A kind of electrocatalytic treatment equipment for high organic wastewater

Abstract

The present invention belongs to sewage treatment equipment, and discloses an electrocatalytic treatment equipment for high-organic wastewater, which is a partial treatment link in a single sewage treatment process, and is powered by an external power supply to oxidize the incoming treated wastewater, including an oxidation tank, wherein the oxidation tank has a water inlet / outlet, and is connected to external facilities through a pipeline, and a suspended anode structure and a cathode structure are arranged in the oxidation tank, and are connected to the external power supply through a cable; the concentration tank also includes a heat pump evaporator, which is connected to the water inlet of the oxidation tank through a pumping pipeline; a control device is arranged outside, and the pumping pipeline is set by the control device.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an electrocatalytic treatment device for high-organic wastewater. Background Art

[0002] Electrochemical water treatment technology is a green water treatment technology. Its main principle is to use the potential difference to regulate the flow of electrons, so that pollutants can complete the degradation or transformation process at the electrode interface or in the solution to achieve water purification. Electrochemical water treatment technology has unique advantages over traditional water treatment technology: the reactants are electrons, no chemical agents are added, and there is no secondary pollution. The shape and size of the electrode can be precisely controlled; the reactor type is flexible and changeable, and there is no rigid requirement for the water treatment site; it can be used alone or in combination with other technologies. The required equipment is simple and the operation is simple (just control the current or voltage); the conditions are simple (it can be treated at normal temperature and pressure) and the post-treatment is simple (very little "garbage" is generated during the treatment process). Controllable. No harsh reaction conditions are required, the manpower requirements are very low, and it is easy to control automatically. The above technical advantages have made electrochemical water treatment technology gradually become a research hotspot in the field of water pollution treatment in recent years.

[0003] Common electrochemical water treatment technologies include: electrocatalytic oxidation of organic matter, electrochemical scale removal, electroflotation / electroflocculation, electrochemical disinfection (acidic electrolysis of water), electrodialysis, microbial fuel cell technology, etc. The core of this technology is to allow the strong oxidizing substances (represented by hydroxyl radicals OH) produced on the anode surface to fully contact and react with the organic molecules in the solution, so that the organic molecules are gradually oxidized and decomposed until carbon dioxide and water are formed. It is worth noting that the contact between this strong oxidizing substance and the organic molecules is crucial. Since the stability of strong oxidizing substances represented by hydroxyl radicals is relatively poor, this contact can only be achieved through the migration of organic molecules to the electrode / solution interface, which makes the mass transfer process the most important limiting step of the electrocatalytic oxidation technology.

[0004] In order to improve the electrolytic catalytic efficiency in the prior art, the anode material and the mass transfer material are optimized. However, no matter how the electrode material is replaced, its use in sewage treatment will produce large changes due to changes in the quality of the influent water. When the organic concentration of sewage with a preset organic concentration fluctuates, the efficiency and power consumption of the electrolysis equipment operating at rated power cannot be balanced. Moreover, even if more special anode materials are used, they will continue to be consumed during the treatment process and will still need to be replaced periodically. Most of the existing structures use an integrated structural design. If they need to be replaced, the entire electrode structure or electrolytic cell structure needs to be disassembled and replaced, and the operation and maintenance costs are relatively high. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the present invention provides an electrocatalytic treatment device for high-organic wastewater. By arranging a concentration tank in front of the oxidation tank, the sewage can be evaporated quickly under low power consumption through low-temperature heat pump evaporation, thereby increasing the organic matter content to improve the treatment efficiency in the electrolytic catalytic process, and more organic matter can be treated under unit power consumption.

[0006] The technical solution adopted by the present invention is:

[0007] In the first aspect, the present invention discloses an electrocatalytic treatment device for high-organic wastewater, which is a partial treatment link in a single sewage treatment process, and performs oxidation treatment on the incoming treated wastewater through power supply from an external power source, comprising an oxidation tank, wherein the oxidation tank has a water inlet / outlet, is connected to external facilities through a pipeline, and a suspended anode structure and a cathode structure are arranged in the oxidation tank, and are connected to the external power source through a cable;

[0008] It also includes a concentration tank, which is provided with a heat pump evaporator and is connected to the water inlet of the oxidation tank through a pumping pipeline;

[0009] A control device is provided outside, and the pumping pipeline is set up by the control device.

