Iron-carbon catalytic Fenton reaction tank

Abstract

The utility model belongs to the technical field of wastewater treatment, and particularly relates to an iron-carbon catalytic Fenton reaction tank. Comprising a horizontal tank body, two sides of the horizontal tank body are provided with a water inlet and a water outlet, square tanks are distributed in the horizontal tank body and are communicated with one another, the lower part of each square tank is provided with a precipitation hopper, and a joist is fixed above each precipitation hopper. According to the utility model, the plurality of square pools which are transversely arranged are connected in series, a plurality of modularized iron-carbon fillers can be placed in each pool body, and the plurality of square pools can be flexibly provided with adding points of iron-carbon and Fenton hydrogen peroxide, so that the oxidation-reduction capability of an iron-carbon primary battery and the strong oxidation capability of Fenton are fully coupled; meanwhile, the iron-carbon filler of a single module can be hoisted by a walking type electric hoist to check the hardening condition or be replaced, so that the operation flexibility is greatly improved, the problem of maintenance and replacement of iron-carbon scaling is solved, and in addition, on the basis of retaining the original biochemical pool structure, rapid transformation can be realized through the serial pool body.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to an iron-carbon catalytic Fenton reactor. Background Technology

[0002] Among various advanced oxidation technologies for wastewater treatment, iron-carbon micro-electrolysis and Fenton technology have demonstrated highly efficient oxidation capabilities for recalcitrant organic matter, and are therefore widely used in wastewater treatment from coking, pharmaceutical, and chemical industries. These technologies utilize iron filings and carbon particles to form a micro-galvanic cell in an acidic environment, removing pollutants through electrochemical oxidation-reduction reactions (such as reducing nitrobenzene to aminobenzene) and electric field enrichment. Simultaneously, the iron anode dissolution produces… The nascent hydrogen generated at the cathode can oxidize and decompose organic matter, and improve the biodegradability of wastewater, under acidic conditions. and The reaction generates a strong oxidizing agent, hydroxyl radical ( ). ), which breaks down large organic molecules into carbon dioxide and water, producing Catalytic reduction to The process involves recycling to reduce reagent consumption. The synergistic effect of electrochemical enrichment and physical adsorption can effectively remove heavy metal ions and colloidal pollutants. Fenton oxidation further decomposes residual organic matter, improving treatment efficiency.

[0003] Existing iron-carbon Fenton reactors are generally tank-tower type series reactors. After the raw water is adjusted to acidity, it enters the iron-carbon packed tower. After aeration and reaction, the effluent enters the Fenton reaction tower, and then the effluent enters the sedimentation tank for alkali backflushing and flocculation. The tank-tower type packing is generally filled from top to bottom. The packing can only be removed from the top or manually cleaned after the liquid in the tower is emptied. The bottom packing needs to be completely removed from the top packing to observe and replace it. Since iron-carbon packing is prone to caking, the tank-tower structure makes it difficult to observe the caking situation and cannot replace it locally. The later replacement of packing is cumbersome. In addition, the tower type generally only has two stages in series, normally one iron-carbon and two Fenton, with fixed dosing points, which is not flexible enough.

[0004] Therefore, we propose an iron-carbon catalytic Fenton reactor to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides an iron-carbon catalytic Fenton reactor, which solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0009] A Fenton reaction vessel for iron-carbon catalysis includes a horizontal tank with inlet and outlet ports on both sides. Square pools are distributed within the tank and are interconnected. A sedimentation hopper is located at the bottom of each square pool, and a support beam is fixed above the sedimentation hopper. An aeration coil is mounted on the support beam, and iron-carbon packing material is clamped onto the support beam. Stacking feet are located around the bottom of the iron-carbon packing material, and lifting lugs are located around its top. The iron-carbon packing material is stacked in pairs via the stacking feet and lifting lugs. A cover plate is bolted to the top of the horizontal tank, and a dosing port is distributed on the cover plate. A support frame is installed at the rear of the horizontal tank, and a mobile electric hoist is installed on the inner top of the support frame.

[0010] Furthermore, the bottom of the sedimentation hopper is provided with a drain outlet, and a drain pipe is connected through the drain outlet.

