CN216972230U

CN216972230U - Electrocatalytic oxidation device with denitrification function

Info

Publication number: CN216972230U
Application number: CN202122790642.4U
Authority: CN
Inventors: 邹琦; 王义尚
Original assignee: Shanghai Help Environment Engineering Co ltd
Current assignee: Shanghai Help Environment Engineering Co ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-07-15
Anticipated expiration: 2031-11-15

Abstract

The utility model discloses an electrocatalytic oxidation device with a denitrification function, belonging to the technical field of wastewater, and the electrocatalytic oxidation device comprises a shell, a water inlet pipe, a water outlet pipe, a filter material, a cathode plate and an anode plate, wherein the cathode plate and the anode plate are arranged to form an electrolytic system to remove COD (chemical oxygen demand) in the wastewater; by arranging the filter material, the interception efficiency of COD is improved, and the COD is enriched in pores of the filter material; the contact concentration of the negative plate and the positive plate with COD can be improved by embedding the negative plate and the positive plate in the filter material, so that the electrolysis efficiency and the COD removal rate are improved; the first return pipe, the second return pipe and the water pump can form a mechanical backflow driving system, so that the liquid in the filter material area transversely flows, the ion concentration near the cathode plate and the anode plate is ensured to be the same as that of other parts of the liquid, the phenomenon of blocking caused by the concentration polarization phenomenon to anodic oxidation is avoided, and the efficiency of removing COD can be effectively improved.

Description

Electrocatalytic oxidation device with denitrification function

Technical Field

The utility model relates to the technical field of wastewater, in particular to an electrocatalytic oxidation device with a denitrification function.

Background

In the industrial fields of chemical industry, medicine, coal chemical industry, petrochemical industry and the like, a lot of high-concentration waste liquid needs to be treated, and the waste liquid usually contains a large amount of COD compounds. In order to remove these COD compounds, electrocatalytic oxidation techniques are required for removal. However, the existing electrocatalytic oxidation technology mainly has the technical problems that firstly, the removal efficiency of the COD compounds is low, and secondly, in the electrocatalytic process, the concentration polarization phenomenon can block the electrocatalytic process. Improvements to the prior art are needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an electrocatalytic oxidation device with a denitrification function, so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: an electrocatalytic oxidation device with a denitrification function comprises a shell, a water inlet pipe, a water outlet pipe, a filter material, a cathode plate and an anode plate;

the shell is internally divided into a water inlet area and a filtering area, the water inlet area is positioned right above the filtering area, the filtering area is provided with a filtering material, the shell is fixedly connected with a water inlet pipe and a water outlet pipe, the water inlet pipe is positioned above the water inlet area, and the water outlet pipe is communicated with the shell corresponding to the filtering area;

the shell is fixedly connected with a cathode binding post and an anode binding post, the cathode binding post is connected with the negative pole of a power supply, and the anode binding post is connected with the positive pole of the power supply; the lower end of the cathode binding post is fixedly connected with a cathode plate, the lower end of the anode binding post is fixedly connected with an anode plate, and the anode plate and the cathode plate are both embedded in the filter material;

the shell is fixedly connected with a backflow mechanism, and the backflow mechanism comprises a water pump, a backflow pipe I and a backflow pipe II; one end of the first return pipe is fixedly connected with a water inlet of the water pump in a sealing mode, and the other end of the first return pipe is fixedly connected with an area, corresponding to the filtering area, on the shell; one end of the second return pipe is fixedly connected with a water outlet of the water pump in a sealing manner, and the other end of the second return pipe is fixedly connected with an area, corresponding to the filtering area, on the shell; and the side surface of the shell fixedly connected with the first return pipe is parallel to the side surface of the shell fixedly connected with the second return pipe.

As a preferable technical scheme of the utility model, the water pump is fixedly connected to the bearing plate, and the bottom end of the bearing plate is fixedly connected with four supporting legs.

As a preferred technical scheme of the utility model, the interior of the water outlet pipe is fixedly connected with a filter screen, and the filter screen is in threaded connection with the water outlet pipe.

As a preferred technical solution of the present invention, the first return pipe is fixedly connected to the central position of the filtering area corresponding to the housing area, and the second return pipe is fixedly connected to the central position of the filtering area corresponding to the housing area.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model removes COD in wastewater by arranging the cathode plate and the anode plate to form an electrolytic system. By arranging the filter material, COD can be intercepted, the interception efficiency of the COD is improved, and the COD is enriched in pores of the filter material; through burying negative plate and anode plate underground in the filter material can improve the contact concentration of negative plate, anode plate and COD, improve electrolysis efficiency and COD clearance, further, through being provided with the filter screen in the outlet pipe, can avoid the filter material to get into the drain pipe, the filter material gets into the drain pipe and both can lead to the drain pipe to block up, can lead to the filter material to run off again.

