CN210480937U

CN210480937U - Modularized electrocatalytic oxidation sewage treatment system

Info

Publication number: CN210480937U
Application number: CN201920862725.XU
Authority: CN
Inventors: 赵春田
Original assignee: Huaying Pipeline Monitoring Technology Service Hubei Co ltd; Yichang Huateng Pipeline Engineering Co ltd; Ningbo Ruiyan Environmental Protection Technology Co ltd
Current assignee: Huaying Pipeline Monitoring Technology Service Hubei Co ltd; Yichang Huateng Pipeline Engineering Co ltd; Ningbo Ruiyan Environmental Protection Technology Co ltd
Priority date: 2019-06-10
Filing date: 2019-06-10
Publication date: 2020-05-08
Anticipated expiration: 2029-06-10

Abstract

The utility model relates to a modularized electrocatalytic oxidation sewage treatment system, which comprises a catalytic oxidation pond, a water inlet, a water outlet and an internal structure supporting frame, wherein a plurality of installation units are arranged in the frame; the electrocatalytic oxidation device is provided with a plurality of groups and is respectively arranged in each installation unit, each group of electrocatalytic oxidation device comprises a shell and at least one pair of electrolysis baskets, each electrolysis basket is filled with a catalyst, the catalyst is freely contacted with sewage entering the inside of the electrolysis basket, each electrolysis basket is respectively connected with an anode and a cathode, and each shell is provided with a water exchange hole; the anode electrode plates are respectively and electrically connected with the anode of each electrolytic basket; and the cathode electrode plates are respectively and electrically connected with the cathode of each electrolytic basket. The advantages are that: the method can realize the modularization and combination of the electrocatalytic oxidation sewage treatment technology and process, improve the treatment efficiency and the adaptability to sewage component and flow change, greatly simplify the operation and maintenance flow and reduce the operation and maintenance cost.

Description

Modularized electrocatalytic oxidation sewage treatment system

Technical Field

The utility model relates to a sewage treatment technology, in particular to a modularization electrocatalytic oxidation sewage treatment system.

Background

Representative sewage treatment technologies at present include biochemical technology and membrane technology. Although some sewage treatment technologies such as electrocatalytic oxidation technology and ozone oxidation method are tried, the treatment effect of some sewage sources cannot meet the requirement, and the operation cost is beyond the tolerable range.

The biochemical sewage treatment technology widely applied at present has the advantages that the operation cost of certain sewage which can be biochemically treated can be relatively low, but at least the following problems are difficult to avoid, 1) a sewage treatment tank with larger volume or occupied area is often required to be built; 2) the required biochemical reaction time is longer; 3) for some pollutants containing non-decomposable pollution sources of microorganisms, namely non-BOD pollutants, such as printing and dyeing sewage, industrial sewage, coking sewage and the like, the biochemical technology generally cannot meet the treatment requirement, and if the biochemical technology is combined with other technologies, the treatment cost is often too high, and enterprises cannot bear the treatment cost.

The membrane technology can achieve a certain degree of miniaturization, but has a plurality of defects. For example, the operation cost is high, besides the purified water after the membrane, the membrane treatment technology cannot directly separate the pollutants from the sewage, and the membrane only can play a role in concentration, and cannot essentially independently complete the sewage treatment.

The oxidation efficiency of the current common electrocatalytic oxidation sewage treatment technology is not high, similarly, the investment and operation cost of the ozone oxidation method are high, and the treatment effect is not ideal.

A new technology based on high-efficiency electrocatalytic oxidation realizes high-efficiency generation and oxidation reaction of micro active oxygen by using special catalysts and other technologies, can directly oxidize and decompose pollutants, and separates the decomposed pollutants from water to achieve the aims of reducing COD (chemical oxygen demand), BOD (biochemical oxygen demand), removing phosphorus and nitrogen and the like. The technology has wide adaptability to pollutants, but has the defects of complex equipment for electrocatalytic oxidation, difficult design, installation and maintenance and difficult realization of large-scale industrial application of the sewage treatment technology. The design and construction technology of the electrocatalytic oxidation module well solves the problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a modularization electrocatalytic oxidation sewage treatment system is provided, can overcome the technical defect that current electrocatalytic oxidation was used effectively.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a modularized electrocatalytic oxidation sewage treatment system comprises a catalytic oxidation tank, wherein the catalytic oxidation tank is provided with a water inlet and a water outlet, a structural support frame is arranged in the catalytic oxidation tank, and a plurality of installation units which are uniformly or regularly distributed are arranged in the structural support frame; an electrocatalytic oxidation device, wherein a plurality of groups of electrocatalytic oxidation devices are arranged in each installation unit in a one-to-one correspondence manner, each group of electrocatalytic oxidation devices comprises a shell and at least one pair of electrolytic baskets, a catalyst is filled in each electrolytic basket, the catalyst is in free contact with sewage entering the electrolytic baskets through meshes of the electrolytic baskets, one of the electrolytic baskets is connected with an anode, the other electrolytic basket is connected with a cathode, and each shell is provided with a water exchange hole; an anode electrode plate electrically connected to the anode of each of the electrolytic baskets; and the cathode electrode plates are respectively connected with the cathode of each electrolytic basket.

