A circulating water electrochemical continuous electrode reversal scale removal system

Abstract

The present invention discloses a circulating water electrochemical continuous electrode-reversing scale removal system, which includes a working circuit, an electrode-reversing circuit, a plurality of electrochemical scale removal devices, a plurality of device electric control working switches, a plurality of device electric control electrode-reversing switches and a plurality of aeration branches; a sludge discharge port and a water inlet are arranged at the bottom of the electrochemical scale removal device; one electrochemical scale removal device corresponds to one aeration branch, one device electric control electrode-reversing switch and one device electric control working switch; the outlet of the air pump is communicated with the inlets of each aeration branch, and the outlets of each aeration branch are communicated with the aeration heads on the bottom side of the corresponding electrochemical scale removal device; the working circuit is connected to one end of each device electric control working switch, and the other end of each device electric control working switch is connected to the power supply interface of the corresponding electrochemical scale removal device; the electrode-reversing circuit is connected to one end of each device electric control electrode-reversing switch, and the other end of each device electric control electrode-reversing switch is connected to the power supply interface of the corresponding electrochemical scale removal device. This system can achieve continuous electrochemical scale removal of circulating water.

Description

Technical Field

[0001] The present invention belongs to the technical field of electro-chemical water treatment, and relates to a circulating water electrochemical continuous electrode reversal scale removal system. Background Art

[0002] In recent years, the electro-chemical scale removal water treatment technology has been widely recognized and promoted due to its green and environmental protection characteristics. By applying a direct current electric field outside the water body, redox reactions occur in the water body, and a strong alkaline environment is generated in the cathode area, causing calcium and magnesium ions in the water to scale on the cathode plate, achieving the purpose of water softening.

[0003] In the electro-chemical scale removal device, the cathode plate will adsorb and accumulate scale during the reaction process. Therefore, for the scale removal method of the electrode plate, there are mainly mechanical scale removal and electrode reversal scale removal at present. Mechanical scale removal is the current mainstream scale removal method, which realizes scale removal through the relative movement of the scraper and the electrode plate, with simple operation and good economy. However, the scale on the electrode plate removed by the scraper is not complete, and the remaining scale reduces the effective area of the electrode plate, increases energy consumption and affects the scale removal efficiency. Secondly, the scraper is easy to damage the electrode plate. The electrode reversal scale removal is achieved by reversing the anode and cathode, and the scale on the electrode plate is removed thoroughly through the action of the electric field force. However, the electrode reversal scale removal also has problems such as electrode plate damage and discontinuous treatment. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide a circulating water electrochemical continuous electrode reversal scale removal system, which can realize the continuous electro-chemical scale removal of circulating water.

[0005] To achieve the above purpose, the circulating water electrochemical continuous electrode reversal scale removal system of the present invention includes a working circuit, an electrode reversal circuit, a plurality of electro-chemical scale removal devices, a plurality of device electric control working switches, a plurality of device electric control electrode reversal switches, and a plurality of aeration branches;

[0006] A sludge discharge port and a water inlet are arranged at the bottom of the electro-chemical scale removal device; one electro-chemical scale removal device corresponds to one aeration branch, one device electric control electrode reversal switch, and one device electric control working switch; the outlet of the air pump is connected to the inlet of each aeration branch, the outlet of each aeration branch is connected to the aeration head on the bottom side of the corresponding electro-chemical scale removal device, the working circuit is connected to one end of each device electric control working switch, the other end of each device electric control working switch is connected to the power supply interface of the corresponding electro-chemical scale removal device, the electrode reversal circuit is connected to one end of each device electric control electrode reversal switch, and the other end of each device electric control electrode reversal switch is connected to the power supply interface of the corresponding electro-chemical scale removal device.

[0007] An inlet valve is arranged at the water inlet.

[0008] A sludge discharge valve is arranged at the sludge discharge port.

[0009] The lower side of the electrochemical scale removal device is a funnel-shaped structure.

[0010] The distance between adjacent plates is 1 cm to 5 cm.

[0011] The plates are all made of graphite electrodes.

[0012] When any electrochemical scale removal device is in the electrochemical scale removal state, the device electric control working switch corresponding to this electrochemical scale removal device is closed, the device electric control pole inversion switch corresponding to this first electrochemical scale removal device is opened, the water inlet valve at the water inlet of this electrochemical scale removal device is opened, and the sludge discharge valve at the sludge discharge port of this electrochemical scale removal device is closed.

[0013] When the plates in any electrochemical scale removal device are in the scale removal state, the water inlet valve at the water inlet of this electrochemical scale removal device is opened, the device electric control working switch corresponding to this first electrochemical scale removal device is opened, and the device electric control pole inversion switch corresponding to this electrochemical scale removal device is closed.