2. According to the utility model, the first return pipe, the second return pipe and the water pump can form a mechanical backflow driving system, so that the transverse flow of liquid in the filter material area is promoted, the ion concentration near the cathode plate and the anode plate is ensured to be the same as that of other parts of the liquid, the phenomenon of blocking of anodic oxidation caused by concentration polarization is avoided, and the COD removal efficiency can be effectively improved; through injecing return pipe one fixed connection in the regional central position department of the corresponding casing of filtering area, two fixed connection in the regional central position departments of the corresponding casing of filtering area of return pipe can realize even backward flow, improve and remove concentration polarization effect.

Drawings

FIG. 1 is a schematic structural view of an electrocatalytic oxidation device with denitrification function;

FIG. 2 is a schematic perspective view of an electrocatalytic oxidation apparatus with denitrification function.

In the figure: 1. a housing; 101. a water inlet area; 102. a filtration zone; 2. a water inlet pipe; 3. a water outlet pipe; 4. filtering the material; 5. a cathode plate; 6. an anode plate; 7. a cathode terminal; 8. an anode terminal; 9. a reflux mechanism; 901. a water pump; 902. a first return pipe; 903. a second return pipe; 10. a support plate; 11. supporting legs; 12. and (4) a filter screen.

Detailed Description

In order to make the technical solutions in the embodiments of the present application better understood, the technical solutions in the embodiments of the present application will be described below clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict, and the present application will be described in detail with reference to fig. 1-2 and the embodiments.

Referring to fig. 1-2, an electrocatalytic oxidation device with denitrification function includes a housing 1, a water inlet pipe 2, a water outlet pipe 3, a filter material 4, a cathode plate 5 and an anode plate 6;

the interior of the shell 1 is divided into a water inlet area 101 and a filtering area 102, the water inlet area 101 is positioned right above the filtering area 102, the filtering area 102 is provided with a filtering material 4, the shell 1 is fixedly connected with a water inlet pipe 2 and a water outlet pipe 3, the water inlet pipe 2 is positioned above the water inlet area 101, and the water outlet pipe 3 is communicated with the shell 1 corresponding to the filtering area 102; a filter screen 12 is fixedly connected inside the water outlet pipe 3, and the filter screen 12 is in threaded connection with the water outlet pipe 3;

a cathode binding post 7 and an anode binding post 8 are fixedly connected to the shell 1, the cathode binding post 7 is connected with the negative pole of a power supply, and the anode binding post 8 is connected with the positive pole of the power supply; the lower end of the cathode binding post 7 is fixedly connected with a cathode plate 5, the lower end of the anode binding post 8 is fixedly connected with an anode plate 6, and the anode plate 6 and the cathode plate 5 are both embedded in the filter material 4;

a backflow mechanism 9 is fixedly connected to the shell 1, and the backflow mechanism 9 comprises a water pump 901, a first backflow pipe 902 and a second backflow pipe 903; one end of the first return pipe 902 is fixedly connected with the water inlet of the water pump 901 in a sealing manner, and the other end of the first return pipe 902 is fixedly connected with the area, corresponding to the filter area 102, on the shell 1; the first return pipe 902 is fixedly connected to the central position of the area, corresponding to the shell 1, of the filter area 102, one end of the second return pipe 903 is fixedly connected with a water outlet of the water pump 901 in a sealing mode, and the other end of the second return pipe 903 is fixedly connected with the area, corresponding to the filter area 102, of the shell 1; the second return pipe 903 is fixedly connected to the central position of the filtering area 102 corresponding to the area of the shell 1; the side of the housing 1 fixedly connected to the first return pipe 902 is parallel to the side of the housing 1 fixedly connected to the second return pipe 903. The water pump 901 is fixedly connected to the support plate 10, and four support legs 11 are fixedly connected to the bottom end of the support plate 10.

