High-density sedimentation tank reaction device with electrochemical algae removal function

Abstract

The utility model relates to the technical field of municipal engineering, and provides a high-density sedimentation tank reaction device with an electrochemical algae removal function, which comprises a guide cylinder, a stirrer, a feeding pipe, a water inlet, a water outlet, an anode plate and a cathode plate, a driving motor of the stirrer is located at the top of a flocculation reaction area of the high-density sedimentation tank, an impeller of the stirrer is located in the guide cylinder, the feeding pipe is communicated with the side wall of the guide cylinder, the water inlet is communicated with the bottom of the guide cylinder, and the water outlet is communicated with the side wall of the flocculation reaction area of the high-density sedimentation tank; and the anode plates and the cathode plates are arranged in parallel in pairs. The device can realize an electrochemical algae removal function, and can greatly improve the treatment period and the treatment efficiency of algae in a water body.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal engineering, in particular to a high-density sedimentation tank reaction device with an electrochemical algae removal function, which can be applied to the protection of aquatic ecological environment. Background Art

[0002] With the development of social economy, the water ecological environment has also been polluted to varying degrees. For example, the pollution of lakes and rivers has become increasingly serious, and the eutrophication of water bodies has deepened, leading to excessive growth of algae in the water bodies.

[0003] Algae at certain concentrations can cause odor in water, and the release of algae metabolites and algal toxins can cause serious water pollution. Currently, conventional sedimentation tanks use processes such as coagulation, sedimentation, and filtration to treat high-concentration algae-containing water. However, due to the difficulty in coagulating algae-containing water and forming good flocs, algae removal in the sedimentation tank is difficult. Consequently, the algae treatment process suffers from long treatment cycles and low efficiency.

[0004] In view of this, overcoming the defects of the prior art is an urgent problem to be solved in this technical field. Utility Model Content

[0005] The utility model provides a solution to the technical problems of long processing cycle and low processing efficiency in the traditional algae processing process.

[0006] In order to solve the above technical problems, the utility model provides a high-density sedimentation tank reaction device with electrochemical algae removal function, comprising:

[0007] The draft tube 1 is located at the bottom of the flocculation reaction zone 8 of the high-density sedimentation tank;

[0008] Agitator 2, the driving motor 21 of the agitator 2 is located at the top of the flocculation reaction zone 8 of the high-density sedimentation tank, and the impeller 22 of the agitator 2 is located inside the guide tube 1;

[0009] Dosing pipe 3, which is connected to the side wall of the guide tube 1;

[0010] The water inlet 6 is connected to the bottom of the guide tube 1;

[0011] A water outlet 7, the water outlet 7 is connected to the side wall of the flocculation reaction zone 8 of the high-density sedimentation tank; and

[0012] The anode plate 4 and the cathode plate 5 are arranged inside the guide tube 1 , and the anode plate 4 and the cathode plate 5 are arranged in pairs and in parallel.

[0013] Preferably, the dosing pipe 3 is arranged above the water inlet 6 .

[0014] Preferably, the anode plate 4 and the cathode plate 5 are arranged between the impeller 22 and the dosing pipe 3 .

[0015] Preferably, mesh holes are provided on both the anode plate 4 and the cathode plate 5 .

[0016] Preferably, the mesh size is 15 mm×15 mm.

[0017] Preferably, the anode plate 4 is made of boron-doped diamond, and the cathode plate 5 is made of stainless steel.

[0018] Preferably, the outer diameters of the anode plate 4 and the cathode plate 5 are equal to the inner diameter of the flow guide tube 1 .

[0019] Preferably, the thickness of the anode plate 4 and the cathode plate 5 is 2±0.5 mm, and the distance between them is 20±5 mm.

[0020] Preferably, the voltage between the anode plate 4 and the cathode plate 5 is 1-36V, and the current density is 2.5-3.5 mA / cm 2 .

[0021] Preferably, the stirrer 2 is a propeller stirrer.

[0022] In view of the deficiencies in the prior art, the beneficial effects that can be achieved by the present invention are as follows:

[0023] The utility model can realize the electrochemical algae removal function by providing the dosing pipe, the anode plate and the cathode plate, and can greatly improve the treatment cycle and treatment efficiency of the algae in the water body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive effort.