The utility model has the advantages that: the sewage treatment device has the advantages of reasonable structural design, realization of arbitrary modular combination and expansion, improvement of the sewage treatment efficiency of electrocatalytic oxidation, improvement of the adaptability (such as the change of inlet water quality and inlet water quantity) of the sewage treatment technology of electrocatalytic oxidation, great simplification of operation and maintenance operation, and reduction of operation cost.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Furthermore, a plurality of the installation units are distributed in a rectangular array.

The further scheme has the advantages of simple and reasonable arrangement and convenience for the combined use of multiple groups of electrocatalytic oxidation devices.

Further, the housing is a rectangular parallelepiped housing.

The beneficial effect of adopting the above-mentioned further scheme is that the shape is regular, does benefit to multiunit modularization distribution.

Further, in the above electrocatalytic oxidation apparatus on the same column, the upper end of each of the housings is provided with an anode connector and a cathode connector which are in one-to-one correspondence with the anodes and cathodes inside thereof and are electrically connected thereto, the lower end of each of the housings is provided with an electrically connected anode interface and a cathode interface which are in one-to-one correspondence with the anodes and cathodes inside thereof, the anode connectors and the cathode connectors on the housings positioned below are respectively inserted into the anode interfaces and the cathode interfaces on the housings adjacent above one by one and are electrically connected to each other, and the anode connectors and the cathode connectors on the housings positioned uppermost are respectively electrically connected to the anode electrode pieces and the cathode electrode pieces.

The beneficial effect of adopting the above further scheme is that the design can realize the rapid installation combination and expansion between the anode and the cathode of each row of the multi-group electrocatalytic oxidation device.

Furthermore, a plurality of rows of mutually independent and closed electrocatalytic oxidation compartments are defined on the structural support frame through a partition board which is vertically arranged on the structural support frame, the upper end and the lower end of each row of electrocatalytic oxidation compartments are respectively provided with a water inlet and a water outlet which are communicated with the inside of the catalytic oxidation pond, a plurality of groups of electrocatalytic oxidation devices in each row are respectively distributed in each row of electrocatalytic oxidation compartments in a one-to-one correspondence manner, the upper end and the lower end of a shell of each electrocatalytic oxidation device are respectively provided with the water exchange holes, two adjacent shells are communicated through the water exchange holes which are close to each other, and in the same row, two adjacent electrolysis baskets connected with the anode and two electrolysis baskets connected with the cathode are respectively communicated through connecting pipelines which penetrate through the corresponding shells.

The adoption of the further scheme has the advantages that the design can enable the multiple groups of electrocatalytic oxidation devices in each row to be connected in series, combined and expanded, and enable the sewage treatment in the multiple groups of electrocatalytic oxidation devices in each row to flow along a specific flow, so that the effective treatment of the sewage is finally realized.

Furthermore, water flow guide nozzles are arranged at the water inlet and the water outlet at the upper end and the lower end of each row of electrocatalytic oxidation compartments.

The beneficial effect of adopting above-mentioned further scheme is that the design of rivers guide nozzle can make water keep stable or turbulent flow or rotatory form in the electric catalytic oxidation device module, does benefit to the good flow of sewage.