[0010] In combination with the first aspect, the present invention discloses a first implementation of the first aspect, wherein an evaporation pipe connected to a heat pump evaporator is provided in the concentration tank;

[0011] The heat pump evaporator comprises an inflow chamber and a reflux chamber, both of which are provided with

[0012] The evaporation tube comprises a plurality of bent tubes, the ends of which are fixed on the end surface of the heat pump evaporator and respectively connected to the inflow chamber and the reflux chamber. The fluid in the inflow chamber first enters the evaporation tube and then enters the reflux chamber for discharge.

[0013] In combination with the first embodiment of the first aspect, the present invention discloses a second embodiment of the first aspect, wherein the evaporation tube has an extension portion and a bending portion, and a plurality of gantry frames are provided on the extension portion at equal intervals, and the evaporation tube is supported by the gantry frames fixed to the bottom surface of the concentration tank.

[0014] In combination with the first embodiment of the first aspect, the present invention discloses a third embodiment of the first aspect, wherein the concentration tank performs periodic concentration operation by controlling the inlet and outlet water volumes, and a COD monitoring module is provided in the concentration tank, and when the COD value of the organic sewage entering the concentration tank at a single time is lower than 50000 mg / L, the valve is controlled to make the water volume entering the concentration tank reach 80% of the volume, and then the heat pump evaporator is turned on for concentration;

[0015] When the COD value of the sewage in the concentration tank is higher than mg / L and reaches 110%-120%, the pumping mechanism is started to send the concentrated sewage into the oxidation tank for electrolytic treatment. When the discharge volume of the concentrated sewage is greater than 90%, the water inlet of the concentration tank is opened, and the COD monitoring module continues to detect the inlet COD value for the next concentration.

[0016] In combination with the first aspect or the first to third embodiments of the first aspect, the present invention discloses a fourth embodiment of the first aspect, wherein the cathode structure is a plurality of cathode plates arranged at equal intervals in the oxidation tank, the cathode plates are fixedly connected to the inner wall of the oxidation tank, and are connected to an external power supply via a cable;

[0017] There is a separate electrolytic cell between adjacent cathode plates, and the anode structure is arranged in the electrolytic cell.

[0018] In combination with the fourth embodiment of the first aspect, the present invention discloses a fifth embodiment of the first aspect, wherein the anode structure is a columnar anode rod, the anode rod is a hollow structure of a titanium alloy, and its surface is coated with a ruthenium-iridium coating or a platinum dioxide coating.

[0019] In combination with the fifth embodiment of the first aspect, the present invention discloses a sixth embodiment of the first aspect, wherein a plurality of suspension racks corresponding to the electrolytic cells are provided above the oxidation tank, and a plurality of mounting points are provided on the suspension racks, and an anode rod is suspended at each mounting point.

[0020] In combination with the sixth implementation of the first aspect, the present invention discloses a seventh implementation of the first aspect, wherein the mounting point is a slot provided on the suspension frame, each slot is provided with a through hole, and the anode rod is suspended in the oxidation tank by providing a suspension rod extending into the oxidation tank in the through hole;

[0021] A clamping block is provided at the end of the suspension rod on the suspension frame for fixing, and the clamping block is connected with the clamping slot through a limiting connection.

[0022] In combination with the sixth implementation of the first aspect, the present invention discloses an eighth implementation of the first aspect, wherein the anode rod comprises a cylindrical fixing frame, and a plurality of annular hollow sections arranged on the fixing frame;

[0023] The fixed frame includes a plurality of side strips and a plurality of intermediate rings arranged along the length direction of the side strips, and the hollow sections are embedded in the side strips of adjacent intermediate rings.

[0024] In combination with the eighth implementation of the first aspect, the present invention discloses a ninth implementation of the first aspect, wherein a central column is provided in the middle of one end of the fixed frame, and the length of the central column is less than the length of the anode rod;

[0025] The central column is provided with a plurality of connection parts connected with the side strips, and a screw hole is provided in the middle of the central column, which is connected with the end of the suspension rod through the screw hole.

[0026] The beneficial effects of the present invention are:

[0027] (1) The present invention regulates the sewage entering the oxidation tank by cooperating with the concentration tank and the oxidation tank. Since the front-end equipment filters and processes some substances other than organic matter in the sewage, the concentration of organic matter in the continuous influent water will fluctuate. The concentration tank can ensure that the concentration of organic matter in the sewage entering the oxidation tank can be maintained within the efficiency range of the optimal electrolytic catalytic treatment.