[0025] Figure 1 It is a schematic diagram of a high-density sedimentation tank reaction device with electrochemical algae removal function;

[0026] Figure 2 yes Figure 1 A partial schematic diagram of

[0027] Figure 3 yes Figure 1 and Figure 2 Schematic diagram of the structure of the anode plate and cathode plate.

[0028] In the accompanying drawings, like reference numerals are used to denote like components or structures, wherein:

[0029] 1- flow guide tube; 2- agitator, 21- drive motor, 22- impeller; 3- dosing pipe; 4- anode plate; 5- cathode plate; 6- water inlet; 7- water outlet; 8- high-density sedimentation tank flocculation reaction zone. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0032] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] In order to solve the technical problems of long treatment cycle and low treatment efficiency in the traditional algae treatment process, this embodiment provides a high-density sedimentation tank reaction device with electrochemical algae removal function, such as Figure 1-Figure 2As shown, it includes: a guide tube 1, an agitator 2, a dosing pipe 3, a water inlet 6, a water outlet 7, an anode plate 4 and a cathode plate 5. The guide tube 1 is located at the bottom of the flocculation reaction zone 8 of the high-density sedimentation tank and is fixed to the side wall of the flocculation reaction zone 8 of the high-density sedimentation tank through two connecting rods. The agitator 2 includes components such as a drive motor 21 and an impeller 22. The drive motor 21 can drive the impeller 22 to rotate, wherein the drive motor 21 of the agitator 2 is located at the top of the flocculation reaction zone 8 of the high-density sedimentation tank, and the impeller 22 of the agitator 2 is located inside the guide tube 1. The dosing pipe 3 is connected to the side wall of the guide tube 1. The dosing pipe 3 can be used to add PAM (polyacrylamide) and / or PAC (polyaluminum chloride) to the algae-containing water body. PAM and / or PAC can play a flocculation or coagulation role on the algae-containing water body. The water inlet 6 is connected to the bottom of the guide tube 1, and the water outlet 7 is connected to the side wall of the flocculation reaction zone 8 of the high-density sedimentation tank. The algae-containing water can enter the guide tube 1 from the water inlet 6 and be discharged from the water outlet 7 after treatment. The anode plate 4 and the cathode plate 5 are arranged inside the guide tube 1. The anode plate 4 and the cathode plate 5 are paired and arranged in parallel. In specific applications, the number of anode plates 4 and cathode plates 5 can be one pair or more pairs, which can be configured as needed. Among them, the anode plate 4 is used to connect the anode of the power supply, and the cathode plate 5 is used to connect the cathode of the power supply. The implementation principle is: after the power is turned on, the algae cells can be deactivated by the anode plate 4 and the cathode plate 5, thereby achieving the inactivation of the algae cells. Combined with the addition of PAM and / or PAC, the algae in the water body can be more efficiently and quickly flocculated.

[0034] In this embodiment, by improving the traditional sedimentation tank and setting structures such as the dosing pipe 3, the anode plate 4 and the cathode plate 5, the electrochemical algae removal function can be realized on the basis of the traditional algae removal function, which can greatly improve the treatment cycle and treatment efficiency of algae in the water body.

[0035] In some optional implementations, the agitator 2 is a propeller agitator, which has the advantages of easy operation and smooth operation, and can precisely and stably stir high-viscosity algae-containing water at a relatively high speed. Furthermore, the agitator 2 may preferably have a variable frequency regulation function; in order to achieve full mixing of PAM and / or PAC with the algae-containing water, preferably, the dosing pipe 3 is arranged above the water inlet 6, and in order to improve the treatment efficiency of the anode plate 4 and the cathode plate 5 for the algae-containing water, the anode plate 4 and the cathode plate 5 are arranged between the impeller 22 and the dosing pipe 3, and the outer diameters of the anode plate 4 and the cathode plate 5 are equal to the inner diameter of the guide tube 1, thereby preventing the algae-containing water from flowing out from the sides of the anode plate 4 and the cathode plate 5. At the same time, in order to allow the algae-containing water to pass between the anode plate 4 and the cathode plate 5, as shown Figure 3 As shown, mesh holes are provided on the anode plate 4 and the cathode plate 5. In specific applications, preferably, the mesh hole size is 15 mm×15 mm.

