to rotate in the second reaction chamber 13, so that the magnetic powder and sewage are fully mixed.

[0031] The magnetic powder lifting mechanism 6 includes a spiral wire 61, a power supply and a lifting drive 62. The spiral wire 61 is wound around the periphery of the second stirring part 51. The positive and negative electrodes of the power supply are electrically connected to the two ends of the spiral wire 61 respectively. The lifting drive 62 is connected to the spiral wire 61 and is used to drive the spiral wire 61 to move up and down. When the spiral wire 61 moves upward, the power supply is electrically connected to the spiral wire 61. When the spiral wire 61 moves downward, the power supply is electrically disconnected from the spiral wire 61. It should be understood that a resistor, an ammeter, etc. are also connected in series between the spiral wire 61 and the power supply, and the surface of the spiral wire 61 is covered with an insulating layer to prevent short circuit.

[0032] When in use, sewage is introduced into the reaction tank 1, and the sewage passes through the first reaction chamber 12 and the second reaction chamber 13 in sequence. Flocculant is added to the first reaction chamber 12, and magnetic powder is added to the second reaction chamber 13. The first stirring mechanism 4 and the second stirring mechanism 5 are continuously stirred to fully mix the flocculant and sewage as well as the magnetic powder and sewage. At the same time, in order to prevent the magnetic powder from gathering at the lower end of the second reaction chamber 13, the spiral wire 61 is driven to reciprocate up and down by the lifting drive member 62. When the spiral wire 61 moves upward, the spiral wire 61 is energized. The direction of the magnetic field inside the wire 61 is from the south pole of the spiral wire 61 to the north pole, so that the magnetic powder moves upward, and the magnetic powder outside the spiral wire 61 will also be affected by the magnetic attraction of the spiral wire 61 and move upward with the spiral wire 61. When the spiral wire 61 moves downward, the electrical connection between the power supply and the spiral wire 61 is disconnected, and the magnetic powder moves downward under the action of gravity, and then reciprocates in sequence, so that the magnetic powder can continuously reciprocate up and down while rotating, which can make the magnetic powder more evenly distributed in the vertical direction, thereby improving the utilization rate of the magnetic powder and the flocculation effect on pollutants.

[0033] In a specific implementation, the spiral conductor 61 can be a single spiral with a larger radius, or it can be a plurality of spirals with smaller radius arranged side by side. The magnetic field strength generated by the spiral conductor 61 should be controlled at an appropriate value, with the magnetic attraction to the magnetic powder being slightly greater than the weight of the magnetic powder. In this way, when the surface of the magnetic powder is coated with contaminants, the weight increases and it will move downward, thereby selectively lifting the magnetic powder that has not been adsorbed or has a small amount of adsorbed contaminants, while the magnetic powder that has been adsorbed with contaminants will settle under the action of gravity and enter the subsequent process.

[0034] By adopting the technical solution provided by the present invention, the magnetic powder is lifted by magnetic attraction, so that the magnetic powder can be selectively lifted without lifting pollutants, which is conducive to the sedimentation of pollutants and entering the subsequent process.

[0035] In order to realize the function of the lifting drive member 62, please refer to Figure 2 and Figure 3In a preferred embodiment, the lifting drive member 62 includes a guide rod 621 and a lifting drive cylinder 622, the lower end of the guide rod 621 is fixedly connected to the spiral wire 61, and the lifting drive cylinder 622 is connected to the upper end of the guide rod 621 and is used to drive the guide rod 621 to move up and down.

[0036] To provide lifting stability, please refer to Figure 2 and Figure 3 In a preferred embodiment, the number of the guide rods 621 is two, and the lifting drive member 62 also includes a cross bar 623, the two ends of the cross bar 623 are respectively fixedly connected to the upper ends of the two guide rods 621, and the output shaft of the lifting drive cylinder 622 is fixedly connected to the cross bar 623.

[0037] In order to realize the function of the first stirring part 41, please refer to Figure 1 and Figure 2 In a preferred embodiment, the first stirring part 41 includes a first stirring shaft 411 and a first stirring blade 412, the first stirring shaft 411 is rotatably disposed in the first reaction chamber 12, the first stirring blade 412 is fixed on the first stirring shaft 411, and the first stirring driving member is connected to the first stirring shaft 411 and is used to drive the first stirring shaft 411 to rotate.

[0038] In order to realize the function of the second stirring part 51, please refer to Figure 1-Figure 3 In a preferred embodiment, the second stirring portion 51 includes a second stirring shaft 511 and a second stirring blade 512, the second stirring shaft 511 is rotatably disposed in the second reaction chamber 13, the second stirring blade 512 is fixed on the second stirring 511, and the second stirring driving member is connected to the second stirring shaft 511 and is used to drive the second stirring shaft 511 to rotate.