[0028] (2) The detachable anode rod structure of the present invention can be replaced and processed without changing other structures of the electrolytic cell, and removing a single anode rod will not have a significant impact on the electrolysis process of the electrolytic cell;

[0029] (3) The present invention optimizes the structure of the anode rod, thereby ensuring good fixing stability while maximizing the contact area with sewage. After the coating with catalytic effect is consumed to a certain extent, it can be taken out, cleaned and wiped off the remaining coating, and then dipped in the catalytic coating again for use, thereby reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a side view of an integrated device solution adopted in an embodiment of the present invention;

[0031] Figure 2 is a top view of an integrated device solution used in an embodiment of the present invention;

[0032] Figure 3 It is an axonometric diagram of an integrated device solution in an embodiment of the present invention;

[0033] Figure 4 It is a front view of an integrated device solution adopted in an embodiment of the present invention;

[0034] Figure 5 is a first axonometric diagram of an electrode structure using hexagonal hollowing in an embodiment of the present invention;

[0035] Figure 6 is a front view of a hexagonal hollowed-out electrode structure in an embodiment of the present invention;

[0036] Figure 7 is a second axonometric diagram of an electrode structure using hexagonal hollowing in an embodiment of the present invention;

[0037] Figure 8 It is a top view of a hexagonal hollowed-out electrode structure in an embodiment of the present invention.

[0038] In the figure: 1-concentration tank, 2-oxidation tank, 3-heat pump evaporator, 4-sewage pump, 5-water outlet pipe, 6-first pipeline, 7-working medium circulation pipe, 8-evaporation pipe, 9-suspension frame, 10-block, 11-cathode plate, 12-anode rod, 13-second pipeline, 14-suspender rod, 15-center column, 16-side bar, 17-hollow section, 18-middle ring. DETAILED DESCRIPTION

[0039] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0043] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0044] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0045] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] Embodiment 1:

[0047] This embodiment discloses an electrocatalytic treatment device for high-organic wastewater, which is a partial treatment link in a single sewage treatment process and performs oxidation treatment on incoming treated wastewater through power supply from an external power source.

[0048] The entire treatment process of this embodiment includes multiple pre-grid tanks and sedimentation tanks for filtering most of the solid particles and suspended matter in the sewage, while the sewage entering the treatment equipment of this embodiment minimizes the impact of other impurities on the treatment process.

[0049] Specifically, the treatment equipment in this embodiment is an open-type equipment, which is formed into a fixed structure by digging a pit or building a structure on the ground, wherein the functional division includes an oxidation pool 2, wherein the oxidation pool 2 has a water inlet / outlet, is connected to external facilities through a pipeline, and a suspended anode structure and a cathode structure are provided in the oxidation pool 2, which are connected to an external power source through a cable;

[0050] It also includes a concentration tank 1, on which a heat pump evaporator 3 is provided, which is connected to the water inlet of the oxidation tank 2 through a pumping pipeline; a control device is provided outside, and the pumping pipeline is controlled by the control device.

[0051] Furthermore, an evaporation tube 8 connected to the heat pump evaporator 3 is provided in the concentration tank 1; the heat pump evaporator 3 includes an inlet chamber and a reflux chamber, and the inlet chamber and the reflux chamber are both provided with the evaporation tube 8 including a plurality of bent pipes, the ends of which are fixed on the end face of the heat pump evaporator 3 and connected to the inlet chamber and the reflux chamber respectively, and the fluid in the inlet chamber first enters the evaporation tube 8 and then enters the reflux chamber for discharge.

[0052] Furthermore, the evaporation tube 8 has an extension portion and a bending portion, and a plurality of door frames are provided at equal intervals on the extension portion, and the evaporation tube 8 is supported by the door frames fixed to the bottom surface of the concentration tank 1 .

[0053] Furthermore, the concentration tank 1 performs periodic concentration operations by controlling the inlet and outlet water volumes, and a COD monitoring module is provided in the concentration tank 1. When the COD value of the organic sewage entering the concentration tank 1 at a single time is lower than 50,000 mg / L, the valve is controlled to allow the water volume entering the concentration tank 1 to reach 80% of the volume, and then the heat pump evaporator 3 is turned on for concentration.