[0011] Furthermore, the support beam is a rectangular frame structure, and limiting protrusions are provided around the support beam. The iron-carbon filler is snapped onto the limiting protrusions by stacked column feet.

[0012] Furthermore, at least six square pools are provided, and the dosing port corresponds to each square pool.

[0013] Furthermore, the cover plate is evenly distributed with pipe interfaces, and one end of the aeration coil extends outward from the pipe interface.

[0014] Furthermore, the horizontal tank has a slot on its rear side, into which the bracket is inserted and fixed by screws.

[0015] Furthermore, the mobile electric hoist includes a hanging rail and a fixed frame. The upper part of the fixed frame is equipped with rollers and a servo motor, and the output shaft of the servo motor is connected to the rollers. The rollers are located on the upper and lower sides of the hanging rail and are slidably connected to the hanging rail. The lower part of the fixed frame is equipped with a geared motor and a hoist winch, and the hoist winch is connected to the output shaft of the geared motor. A wire rope is wound on the hoist winch, and one end of the wire rope is connected to a hook.

[0016] Furthermore, an electrical control box is installed on the rear side of the mounting bracket, and both the servo motor and the geared motor are electrically connected to the electrical control box via wires.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides an iron-carbon catalytic Fenton reactor, which has the following beneficial effects:

[0019] This utility model is designed as multiple square pools arranged horizontally and connected in series. Each pool can hold several modular iron-carbon packing materials. The addition points of iron-carbon and Fenton hydrogen peroxide in the square pools can be flexibly set to fully couple the redox capacity of the iron-carbon galvanic cell and the strong oxidizing capacity of Fenton. At the same time, the iron-carbon packing material of a single module can be lifted by a mobile electric hoist to check the caking condition or replace it, which greatly improves the operational flexibility and solves the problem of iron-carbon scaling, maintenance and replacement. In addition, while retaining the original biological tank structure, rapid transformation can be achieved through the series-connected pools. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a side view of the present invention;

[0022] Figure 3 This is a partially enlarged view of the present invention;

[0023] Figure 4 This is a structural diagram of the walking electric hoist of this utility model.

[0024] In the diagram: 1. Horizontal tank; 2. Inlet and outlet; 3. Square tank; 4. Sedimentation hopper; 5. Support beam; 6. Aeration coil; 7. Iron-carbon packing; 8. Stacking column base; 9. Lifting lug; 10. Cover plate; 11. Dosing port; 12. Support frame; 13. Traveling electric hoist; 1301. Lifting rail; 1302. Fixed frame; 1303. Roller; 1304. Servo motor; 1305. Gear motor; 1306. Hoist winch; 1307. Wire rope; 1308. Hook; 1309. Electrical control box; 14. Sewage outlet; 15. Sewage pipe; 16. Limiting protrusion; 17. Pipe interface; 18. Slot. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example: Figures 1-4As shown in the figure, an embodiment of the present invention provides an iron-carbon catalytic Fenton reactor, comprising a horizontal tank 1, with inlet and outlet ports 2 on both sides of the horizontal tank 1, and square pools 3 distributed within the horizontal tank 1, the square pools 3 being interconnected. A sedimentation hopper 4 is provided at the bottom of each square pool 3, and a support beam 5 is fixed above the sedimentation hopper 4. An aeration coil 6 is mounted on the support beam 5, and iron-carbon packing material 7 is clamped onto the support beam 5. Stacking columns 8 are provided around the bottom of the iron-carbon packing material 7, and lifting lugs 9 are provided around its top. The iron-carbon packing material 7 is stacked in pairs via the stacking columns 8 and lifting lugs 9. A cover plate 10 is bolted to the top of the horizontal tank 1, and the cover plate 10 is divided into sections... The tank is equipped with a dosing port 11 and is designed as multiple square tanks 3 arranged horizontally and connected in series. Each tank can hold several modular iron-carbon packing materials 7. The dosing points of iron-carbon and Fenton hydrogen peroxide can be flexibly set in the several square tanks 3, which fully couples the oxidation-reduction capacity of the iron-carbon galvanic cell and the strong oxidation capacity of Fenton. At the same time, the iron-carbon packing material 7 of a single module can be lifted by a mobile electric hoist 13 to check the caking condition or replace it, which greatly improves the operational flexibility and solves the problem of iron-carbon scaling maintenance and replacement. In addition, while retaining the original biochemical tank structure, rapid transformation can be achieved through the series tanks. A support 12 is installed on the rear side of the horizontal tank 1, and a mobile electric hoist 13 is installed on the inner top of the support 12.

