Box-type electrochemical reaction device for denitrification and decolorization

Abstract

The utility model relates to the technical field of electrochemical wastewater treatment, in particular to a box-type electrochemical reaction device for denitrification and decolorization, which comprises a treatment box, a plurality of slots arranged in the treatment box at intervals, and electrode plugging modules vertically inserted in the slots, a water inlet pipe is arranged on the side wall of the bottom of the treatment box, and a water outlet pipe is arranged at the top of the treatment box; and the electrode plugging module comprises an outer frame body matched with the slot, an electrode plate assembled in the outer frame body, and an electrode wiring terminal arranged at the top of the outer frame body and connected with the electrode plate. According to the utility model, the electrode plugging module comprises an outer frame body matched with the slot, and an electrode plate assembled in the outer frame body; the electrode plugging modules can be installed in the slots of the treatment box in a split manner, so that the electrode plates can be conveniently and rapidly installed or disassembled, the maintenance efficiency of the electrode plates is improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electrochemical wastewater treatment technology, and in particular to a box-type electrochemical reaction device for denitrification and decolorization. Background Technology

[0002] In the prior art, application number 201820760562.X provides a three-dimensional electrochemical reactor, including a tank. One end of the tank has an inlet, and a first solenoid valve is installed on the inlet. The tank interior has a front baffle and a rear baffle, with an oxidation reaction zone between the front and rear baffles. The front and rear baffles are respectively connected to an inlet water storage tank and an outlet water storage tank between them and the inner wall of the tank. A filter plate is installed in the inlet water storage tank. An inlet hole is opened at the bottom of the front baffle. A porous support plate is installed in the space between the front and rear baffles. An outlet water passage is opened at the top of the rear baffle. An electrode cathode and an electrode anode are installed inside the oxidation reaction zone. It employs a design that fills the space between the electrode anode and electrode cathode with a three-dimensional electrode. Under the action of an external electric field, the large surface area of ​​the three-dimensional electrode is used to effectively oxidize and redox wastewater, thereby achieving effective wastewater treatment.

[0003] However, existing electrode plates and housings are usually fixed. As the electrode plates work for a long time, corrosion or deposits are likely to appear on the battery plates, which requires periodic replacement of the electrode plates. Current technology only requires complete shutdown and disassembly, resulting in long maintenance cycles and high costs. Utility Model Content

[0004] The purpose of this invention is to provide a box-type electrochemical reaction device for denitrification and decolorization, which solves the problem that conventional devices with fixed electrode plates and boxes are inconvenient to assemble, disassemble and maintain.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model provides a box-type electrochemical reaction device for denitrification and decolorization, including a processing box, multiple slots spaced apart in the processing box, and electrode plug-in modules vertically inserted into each of the slots;

[0007] A water inlet pipe is provided on the bottom side wall of the treatment tank, and a water outlet pipe is provided on the top of the treatment tank;

[0008] The electrode insertion module includes an outer frame adapted to the slot, an electrode plate assembled in the outer frame, and an electrode terminal block disposed on the top of the outer frame and connected to the electrode plate.

[0009] Furthermore, a partition is provided inside the processing box; and the processing box is divided into an upper-level interconnected reaction chamber and an overflow chamber by the partition.

[0010] Furthermore, a plurality of slots are provided in the reaction chamber; wherein the slots include two side wall U-shaped grooves provided in the inner wall of the processing box, and a bottom U-shaped groove connecting the two side wall U-shaped grooves, the bottom U-shaped groove being higher than the bottom of the processing box.

[0011] Furthermore, the water outlet pipe is provided at the top of the treatment tank and directly above the overflow chamber.

[0012] Furthermore, a slag discharge pipe is installed at the bottom of the reaction chamber, and a solenoid valve is installed on the slag discharge pipe.

[0013] Furthermore, a plurality of mounting slots are provided on the top of the processing box and directly above the slot.

[0014] Furthermore, the electrode insertion module is adapted to be inserted into the slot through the assembly groove, and an overflow port is provided on the outer frame and above the electrode plate.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] The electrode plug-in module of this utility model includes an outer frame adapted to the slot and an electrode plate assembled in the outer frame. The electrode plug-in module can be installed separately in the slot of the processing box, thereby facilitating convenient installation or disassembly, improving the maintenance efficiency of the electrode plate and reducing maintenance costs. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the internal structure of the box-type electrochemical reaction device for denitrification and decolorization according to this utility model;

[0019] Figure 2 This is an external schematic diagram of the box-type electrochemical reaction device for denitrification and decolorization according to this utility model;

[0020] Figure 3 This is a schematic diagram of the assembly of the electrode plate module inside the box-type electrochemical reaction device for denitrification and decolorization according to this utility model;

[0021] Figure 4 This is a schematic diagram showing the disassembled electrode module in the box-type electrochemical reaction device for denitrification and decolorization according to this invention.

[0022] Explanation of reference numerals in the attached drawings: 1. Processing tank; 11. Inlet pipe; 12. Outlet pipe; 13. Sewage pipe; 14. Assembly slot; 2. Partition plate; 21. Reaction chamber; 22. Overflow chamber; 3. Slot; 4. Electrode plate; 5. Electrode insertion module; 51. Electrode terminal; 52. Outer frame; 53. Overflow port. Detailed Implementation

[0023] refer to Figure 1 and Figure 2 This embodiment discloses a box-type electrochemical reaction device for denitrification and decolorization, including a processing box 1, a plurality of slots 3 spaced apart in the processing box 1, and electrode plug-in modules 5 vertically inserted into each of the slots 3; a water inlet pipe 11 is installed on the bottom side wall of the processing box 1, and a water outlet pipe 12 is installed on the top of the processing box 1; the electrode plug-in module 5 includes an outer frame 52 adapted to the slots 3, an electrode plate 4 assembled in the outer frame 52, and an electrode terminal block 51 installed on the top of the outer frame 52 and connected to the electrode plate 4.

