An electrolysis device for dephosphorization and anti-scaling of domestic sewage

Abstract

The utility model discloses an electrolytic device for dephosphorization and scale prevention of domestic sewage, comprising: an electrolytic cell, the electrolytic cell having a relative water inlet and a water outlet, a guide area communicating with the water inlet and the water outlet formed in the electrolytic cell, and the electrolytic cell being filled with iron-carbon filler; an electrode plate, the electrode plate having at least two, at least two of the electrode plates dividing the guide area to form at least three flow channels, adjacent flow channels being communicated with each other, and alternate flow channels being communicated with each other through spaced flow channels; a pulse power supply, the pulse power supply being electrically connected to the electrode plates; the utility model can solve the problem that the surface of micro-electrolytic filler in a traditional electrolytic cell is prone to passivation and hardening, thereby affecting the sewage treatment efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolysis equipment, in particular to an electrolysis device for removing phosphorus and preventing scale from domestic sewage. Background Art

[0002] One of the main sources of phosphorus in surface water is domestic sewage, in which orthophosphate (PO43-) has the highest content, accounting for about 70% to 90% of untreated and precipitated wastewater. However, conventional treatment technology in sewage treatment plants cannot meet the original sewage discharge requirements when removing phosphates, so deep phosphorus removal technology is particularly critical to reduce the nutrient concentration in sewage to the standard level.

[0003] Iron-carbon micro-electrolysis is a new type of water phosphorus removal technology. Its principle is to use iron and carbon to form a primary cell. In the primary cell reaction, iron produces Fe2+ and Fe3+, which co-precipitate with phosphorus in the water, and Fe2+ and Fe3+ form Fe(OH)2 and Fe(OH)3 floccules under certain conditions, which coagulate with phosphorus in the water, thereby achieving the purpose of removing phosphorus from the water. This technology has a wide range of applications, good treatment effects, and simple processes. It has good application prospects, but the defect is that the surface of the micro-electrolysis filler is passivated and hardened. After hardening, normal battery reaction cannot be carried out, which greatly reduces the treatment efficiency. In addition, the filler is generally stacked, which is prone to dead zones, resulting in the inability of sewage to pass through the filler completely, affecting the sewage treatment effect. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the purpose of the utility model is to provide an electrolysis device for removing phosphorus and preventing scale from domestic sewage.

[0005] In order to achieve the above objectives, the technical solution adopted by the utility model includes:

[0006] An electrolytic cell, wherein the electrolytic cell has a water inlet and a water outlet opposite to each other, a flow guide area communicating with the water inlet and the water outlet is formed in the electrolytic cell, and the electrolytic cell is filled with an iron-carbon filler;

[0007] An electrode plate, at least two of the electrode plates are provided, and at least two of the electrode plates separate the flow guide area to form at least three flow channels, the adjacent flow channels are connected to each other, and the alternate flow channels are connected to each other through the spaced flow channels;

[0008] A pulse power supply is electrically connected to the electrode plate.

[0009] The present application configures a plurality of electrode plates with a serpentine structure in an electrolytic cell, connects the electrode plates to an external pulse power supply, and emits high-voltage pulses to the electrode plates through the pulse power supply, so as to diffuse metal ions on the surfaces of the electrode plates and iron-carbon fillers. Combined with the flushing effect of sewage flow, the passivated and caked dirt on the surfaces of the iron-carbon fillers and the electrode plates can be removed, thereby improving the removal effect of phosphates in sewage.

[0010] In the above-mentioned preferred technical solution for the electrolysis device for removing phosphorus and preventing scale from domestic sewage, a U-shaped structure is formed between adjacent flow channels.

[0011] In the above-mentioned preferred technical solution of the electrolysis device for phosphorus removal and scale prevention in domestic sewage, adjacent electrode plates are parallel to each other, and the electrode plates are arranged perpendicular to the side of the electrolytic cell or inclined to the side of the electrolytic cell.

[0012] In the above-mentioned preferred technical solution of the electrolysis device for phosphorus removal and scale prevention in domestic sewage, a conductive connector is arranged on the top of the electrode plate, and the pulse power supply is electrically connected to the electrode plate through the conductive connector.

