Electrochemical recovery device for ammonia-nitrogen wastewater

Abstract

The utility model discloses an electrochemical recovery device for ammonia nitrogen wastewater, which relates to the technical field of wastewater treatment and comprises a wastewater electrolysis structure, a floating foam collection structure and a floating foam treatment structure. The waste water treatment electrode plates are arranged on the upper surface of the electrolytic bath body at equal intervals, the floating foam collecting structure comprises a foam blowing assembly arranged on the inner wall of the electrolytic bath body and a foam hanging assembly arranged on the upper surface of the electrolytic bath body, and the foam blowing assembly comprises a gas conveying pipe fixedly installed on the inner wall of the electrolytic bath body. By arranging the waste water electrolysis structure and the floating foam collecting structure, compared with the prior art, the device has the advantages that floating foam in the electrolysis tank body can be blown into the position of the foam guide tank by utilizing the foam blowing assembly, and then the floating foam in the position of the foam guide tank can be scraped out by utilizing the foam hanging assembly, so that the floating foam can be efficiently treated, and the electrochemical reaction rate is increased.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to an electrochemical recovery device for ammonia nitrogen wastewater. Background Technology

[0002] Electrochemical treatment of ammonia nitrogen wastewater involves injecting pretreated wastewater into an electrolytic cell, connecting the power supply, and under the influence of current, an oxidation reaction occurs at the anode, producing a strong oxidizing substance, while a reduction reaction occurs at the cathode. Ammonia nitrogen is directly or indirectly oxidized on the anode surface, or reduced near the cathode, transforming into harmless substances such as nitrogen gas.

[0003] Chinese Patent Publication No. CN218709456U discloses an electrochemical oxidation treatment device for high ammonia nitrogen chemical wastewater, comprising: a main unit, which includes a support base and a treatment tank located above the support base. The lower side wall of the treatment tank is fixedly connected to the upper side wall of the support base through multiple sets of evenly distributed telescopic columns. Each telescopic column is fitted with a corresponding support spring, and the two ends of the support spring are fixedly connected to the treatment tank and the support base, respectively; and an automatic liquid replenishment unit, which includes a liquid storage box fixedly installed on the upper side wall of the support base away from the treatment tank. The side of the liquid storage box near the treatment tank is fixedly connected to a symmetrically positioned liquid replenishment pipe, and a water pump matching the liquid replenishment pipe is fixedly installed on the liquid storage box. An elastic switch electrically connected to the water pump is installed on the support base. This utility model utilizes the change in gravity before and after treatment in the treatment tank to control the automatic replenishment of waste liquid from the storage box into the treatment tank, thereby achieving continuous replenishment of waste liquid without the need for manual addition of waste liquid.

[0004] However, this device has the following drawbacks during use: In the electrochemical reaction, the anode and cathode generate gases such as oxygen and hydrogen, respectively. These bubbles, as they rise, carry suspended solids or colloidal substances from the wastewater, forming foam. This foam hinders the contact between the reactants and the electrode surface, reducing the rate of the electrochemical reaction and thus affecting the ammonia nitrogen removal efficiency. To address these drawbacks, we propose an electrochemical recovery device for ammonia nitrogen wastewater. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an electrochemical recovery device for ammonia nitrogen wastewater.

[0006] To address the problems existing in the prior art, this utility model adopts the following technical solution: an electrochemical recovery device for ammonia nitrogen wastewater, comprising:

[0007] Wastewater electrolysis structure: The wastewater electrolysis structure includes an electrolysis cell body, a slag discharge pipe fixedly installed on the front of the electrolysis cell body, and multiple wastewater treatment electrode plates equidistantly arranged on the upper surface of the electrolysis cell body.

[0008] A foam collection structure, comprising a foam blowing assembly disposed on the inner wall of the electrolytic cell body, and a foam hanging assembly disposed on the upper surface of the electrolytic cell body.

[0009] The blowing assembly includes a gas supply pipe fixedly installed on the inner wall of the electrolytic cell body, and jet nozzles fixedly installed at equal intervals on the surface of the gas supply pipe. The gas supply pipe is connected to an external gas supply system.

