Electronic flocculation treatment device for coal-containing wastewater

Abstract

The utility model relates to the field of sewage treatment, in particular to an electronic flocculation treatment device for coal-containing wastewater, which comprises an electric flocculation box, and a water inlet and a water outlet are respectively arranged at two ends of the top of the electric flocculation box; an electrode plate group is arranged in the electric flocculation box, the electrode plate group is connected with the inner wall of the electric flocculation box through an electrode plate group fixing frame, and electrode plate flushing devices are arranged above and below the electrode plate group; a sewage storage hopper is arranged at the bottom of the electric flocculation box, a sewage outlet is formed in the bottom of the sewage storage hopper, and sewage hopper flushing devices are arranged on the two sides of the sewage storage hopper. The sewage storage hopper at the bottom can play a certain role in storing and buffering sludge, normal electrolysis of the polar plate is prevented from being affected by sludge deposition, meanwhile, flushing devices are arranged on the two sides of the sewage storage hopper and can flush the inner wall of the sewage storage hopper, in addition, high-pressure water flushing devices are arranged above and below the polar plate, the polar plate is cleaned regularly, and the working efficiency is improved. And normal electrolysis of the polar plate is ensured.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, and in particular to an electronic flocculation treatment device for coal-containing wastewater. Background Technology

[0002] Coal-fired power plants require large amounts of flushing water for their coal conveying systems, trestle bridges, ground surfaces, dust suppression systems at the heads of coal conveyor belts, and dust collectors, resulting in significant amounts of coal-containing wastewater. Currently, the treatment of this wastewater utilizes electrocoagulation technology. This involves selecting appropriate metal electrodes; after energizing, the soluble anode (usually an iron or aluminum anode) dissolves, producing Fe²⁺ and Al³⁺ ions that combine with OH⁻ in the solution to form highly active flocculant groups, which then participate in the flocculation reaction as flocculants.

[0003] However, after a period of operation, conventional electrocoagulation devices often accumulate a large amount of impurities on the surface of the electrocoagulation plates, which prevents the formation of flocculants and thus fails to achieve electrocoagulation. Furthermore, after settling, the flocs tend to accumulate in the lower part of the electrocoagulation box, easily forming stubborn adhesions. The drain outlet cannot settle and discharge these stubbornly attached flocs. Utility Model Content

[0004] Based on the above problems, the purpose of this utility model is to provide an electronic flocculation treatment device for coal-containing wastewater. This utility model adopts the following technical solution:

[0005] This utility model provides an electronic flocculation treatment device for coal-containing wastewater, including an electrocoagulation tank. An inlet and an outlet are respectively provided at both ends of the top of the electrocoagulation tank. An electrode plate assembly is provided inside the electrocoagulation tank, and the electrode plate assembly is connected to the inner wall of the electrocoagulation tank via an electrode plate assembly fixing frame. Electrode plate flushing devices are provided above and below the electrode plate assembly. A sludge storage hopper is provided at the bottom of the electrocoagulation tank, and a sludge discharge port is provided at the bottom of the sludge storage hopper. Sludge hopper flushing devices are provided on both sides of the sludge storage hopper.

[0006] Preferably, the electrode plate assembly includes a cathode plate and an anode plate arranged at intervals between each other.

[0007] Preferably, the electrode assembly fixing frame includes an upper support and a lower support, with a plurality of electrode slots arranged correspondingly on the opposite surfaces of the upper and lower supports. The cathode plate and the anode plate are snapped into the electrode slots. The upper and lower supports are connected by a plurality of connecting rod assemblies. Support legs are fixed to the top of the upper support and the bottom of the lower support. The support legs are connected to support plates by bolt assemblies. The support plates are fixed to the inner wall of the electrocoagulation box.

[0008] Preferably, the electrode flushing device includes an electrode flushing pipe arranged between the cathode plate and the anode plate, and the electrode flushing pipe is provided with a plurality of high-pressure nozzles. Each electrode flushing pipe is connected to an electrode flushing water supply pipe located outside the electrocoagulation box.

[0009] Preferably, the electrocoagulation box includes a shell and end caps disposed at both ends of the shell.