[0027] like Figure 1 As shown, in some embodiments, the bottom of the sedimentation hopper 4 is provided with a drain port 14, and a drain pipe 15 is connected through the drain port 14. The drain port 14 is used to discharge sediment, and the drain pipe 15 is used to connect to a drain pump, which pumps the sediment outward.

[0028] like Figure 3 As shown, in some embodiments, the support beam 5 is a rectangular frame structure, and the support beam 5 is provided with limiting protrusions 16 around its perimeter. The iron-carbon filler 7 is snapped onto the limiting protrusions 16 by stacking column feet 8. Through the cooperation between the limiting protrusions 16 and the stacking column feet 8, the iron-carbon filler 7 can be stably installed on the support beam 5.

[0029] like Figure 1 As shown, in some embodiments, at least six square pools 3 are provided, and the dosing port 11 corresponds to each square pool 3. The design consists of multiple square pools 3 arranged horizontally and connected in series. Each pool can hold several 1 cubic meter modular iron-carbon fillers 7. The dosing points of iron-carbon and Fenton hydrogen peroxide can be flexibly set in the several square pools 3 to fully couple the redox capacity of the iron-carbon galvanic cell and the strong oxidizing capacity of Fenton.

[0030] like Figure 1As shown, in some embodiments, pipe interfaces 17 are evenly distributed on the cover plate 10, and one end of the aeration coil 6 extends outward from the pipe interface 17. The pipe interface 17 mainly serves to avoid obstruction, so as to facilitate the installation of the aeration coil 6.

[0031] like Figure 2 As shown, in some embodiments, the horizontal tank 1 has a slot 18 on its rear side, the bracket 12 is inserted into the slot 18 and fixed by screws, the slot 18 is an assembly structure, used for the installation and fixing of the bracket 12.

[0032] like Figure 4 As shown, in some embodiments, the mobile electric hoist 13 includes a hanging rail 1301 and a fixed frame 1302. The upper part of the fixed frame 1302 is respectively equipped with rollers 1303 and a servo motor 1304, and the output shaft end of the servo motor 1304 is connected to the rollers 1303. The rollers 1303 are located on the upper and lower sides of the hanging rail 1301 and are slidably connected to the hanging rail 1301. The lower part of the fixed frame 1302 is respectively equipped with a reduction motor 1305 and a hoist winch 130. 6. The hoist winch 1306 is connected to the output shaft of the reduction motor 1305. A wire rope 1307 is wound on the hoist winch 1306, and a hook 1308 is connected to one end of the wire rope 1307. The roller 1303 is driven to rotate by the servo motor 1304, so that the roller 1303 moves laterally along the track of the lifting rail 1301. The hoist winch 1306 is driven to rotate by the reduction motor 1305, so that the hook 1308 is lifted or lowered by the wire rope 1307.

[0033] like Figure 4 As shown, in some embodiments, an electrical control box 1309 is installed on the rear side of the mounting bracket 1302. The servo motor 1304 and the geared motor 1305 are both electrically connected to the electrical control box 1309 through wires. The electrical control box 1309 is an electrical device that integrates power control, protection and monitoring functions. It is mainly used for automatic control, equipment protection and operation monitoring. Through the internal controller program or manual operation, it realizes basic control functions such as switching and reversing of electrical equipment, and supports automated operation.

[0034] In use, the design consists of multiple horizontally arranged square tanks 3 connected in series. Each tank can hold several modular iron-carbon packing materials 7. The addition points for iron-carbon and Fenton hydrogen peroxide in the several square tanks 3 can be flexibly set, fully coupling the redox capacity of the iron-carbon galvanic cell and the strong oxidizing capacity of Fenton. The horizontally connected square tanks 3 achieve a gradient layout between the iron-carbon micro-electrolysis zone and the Fenton reaction zone, and the iron-carbon packing materials 7 generate... As a direct Fenton catalyst, hydrogen peroxide can be added 3-5 tanks downstream of the iron-carbon reaction tank to ensure a continuous reaction system. / The molar ratio is in the ideal range of 3-5. At the same time, the iron-carbon packing 7 of a single module can be lifted by a walking electric hoist 13 to check the caking condition or replace it, which greatly improves the operational flexibility and solves the problem of iron-carbon scaling maintenance and replacement. In addition, while retaining the original biological tank structure, rapid transformation can be achieved through series tanks.