[0039] For the treatment of flocculated sludge and magnetic particles, please refer to Figure 1 and Figure 4In a preferred embodiment, the magnetic coagulation and sedimentation integrated device for sewage treatment also includes a sedimentation mechanism 7, which includes a sedimentation tank 71, a sludge hopper 72 and an overflow pipe 73. The sedimentation tank 71 is connected to the last (with the movement direction of the sewage as a reference) first reaction chamber 12, and an overflow port is provided at the upper end of the sedimentation tank 71. The sludge hopper 72 is provided below the sedimentation tank 71. A first sewage outlet 721 is provided at the lower end of the sludge hopper 72. One end of the overflow pipe 73 is connected to the overflow port. When in use, the flocculated sludge and magnetic powder settle downward and gather in the sludge hopper 72, and the clean water is discharged from the overflow pipe 73. The first sewage outlet 721 is opened regularly, and the sludge and magnetic powder are sucked out by a sewage suction pump, and then the sludge is separated from the magnetic powder by an existing high-speed shearing machine and a magnetic powder separator. The sludge is collected and further processed, and the magnetic powder is recycled and put into the second reaction chamber 13 again.

[0040] To provide filtering effects, please refer to Figure 1 and Figure 4 In a preferred embodiment, the sedimentation mechanism 7 further includes a filter screen 74, and the filter screen 74 is covered at the overflow outlet to prevent sludge from being discharged from the overflow outlet.

[0041] To further improve the filtering effect, please refer to Figure 1 and Figure 4 In a preferred embodiment, the sedimentation mechanism 7 also includes a plurality of inclined filter plates 75, each of which is obliquely arranged in the sedimentation tank 71 to form a first sedimentation chamber 711 and a second sedimentation chamber 712. The first sedimentation chamber 711 is connected to the last first reaction chamber 12, and the second sedimentation chamber 712 is connected to the overflow port, thereby further preventing the sludge from moving upward.

[0042] In order to realize the connection between the first precipitation chamber and the last first reaction chamber 12, please refer to Figure 1 and Figure 4 In a preferred embodiment, the precipitation mechanism 7 further includes a connecting tube 76 , one end of which is connected to the last first reaction chamber 12 , and the other end of which is connected to the first precipitation chamber 711 .

[0043] To improve the quality of purified water, please refer to Figure 1 and Figure 4In a preferred embodiment, the sedimentation mechanism 7 also includes a secondary sedimentation tank 77, the secondary sedimentation tank 77 has a secondary sedimentation chamber, the upper end of the secondary sedimentation tank 77 is provided with a clean water outlet 771, the upper end of the overflow pipe 73 is connected to the overflow port, and the lower end of the overflow pipe 73 is connected to the lower end of the secondary sedimentation chamber, so that the water overflowing from the sedimentation tank 71 will settle again in the secondary sedimentation tank 77, and the supernatant will be discharged from the clean water outlet 771, thereby improving the quality of the clean water, and the lower end of the secondary sedimentation tank 77 is provided with a second sewage outlet 772, so that the sludge at the bottom of the secondary sedimentation tank 77 can be cleaned regularly.

[0044] In order to better understand the present invention, the following Figure 1-Figure 4 The working process of the integrated magnetic coagulation and sedimentation device for sewage treatment provided by the present invention is described in detail: when in use, sewage is introduced into the reaction tank 1, and the sewage passes through the first reaction chamber 12 and the second reaction chamber 13 in sequence, a flocculant is added to the first reaction chamber 12, and magnetic powder is added to the second reaction chamber 13, and the first stirring mechanism 4 and the second stirring mechanism 5 are continuously used for stirring, so that the flocculant and sewage as well as the magnetic powder and sewage are fully mixed. At the same time, in order to prevent the magnetic powder from gathering at the lower end of the second reaction chamber 13, the spiral wire 61 is driven to reciprocate up and down by the lifting drive member 62. When the spiral wire 61 When moving upward, the spiral wire 61 is energized, and the direction of the magnetic field inside the spiral wire 61 is from the south pole of the spiral wire 61 to the north pole, so that the magnetic powder moves upward, and the magnetic powder outside the spiral wire 61 is also affected by the magnetic attraction of the spiral wire 61 and moves upward with the spiral wire 61. When the spiral wire 61 moves downward, the electrical connection between the power supply and the spiral wire 61 is disconnected, and the magnetic powder moves downward under the action of gravity, and then reciprocates in sequence, so that the magnetic powder can be continuously reciprocated up and down while rotating, so that the magnetic powder can be more evenly distributed in the vertical direction, improving the utilization rate of the magnetic powder and the flocculation effect on pollutants. The flocculated sludge and magnetic powder settle downward and gather in the sludge bucket 72, and the clean water is discharged from the overflow pipe 73. The first sewage outlet 721 is opened regularly, and the sludge and magnetic powder are sucked out by the sewage suction pump, and then the sludge and magnetic powder are separated by the existing high-speed shearing machine and magnetic powder separator. The sludge is collected and further processed, and the magnetic powder is recycled and put into the second reaction chamber 13 again.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A magnetic coagulation and sedimentation integrated device for sewage treatment, characterized in that: It includes a reaction tank, a drug adding mechanism, a magnetic powder adding mechanism, a first stirring mechanism, a second stirring mechanism and a magnetic powder lifting mechanism; A plurality of baffles are arranged in the reaction pool to separate the reaction pool into a first reaction chamber and a second reaction chamber which are interconnected; The dosing mechanism is used to add flocculant into the first reaction chamber; The magnetic powder adding mechanism is used to add magnetic powder into the second reaction chamber; The first stirring mechanism includes a first stirring part and a first stirring driving member, wherein the first stirring driving member is connected to the first stirring part and is used to drive the first stirring part to rotate in the first reaction chamber; The second stirring mechanism includes a second stirring part and a second stirring driving member, wherein the second stirring driving member is connected to the second stirring part and is used to drive the second stirring part to rotate in the second reaction chamber; The magnetic powder lifting mechanism includes a spiral wire, a power supply and a lifting drive. The spiral wire is wound around the periphery of the second stirring part. The positive and negative poles of the power supply are electrically connected to the two ends of the spiral wire respectively. The lifting drive is connected to the spiral wire and is used to drive the spiral wire to move up and down. The spiral wire is driven to reciprocate up and down by the lifting drive. When the spiral wire moves upward, the spiral wire is energized, and the direction of the magnetic field inside the spiral wire is from the south pole of the spiral wire to the north pole, so that the magnetic powder moves upward. The magnetic powder outside the spiral wire will also be affected by the magnetic attraction of the spiral wire and move upward with the spiral wire. When the spiral wire moves downward, the electrical connection between the power supply and the spiral wire is disconnected, and the magnetic powder moves downward under the action of gravity, reciprocating in sequence.