[0013] In the above-mentioned preferred technical solution for the electrolysis device for dephosphorization and anti-scaling of domestic sewage, the electrode plate is made of one of stainless steel, aluminum plate or iron plate.

[0014] In the above-mentioned preferred technical solution of the electrolysis device for dephosphorization and scale prevention of domestic sewage, the spacing between adjacent electrode plates is 5-20 cm.

[0015] In the above-mentioned preferred technical solution of the electrolysis device for phosphorus removal and scale prevention of domestic sewage, the water inlet is located relatively at the lower position of the electrolytic cell, and the water outlet is located relatively at the upper position of the electrolytic cell.

[0016] In the above-mentioned preferred technical solution of the electrolytic device for dephosphorization and scale prevention of domestic sewage, a sludge hopper is arranged at the bottom of the electrolytic cell corresponding to the flow channel, and the top of the sludge hopper is separated from the electrolytic cell by a filter plate.

[0017] In the above-mentioned preferred technical solution of the electrolysis device for removing phosphorus and preventing scale from domestic sewage, there is at least one sludge hopper.

[0018] In the above-mentioned preferred technical solution of the electrolysis device for removing phosphorus and preventing scale from domestic sewage, there is one sludge hopper, and the sludge hopper corresponds to the flow channel near the water outlet.

[0019] The beneficial effect of the utility model is that by configuring an electrode plate with a serpentine structure in the electrolytic cell and connecting the electrode plate to an external pulse power supply, a high-voltage pulse is emitted to the electrode plate through the pulse power supply, so that the metal ions on the surface of the electrode plate and the iron-carbon filler are diffused, and at the same time, combined with the effect of sewage flow scouring, the passivated and caked dirt on the surface of the iron-carbon filler and the electrode plate is removed, thereby improving the removal effect of phosphate in sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a top view of the electrolytic cell;

[0021] Figure 2 It is a front view of the internal structure of the electrolytic cell;

[0022] In the figure: electrolytic cell 1, water inlet 11, water outlet 12, first side wall 13, second side wall 14, third side wall 15, fourth side wall 16, iron-carbon filler 2, electrode plate 3, flow channel 4, pulse power supply 5, conductive connector 6, sludge hopper 7. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0024] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Based on the problem pointed out in the background technology that the surface of the micro-electrolysis filler in the traditional electrolytic cell 1 is prone to passivation and hardening, which affects the sewage treatment efficiency. The utility model provides an electrolytic device for dephosphorization and anti-scaling of domestic sewage, which aims to configure a serpentine electrode plate 3 in the electrolytic cell 1, and connect the electrode plate 3 to an external pulse power supply 5, and send a high-voltage pulse to the electrode plate 3 through the pulse power supply 5, so that the metal ions on the surface of the electrode plate 3 and the iron-carbon filler 2 are diffused, and at the same time, combined with the effect of sewage flow scouring, the dirt on the surface of the iron-carbon filler 2 and the electrode plate 3 is removed, and the removal effect of phosphate in sewage is improved.

[0027] like Figure 1 to Figure 2 As shown, the utility model of the electrolytic device for removing phosphorus and preventing scale from domestic sewage comprises: an electrolytic cell 1, the electrolytic cell 1 having a relative water inlet 11 and a water outlet 12, a guide area connecting the water inlet 11 and the water outlet 12 is formed in the electrolytic cell 1, and the electrolytic cell 1 is filled with an iron-carbon filler 2; an electrode plate 3, the electrode plate 3 has at least two, at least two electrode plates 3 separate the guide area to form at least three flow channels 4, adjacent flow channels 4 are connected to each other, and alternate flow channels 4 are connected through the separated flow channels 4; a pulse power supply 5, the pulse power supply 5 is electrically connected to the electrode plate 3.