In this embodiment, the cathode plate 5 and the anode plate 6 form an electrolytic system to remove COD in the wastewater. The filter material 4 can intercept COD, and the COD is enriched in the pores of the filter material 4; negative plate 5 and anode plate 6 bury underground in filter material 4 can improve the contact concentration of negative plate 5, anode plate 6 and COD, improve electrolysis efficiency and COD clearance, through be provided with filter screen 12 in outlet pipe 3, can avoid filter material 4 to get into the drain pipe, filter material 4 gets into the drain pipe and both can lead to the drain pipe to block up, can lead to filter material 4 to run off again. In the embodiment, the first return pipe 902, the second return pipe 903 and the water pump 901 form a mechanical backflow driving system, so that the transverse flow of liquid in the filter material 4 area can be promoted, the ion concentration near the cathode plate 5 and the anode plate 6 is ensured to be the same as that of other parts of the liquid, the phenomenon of blocking of anodic oxidation caused by concentration polarization is avoided, and the efficiency of removing COD can be effectively improved; by limiting the first return pipe 902 to be fixedly connected to the central position of the filtering area 102 corresponding to the area of the shell 1 and the second return pipe 903 to be fixedly connected to the central position of the filtering area 102 corresponding to the area of the shell 1, uniform return can be realized, and the concentration polarization removing effect is improved.

The working principle of the embodiment is as follows: the filter material 4 has good adsorption and enrichment functions on COD in the wastewater, so the COD content in the wastewater in the gaps of the filter material 4 is higher than that of the external solution, and the COD content of the anode plate 6 and the cathode plate 5 in contact is far higher than that of the liquid inlet area, so the electrochemical degradation rate is high, and the degradation rate is high; the water pump 901 enables liquid in the filter material 4 area to be circulated through the outside of the first return pipe 902 and the second return pipe 903 to promote liquid circulation in the filter material 4 area, so that exchange between liquid near the cathode plate 5 and the anode plate 6 and liquid at other positions is promoted, and the phenomenon of concentration polarization caused by overhigh concentration of part of samples near the cathode plate 5 and the anode plate 6 due to electrochemical reaction is avoided.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The electrocatalytic oxidation device with the denitrification function is characterized by comprising a shell (1), a water inlet pipe (2), a water outlet pipe (3), a filter material (4), a cathode plate (5) and an anode plate (6);

the water inlet device is characterized in that the interior of the shell (1) is divided into a water inlet area (101) and a filtering area (102), the water inlet area (101) is located right above the filtering area (102), a filtering material (4) is arranged on the filtering area (102), a water inlet pipe (2) and a water outlet pipe (3) are fixedly connected to the shell (1), the water inlet pipe (2) is located above the water inlet area (101), and the water outlet pipe (3) is communicated with the shell (1) corresponding to the filtering area (102);

a cathode binding post (7) and an anode binding post (8) are fixedly connected to the shell (1), the cathode binding post (7) is connected with the negative pole of a power supply, and the anode binding post (8) is connected with the positive pole of the power supply; the lower end of the cathode binding post (7) is fixedly connected with a cathode plate (5), the lower end of the anode binding post (8) is fixedly connected with an anode plate (6), and the anode plate (6) and the cathode plate (5) are both embedded in the filter material (4);

a backflow mechanism (9) is fixedly connected to the shell (1), and the backflow mechanism (9) comprises a water pump (901), a first backflow pipe (902) and a second backflow pipe (903); one end of the first return pipe (902) is fixedly connected with a water inlet of the water pump (901) in a sealing mode, and the other end of the first return pipe (902) is fixedly connected with an area, corresponding to the filtering area (102), on the shell (1); one end of the second return pipe (903) is fixedly connected with a water outlet of the water pump (901) in a sealing mode, and the other end of the second return pipe (903) is fixedly connected with an area, corresponding to the filtering area (102), on the shell (1); the side surface of the shell (1) fixedly connected with the first return pipe (902) is parallel to the side surface of the shell (1) fixedly connected with the second return pipe (903).

2. The electrocatalytic oxidation device with denitrification function as set forth in claim 1, wherein said water pump (901) is fixedly connected to a supporting plate (10), and four supporting legs (11) are fixedly connected to the bottom end of said supporting plate (10).

3. The electrocatalytic oxidation device with denitrification function as set forth in claim 1, wherein a filter screen (12) is fixedly connected inside the water outlet pipe (3), and the filter screen (12) is in threaded connection with the water outlet pipe (3).

4. The electrocatalytic oxidation apparatus with denitrification function as set forth in claim 1, wherein said first return pipe (902) is fixedly connected to the filtering area (102) at the central position corresponding to the area of the housing (1), and said second return pipe (903) is fixedly connected to the filtering area (102) at the central position corresponding to the area of the housing (1).