2. The integrated magnetic coagulation and sedimentation device for sewage treatment according to claim 1, characterized in that: The lifting drive member includes a guide rod and a lifting drive cylinder. The lower end of the guide rod is fixedly connected to the spiral wire. The lifting drive cylinder is connected to the upper end of the guide rod and is used to drive the guide rod to move up and down.

3. The integrated magnetic coagulation and sedimentation device for sewage treatment according to claim 2, characterized in that: The number of the guide rods is two, and the lifting drive member further includes a cross bar, the two ends of the cross bar are respectively fixedly connected to the upper ends of the two guide rods, and the output shaft of the lifting drive cylinder is fixedly connected to the cross bar.

4. The integrated magnetic coagulation and sedimentation device for sewage treatment according to claim 1, characterized in that: The first stirring part includes a first stirring shaft and a first stirring blade. The first stirring shaft is rotatably disposed in the first reaction chamber. The first stirring blade is fixed on the first stirring shaft. The first stirring driving member is connected to the first stirring shaft and is used to drive the first stirring shaft to rotate.

5. The integrated magnetic coagulation and sedimentation device for sewage treatment according to claim 1, characterized in that: The second stirring part includes a second stirring shaft and a second stirring blade. The second stirring shaft is rotatably disposed in the second reaction chamber. The second stirring blade is fixed on the second stirring shaft. The second stirring driving member is connected to the second stirring shaft and is used to drive the second stirring shaft to rotate.

6. The integrated magnetic coagulation and sedimentation device for sewage treatment according to claim 1, characterized in that: It also includes a sedimentation mechanism, which includes a sedimentation tank, a sludge hopper and an overflow pipe. The sedimentation tank is connected to the last of the first reaction chambers. An overflow port is provided at the upper end of the sedimentation tank. The sludge hopper is provided below the sedimentation tank. A first sewage outlet is provided at the lower end of the sludge hopper. One end of the overflow pipe is connected to the overflow port.

7. The integrated magnetic coagulation and sedimentation device for sewage treatment according to claim 6, characterized in that: The sedimentation mechanism further comprises a filter screen, and the filter screen cover is arranged at the overflow port.

8. The integrated magnetic coagulation and sedimentation device for sewage treatment according to claim 6, characterized in that: The sedimentation mechanism also includes a plurality of inclined filter plates, each of which is tiltedly arranged in the sedimentation tank to form a first sedimentation chamber and a second sedimentation chamber. The first sedimentation chamber is connected to the last of the first reaction chambers, and the second sedimentation chamber is connected to the overflow port.

9. The integrated magnetic coagulation and sedimentation device for sewage treatment according to claim 8, characterized in that: The precipitation mechanism further includes a connecting tube, one end of which is connected to the last first reaction chamber, and the other end of which is connected to the first precipitation chamber.

10. The integrated magnetic coagulation and sedimentation device for sewage treatment according to claim 6, characterized in that: The sedimentation mechanism also includes a secondary sedimentation box, which has a secondary sedimentation cavity. A clean water outlet is opened at the upper end of the secondary sedimentation box, the upper end of the overflow pipe is connected to the overflow port, and the lower end of the overflow pipe is connected to the lower end of the secondary sedimentation cavity.

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