[0054] When the COD value of the sewage in the concentration tank 1 is higher than mg / L and reaches 110%-120%, the pumping mechanism is started to send the concentrated sewage into the oxidation tank 2 for electrolytic treatment. After the discharge of the concentrated sewage is greater than 90%, the water inlet of the concentration tank 1 is opened, and the COD monitoring module continues to detect the inlet COD value for the next concentration.

[0055] Furthermore, the cathode structure is a plurality of cathode plates 11 arranged at equal intervals in the oxidation tank 2, the cathode plates 11 are fixedly connected to the inner wall of the oxidation tank 2, and are connected to an external power source through cables; a separate electrolytic cell is provided between adjacent cathode plates 11, and the anode structure is provided in the electrolytic cell. The anode structure is a columnar anode rod 12, which is a hollow structure of a titanium alloy, and its surface is coated with a ruthenium-iridium coating or a platinum dioxide coating.

[0056] Furthermore, a plurality of suspension racks 9 corresponding to the electrolytic cells are provided above the oxidation tank 2, and a plurality of mounting points are provided on the suspension racks 9, and an anode rod 12 is suspended at each mounting point. The mounting points are slots provided on the suspension racks 9, and a through hole is provided in each slot, and the anode rod 12 is suspended in the oxidation tank 2 by providing a suspension rod 14 extending into the oxidation tank 2 in the through hole; and a clamping block 10 is provided at the end of the suspension rod 14 on the suspension rack 9 for fixing, and the clamping block 10 is connected with the slot by clamping and limiting.

[0057] The anode rod 12 includes a cylindrical fixed frame and a plurality of annular hollow sections 17 arranged on the fixed frame; the fixed frame includes a plurality of side strips 16 and a plurality of intermediate rings 18 arranged along the length direction of the side strips 16, and the hollow sections 17 are embedded in the side strips 16 of the adjacent intermediate rings 18. A central column 15 is provided in the middle of one end of the fixed frame, and the length of the central column 15 is less than the length of the anode rod 12; the central column 15 is provided with a plurality of connection parts connected with the side strips 16, and a screw hole is provided in the middle of the central column 15, and is connected with the end of the suspension rod 14 through the screw hole.

[0058] It should be noted that the anode rod 12 has a certain length and is only suspended by a hanging pipe, that is, one end is fixed. In order to ensure its structural strength and lightweight requirements, the polygonal hollow section 17 with a large specific surface area in the middle is mainly used for contact discharge catalytic oxidation, and the several side strips 16 and the middle ring 18 inside are used to form an internal frame, which can fix the several hollow sections 17 and also ensure that there is a large cavity inside, so that sewage can directly enter the interior and contact the inner surface of the hollow section 17.

[0059] The entire device will be equipped with sensors on each anode rod 12 to detect power consumption, and a maximum service life will be set for each anode rod 12. When the service life reaches the end, the anode rod 12 will be taken out and inspected. If it still meets the service standards, it will continue to be used. If its surface coating can no longer meet the service requirements, it will be cleaned and wiped off, and it will be dip-coated again and used again.

[0060] In another embodiment, if Figure 1-Figure 4 As shown in the figure, a device different from the above-mentioned embodiment is shown. The processing equipment in this real-time mode is not a fixed structure formed by civil engineering, but an independent open tank structure formed by metal or fiberglass reinforced plastics.

[0061] As can be seen in the figure, both the oxidation tank 2 and the concentration tank 1 are open tanks, which are fixed on a fixed surface by a bracket, and the fixed surface is generally the ground. A protruding structure is provided on one side of the tank body of the concentration tank 1, which is the heat pump evaporator 3. The heat pump evaporator 3 in this embodiment has two upper and lower cavities, namely the inflow cavity and the reflux cavity. An opening that connects the two cavities at the same time is provided at the port on the right side, and is sealed and shielded by a lid with a flange, and the interior is cleaned and maintained from the opening at regular intervals.

[0062] In the concentration tank 1, only evaporation tubes 8 are arranged. The evaporation tubes 8 have multiple groups and can cover most of the volume of the concentration tank 1. The heat pump evaporator 3 is connected to the external system through two working fluid circulation tubes 7. The external equipment is mainly a water tank, a compressor, a condenser and an expansion valve, which are transferred to the evaporation tubes 8 and contact the sewage in the concentration tank 1, and the sewage is quickly evaporated at about 37°C, and its maximum concentration ratio is within 70-80%. However, the organic matter concentration content of the sewage entering the concentration tank 1 is not low, so the concentration tank 1 is only used as a rapid concentration device, and its concentration time is short. Even if the periodic water inlet method is adopted, the treatment of the continuously entering sewage can be met by setting a suitable volume ratio.