[0036] During actual application, the anode plate 4 is made of boron-doped diamond, the cathode plate 5 is made of stainless steel, the thickness of the anode plate 4 and the cathode plate 5 is 2±0.5mm, the spacing is 20±5mm, the voltage between the anode plate 4 and the cathode plate 5 is 1-36V, and the current density is 2.5-3.5mA / cm2; in addition, in the setting of some optimized structural parameters and application parameters, the ratio of the outer diameter of the impeller 22 of the agitator 2 to the inner diameter of the guide tube 1 is between 1-1.05, and the flow rate of the algae-containing water inside the guide tube 1 is 0.5-0.7m / s.

[0037] The present embodiment provides a high-density sedimentation tank reaction device with an electrochemical algae removal function, and its implementation process is as follows: the algae-containing water enters the guide tube 1 from the water inlet 6, and PAM and / or PAC is added to the guide tube through the dosing pipe 3. Under the action of the agitator 2, the algae-containing water is electrochemically removed from the anode plate 4 and the cathode plate 5 in turn. After the algae removal is completed, the water overflows from the top of the guide tube 1 into the flocculation reaction zone 8 of the high-density sedimentation tank, and is then discharged from the water outlet 7 to enter the subsequent water treatment process.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-density sedimentation tank reaction device with electrochemical algae removal function, characterized in that: include: A draft tube (1), the draft tube (1) is located at the bottom of the flocculation reaction zone (8) of the high-density sedimentation tank; A stirrer (2), a driving motor (21) of the stirrer (2) is located at the top of the flocculation reaction zone (8) of the high-density sedimentation tank, and an impeller (22) of the stirrer (2) is located inside the guide tube (1); A dosing pipe (3), the dosing pipe (3) being in communication with a side wall of the flow guide cylinder (1); A water inlet (6), the water inlet (6) being in communication with the bottom of the guide tube (1); A water outlet (7), the water outlet (7) being connected to a side wall of a flocculation reaction zone (8) of a high-density sedimentation tank; and, The anode plate (4) and the cathode plate (5) are arranged inside the flow guide tube (1), and the anode plate (4) and the cathode plate (5) are arranged in pairs and in parallel.

2. The high-density sedimentation tank reaction device with electrochemical algae removal function according to claim 1 is characterized in that: The dosing pipe (3) is arranged above the water inlet (6).

3. The high-density sedimentation tank reaction device with electrochemical algae removal function according to claim 2 is characterized in that: The anode plate (4) and the cathode plate (5) are arranged between the impeller (22) and the dosing pipe (3).

4. The high-density sedimentation tank reaction device with electrochemical algae removal function according to claim 3 is characterized in that: The anode plate (4) and the cathode plate (5) are both provided with mesh holes.

5. The high-density sedimentation tank reaction device with electrochemical algae removal function according to claim 4 is characterized in that: The mesh size is 15mm×15mm.

6. The high-density sedimentation tank reaction device with electrochemical algae removal function according to claim 5 is characterized in that: The anode plate (4) is made of boron-doped diamond, and the cathode plate (5) is made of stainless steel.

7. The high-density sedimentation tank reaction device with electrochemical algae removal function according to claim 6 is characterized in that: The outer diameters of the anode plate (4) and the cathode plate (5) are equal to the inner diameter of the flow guide tube (1).

8. The high-density sedimentation tank reaction device with electrochemical algae removal function according to claim 1 is characterized in that: The thickness of the anode plate (4) and the cathode plate (5) is 2±0.5 mm, and the spacing between them is 20±5 mm.

9. The high-density sedimentation tank reaction device with electrochemical algae removal function according to claim 8 is characterized in that: The voltage between the anode plate (4) and the cathode plate (5) is 1-36V, and the current density is 2.5-3.5mA / cm 2 .

10. The high-density sedimentation tank reaction device with electrochemical algae removal function according to claim 1, characterized in that: The stirrer (2) is a propeller stirrer.

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