Furthermore, a plurality of layers of mutually independent and closed electrocatalytic oxidation interlayers are limited on the structural support frame through a partition board horizontally mounted on the structural support frame, a water inlet and a water outlet communicated with the inside of the catalytic oxidation pond are respectively arranged on each layer of electrocatalytic oxidation interlayer, a plurality of groups of electrocatalytic oxidation devices on each layer are sequentially connected in series in the electrocatalytic oxidation interlayers on the corresponding layer according to spatial position, the two sides of the shell of each electrocatalytic oxidation device in the series direction are respectively provided with the water exchange holes, two adjacent shells are communicated through the water exchange holes close to each other, and in the same layer, two adjacent electrolysis baskets connected with the anode and two electrolysis baskets connected with the cathode are respectively communicated through connecting pipelines penetrating through the two corresponding shells.

The beneficial effect of adopting above-mentioned further scheme is that this design can make every layer multiunit electric catalytic oxidation device establish ties to make the interior sewage treatment of every layer multiunit electric catalytic oxidation device flow along different and specific flows through, finally realize the effective processing of sewage.

Furthermore, a water flow guide nozzle is arranged at the water outlet and the water inlet of each electrocatalytic oxidation interlayer.

Furthermore, a water flow guide nozzle is respectively arranged at the water inlet and the water outlet of each layer of the electrocatalytic oxidation interlayer.

The beneficial effect of adopting the above-mentioned further scheme is that arrange rationally, do benefit to the quick installation and the connection of positive pole and negative pole, and follow-up possible maintenance.

Drawings

FIG. 1 is a schematic structural view of the modular electrocatalytic oxidation sewage treatment system of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the device comprises a catalytic oxidation tank, 2, a structural support frame, 3, an electrocatalytic oxidation device, 4, an anode electrode plate, 5 and a cathode electrode plate.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Example (b): as shown in the figure, the modular electrocatalytic oxidation sewage treatment system of the embodiment includes a catalytic oxidation tank 1, where the catalytic oxidation tank 1 has a water inlet and a water outlet, a structural support frame 2 is disposed inside the catalytic oxidation tank 1, and a plurality of uniformly distributed installation units are disposed in the structural support frame 2; an electrocatalytic oxidation apparatus 3, wherein a plurality of groups of electrocatalytic oxidation apparatuses 3 are provided, and are respectively installed in each of the installation units in a one-to-one correspondence manner, each group of electrocatalytic oxidation apparatuses 3 includes a housing 31 and at least one pair of electrolytic baskets 32, a catalyst is filled in each of the electrolytic baskets 32, the catalyst is in free contact with sewage entering the electrolytic baskets 32 through meshes of the electrolytic baskets 32, one of the pair of electrolytic baskets 32 is connected with an anode, the other electrolytic basket 32 is connected with a cathode, and each of the housings 31 is provided with a water exchange hole; an anode electrode sheet 4, the anode electrode sheet 4 being electrically connected to the anode of each of the electrolytic baskets 32; and a cathode electrode sheet 5, wherein the cathode electrode sheet 5 is electrically connected to the cathode of each of the electrolytic baskets 32.

When the combined use is carried out, a plurality of groups of the electrocatalytic oxidation devices 3 can be freely combined and spliced through design and installation, namely can be connected in series or in parallel, specifically, a plurality of baffles are detachably arranged in the structural supporting frame 2, so that a sewage flow path is formed among the plurality of groups of the electrocatalytic oxidation devices 3 which are mutually connected in series, sewage flowing into the catalytic oxidation tank 1 is respectively communicated with a water exchange hole of the shell 31 of the electrocatalytic oxidation device 3 which is positioned at the initial end (the initial one when the electrocatalytic oxidation devices are connected in series) and the tail end (the tail end when the electrocatalytic oxidation devices are connected in series), and when the electrocatalytic oxidation devices are connected in parallel, each path of sewage flowing in parallel forms an independent sewage treatment channel by detachably arranging a plurality of baffles or valves in the structural supporting frame 2, each path of sewage can be mutually connected in series by a plurality of groups of the electrocatalytic oxidation devices 3, and the sewage flowing at the initial end (the initial one when the electrocatalytic oxidation devices are connected in series) One) is communicated with sewage entering the catalytic oxidation tank 1 respectively, so that the integrated, regular, ordered and modular splicing of the treatment system is completed.

In a preferred embodiment, the plurality of mounting units are arranged in a rectangular array, and the housing 31 is preferably a rectangular parallelepiped housing.