[0014] The plate voltage provided by the working circuit and the pole inversion circuit is 1 to 15 V, and the current density provided is 10 to 80 A / m 2 。

[0015] The scale removal reactor is controlled by constant current. When the voltage between the plates increases by 15% - 20%, the device electric control working switch is opened, and the device electric control pole inversion switch is closed to start pole inversion for scale removal.

[0016] The present invention has the following beneficial effects:

[0017] When the circulating water electrochemical continuous pole inversion scale removal system of the present invention is specifically operated, each electrochemical scale removal device is connected to the working circuit and the pole inversion circuit respectively in parallel, and at the same time, the electrochemical scale removal state and the scale removal state are switched through the corresponding device electric control working switch and the device electric control pole inversion switch, realizing continuous electrochemical scale removal of the circulating water, and at the same time ensuring that the water treatment capacity of the entire system is not affected when the poles are inverted. In addition, during the pole inversion process of the present invention, that is, during the scale removal process, aeration is introduced to disturb the water body, increase the chaos degree of the water body, accelerate the removal of the scale sample on the plates, and further extend the service life of the plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention.

[0019] Wherein, 1 is the electrochemical scale removal device, 2 is the air pump, 3 is the water inlet, 4 is the water outlet, 5 is the plate, 6 is the aeration head, 7 is the sludge discharge port, S1 is the device electric control pole inversion switch, and S2 is the device electric control working switch. DETAILED DESCRIPTION OF THE INVENTION

[0020] To enable those skilled in the art to better understand the solution of the present invention, the following will clearly and completely describe the technical solution in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present invention disclosed. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessarily confusing the concepts disclosed in the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0021] The schematic structural diagrams according to the disclosed embodiments of the present invention are shown in the accompanying drawings. These figures are not drawn to scale, where for the purpose of clear expression, some details are enlarged and some details may be omitted. The shapes of various regions and layers shown in the figures and their relative sizes and positional relationships are only exemplary. In practice, there may be deviations due to manufacturing tolerances or technical limitations, and those skilled in the art can design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0022] Referring to Figure 1 , the circulating water electrochemical continuous electrode reversal scale removal system described in the present invention includes a working circuit, a pole reversal circuit, a plurality of electrochemical scale removal devices 1, a plurality of device electronic control working switches S2, a plurality of device electronic control pole reversal switches S1, and a plurality of aeration branches;

[0023] One electrochemical scale removal device 1 corresponds to one aeration branch, one device electronic control pole reversal switch S1, and one device electronic control working switch S2;

[0024] A sludge discharge port 7 and a water inlet are provided at the bottom of the electrochemical scale removal device 1. A water inlet valve is provided at the water inlet, and a sludge discharge valve is provided at the sludge discharge port 7.

[0025] The outlet of the air pump 2 is connected to the inlet of each aeration branch, and the outlet of each aeration branch is connected to the aeration head 6 on the side of the bottom of the corresponding electrochemical scale removal device 1.

[0026] The working circuit is connected to one end of each device electronic control working switch S2, and the other end of each device electronic control working switch S2 is connected to the power supply interface of the corresponding electrochemical scale removal device 1. The pole reversal circuit is connected to one end of each device electronic control pole reversal switch S1, and the other end of each device electronic control pole reversal switch S1 is connected to the power supply interface of the corresponding electrochemical scale removal device 1.

[0027] Specifically, the lower side of the electrochemical scale removal device 1 is of a funnel-shaped structure; the distance between adjacent plates 5 is 1 cm to 5 cm, and the plates 5 are all made of graphite electrodes.

[0028] The working process of the present invention is as follows:

[0029] When the present invention is working, all the electrochemical scale removal devices 1 are divided into three groups. Among them, the electrode plates in the first group of electrochemical scale removal devices 1 are descaled, the second group of electrochemical scale removal devices 1 perform electrochemical scale removal, and the third group of electrochemical scale removal devices 1 are in standby; they can also be divided into two groups. Among them, the electrode plates in the first group of electrochemical scale removal devices 1 are descaled, and the second group of electrochemical scale removal devices 1 perform electrochemical scale removal.

[0030] For example, one electrochemical scale removal device 1 performs electrochemical scale removal, the electrodes in one electrochemical scale removal device 1 are descaled, and the other electrochemical scale removal devices 1 are in standby. The specific process is as follows: Close the device electric control working switch S2 corresponding to the first electrochemical scale removal device 1, disconnect the device electric control pole-reversing switch S1 corresponding to the first electrochemical scale removal device 1, disconnect the device electric control working switches S2 and the device electric control working switches S2 corresponding to the other electrochemical scale removal devices 1, open the water inlet valve at the water inlet of the first electrochemical scale removal device 1, and close the sludge discharge valve at the sludge discharge port 7 of the first electrochemical scale removal device 1, so that the first electrochemical scale removal device 1 works for scale removal.