[0010] Preferably, the sludge hopper flushing device includes sludge hopper flushing pipes arranged sequentially on the side wall of the sludge hopper, with the outlet end of the sludge hopper flushing pipe facing the inner side wall of the sludge hopper, and the inlet end of the sludge hopper flushing pipe connected to the sludge hopper flushing water supply pipe.

[0011] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0012] The sludge storage hopper at the bottom of this invention can serve as a buffer for sludge storage, preventing sludge deposition from affecting the normal electrolysis of the electrode plates. At the same time, flushing devices are provided on both sides of the sludge storage hopper to flush the inner wall of the sludge storage hopper. In addition, high-pressure water flushing devices are arranged above and below the electrode plates to clean the electrode plates regularly and ensure the normal electrolysis of the electrode plates. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the main structure of the electronic flocculation treatment device for coal-containing wastewater of this utility model;

[0015] Figure 2 This is a side view of the electronic flocculation treatment device for coal-containing wastewater according to this utility model.

[0016] Figure 3 for Figure 2 Enlarged view of a section at point A

[0017] Figure 4 This is a top view schematic diagram of the electronic flocculation treatment device for coal-containing wastewater according to this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Electrocoagulation box; 101. Shell; 102. End cap; 2. Inlet; 3. Outlet; 4. Electrode plate assembly; 5. Electrode plate assembly fixing frame; 501. Upper support; 502. Lower support; 503. Electrode plate groove; 504. Connecting rod assembly; 505. Support leg; 506. Support plate; 6. Electrode plate flushing device; 601. Electrode plate flushing pipe; 602. High-pressure nozzle; 603. Electrode plate flushing water supply pipe; 7. Sludge hopper; 8. Sludge outlet; 9. Sludge hopper flushing device; 901. Sludge hopper flushing pipe; 902. Sludge hopper flushing water supply pipe. Detailed Implementation

[0019] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figures 1 to 4 As shown in the figure, this embodiment discloses an electronic flocculation treatment device for coal-containing wastewater, including an electrocoagulation box 1. The top of the electrocoagulation box 1 is provided with an inlet 2 and an outlet 3 at both ends. An electrode plate assembly 4 is arranged in the electrocoagulation box 1, wherein the electrode plate assembly 4 is arranged along the length direction of the electrocoagulation box 1 and is located between the inlet 2 and the outlet 3. The electrode plate assembly 4 is connected to the inner wall of the electrocoagulation box 1 through an electrode plate assembly fixing frame 5. An electrode plate flushing device 6 is provided above and below the electrode plate assembly 4. A sludge storage hopper 7 is provided at the bottom of the electrocoagulation box 1. A sludge discharge port 8 is provided at the bottom of the sludge storage hopper 7. Sludge hopper flushing devices 9 are provided on both sides of the sludge storage hopper 7.

[0021] The electrode plate assembly 4 includes cathode plates and anode plates arranged at intervals. The cathode plates are electrically connected together, and the anode plates are electrically connected together. The wires connecting the cathode and anode plates are connected to an external power source through terminals arranged on the electrocoagulation box 1.

[0022] In this embodiment, the electrocoagulation box 1 includes a shell 101 and end caps 102 disposed at both ends of the shell 101. The end caps 102 are fixed to the shell 101 by bolt assemblies. The inlet 2, the outlet 3, and the sludge storage hopper 7 are all connected to the shell 101. At the same time, an exhaust port is also provided on the shell 101.

[0023] In this embodiment, the electrode assembly fixing frame 5 includes an upper support 501 and a lower support 502. Several electrode slots 503 are arranged correspondingly on the opposite surfaces of the upper support 501 and the lower support 502. The cathode plate and the anode plate are snapped into the electrode slots 503. The upper support 501 and the lower support 502 are connected by multiple connecting rod assemblies 504. Support legs 505 are fixed to the top of the upper support 501 and the bottom of the lower support 502. The support legs 505 are connected to the support plate 506 by bolt assemblies. The support plate 506 is welded to the inner wall of the electrocoagulation box 1.