[0063] In this embodiment, the COD value of the incoming wastewater is generally 5000-20000 mg / L. In the above content, a real-time monitoring device for COD is set at the corresponding positions of the concentration tank 1 and the oxidation tank 2. It has one or more sampling ends inside the tank body, and a cabinet-type device is provided outside for real-time analysis and monitoring of samples from multiple sampling ends. The set PLC control module will be regulated according to the data. The concentration time in the concentration tank 1 is based on the internal COD value reaching 50000 mg / L. When it exceeds the standard by more than 10%, the water in the concentration tank 1 is concentrated and passed into the oxidation tank 2 for treatment. The time node of this pretreatment also meets the time node of the electrolytic treatment in the oxidation tank 2, avoiding the high power consumption caused by the inadequate electrolysis process due to the continuous inflow of water.

[0064] Furthermore, in this embodiment, the structure of the oxidation pool 2 is optimized.

[0065] Among them, the oxidation tank 2 is consistent with the concentration tank 1 and adopts the same fiberglass tank structure. The figure is only used to show its structure and relative position, and the size is not limited. The actual size and proportion are not used as a reference. The upper part of the oxidation tank 2 is an open design, and its interior is divided into two inner and outer tank bodies by a partition. The internal tank body accounts for a large proportion, about 85%, as the main tank body, which is divided into several electrolytic cells by several electrode plates.

[0066] The outer tank body is an annular area formed by partitions, and its bottom is connected to the inner tank body through a plurality of through holes arranged on the partitions. The pumping mechanism includes a sewage pump 4, a first pipe 6 and a second pipe 13 in the figure, which is connected to the bottom of the concentration tank 1 through the first pipe 6 and connected to the upper part of the inner tank body of the oxidation tank 2 through the second pipe 13.

[0067] Since the internal cell body is divided into several electrolytic cell structures by the cathode plate 11, a water distribution trough is arranged horizontally above all electrolytic cells at the opening of the second pipeline 13 in the internal cell body. The sewage entering from the second pipeline 13 can enter each electrolytic cell through the water distribution trough to achieve a distribution effect.

[0068] Since the bottom of the internal tank body is connected to the external tank body, the sewage flowing in from the upper part can enter the external tank body after reacting near the anode rod 12, and a detection port of the COD monitoring device is provided at the upper part of the external tank body. When the COD index of the sewage there is less than the set threshold, it can be discharged. The discharge outlet pipe 5 is provided with a solenoid valve for control, which is not shown in the figure.

[0069] It is worth noting that, similar to the above embodiment, the oxidation pool 2 is provided with a plurality of embedded grooves, and the suspension frame 9 is a channel steel structure, which can be embedded in the corresponding embedded grooves on both sides to achieve clamping, and a baffle is provided at each end of the suspension frame 9 to prevent it from moving along its length direction in the embedded groove. Each suspension frame 9 is provided with a plurality of clamping grooves, and each clamping groove is provided with a clamping block 10, and the middle of the clamping block 10 is a through hole, and the end of the suspension rod 14 passes through the through hole and is fixed with a bolt at its end.

[0070] The anode rod 12 in this embodiment is made of hard material, and can always remain in a vertical state when one end is fixed. However, in order to avoid direct contact between the anode rod 12 and the cathode plate 11, a fixing seat is provided at the bottom of the suspension frame 9, and the suspension rod 14 passes through the fixing seat and the clamping block 10 of the same axis at the same time, thereby realizing the limitation of two parts and preventing the problem of instability caused by single-point fixing.

[0071] In another embodiment, a metal mesh is provided between all anode rods 12 in the electrolytic cell to form an integrated structure, and the metal mesh and the anode rods 12 are also made of titanium alloy, and the surface of the metal mesh is coated with an electrocatalytic oxidation material.

[0072] The present invention is not limited to the above optional implementations, and anyone can derive other various forms of products under the enlightenment of the present invention. The above specific implementations should not be understood as limiting the scope of protection of the present invention. The scope of protection of the present invention should be based on the definition in the claims, and the description can be used to interpret the claims.