In the assembly, in the electrocatalytic oxidation device 3 on the same row, the upper end of each casing 31 is respectively provided with an anode connector 33 and a cathode connector 34 which are in one-to-one correspondence with and electrically connected with the anode and the cathode inside the casing 31, the lower end of each casing 31 is respectively provided with an electrically connected anode connector and a cathode connector which are in one-to-one correspondence with the anode and the cathode inside the casing 31, the anode connector 33 and the cathode connector 34 on the casing 31 below are respectively inserted into the anode connector and the cathode connector on the casing 31 above the adjacent casing one-to-one correspondence and are electrically connected with each other, the anode connector 33 and the cathode connector 34 on the casing 31 above the uppermost part are respectively and electrically connected with the anode electrode plate 4 and the cathode electrode plate 5, the design is favorable for the respective interconnection between the anodes and between the cathodes in a plurality of groups of electrocatalytic oxidation devices 3, the arrangement difficulty is reduced, and the quick disassembly and assembly combination of the two adjacent electrocatalytic oxidation devices 3 is very convenient.

Of course, the plurality of groups of electrocatalytic oxidation devices 3 may also be distributed in a cylindrical array manner, or other regular array distribution manners, and are not limited to the rectangular array arrangement.

Taking a rectangular array as an example, the combination among the groups of electrocatalytic oxidation devices 3 has the following various ways:

a plurality of rows of mutually independent and closed electrocatalytic oxidation compartments are defined on the structural supporting frame 2 through a partition board which is vertically arranged on the structural supporting frame, the upper end and the lower end of each row of electrocatalytic oxidation compartments are respectively provided with a water inlet and a water outlet which are communicated with the inside of the catalytic oxidation pond 1, a plurality of groups of electrocatalytic oxidation devices 3 in each row are respectively distributed in each row of electrocatalytic oxidation compartments in a one-to-one correspondence manner, the upper end and the lower end of the shell 31 of each electrocatalytic oxidation device 3 are respectively provided with the water exchange holes, two adjacent shells 31 are mutually communicated through the water exchange holes which are close to each other, in the same row, the two adjacent electrolysis baskets 32 which are connected with the anode and the electrolysis baskets 32 which are connected with the cathode are respectively communicated through connecting pipelines which penetrate through the two corresponding shells 31, wherein the lower end area of the lowermost electrocatalytic oxidation device 3 is of an unclosed structure, and keeps the communication with the whole body of the catalytic oxidation tank 1, namely the communication with the sewage in the catalytic oxidation tank 1;

wherein, water inlet and drain outlet department all install rivers guide nozzle on every row of the upper and lower extreme of electricity catalytic oxidation compartment, can make water keep stable or turbulent or rotatory form in the electricity catalytic oxidation device module through the design of rivers guide nozzle, do benefit to the good flow of sewage.

It should be noted that: the communication between the two upper and lower adjacent electric connection baskets 32 can be beneficial to the supplement or replacement of the internal catalyst between the electrolytic baskets 32 connected in series in the same column.

A plurality of independent and closed electrocatalytic oxidation interlayers are limited on the structural support frame 2 through a partition board horizontally mounted on the structural support frame, each electrocatalytic oxidation interlayer is respectively provided with a water inlet and a water outlet communicated with the inside of the catalytic oxidation pond 1, a plurality of groups of electrocatalytic oxidation devices 3 of each layer are connected in series in the electrocatalytic oxidation interlayer of the corresponding layer according to the spatial position sequence (specifically, the shells 31 of a plurality of electrocatalytic oxidation devices 3 of each layer are connected in series according to the linear spatial position distribution sequence, the linear spatial position can be a circuitous and tortuous route), the shell 31 of each electrocatalytic oxidation device 3 is respectively provided with the water exchange holes at two sides of the series direction, and two adjacent shells 31 are mutually communicated through the water exchange holes close to each other, in the same layer, two adjacent electrolysis baskets 32 connected with the anode and two adjacent electrolysis baskets 32 connected with the cathode are mutually communicated The shells 31 at the head and the tail are communicated with the catalytic oxidation tank 1 integrally, namely communicated with sewage in the catalytic oxidation tank 1, in the shells 31 communicated (connected in series) with a plurality of groups of water paths in the same group of electrocatalytic oxidation interlayers, which are respectively communicated through connecting pipelines penetrating through the shells 31 corresponding to the electrocatalytic oxidation interlayers;

wherein, the water inlet and the water outlet of each layer of above-mentioned type of electrocatalytic oxidation interlayer are respectively installed with rivers direction mouth, and this design can make every layer of multiunit electrocatalytic oxidation device 3 establish ties the combination extension to make the interior sewage treatment of every layer multiunit electrocatalytic oxidation device 3 between flow along different and specific flows through, finally satisfy the effective processing of sewage.