[0028] See also Figure 1 The electrolytic cell 1 has four side walls, which are respectively a first side wall 13, a second side wall 14, a third side wall 15 and a fourth side wall 16; wherein the water inlet 11 is arranged on the first side wall 13, the water outlet 12 is arranged on the third side wall 15, and a plurality of electrode plates 3 are arranged on the second side wall 14 or the fourth side wall 16, the electrode plate 3 arranged on the second side wall 14 is not connected to the fourth side wall 16, and the electrode plate 3 arranged on the fourth side wall 16 is not connected to the second side wall 14, thereby dividing the diversion area in the electrolytic cell 1 into a plurality of flow channels 4, realizing that adjacent flow channels 4 are connected to each other, and the alternate flow channels 4 are connected through the spaced flow channels 4, thereby increasing the flow path of the sewage in the electrolytic cell 1, increasing the contact area between the sewage and the iron-carbon filler 2, improving the removal of phosphate in the water body by the iron-carbon filler 2, and improving the sewage treatment effect of the present application.

[0029] In addition, see Figure 2 In the present application, a pulse power supply 5 is electrically connected to each electrode plate 3, and a high-voltage pulse is emitted to the electrode plate 3 through the pulse power supply 5. After the high-voltage pulse is transmitted to the electrode plate 3 made of a conductive material, a strong magnetic force is formed on the surface of the electrode plate 3 (forming a high-voltage electric field), so as to quickly diffuse the metal ions on the surface of the electrode plate 3 and the iron-carbon filler 2 to the outside. At the same time, since the sewage flows in the flow channel 4 and impacts the surface of the iron-carbon filler 2 and the electrode plate 3, the crusted dirt on the surface of the iron-carbon filler 2 and the electrode plate 3 can be effectively removed, thereby improving the filtering effect of the iron-carbon filler 2 on the sewage and extending the service life of the electrolytic cell 1.

[0030] In one or more embodiments, a U-shaped structure is formed between adjacent flow channels 4. Figure 1 A plurality of interconnected flow channels 4 are arranged in a serpentine structure. This arrangement can increase the flow path of the sewage in the electrolytic cell 1, improve the coagulation effect of the iron-carbon filler 2 on phosphorus in the sewage, and improve the treatment effect of the sewage.

[0031] In one or more embodiments, adjacent electrode plates 3 are parallel to each other, and the electrode plates 3 are arranged perpendicular to the side of the electrolytic cell 1 or inclined to the side of the electrolytic cell 1 .

[0032] See also Figure 1 By arranging the electrode plate 3 to be perpendicular to the second side wall 14 or the fourth side wall 16, or arranging the electrode plate 3 to be inclined relative to the second side wall 14 or the fourth side wall 16, it is possible to increase the flow path of the sewage in the electrolytic cell 1.

[0033] In one or more embodiments, a conductive connector 6 is disposed on the top of the electrode plate 3 , and the pulse power supply 5 is electrically connected to the electrode plate 3 via the conductive connector 6 .

[0034] See also Figure 2 The conductive connector 6 can be configured to be snap-connected, clamped, or bolted to the electrode plate 3. This arrangement can facilitate the installation of the conductive connector 6. The conductive connector 6 on each electrode plate 3 is connected in parallel to the pulse power supply 5. The conductive connector 6 can be made of copper or aluminum.

[0035] In one or more embodiments, the electrode plate 3 is made of one of stainless steel, aluminum plate or iron plate. It should be noted that when the electrode plate 3 is made of aluminum plate or iron plate, the aluminum plate or iron plate will be ionized under the action of the high-voltage pulse emitted by the pulse power supply 5, and then some losses will occur, and the electrode plate 3 needs to be replaced in time after long-term use; when the electrode plate 3 is made of stainless steel, ionization will not occur in sewage, which can extend the service life of the electrode plate 3.

[0036] In one or more embodiments, the spacing between adjacent electrode plates 3 is 5-20 cm. It should be noted that the spacing between adjacent electrode plates 3 can be 10 cm, 15 cm, etc., without specific limitation; the denser the number of electrode plates 3, the better the sewage treatment effect.

[0037] In one or more embodiments, the water inlet 11 is relatively located at a lower position of the electrolytic cell 1 , and the water outlet 12 is relatively located at an upper position of the electrolytic cell 1 .

[0038] See also Figure 2By arranging the water inlet 11 at the lower position of the first side wall 13 of the electrolytic cell 1, the sewage entering the electrolytic cell 1 can be fully in contact with the iron-carbon filler 2. At the same time, the water outlet 12 is arranged at the upper position of the third side wall 15 of the electrolytic cell 1, so that the water flowing out of the electrolytic cell 1 can be fully filtered, thereby improving the sewage treatment effect of the present application.