[0035] In summary, the design consists of multiple horizontally arranged square tanks 3 connected in series. Each tank can hold several modular iron-carbon packing materials 7. The addition points for iron-carbon and Fenton hydrogen peroxide can be flexibly set in the several square tanks 3, fully coupling the redox capacity of the iron-carbon galvanic cell and the strong oxidizing capacity of Fenton. At the same time, the iron-carbon packing material 7 of a single module can be lifted by a mobile electric hoist 13 to check the caking condition or replace it, greatly improving the operational flexibility and solving the problem of iron-carbon scaling maintenance and replacement. In addition, while retaining the original biological tank structure, rapid transformation can be achieved through the series tanks.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An iron-carbon catalytic Fenton reactor, comprising a horizontal tank (1), characterized in that: The horizontal tank (1) has inlet and outlet ports (2) on both sides, and square pools (3) are distributed in the horizontal tank (1). The square pools (3) are interconnected. The lower part of the square pool (3) is provided with sedimentation hopper (4), and a support beam (5) is fixed above the sedimentation hopper (4). An aeration coil (6) is installed on the support beam (5), and iron-carbon packing (7) is clamped on the support beam (5). Stacking column feet (8) are provided around the bottom of the iron-carbon packing (7), and lifting lugs (9) are provided around the top. The iron-carbon packing (7) is stacked on top of each other through the stacking column feet (8) and the lifting lugs (9). The top of the horizontal tank (1) is installed with a cover plate (10) by bolts, and a dosing port (11) is distributed on the cover plate (10). A bracket (12) is installed on the rear side of the horizontal tank (1), and a walking electric hoist (13) is installed on the inner top of the bracket (12).

2. The iron-carbon catalytic Fenton reactor according to claim 1, characterized in that: The bottom of the sedimentation hopper (4) is provided with a drain port (14), and a drain pipe (15) is connected through the drain port (14).

3. The iron-carbon catalytic Fenton reactor according to claim 1, characterized in that: The support beam (5) is a rectangular frame structure, and the support beam (5) is provided with limiting protrusions (16) around its perimeter. The iron-carbon filler (7) is snapped onto the limiting protrusions (16) by stacking column feet (8).

4. The iron-carbon catalytic Fenton reactor according to claim 1, characterized in that: The square pool (3) has at least 6 units, and the dosing port (11) corresponds to each square pool (3).

5. The iron-carbon catalytic Fenton reactor according to claim 1, characterized in that: The cover plate (10) is evenly distributed with pipe interfaces (17), and one end of the aeration coil (6) extends outward from the pipe interface (17).

6. The iron-carbon catalytic Fenton reactor according to claim 1, characterized in that: The horizontal tank (1) has a slot (18) on its rear side, and the bracket (12) is inserted into the slot (18) and fixed by screws.

7. The iron-carbon catalytic Fenton reactor according to claim 1, characterized in that: The mobile electric hoist (13) includes a hanging rail (1301) and a fixed frame (1302). The upper part of the fixed frame (1302) is equipped with a roller (1303) and a servo motor (1304), and the output shaft end of the servo motor (1304) is connected to the roller (1303). The roller (1303) is located on the upper and lower sides of the hanging rail (1301) and is slidably connected to the hanging rail (1301). The lower part of the fixed frame (1302) is equipped with a reduction motor (1305) and a hoist winch (1306), and the hoist winch (1306) is connected to the output shaft end of the reduction motor (1305). A wire rope (1307) is wound on the hoist winch (1306), and one end of the wire rope (1307) is connected to a hook (1308).

8. The iron-carbon catalytic Fenton reactor according to claim 7, characterized in that: An electrical control box (1309) is installed on the rear side of the fixed frame (1302). The servo motor (1304) and the geared motor (1305) are both electrically connected to the electrical control box (1309) through wires.

Images