[0024] In this embodiment, the electrode flushing device 6 includes an electrode flushing pipe 601 arranged between the cathode plate and the anode plate. Several high-pressure nozzles 602 are provided on the electrode flushing pipe 601. Each electrode flushing pipe 601 is connected to an electrode flushing water supply pipe 603 located outside the electrocoagulation box 1. That is, each electrode flushing pipe 601 passes through a cap 102 at one end and is connected to the electrode flushing water supply pipe 603.

[0025] In this embodiment, the sludge hopper flushing device 9 includes a sludge hopper flushing pipe 901 that is fixed sequentially on the side wall of the sludge hopper 7. The water outlet of the sludge hopper flushing pipe 901 faces the inner side wall of the sludge hopper 7, and the water inlet of the sludge hopper flushing pipe 901 is connected to the sludge hopper flushing water supply pipe 902.

[0026] The working principle of this utility model is as follows: When the inside of the electronic flocculation treatment device needs to be cleaned, the inlet 2 and outlet 3 are in the closed state. The cathode plate and anode plate are rinsed by the high-pressure nozzles 602 arranged above and below the electrode plate group 4. At the same time, the outlet of the sludge hopper flushing pipe 901 faces the inner wall of the sludge hopper 7. The stubborn flocs attached to the inner wall of the sludge hopper 7 are rinsed by the high-pressure water flow. The wastewater after aeration is discharged through the drain outlet 8.

[0027] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An electro-flocculation treatment device for coal-containing wastewater, comprising an electro-flocculation tank (1), characterized in that: The top of the electrocoagulation box (1) is provided with an inlet (2) and an outlet (3) at both ends; an electrode plate assembly (4) is provided in the electrocoagulation box (1), the electrode plate assembly (4) is connected to the inner wall of the electrocoagulation box (1) through an electrode plate assembly fixing frame (5), and an electrode plate flushing device (6) is provided above and below the electrode plate assembly (4); a sludge storage hopper (7) is provided at the bottom of the electrocoagulation box (1), a sludge discharge port (8) is provided at the bottom of the sludge storage hopper (7), and a sludge hopper flushing device (9) is provided on both sides of the sludge storage hopper (7).

2. The coal-containing wastewater electronic flocculation treatment device according to claim 1, characterized in that: The electrode plate group (4) includes a cathode plate and an anode plate arranged at intervals between each other.

3. The coal-containing wastewater electronic flocculation treatment device according to claim 2, characterized in that: The electrode assembly fixing frame (5) includes an upper support (501) and a lower support (502). Several electrode slots (503) are arranged correspondingly on the opposite surfaces of the upper support (501) and the lower support (502). The cathode plate and the anode plate are snapped into the electrode slots (503). The upper support (501) and the lower support (502) are connected by multiple connecting rod assemblies (504). The top of the upper support (501) and the bottom of the lower support (502) are both fixed with support feet (505). The support feet (505) are connected to the support plate (506) by bolt assemblies. The support plate (506) is fixed on the inner wall of the electrocoagulation box (1).

4. The electronic flocculation treatment device for coal-containing wastewater according to claim 2, characterized in that: The electrode flushing device (6) includes an electrode flushing pipe (601) arranged between the cathode plate and the anode plate. The electrode flushing pipe (601) is provided with a plurality of high-pressure nozzles (602). Each electrode flushing pipe (601) is connected to an electrode flushing water supply pipe (603) located outside the electrocoagulation box (1).

5. The electronic flocculation treatment device for coal-containing wastewater according to claim 1, characterized in that: The electrocoagulation box (1) includes a shell (101) and end caps (102) disposed at both ends of the shell (101).

6. The electronic flocculation treatment device for coal-containing wastewater according to claim 1, characterized in that: The sludge hopper flushing device (9) includes sludge hopper flushing pipes (901) arranged sequentially on the side wall of the sludge hopper (7). The outlet end of the sludge hopper flushing pipe (901) faces the inner side wall of the sludge hopper (7), and the inlet end of the sludge hopper flushing pipe (901) is connected to the sludge hopper flushing water supply pipe (902).

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