[0039] In one or more embodiments, a sludge hopper 7 is disposed at the bottom of the electrolytic cell 1 corresponding to the flow channel 4. The top of the sludge hopper 7 is separated from the electrolytic cell 1 by a filter plate. There is at least one sludge hopper 7.

[0040] See also Figure 2 A sludge hopper 7 can be set at the bottom of the electrolytic cell 1 corresponding to each flow channel 4. The sludge hopper 7 is separated from the inside of the electrolytic cell 1 by a filter plate. The pore size of the filter plate can filter the sludge in the electrolytic cell 1, but cannot filter the iron-carbon filler 2 in the electrolytic cell 1; through this arrangement, the filtering effect of sewage can be improved.

[0041] In one or more embodiments, there is one sludge hopper 7 , which corresponds to the flow channel 4 near the water outlet 12 .

[0042] See also Figure 2 When there is only one sludge hopper 7, the sludge hopper 7 is arranged at the bottom part of the electrolytic cell 1 corresponding to the last flow channel 4, that is, the sludge hopper 7 is configured at the bottom of the electrolytic cell 1 relatively close to the water outlet 12; when sludge is generated in the electrolytic cell 1, the sludge is impacted by the water flow in the electrolytic cell 1 and moves toward the last flow channel 4, and is finally collected by the sludge hopper 7; through this arrangement, the collection of sludge in the electrolytic cell 1 can be guaranteed, the accumulation of sludge in the electrolytic cell 1 can be avoided, and the sewage treatment effect of the present application can be improved.

[0043] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An electrolysis device for dephosphorization and anti-scaling of domestic sewage, characterized in that: include: An electrolytic cell, wherein the electrolytic cell has a water inlet and a water outlet opposite to each other, a flow guide area communicating with the water inlet and the water outlet is formed in the electrolytic cell, and the electrolytic cell is filled with an iron-carbon filler; An electrode plate, at least two of the electrode plates are provided, and at least two of the electrode plates separate the flow guide area to form at least three flow channels, the adjacent flow channels are connected to each other, and the alternate flow channels are connected to each other through the separated flow channels; A pulse power supply is electrically connected to the electrode plate.

2. The electrolysis device for dephosphorization and anti-scaling of domestic sewage according to claim 1 is characterized in that: A U-shaped structure is formed between adjacent flow channels.

3. The electrolysis device for dephosphorization and anti-scaling of domestic sewage according to claim 1 is characterized in that: Adjacent electrode plates are parallel to each other, and the electrode plates are arranged perpendicular to the side of the electrolytic cell or inclined to the side of the electrolytic cell.

4. The electrolysis device for dephosphorization and anti-scaling of domestic sewage according to claim 1, characterized in that: A conductive connector is disposed on the top of the electrode plate, and the pulse power supply is electrically connected to the electrode plate via the conductive connector.

5. The electrolysis device for dephosphorization and anti-scaling of domestic sewage according to claim 1 is characterized in that: The electrode plate is made of stainless steel, aluminum plate or iron plate.

6. The electrolysis device for dephosphorization and anti-scaling of domestic sewage according to claim 1, characterized in that: The distance between adjacent electrode plates is 5-20 cm.

7. The electrolysis device for dephosphorization and anti-scaling of domestic sewage according to claim 1 is characterized in that: The water inlet is relatively located at the lower position of the electrolytic cell, and the water outlet is relatively located at the upper position of the electrolytic cell.

8. The electrolysis device for dephosphorization and anti-scaling of domestic sewage according to claim 1 is characterized in that: A sludge hopper is arranged at the bottom of the electrolytic cell corresponding to the flow channel, and the top of the sludge hopper is separated from the electrolytic cell by a filter plate.

9. The electrolysis device for dephosphorization and anti-scaling of domestic sewage according to claim 8, characterized in that: The sludge hopper is at least one.

10. The electrolysis device for dephosphorization and anti-scaling of domestic sewage according to claim 9, characterized in that: The sludge hopper has one sludge hopper corresponding to the flow channel near the water outlet.

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