[0031] After the first electrochemical scale removal device 1 works for a preset time, close the device electric control working switch S2 corresponding to the second electrochemical scale removal device 1, open the water inlet valve at the water inlet of the second electrochemical scale removal device 1, close the water inlet valve at the water inlet of the first electrochemical scale removal device 1, then disconnect the device electric control working switch S2 corresponding to the first electrochemical scale removal device 1, close the device electric control pole-reversing switch S1 corresponding to the first electrochemical scale removal device 1, supply power to the first electrochemical scale removal device 1 through the pole-reversing circuit, so that the scale on the electrode plate 5 in the first electrochemical scale removal device 1 is detached, then disconnect the device electric control pole-reversing switch S1 corresponding to the first electrochemical scale removal device 1, and open the sludge discharge valve at the sludge discharge port 7 of the first electrochemical scale removal device 1 to discharge the water and its scale in the first electrochemical scale removal device 1.

[0032] Among them, the plate voltage provided by the working circuit and the pole-reversing circuit is 1 - 15V, and the current density provided is 10 - 80A / m 2 ; The scale removal reactor is controlled by constant current. When the voltage between the electrode plates increases by 15% - 20%, disconnect the device electric control working switch S2 and close the device electric control pole-reversing switch S1 to start pole-reversing scale removal.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications or equivalent substitutions can still be made to the specific embodiments of the present invention, and any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. A circulating water electrochemical continuous electrode-reversing scale removal system, characterized in that, it includes a working circuit, an electrode-reversing circuit, a number of electrochemical scale removal devices (1), a number of device electric control working switches (S2), a number of device electric control electrode-reversing switches (S1) and a number of aeration branches; A sludge discharge port (7) and a water inlet are provided at the bottom of the electrochemical scale removal device (1); one electrochemical scale removal device (1) corresponds to one aeration branch, one device electric control electrode-reversing switch (S1) and one device electric control working switch (S2); the outlet of the air pump (2) is connected to the inlet of each aeration branch, and the outlet of each aeration branch is connected to the aeration head (6) on the side of the bottom of the corresponding electrochemical scale removal device (1). The working circuit is connected to one end of each device electric control working switch (S2), and the other end of each device electric control working switch (S2) is connected to the power supply interface of the corresponding electrochemical scale removal device (1). The electrode-reversing circuit is connected to one end of each device electric control electrode-reversing switch (S1), and the other end of each device electric control electrode-reversing switch (S1) is connected to the power supply interface of the corresponding electrochemical scale removal device (1); A water inlet valve is provided at the water inlet; A sludge discharge valve is provided at the sludge discharge port (7); When any electrochemical scale removal device (1) is in the electrochemical scale removal state, the device electric control working switch (S2) corresponding to this electrochemical scale removal device (1) is closed, the device electric control electrode-reversing switch (S1) corresponding to this first electrochemical scale removal device (1) is opened, the water inlet valve at the water inlet of this electrochemical scale removal device (1) is opened, and the sludge discharge valve at the sludge discharge port (7) of this electrochemical scale removal device (1) is closed; When the electrode plates in any electrochemical scale removal device (1) are in the scale removal state, the water inlet valve at the water inlet of this electrochemical scale removal device (1) is opened, the device electric control working switch (S2) corresponding to this first electrochemical scale removal device (1) is opened, and the device electric control electrode-reversing switch (S1) corresponding to this electrochemical scale removal device (1) is closed.

2. The circulating water electrochemical continuous electrode-reversing scale removal system according to claim 1, characterized in that, The lower side of the electrochemical scale removal device (1) is of a funnel-shaped structure.

3. The circulating water electrochemical continuous electrode-reversing scale removal system according to claim 1, characterized in that, The distance between adjacent electrode plates (5) is 1 cm to 5 cm.

4. The circulating water electrochemical continuous electrode-reversing scale removal system according to claim 1, characterized in that, The electrode plates (5) are all made of graphite electrodes.

5. The circulating water electrochemical continuous electrode-reversing scale removal system according to claim 1, characterized in that, The plate voltage provided by the working circuit and the pole-reversing circuit is 1 to 15 V, and the current density provided is 10 to 80 A / m 2 .

6. The circulating water electrochemical continuous electrode-reversing scale removal system according to claim 1, characterized in that, The scale removal reactor is controlled by a constant current. When the voltage between the electrode plates increases by 15% - 20%, the device electric control working switch (S2) is disconnected, and the device electric control electrode-reversing switch (S1) is closed to start electrode-reversing scale removal.

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