3) In the above electrocatalytic oxidation apparatus 3 on the same row, the upper and lower ends of the casing 31 are both provided with the water exchange holes, the water exchange holes at the lower end of the casing 31 above are all communicated (connected) with the water exchange hole at the upper end of the casing 31 below adjacent to each other in a water path manner, and the water exchange holes are also formed in the side walls of all the casings 31 of each layer adjacent to each other, so that the two are communicated with each other in the same layer in a water path manner, specifically, in the casings 31 of each layer, the surfaces of two adjacent casings 31 adjacent to each other are both provided with the water exchange holes, and the water exchange holes adjacent to each other are communicated with each other.

The following are specifically mentioned: the flow direction of sewage in the inside of multiunit electrocatalytic oxidation device 3 can be adjusted through UNICOM and UNICOM order between the casing 31 of every group electrocatalytic oxidation device 3, correspondingly, set up the baffle wantonly according to the flow direction of sewage and the UNICOM relation between the multiunit casing 31 on structural support frame 2 to form required sewage treatment route, finally make multiunit electrocatalytic oxidation device 3 can reconsitute according to series connection or parallelly connected form wantonly and satisfy the requirement to sewage treatment capacity and sewage composition change.

As a preferred embodiment, the anode electrode plate 4 and the cathode electrode plate 5 are respectively erected at the upper end of the catalytic oxidation cell 1, and are reasonably arranged, so that the anode electrode plate 4 and the cathode electrode plate 5 are respectively connected with the anode and the cathode.

One or more monitoring components or sampling points for detecting the flow, temperature, water pressure, COD, BOD, pH value, total nitrogen, total phosphorus or turbidity/suspended matters can be arranged at any detection positions in the water inlet, the water outlet and/or the interior of the catalytic oxidation pond 1, and the monitoring of the running state of the whole electrocatalytic oxidation system can be formed by combining the acquisition of the information and the working power, voltage or current of the internal electrode of the single or a plurality of electrocatalytic oxidation devices 3.

The whole system has the following advantages:

1) the modularized electrocatalytic oxidation device 3 in a unified form or standardization can easily form large-scale mass production and standardized installation, avoid complex, messy and complicated installation and detection processes, greatly improve the construction quality and reduce the error and rejection rate;

2) in the whole system, each module is easy to detect and maintain. For the damaged unit, the damaged unit is simply replaced by a good preparation unit on site, and each row of multiple groups of electrolysis baskets are connected inside the damaged unit, so that the subsequent supplement and replacement of the catalyst can be facilitated, and the operation and maintenance cost is integrally reduced;

3) when in use, the number of the electrocatalytic oxidation devices 31 and the assembly form of the series connection and the parallel connection can be increased or decreased according to the needs, so that the sewage treatment efficiency is greatly improved, or the operation cost is reduced and the sewage treatment efficiency of the electrocatalytic oxidation is improved under the condition of meeting the treatment requirements;

4) when the device is used, the number of the units for electrocatalytic oxidation can be conveniently reduced or expanded according to the requirements according to the source or the pollution degree of sewage, and the number of the units can be increased or decreased according to different forms of series connection and parallel connection. When the sewage treatment system is connected in series, multistage advanced treatment can be completed, and when the sewage treatment system is connected in parallel, simultaneous treatment of multiple paths of sewage can be completed, so that the treatment capacity is improved, and therefore, the modular design and the technology have excellent adaptability.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A modular electrocatalytic oxidation wastewater treatment system, comprising:

the device comprises a catalytic oxidation tank (1), wherein the catalytic oxidation tank (1) is provided with a water inlet and a water outlet, a structural support frame (2) is arranged inside the catalytic oxidation tank (1), and a plurality of installation units which are uniformly or regularly distributed are arranged in the structural support frame (2);

the electrocatalytic oxidation device (3) is provided with a plurality of groups, and is respectively installed in each installation unit in a one-to-one correspondence manner, each group of electrocatalytic oxidation device (3) comprises a shell (31) and at least one pair of electrolysis baskets (32), a catalyst is filled in each electrolysis basket (32), the catalyst is in free contact with sewage entering the electrolysis basket (32) through meshes on the electrolysis basket (32), one of the electrolysis baskets (32) in the pair of electrolysis baskets (32) is connected with an anode, the other electrolysis basket (32) is connected with a cathode, and each shell (31) is provided with a water exchange hole;

the anode electrode plates (4), and the anode electrode plates (4) are respectively and electrically connected with the anode of each electrolytic basket (32);

and the cathode electrode plates (5), and the cathode electrode plates (5) are respectively electrically connected with the cathode of each electrolytic basket (32).