[0024] This embodiment describes an electrochemical reactor specifically designed for advanced wastewater treatment. It possesses unique hydraulic characteristics, utilizes a multi-element catalyst, and exhibits highly efficient oxidation-reduction properties. It can effectively remove pollutants such as COD, ammonia, and nitrate nitrogen from wastewater, while also performing denitrification, total nitrogen removal, sterilization, and heavy metal ion removal. This product features a compact design, a small footprint, and is equipped with a PLC electrical control system, enabling automated advanced wastewater treatment.

[0025] In this embodiment, the influent COD is required to be less than 400 mg / L, and the effluent COD can reach 50-200 mg / L depending on the load; the wastewater is required to have a certain salinity and electrolyte concentration, and the conductivity is recommended to be 1000-50000 uS / cm.

[0026] Multiple electrode insertion modules 5 enable the rapid installation or removal of electrode plates 4 within the processing box 1.

[0027] refer to Figure 1 The adjacent electrode terminals 51 of each electrode plate 4 are respectively connected to positive and negative power electrodes.

[0028] refer to Figure 1 A partition 2 is installed inside the processing box 1; and the processing box 1 is divided into an upper-level interconnected reaction chamber 22 and an overflow chamber 21 by the partition 2.

[0029] refer to Figure 3Multiple slots 3 are provided in the reaction chamber 22; wherein the slot 3 includes two side wall U-shaped grooves installed on the inner wall of the treatment box 1 and a bottom U-shaped groove connecting the two side wall U-shaped grooves. The bottom U-shaped groove is higher than the bottom of the treatment box 1, so as to facilitate the entry of water into the reaction chamber 22 and flow from bottom to top to pass through each electrode plate 4, so as to realize electrochemical reaction treatment.

[0030] The water outlet pipe 12 is installed on the top of the treatment tank 1 and directly above the overflow chamber 21.

[0031] refer to Figure 2 A drain pipe 13 for slag removal is installed at the bottom of the reaction chamber 22, and a solenoid valve is installed on the drain pipe 13 to facilitate the periodic removal of deposits from the electrode plate 4 in the reaction chamber 22.

[0032] In this embodiment, a plurality of mounting slots 14 are provided on the top of the processing box 1 and directly above the slot 3. The electrode insertion module 5 is fitted into the slot 3 through the mounting slots 14, and an overflow port 53 is provided on the outer frame 52 and above the electrode plate 4. In use, the electrochemically treated liquid gradually enters the overflow chamber 21 through the overflow port 53. In this embodiment, the slot 3 ensures that the electrode insertion module 5 is accurately positioned and adjacent electrode plates 4 are aligned.

[0033] In this embodiment, electrochemical catalytic reduction is used to remove nitrates by utilizing hydrogen generated from electrolysis as a reducing agent and a catalyst supported on the electrode material. This method eliminates the need for an external reducing agent; instead, it relies on the electrochemical electrolysis of the reaction solution to generate hydrogen gas, reducing operating costs and eliminating the safety hazards associated with using an external hydrogen source. Compared to other catalytic reduction technologies, electrochemical catalytic reduction is a more efficient, safer, and more economical technology for treating nitrate nitrogen pollution.

[0034] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A box-type electrochemical reaction device for denitrification and decolorization, characterized in that: It includes a processing box (1), a plurality of slots (3) spaced apart in the processing box (1), and an electrode plug-in module (5) vertically inserted into each of the slots (3); A water inlet pipe (11) is provided on the bottom side wall of the treatment tank (1), and a water outlet pipe (12) is provided on the top of the treatment tank (1); The electrode insertion module (5) includes an outer frame (52) adapted to the slot (3), an electrode plate (4) assembled in the outer frame (52), and an electrode terminal (51) disposed on the top of the outer frame (52) and connected to the electrode plate (4).

2. The box-type electrochemical reaction device for denitrification and decolorization according to claim 1, characterized in that: A partition (2) is provided inside the processing box (1); and the processing box (1) is divided into an upper-level interconnected reaction chamber (22) and an overflow chamber (21) by the partition (2).

3. The box-type electrochemical reaction device for denitrification and decolorization according to claim 2, characterized in that: A plurality of slots (3) are provided in the reaction chamber (22); wherein the slot (3) includes two side wall U-shaped grooves provided in the inner wall of the processing box (1) and a bottom U-shaped groove connecting the two side wall U-shaped grooves, and the bottom U-shaped groove is higher than the bottom of the processing box (1).

4. The box-type electrochemical reaction device for denitrification and decolorization according to claim 2, characterized in that: The water outlet pipe (12) is provided on the top of the treatment tank (1) and directly above the overflow chamber (21).

5. The box-type electrochemical reaction device for denitrification and decolorization according to claim 3, characterized in that: A drain pipe (13) for slag discharge is provided at the bottom of the reaction chamber (22), and a solenoid valve is provided on the drain pipe (13).

6. The box-type electrochemical reaction device for denitrification and decolorization according to claim 1, characterized in that: Multiple assembly slots (14) are provided on the top of the processing box (1) and directly above the slot (3).

7. The box-type electrochemical reaction device for denitrification and decolorization according to claim 6, characterized in that: The electrode insertion module (5) is adapted to be inserted into the slot (3) through the assembly groove (14), and an overflow port (53) is provided on the outer frame (52) and above the electrode plate (4).

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