[0010] The foam-coating assembly includes a mounting bracket fixedly installed on the upper surface of the electrolytic cell body, a rotating shaft rotatably connected to the inner wall of the mounting bracket, multiple scrapers fixedly installed on the surface of the rotating shaft in a circumferential array, a foam-guiding groove opened on the rear wall of the electrolytic cell body, and a drive component provided on the right side of the electrolytic cell body for driving the rotating shaft to rotate.

[0011] A foam treatment structure is located behind the electrolytic cell body and is used to collect and treat foam.

[0012] Preferably, the driving component includes a motor fixedly mounted on the right side of the electrolytic cell body, a first pulley fixedly mounted on the output end of the motor, and a second pulley rotatably connected to the right side of the mounting frame.

[0013] Preferably, the first pulley and the second pulley are connected by belt drive, and the left end of the second pulley extends into the interior of the mounting bracket and is fixedly connected to the right end of the rotating shaft.

[0014] Preferably, the jet nozzle is located between two adjacent wastewater treatment electrode plates.

[0015] Preferably, the scraper is made of rubber, and the foam guide groove allows the scraper to pass through.

[0016] Preferably, the jet nozzle has its jet end facing the guide mist groove.

[0017] Preferably, the foam treatment structure includes a collection frame disposed on the back of the electrolytic cell body, a water supply pipe fixedly installed above the collection frame by a support frame, and nozzles fixedly installed at equal intervals on the surface of the water supply pipe, and the water supply pipe is connected to an external foam elimination agent supply system.

[0018] Preferably, an inclined guide plate is fixedly installed on the back of the electrolytic cell body, with one end of the inclined guide plate below the foam guide groove and the other end of the inclined guide plate above the collection frame.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. By setting up a wastewater electrolysis structure and a foam collection structure, when wastewater enters the electrolytic cell, it can be electrolyzed using wastewater treatment electrode plates. When foam is generated during electrolysis, a foam blowing assembly can blow the foam on the water surface into the foam guide trough. Then, a drive component drives a scraper to rotate, which scrapes the foam blown into the foam guide trough along the foam guide trough out of the electrolytic cell. Compared with existing technologies, this device uses a foam blowing assembly to blow the foam in the electrolytic cell into the foam guide trough, and then uses a foam hanging assembly to scrape the foam in the foam guide trough out, thus efficiently treating the foam and improving the rate of electrochemical reaction.

[0021] 2. By setting up a foam treatment structure, after the foam hanging component scrapes the foam out along the foam guide groove, the foam will flow into the collection frame along the inclined foam guide plate for collection. At the same time, the external foam elimination agent supply system will spray the foam elimination agent into the collection frame through the nozzle to contact the foam, thereby removing the foam and facilitating the treatment of foam. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an undue limitation. In the drawings:

[0023] Figure 1 This is a three-dimensional first-view schematic diagram of the present invention;

[0024] Figure 2 This is a three-dimensional second-view schematic diagram of the present invention;

[0025] Figure 3 This is a side sectional view of the present invention;

[0026] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0027] Figure 5 for Figure 3 Enlarged diagram of point B in the middle.

[0028] The components in the diagram are numbered as follows: 10 Electrolytic cell body, 11 Slag discharge pipe, 12 Wastewater treatment electrode plate, 20 Gas supply pipe, 21 Jet nozzle, 30 Mounting frame, 31 Rotating shaft, 32 Scraper, 33 Foam guide trough, 40 Motor, 41 First pulley, 42 Second pulley, 50 Collection frame, 51 Support frame, 52 Nozzle, 53 Water supply pipe, 60 Inclined guide plate. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0030] Please see Figure 1-5 This utility model provides a technical solution: an electrochemical recovery device for ammonia nitrogen wastewater, comprising: a wastewater electrolysis structure, a foam collection structure, and a foam treatment structure.

[0031] The wastewater electrolysis structure includes an electrolytic cell body 10, a slag discharge pipe 11 fixedly installed on the front of the electrolytic cell body 10, and multiple wastewater treatment electrode plates 12 equidistantly arranged on the upper surface of the electrolytic cell body 10. The electrolytic cell body 10 is also provided with an inlet and an outlet for injecting wastewater into the electrolytic cell body 10 and discharging wastewater (not shown in the figure). The electrolytic cell body 10 is used to contain the ammonia nitrogen wastewater to be treated, and the slag discharge pipe 11 is used to discharge the precipitates or solid waste generated during the treatment process. The wastewater treatment electrode plates 12 are divided into anodes and cathodes, which promote the oxidation or reduction reaction of ammonia nitrogen through electrolysis.

