Novel nitrogen-reducing electro-adsorption treatment device

Abstract

The utility model discloses a novel nitrogen reduction electro-adsorption treatment device which comprises a plurality of adsorption modules, each adsorption module comprises a shell, PP clamping grooves are formed in the two sides of the shell, polar plates are placed in the shell through the PP clamping grooves, two first partition plates are installed in the shell, and the two first partition plates are arranged in the shell. The interior of the shell is divided into an adsorption area located in the middle and main concentrated water areas distributed on the two sides through a first partition plate. The device disclosed by the utility model has the advantages that the device is suitable for treating the ionic high-TN-concentration enterprise production wastewater under a mixed wastewater condition, and the cost is low and the efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of ion-type high-nitrogen wastewater treatment, specifically a novel nitrogen reduction electro-adsorption treatment device. Background Technology

[0002] In the field of wastewater treatment technology, suitable wastewater treatment technologies exist for both high-concentration and low-concentration TN wastewater. However, for situations where neither high-concentration nor low-concentration TN wastewater is suitable, combined treatment technologies are usually required for effective treatment. This design proposes a novel electro-adsorption treatment system for the pretreatment of high-concentration ionic nitrogen-containing wastewater, effectively treating this type of wastewater while balancing operating costs and treatment effectiveness. Utility Model Content

[0003] The purpose of this invention is to provide a novel nitrogen reduction electroadsorption treatment device to solve the problems mentioned in the background art. It is suitable for treating industrial wastewater with high TN concentration under mixed wastewater conditions, and has the advantages of low cost and high efficiency.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a novel nitrogen reduction electro-adsorption treatment device, comprising multiple adsorption modules, each adsorption module comprising a housing, PP slots provided on both sides of the housing, electrode plates placed in the housing through the PP slots, and two first partition plates installed inside the housing, the housing dividing the interior into an adsorption zone in the middle and a main concentrate zone distributed on both sides through the first partition plates.

[0005] By adopting the above technical solution and using a modular structure, different arrangement combinations can be configured according to the enterprise's water volume and influent concentration to achieve the required size and specifications and can be configured according to the enterprise's site plan. This electro-adsorption device adopts a dual-channel inlet and outlet water form. The device is divided into two main areas: the main concentrate area and the adsorption area. Two water pumps are used to pump wastewater and desorption concentrate respectively. Ionic TN in the wastewater is attracted to the electrode plate concentrate area by the charge on the electrode plate and enriched. The treated low-concentration fresh water is discharged. The desorption concentrate is pumped at a low flow rate to transport the wastewater in the concentrate area enriched by the electrode plate to the concentrate tank. The clear water tank and the concentrate tank are treated with appropriate treatment processes according to the actual concentration and discharged after reaching the standard.

[0006] As a further embodiment of this utility model: a second partition plate is connected to one side of the two first partition plates that are opposite to each other, and the main concentrate zone is divided into multiple concentrate zones by the second partition plate.

[0007] By adopting the above technical solution, the main concentrate area is divided into multiple concentrate sub-areas, and the process is carried out in different areas to improve efficiency.

[0008] As a further embodiment of this utility model: an adsorption pipe connected to the adsorption zone is provided above the shell, a desorption pipe connected to the concentrate zone is provided above the shell, a peristaltic pump is connected to one side of both the adsorption pipe and the desorption pipe, a sewage tank is connected to one side of each peristaltic pump, and a water outlet is provided below the shell, the water outlet is connected to a concentrate tank and a desalination tank.

[0009] By adopting the above technical solution, two peristaltic pumps are used to pump wastewater and desorption concentrate separately. Ionic TN in the wastewater is attracted to the concentrate zone of the electrode plates by the electrode charge and accumulates there. The treated low-concentration freshwater is discharged into a freshwater tank. Simultaneously, clean water is pumped at a low flow rate to transport the wastewater from the concentrate zone to the concentrate tank. The clean water tank and concentrate tank are then treated with appropriate processes based on the actual concentration to achieve compliant discharge.

