Vertical flow magnetic coagulation sedimentation tank

Abstract

The utility model discloses a vertical flow magnetic coagulation sedimentation tank which comprises a sedimentation tank and a magnetic mixing tank, the magnetic mixing tank is connected with the sedimentation tank through a water inlet pipe, the sedimentation tank is vertically mounted, a spherical bottom bin is arranged at the bottom of the sedimentation tank, a magnetic ring is arranged on the outer edge of the spherical bottom bin, and the magnetic ring is configured to swing around the peripheral wall of the spherical bottom bin; the device further comprises a sludge discharge pipe, the sludge discharge pipe has two installation modes, one mode is that the sludge discharge pipe is installed in the sedimentation tank and arranged in the vertical direction of the sedimentation tank, and the bottom of the sludge discharge pipe is located in the middle of the spherical bottom bin; and the bottom of the spherical bottom bin is provided with a valve which is connected with a sludge discharge pipe. Magnetic coagulation and vertical flow sedimentation are combined, the magnetic mixing tank is used for fully mixing and stirring magnetic powder and flocculation drugs with sewage, and the sedimentation tank is of a vertical flow sedimentation tank structure and is used for sedimentation. As the sediment of the sewage added with the magnetic powder becomes heavy, the bottom of the sedimentation tank is designed to be spherical, and the pressure is uniform.

Description

Technical Field

[0001] The utility model relates to the field of wastewater treatment technology, specifically a vertical flow magnetic coagulation sedimentation tank. Background Technology

[0002] Magnetic coagulation sedimentation is currently a common method for treating urban sewage. It involves introducing magnetic microparticles into a high-efficiency flocculation sedimentation tank water purification process. Through flocculation, attraction and adsorption, charge adsorption, bridging, and netting, insoluble pollutants such as algae, tiny suspended solids, colloids, and bacteria in the water are effectively combined with the magnetic microparticles to form magnetic flocs with larger volume and density, thereby enhancing the flocculation effect. The flocs settle quickly, resulting in excellent water purification.

[0003] Existing magnetic coagulation sedimentation processes consist of several tanks connected horizontally in series, requiring a large floor space. While this isn't necessarily a drawback in large-scale water treatment plants, it's inconvenient to implement in the pretreatment process of a single factory site. Currently, pretreatment in single-site plants (or small to medium-sized water treatment plants) typically uses vertical flow sedimentation tanks, which are suitable for applications with low flow rates. Therefore, combining these two processes is feasible. Utility Model Content

[0004] The purpose of this invention is to provide a vertical flow magnetic coagulation sedimentation tank to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a vertical flow magnetic coagulation sedimentation tank, comprising a sedimentation tank and a magnetic mixing tank, wherein the magnetic mixing tank and the sedimentation tank are connected by an inlet pipe, the sedimentation tank is installed vertically, and a spherical bottom chamber is provided at the bottom of the sedimentation tank, wherein a magnetic ring is provided on the outer edge of the spherical bottom chamber, and the magnetic ring is configured to swing around the outer peripheral wall of the spherical bottom chamber.

[0006] It also includes a sludge discharge pipe, which has two installation methods. One is to install it inside the sedimentation tank, with the sludge discharge pipe set vertically along the sedimentation tank and the bottom of the sludge discharge pipe located in the middle of the spherical bottom chamber.

[0007] Secondly, it is installed at the bottom of the spherical silo, and a valve is installed at the bottom of the spherical silo to connect with the sludge discharge pipe.

[0008] Preferably, a central pipe is provided at the upper center of the sedimentation tank, and the output end of the inlet pipe is located inside the central pipe.

[0009] Preferably, the lower part of the central tube has a flared section with a diameter that increases from top to bottom, and a reflector is provided at the bottom of the central tube.

[0010] Preferably, two magnetic rings are symmetrically installed, and a charged coil structure is provided on the inner side of the magnetic ring to generate a magnetic field.

[0011] Preferably, a crank is installed at the end of the magnetic ring, the crank is rotatably connected to the outer peripheral wall of the spherical bottom chamber, a connecting rod is hinged to one end of the crank, and a drive arm is hinged to the other end of the connecting rod, the drive arm being driven by a motor.

[0012] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention combines magnetic coagulation and vertical flow sedimentation, and designs a magnetic mixing tank and a sedimentation tank. The magnetic mixing tank is used to thoroughly mix and stir magnetic powder and flocculants with wastewater, while the sedimentation tank adopts the structure of a vertical flow sedimentation tank for sedimentation. Since the wastewater containing magnetic powder will have heavier sediment at the bottom, the bottom of the sedimentation tank is designed in a spherical shape to uniformly distribute the pressure. In addition, to prevent the sludge inside the spherical bottom from adhering to the inner wall, a movable magnetic ring structure is designed, which allows the sludge to maintain a slight turbulence through changes in the magnetic field. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the magnetic ring mounting structure of this utility model. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1-2 As shown, this utility model provides a technical solution: including a sedimentation tank 9 and a magnetic mixing tank 8, the magnetic mixing tank 8 and the sedimentation tank 9 are connected by a water inlet pipe 3, the sedimentation tank 9 is installed vertically, and a spherical bottom chamber 6 is provided at the bottom of the sedimentation tank 9.