[0032] The foam collection structure includes a foam blowing assembly disposed on the inner wall of the electrolytic cell body 10 and a foam hanging assembly disposed on the upper surface of the electrolytic cell body 10. The foam blowing assembly includes a gas supply pipe 20 fixedly installed on the inner wall of the electrolytic cell body 10 and jet nozzles 21 fixedly installed at equal intervals on the surface of the gas supply pipe 20. The gas supply pipe 20 is connected to an external gas supply system, and the jet nozzles 21 are located between two adjacent wastewater treatment electrode plates 12. The external gas supply system can supply gas to the gas supply pipe 20, and the gas in the gas supply pipe 20 will be ejected along the jet nozzles 21.

[0033] The foam-coating assembly includes a mounting bracket 30 fixedly mounted on the upper surface of the electrolytic cell body 10, a rotating shaft 31 rotatably connected to the inner wall of the mounting bracket 30, multiple scrapers 32 fixedly mounted in a circumferential array on the surface of the rotating shaft 31, a foam-guiding groove 33 formed on the inner rear wall of the electrolytic cell body 10, and a driving component disposed on the right side of the electrolytic cell body 10 for driving the rotating shaft 31 to rotate. The scrapers 32 are located directly above the foam-guiding groove 33. The driving component includes a motor 40 fixedly mounted on the right side of the electrolytic cell body 10, a first pulley 41 fixedly mounted on the output end of the motor 40, and a second pulley 42 rotatably connected to the right side of the mounting bracket 30. The first pulley 41 and the second pulley 42 are connected by belt drive, and the left end of the second pulley 42 extends into the interior of the mounting bracket 30 and is fixedly connected to the right end of the rotating shaft 31.

[0034] The scraper 32 is made of rubber, and the foam guide groove 33 allows the scraper 32 to pass through. The drive motor 40 can drive the first pulley 41 to rotate, and the belt transmission can drive the second pulley 42 to rotate. When the second pulley 42 rotates, it will drive the rotating shaft 31 to rotate, thereby driving the scraper 32 to rotate synchronously.

[0035] The nozzle 21 has its jet end facing the foam guide trough 33. When foam is generated during electrolysis, the foam blowing assembly can blow the foam on the water surface into the foam guide trough 33. Then, the drive component drives the scraper 32 to rotate, so that the foam blown into the foam guide trough 33 by the foam blowing assembly can be scraped out of the electrolytic cell body 10 along the foam guide trough 33.

[0036] An inclined guide plate 60 is fixedly installed on the back of the electrolytic cell body 10. One end of the inclined guide plate 60 is below the foam guide groove 33, and the other end of the inclined guide plate 60 is above the collection frame 50. When the scraper 32 scrapes the foam out of the electrolytic cell body 10 along the foam guide groove 33, it will fall onto the inclined guide plate 60.

[0037] Compared with existing technologies, this device uses a foam blowing assembly to blow foam from the electrolytic cell body 10 into the foam guiding groove 33. Then, a foam hanging assembly can scrape the foam in the foam guiding groove 33 out, thereby efficiently treating the foam and improving the rate of electrochemical reaction.

[0038] The foam treatment structure is located at the rear of the electrolytic cell body 10 and is used to collect and treat foam. The foam treatment structure includes a collection frame 50 located on the back of the electrolytic cell body 10, a water supply pipe 53 fixedly installed above the collection frame 50 by a support frame 51, and nozzles 52 fixedly installed at equal intervals on the surface of the water supply pipe 53. The water supply pipe 53 is connected to an external foam defoaming agent supply system. When the foam hanging component scrapes the foam along the foam guide groove 33 and falls onto the inclined guide plate 60, the foam on the inclined guide plate 60 will flow into the collection frame 50. At the same time, the external foam defoaming agent supply system will spray the foam defoaming agent into the collection frame 50 through the nozzles 52 to contact the foam, thereby removing the foam and facilitating the treatment of foam.