[0010] As a further improvement of this utility model, a conductivity meter and a power meter are installed between the water outlet and the freshwater pool.

[0011] By adopting the above technical solution, under stable wastewater discharge conditions, the conductivity of the discharged freshwater is generally correlated with the TN concentration in a curve. Therefore, under the condition of conductivity fluctuation measured by the conductivity meter, the power linkage setting is set to adjust the DC power supply voltage within a certain range, thereby stabilizing the concentration of the discharged freshwater.

[0012] As a further improvement of this utility model: both the first partition plate and the second partition plate are made of PP material, and the surfaces of the first partition plate and the second partition plate are provided with adhesive cloth.

[0013] By adopting the above technical solution, a protective shell is used, which can also achieve insulation effect. The filter cloth is made of 200 mesh or more. The filter cloth reduces the water flow disturbance in the fresh water area and the concentrated water area during the wastewater transmission process, so as to avoid affecting the wastewater treatment efficiency. The filter cloth is covered on the filter plate, and the filter plate is inserted into the module, which can be replaced, cleaned and maintained.

[0014] As a further improvement of this utility model: the electrode plate is made of graphite material, and a DC power supply is used to generate current by connecting the electrode plate internally.

[0015] The above technical solution, when using metal plates to conduct electricity, will cause the generation of metal ions and chloride ions, which will affect the wastewater quality and pH value, and will also cause the metal plates to be consumed, ultimately affecting the electro-adsorption efficiency. Using graphite materials can effectively avoid the above situations.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. After pretreatment by an electro-adsorption device, the concentrated wastewater from the enterprise is then treated by MVR evaporation to ultimately form concentrated solid waste and compliant wastewater (the concentrated wastewater treatment by electro-adsorption reduces the energy consumption of MVR treatment); the treated freshwater is discharged in compliance with standards through biological treatment (the nitrogen treatment by electro-adsorption reduces the amount of bacteria TN and the amount of carbon source added, and the electro-adsorption has no effect on the organic components in the wastewater, maintaining the organic matter content in the original wastewater, thereby reducing costs).

[0018] 2. This electro-adsorption device is modular in design, which facilitates on-site installation; the electro-adsorption is powered by a stable DC power supply, and the power consumption and stability meet the actual needs of enterprises; the design reduces wastewater disturbance and improves discharge stability through bidirectional water flow. Attached Figure Description

[0019] Figure 1 This is a flowchart illustrating the processing of an embodiment;

[0020] Figure 2 This is a schematic diagram of the structure of an embodiment;

[0021] Figure 3 This is a schematic diagram of the internal structure of the adsorption module in the embodiment;

[0022] Figure 4 A cross-sectional view of the electrode placement layer;

[0023] Figure 5 A top view of the adsorption module, showing the structure after removing the adsorption and desorption pipes;

[0024] Figure 6 This is a top view of the adsorption module.

[0025] In the diagram: 1. Shell; 2. PP slot; 3. Electrode plate; 4. First separator plate; 5. Adsorption zone; 6. Main concentrate zone; 7. Second separator plate; 8. Concentrate separation zone; 9. Adsorption pipe; 10. Desorption pipe; 11. Peristaltic pump; 12. Wastewater tank; 13. Outlet; 14. Concentrate tank; 15. Desalinated water tank; 16. Conductivity meter; 17. Power meter. Detailed Implementation

[0026] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] In this embodiment of the utility model,

[0028] A novel nitrogen reduction electro-adsorption treatment device, such as Figures 1-6 As shown, it includes multiple adsorption modules. Each adsorption module includes a housing 1. PP slots 2 are provided on both sides of the housing 1. Electrode plates 3 are placed in the housing 1 through the PP slots 2. Two first partition plates 4 are installed inside the housing 1. The housing 1 is divided into an adsorption zone 5 in the middle and a main concentrate zone 6 distributed on both sides by the first partition plates 4.

[0029] The two first partition plates 4 are connected to a second partition plate 7 on opposite sides, and the main concentrate zone 6 is divided into multiple concentrate zones 8 by the second partition plate 7.