Claims

1. An electrocatalytic treatment device for high-organic wastewater, which is part of the treatment process in a single sewage treatment process, oxidizes the incoming treated wastewater through an external power supply, and is characterized by: The oxidation pond (2) comprises an oxidation pond (2), wherein the oxidation pond (2) has a water inlet / outlet and is connected to external facilities via a pipeline; a suspended anode structure and a cathode structure are provided in the oxidation pond (2) and are connected to an external power source via a cable; It also comprises a concentration tank (1), wherein a heat pump evaporator (3) is provided on the concentration tank (1) and is connected to the water inlet of the oxidation tank (2) through a pumping pipeline; A control device is provided outside, and the pumping pipeline is set by the control device; The cathode structure is a plurality of cathode plates (11) arranged at equal intervals in the oxidation tank (2), wherein the cathode plates (11) are fixedly connected to the inner wall of the oxidation tank (2) and connected to an external power source via a cable; A separate electrolytic cell is provided between adjacent cathode plates (11), and the anode structure is arranged in the electrolytic cell; The anode structure is a columnar anode rod (12), the anode rod (12) is a hollow structure of a titanium alloy, and its surface is coated with a ruthenium-iridium coating or a platinum dioxide coating; A plurality of suspension racks (9) corresponding to the electrolytic cells are provided above the oxidation pool (2), the suspension racks (9) being provided with a plurality of mounting points, and an anode rod (12) is suspended at each mounting point; The mounting point is a slot provided on the suspension frame (9), each slot having a through hole, and the anode rod (12) is suspended in the oxidation tank (2) by providing a suspension rod (14) in the through hole and extending into the oxidation tank (2); A clamping block (10) is provided at the end of the suspension rod (14) on the suspension frame (9) for fixing, and the clamping block (10) is connected to the clamping slot in a limiting manner; The anode rod (12) comprises a cylindrical fixing frame and a plurality of annular hollow sections (17) arranged on the fixing frame; The fixed frame comprises a plurality of side strips (16), and also comprises a plurality of intermediate rings (18) arranged along the length direction of the side strips (16), and the hollow sections (17) are embedded in the side strips (16) of adjacent intermediate rings (18); A central column (15) is provided in the middle of one end of the fixed frame, and the length of the central column (15) is less than the length of the anode rod (12); The central column (15) is provided with a plurality of connection parts connected to the side strips (16), and a screw hole is provided in the middle of the central column (15) and is connected to the end of the suspension rod (14) through the screw hole.

2. The electrocatalytic treatment equipment for high-organic wastewater according to claim 1 is characterized in that: An evaporation pipe (8) connected to the heat pump evaporator (3) is provided in the concentration tank (1); The heat pump evaporator (3) comprises an inflow chamber and a reflux chamber, and the evaporation tube (8) comprises a plurality of bent tubes, the ends of which are fixed to the end surface of the heat pump evaporator (3) and respectively connected to the inflow chamber and the reflux chamber, and the fluid in the inflow chamber first enters the evaporation tube (8) and then enters the reflux chamber for discharge.

3. The electrocatalytic treatment equipment for high-organic wastewater according to claim 2 is characterized in that: The evaporation tube (8) has an extension portion and a bending portion, and a plurality of door-shaped frames are arranged at equal intervals on the extension portion. The evaporation tube (8) is supported by the door-shaped frames fixed to the bottom surface of the concentration tank (1).

4. The electrocatalytic treatment equipment for high-organic wastewater according to claim 2 is characterized in that: The concentration tank (1) performs periodic concentration operations by controlling the inflow and outflow of water, and a COD monitoring module is provided in the concentration tank (1). When the COD value of the organic sewage entering the concentration tank (1) at a time is lower than 50,000 mg / L, the valve is controlled to allow the water volume entering the concentration tank (1) to reach 80% of the volume, and then the heat pump evaporator (3) is turned on for concentration; When the COD value of the sewage in the concentration tank (1) is higher than 50,000 mg / L and reaches 110%-120%, the pumping mechanism is started to send the concentrated sewage into the oxidation tank (2) for electrolytic treatment, and when the discharge volume of the concentrated sewage is greater than 90%, the water inlet of the concentration tank (1) is opened, and the COD monitoring module continues to detect the COD value of the inlet water for the next concentration.

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