2. The modular electrocatalytic oxidation wastewater treatment system as set forth in claim 1, wherein: the installation units are distributed in a rectangular array.

3. The modular electrocatalytic oxidation wastewater treatment system as set forth in claim 2, wherein: the shell (31) is a cuboid shell.

4. A modular electrocatalytic oxidation wastewater treatment system as set forth in claim 2 or 3 wherein: in the electrocatalytic oxidation device (3) in the same column, the upper end of each shell (31) is respectively provided with an anode connector (33) and a cathode connector (34) which are in one-to-one correspondence with the anode and the cathode inside the shell and are electrically connected with the anode and the cathode inside the shell, the lower end of each shell (31) is respectively provided with an electrically connected anode interface and an electrically connected cathode interface which are in one-to-one correspondence with the anode and the cathode inside the shell, the anode connector (33) and the cathode connector (34) on the shell (31) below the shells are respectively inserted into the anode interface and the cathode interface on the adjacent shell (31) above the shells in one-to-one correspondence and are electrically connected with each other, and the anode connector (33) and the cathode connector (34) on the shell (31) above the top are respectively electrically connected with the anode electrode.

5. The modular electrocatalytic oxidation wastewater treatment system as set forth in claim 4, wherein: a plurality of rows of mutually independent and closed electrocatalytic oxidation compartments are limited on the structural supporting frame (2) through a partition board which is vertically arranged on the structural supporting frame, the upper end and the lower end of each row of electrocatalytic oxidation compartments are respectively provided with a water inlet and a water outlet which are communicated with the inside of the catalytic oxidation pond (1), a plurality of groups of electrocatalytic oxidation devices (3) in each row are respectively distributed in each row of electrocatalytic oxidation compartments in a one-to-one correspondence manner, the upper end and the lower end of a shell (31) of each electrocatalytic oxidation device (3) are respectively provided with the water exchange holes, two adjacent shells (31) are communicated through the water exchange holes which are close to each other in the same row, the electrolytic baskets (32) connected with the anode and the electrolytic baskets (32) connected with the cathode in the two vertically adjacent shells are respectively communicated through connecting pipelines penetrating through the two corresponding shells (31).

6. The modular electrocatalytic oxidation wastewater treatment system as set forth in claim 5, wherein: and water flow guide nozzles are arranged at the water inlets and the water outlets at the upper end and the lower end of each row of electrocatalytic oxidation compartments.

7. The modular electrocatalytic oxidation wastewater treatment system as set forth in claim 4, wherein: a plurality of layers of mutually independent and closed similar electrocatalytic oxidation interlayers are limited on the structural supporting frame (2) through a partition board horizontally arranged on the structural supporting frame, a water inlet and a water outlet communicated with the inside of the catalytic oxidation pond (1) are respectively arranged on each similar electrocatalytic oxidation interlayer, a plurality of groups of electrocatalytic oxidation devices (3) on each layer are connected in series in the similar electrocatalytic oxidation interlayers on the corresponding layers according to the spatial position sequence, and the shell (31) of each electrocatalytic oxidation device (3) is respectively provided with the water exchange holes at two sides of the serial connection direction, and the two adjacent shells (31) are communicated through the water exchange holes which are close to each other, in the same layer, the two adjacent electrolytic baskets (32) connected with the anode and the electrolytic baskets (32) connected with the cathode are respectively communicated through connecting pipelines penetrating through the two corresponding shells (31).

8. The modular electrocatalytic oxidation wastewater treatment system as set forth in claim 7, wherein: and water flow guide nozzles are respectively arranged at the water inlet and the water outlet of each electrocatalytic oxidation interlayer.

9. A modular electrocatalytic oxidation wastewater treatment system as set forth in any one of claims 1-3 wherein: the anode electrode plate (4) and the cathode electrode plate (5) are respectively erected at the upper end of the catalytic oxidation tank (1).