[0039] Specifically, the working principle and operation method of this utility model are as follows:

[0040] Electrolytic treatment: After pretreatment, the wastewater is injected into the electrolytic cell body 10. When the power is turned on, the wastewater treatment electrode plate 12 starts to work, promoting the oxidation or reduction reaction of ammonia nitrogen.

[0041] Foam formation: Gases such as oxygen and hydrogen produced during electrolysis carry suspended or colloidal substances in wastewater to form foam.

[0042] Foam collection: The foam blowing assembly blows the foam towards the foam guide groove 33 through the air nozzle 21. The scraper 32 of the foam hanging assembly rotates under the drive of the drive component, scraping off the foam at the position of the foam guide groove 33 in the electrolytic cell body 10 and scraping it onto the inclined guide plate 60.

[0043] Foam treatment: Foam flows into the collection frame 50 along the inclined guide plate 60, and the nozzle 52 on the water supply pipe 53 sprays foam elimination agent onto the foam to promote the decomposition and sedimentation of the foam.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art based on the technical solution and concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electrochemical ammonia-nitrogen wastewater recovery device, characterized in that, include: Wastewater electrolysis structure, the wastewater electrolysis structure includes an electrolysis cell body (10), a slag discharge pipe (11) fixedly installed on the front of the electrolysis cell body (10), and a plurality of wastewater treatment electrode plates (12) equidistantly arranged on the upper surface of the electrolysis cell body (10). The foam collection structure includes a foam blowing assembly disposed on the inner wall of the electrolytic cell body (10) and a foam hanging assembly disposed on the upper surface of the electrolytic cell body (10). The blowing assembly includes a gas supply pipe (20) fixedly installed on the inner wall of the electrolytic cell body (10), and jet nozzles (21) fixedly installed at equal intervals on the surface of the gas supply pipe (20). The gas supply pipe (20) is connected to an external gas supply system. The foam-coating assembly includes a mounting bracket (30) fixedly mounted on the upper surface of the electrolytic cell body (10), a rotating shaft (31) rotatably connected to the inner wall of the mounting bracket (30), multiple scrapers (32) fixedly mounted in a circumferential array on the surface of the rotating shaft (31), a foam-guiding groove (33) opened on the inner rear wall of the electrolytic cell body (10), and a drive component provided on the right side of the electrolytic cell body (10) for driving the rotating shaft (31) to rotate; A foam treatment structure is provided behind the electrolytic cell body (10) for collecting and treating foam.

2. The electrochemical device for ammonia nitrogen wastewater recovery according to claim 1, characterized in that: The driving component includes a motor (40) fixedly installed on the right side of the electrolytic cell body (10), a first pulley (41) fixedly installed on the output end of the motor (40), and a second pulley (42) rotatably connected to the right side of the mounting frame (30).

3. The electrochemical device for ammonia nitrogen wastewater recovery according to claim 2, characterized in that: The first pulley (41) and the second pulley (42) are connected by belt drive, and the left end of the second pulley (42) extends into the interior of the mounting bracket (30) and is fixedly connected to the right end of the rotating shaft (31).

4. The ammonia nitrogen wastewater electrochemical recovery device according to claim 1, characterized in that: The jet nozzle (21) is located between two adjacent wastewater treatment electrode plates (12).

5. The electrochemical device for ammonia nitrogen wastewater recovery according to claim 1, characterized in that: The scraper (32) is made of rubber, and the foam guide groove (33) allows the scraper (32) to pass through.

6. The electrochemical ammonia nitrogen wastewater recovery device according to claim 1, characterized in that: The jet nozzle (21) has its jet end facing the guide mist groove (33).

7. The electrochemical ammonia nitrogen wastewater recovery device according to claim 1, characterized in that: The foam treatment structure includes a collection frame (50) disposed on the back of the electrolytic cell body (10), a water supply pipe (53) fixedly installed above the collection frame (50) by a support frame (51), and nozzles (52) fixedly installed at equal intervals on the surface of the water supply pipe (53), and the water supply pipe (53) is connected to an external foam elimination agent supply system.

8. The electrochemical ammonia nitrogen wastewater recovery device according to claim 1, characterized in that: An inclined guide plate (60) is fixedly installed on the back of the electrolytic cell body (10), with one end of the inclined guide plate (60) below the foam guide groove (33) and the other end of the inclined guide plate (60) above the collection frame (50).

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