[0030] An adsorption pipe 9 connected to the adsorption zone 5 is provided above the shell 1. A desorption pipe 10 connected to the concentrate zone is provided above the shell 1. A peristaltic pump 11 is connected to one side of both the adsorption pipe 9 and the desorption pipe 10. A sewage tank 12 is connected to one side of each peristaltic pump 11. An outlet 13 is provided below the shell 1. The outlet 13 is connected to a concentrate tank 14 and a desalination tank 15.

[0031] A conductivity meter 16 and a power meter 17 are installed between the water outlet 13 and the freshwater pool 15.

[0032] Both the first partition plate 4 and the second partition plate 7 are made of PP material, and the surfaces of the first partition plate 4 and the second partition plate 7 are provided with adhesive cloth (not shown).

[0033] The electrode plate 3 is made of graphite material, and a DC power supply is used to generate current by connecting the electrode plate 3.

[0034] Working principle:

[0035] After pretreatment by an electro-adsorption device, the concentrated wastewater is then treated by MVR evaporation to ultimately form concentrated solid waste and compliant wastewater (the concentrated wastewater treatment by electro-adsorption reduces the energy consumption of MVR treatment); the treated freshwater is discharged in compliance with standards through biological treatment (the nitrogen treatment by electro-adsorption reduces the amount of bacteria TN and the amount of carbon source added, and the electro-adsorption has no effect on the organic components in the wastewater, maintaining the organic matter content in the original wastewater, thereby reducing costs).

[0036] Two peristaltic pumps 11 are used to pump wastewater and desorption concentrate, respectively. Ionic TN in the wastewater is attracted to the concentrate zone of electrode 3 by the charge on electrode 3, and the treated low-concentration freshwater is discharged into the freshwater tank 15. The desorption concentrate is simultaneously pumped at a low flow rate with clean water to transport the wastewater concentrated in the concentrate zone of electrode 3 to the concentrate tank 14. The clean water tank and concentrate tank 14 are then treated with appropriate processes based on the actual concentration to achieve the required discharge standards.

[0037] 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 within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel nitrogen reduction pressure swing adsorption process comprising a plurality of adsorption modules, characterized by: The adsorption module comprises a shell (1), both sides of the shell (1) are provided with PP card slots (2), the shell (1) is placed with an electrode plate (3) through the PP card slot (2), two first partition plates (4) are installed in the shell (1), the shell (1) is divided into an adsorption area (5) in the middle and main concentrated water areas (6) distributed on both sides by the first partition plate (4).

2. A novel nitrogen reduction electric adsorption treatment device according to claim 1, characterized in that: The side of the two first partition plates (4) away from each other is connected with a second partition plate (7), and the main concentrated water area (6) is divided into a plurality of sub-concentrated water areas (8) by the second partition plate (7).

3. A novel nitrogen reduction electric adsorption treatment device according to claim 1, characterized in that: The top of the shell (1) is provided with an adsorption pipeline (9) connected with the adsorption area (5), the top of the shell (1) is provided with a desorption pipeline (10) connected with the concentrated water area, one side of the adsorption pipeline (9) and the desorption pipeline (10) is connected with a peristaltic pump (11), one side of each peristaltic pump (11) is connected with a sewage pool (12), the bottom of the shell (1) is provided with a water outlet (13), the water outlet (13) is connected with a concentrated water pool (14) and a fresh water pool (15).

4. A novel nitrogen reduction electric adsorption treatment device according to claim 3, characterized in that: The conductivity tester (16) and the power instrument (17) are arranged between the water outlet (13) and the fresh water pool (15).

5. A novel nitrogen reduction electric adsorption treatment device according to claim 1, characterized in that: The first partition plate (4) and the second partition plate (7) are made of PP material, and the surface of the first partition plate (4) and the second partition plate (7) is provided with adhesive cloth.

6. A novel nitrogen reduction electric adsorption treatment device according to claim 1, characterized in that: The electrode plate (3) is made of graphite material, and a direct current power supply is connected with the electrode plate (3) to generate current.

Images