[0017] A central pipe 2 is installed at the upper center of the sedimentation tank 9, and the output end of the inlet pipe 3 is located inside the central pipe 2. The lower part of the central pipe 2 has a flared section 4 with a diameter that increases from top to bottom, and a reflector plate 5 is installed at the bottom of the central pipe 2.

[0018] A magnetic ring 7 is provided on the outer edge of the spherical bottom chamber 6, and the magnetic ring 7 is configured to swing around the outer peripheral wall of the spherical bottom chamber 6;

[0019] Two magnetic rings 7 are symmetrically installed. A charged coil structure is located on the inner side of each magnetic ring 7 to generate a magnetic field. A crank is mounted at one end of each magnetic ring 7, and the crank is rotatably connected to the outer peripheral wall of the spherical chamber 6. A connecting rod 72 is hinged to one end of the crank, and a drive arm 73 is hinged to the other end of the connecting rod 72. The drive arm 73 is driven by a motor. A motor drives the drive arm 73 to rotate, which, via the connecting rod 72, causes the magnetic ring 7 mounted on the crank 71 to swing around the central axis connecting the crank 71 and the spherical chamber 6.

[0020] It also includes a sludge discharge pipe 1, which has two installation methods. One is to install it inside the sedimentation tank 9. The sludge discharge pipe 1 is set vertically along the sedimentation tank 1, and the bottom of the sludge discharge pipe 1 is located in the middle of the spherical bottom chamber 6.

[0021] Secondly, it is installed at the bottom of the spherical hopper 6, and a valve is installed at the bottom of the spherical hopper 6 to connect with the sludge discharge pipe 1.

[0022] Working Principle: Wastewater first enters the magnetic mixing tank 8, which is equipped with a stirrer. Magnetic powder and flocculant are added, and after stirring, the wastewater enters the central pipe 2 through the inlet pipe 3, with the outlet end of the inlet pipe 3 facing upwards. Under gravity, it falls onto the reflector plate 5. Because the specific gravity of the magnetically powdered coagulant is different from that of water, the separation effect is excellent. The coagulated flocs, gravel, and sludge can quickly settle and separate. However, some high-density, high-concentration sludge settles even faster and tends to accumulate at the bottom, easily becoming sticky and difficult to separate from the inner wall. Therefore, the oscillation of the magnetic ring causes friction between the magnetically powdered flocs and the sludge, achieving a slight surging. Furthermore, due to the spherical bottom, the sediment concentrates towards the center, preventing adhesion. It can be easily discharged through the built-in sludge suction pipe or the centrally located pipe. In practical applications, the magnetic field strength can be adjusted by changing the magnetic ring current or the number of coil turns, and better results can be achieved through multiple experiments. In addition, during operation, only the magnetic ring needs to be used initially. After the sludge is discharged normally for a period of time (one to two hours), the magnetic ring can be turned off, and the entire system can operate stably.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vertical flow magnetic coagulation sedimentation tank, characterized in that: It includes a sedimentation tank (9) and a magnetic mixing tank (8). The magnetic mixing tank (8) and the sedimentation tank (9) are connected by an inlet pipe (3). The sedimentation tank (9) is installed vertically. A spherical bottom chamber (6) is provided at the bottom of the sedimentation tank (9). A magnetic ring (7) is provided on the outer edge of the spherical bottom chamber (6). The magnetic ring (7) is configured to swing around the outer wall of the spherical bottom chamber (6). It also includes a sludge discharge pipe (1), which has two installation methods. One is to install it inside the sedimentation tank (9). The sludge discharge pipe (1) is set vertically along the sedimentation tank (9), and the bottom of the sludge discharge pipe (1) is located in the middle of the spherical bottom chamber (6). Secondly, it is installed at the bottom of the spherical silo (6), and the bottom of the spherical silo (6) is equipped with a valve connected to the sludge discharge pipe (1).

2. The vertical flow magnetic coagulation sedimentation tank according to claim 1, characterized in that: A central pipe (2) is installed at the upper center of the sedimentation tank (9), and the output end of the inlet pipe (3) is located inside the central pipe (2).

3. A vertical flow magnetic coagulation sedimentation tank according to claim 2, characterized in that: The lower part of the central tube (2) has a flared section (4) with a diameter that increases from top to bottom, and a reflector (5) is provided at the bottom of the central tube (2).

4. The vertical flow magnetic coagulation sedimentation tank according to claim 1, characterized in that: Two magnetic rings (7) are symmetrically installed. The inner side of the magnetic rings (7) is provided with a charged coil structure to generate a magnetic field.

5. A vertical flow magnetic coagulation sedimentation tank according to claim 4, characterized in that: A crank (71) is installed at the end of the magnetic ring (7). The crank (71) is rotatably connected to the outer peripheral wall of the spherical bottom chamber (6). A connecting rod (72) is hinged to one end of the crank, and a drive arm (73) is hinged to the other end of the connecting rod (72). The drive arm (73) is driven by a motor.

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