Air stripping device for Fenton process

Abstract

The air stripping device comprises an air stripping tower, a water inlet pipe used for introducing waste water is installed on one side of the air stripping tower, and an air outlet pipe used for guiding out gas generated during waste water treatment is connected to the upper portion of the air stripping tower in a penetrating mode. A purification tower for purifying the introduced gas is arranged on one side of the gas outlet pipe, a driving unit is further arranged above the air stripping tower, a piston rod is mounted at the output end of the driving unit, a lifting rod is mounted at one end of the piston rod, and a connecting claw is arranged at the tail end of the lifting rod; and the end part of the connecting claw is connected with an extrusion mechanism for guiding oxygen or air into the inner side of the air stripping tower. Through the unique structure and design of the air stripping device, the Fenton oxidation efficiency is effectively improved, the purification treatment of harmful gas is realized, and an efficient and environment-friendly solution is provided for wastewater treatment.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a stripping device for the Fenton process. Background Technology

[0002] The Fenton process is an advanced oxidation process (AOP) that utilizes the catalytic reaction between iron (Fe²⁺) and hydrogen peroxide (H₂O₂) to generate hydroxyl radicals (·OH), a very strong oxidant capable of decomposing a variety of recalcitrant organic pollutants. In the Fenton oxidation process, the Fenton reagent consists of Fe²⁺ and H₂O₂. Under acidic conditions, Fe²⁺ catalyzes the decomposition of H₂O₂ to produce ·OH, thereby oxidizing organic pollutants. It is widely used to treat wastewater containing recalcitrant pollutants such as organic matter, dyes, pesticides, and pharmaceutical intermediates.

[0003] Stripping technology involves blowing gas (usually air or oxygen) into a liquid to increase the gas-liquid contact area, promoting the volatilization or reaction of dissolved substances in the liquid. It is commonly used to remove volatile organic compounds, ammonia nitrogen, etc. from water. In the Fenton process, the main purpose of the stripping device is to increase the solubility of oxygen and improve the decomposition efficiency of H2O2, thereby enhancing the generation of ·OH and improving the oxidation efficiency. However, existing stripping devices are difficult to increase the gas-liquid contact area, resulting in low wastewater oxidation efficiency. Therefore, it is necessary to provide a stripping device for the Fenton process to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to provide a stripping device for the Fenton process, in order to solve the problem mentioned in the background art of how to increase the gas-liquid contact area when oxygen or air oxidizes wastewater. This utility model provides a solution that is significantly different from the existing technology, addressing the problem that the existing technology solutions are too simplistic.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a stripping device for the Fenton process, comprising a stripping tower, an inlet pipe for introducing wastewater installed on one side of the stripping tower, and an outlet pipe for discharging gas generated during wastewater treatment connected through the top of the stripping tower, a purification tower for purifying the introduced gas installed on one side of the outlet pipe, a drive unit installed above the stripping tower, a piston rod installed at the output end of the drive unit, a lifting rod installed at one end of the piston rod, a connecting claw at the end of the lifting rod, and a compression mechanism connected to the end of the connecting claw for introducing oxygen or air into the inside of the stripping tower.

[0006] In a further embodiment, a base is sealed and installed on one side of the stripping tower in the vertical direction.

[0007] In a further embodiment, the drive unit is a pneumatic cylinder or a hydraulic cylinder.

[0008] In a further embodiment, the extrusion mechanism includes a piston block installed at the end of the connecting claw, and a connecting block is connected inside the piston block through an opening. A gasket is provided at the upper end of the connecting block and abuts against one side of the piston block.

[0009] In a further embodiment, the system also includes a central column disposed inside the stripping tower. The central column is hollow inside and has a blocking block inside. The outer side of the blocking block is sealed to the inner wall of the central column, and an air inlet pipe is connected to the end of the central column.

[0010] In a further embodiment, a spiral tube is also provided inside the stripping tower, and an air outlet is provided on the inner wall of the spiral tube near the central axis, and a one-way valve is provided inside the air outlet.

[0011] Compared with existing technologies, the beneficial effects of this utility model are:

[0012] 1. This utility model is equipped with a squeezing mechanism. Through the squeezing mechanism composed of a piston block, a connecting block and a gasket, oxygen or air is sent into the wastewater in a pulse manner to form strong turbulence. Compared with the existing technology, it increases the gas-liquid contact area, thereby improving the oxygen solubility and H2O2 decomposition efficiency, and thus enhancing the generation of ·OH and improving the Fenton oxidation efficiency.

[0013] 2. This utility model is equipped with a spiral tube and an air outlet. Through the structure of the spiral tube and the design of the one-way valve, oxygen or air is forced out under pressure to form an interlaced airflow. Compared with the existing technology, this further increases the contact with wastewater and promotes the oxidation reaction.

[0014] 3. This utility model includes a purification tower, which directs harmful gases such as ammonia and nitrogen generated during the Fenton oxidation process to the purification tower for treatment via an outlet pipe, thereby reducing environmental pollution. The device has a simple structure, mainly composed of a stripping tower, a purification tower, a drive unit, and an extrusion mechanism, making it easy to install and maintain.

[0015] In summary, this stripping device, through its unique structure and design, effectively improves the efficiency of Fenton oxidation and achieves the purification of harmful gases, providing an efficient and environmentally friendly solution for wastewater treatment. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the stripping device for the Fenton process provided in this utility model;

[0017] Figure 2 for Figure 1The schematic diagram of the main cross-section is shown below;

[0018] Figure 3 for Figure 2 A three-dimensional structural diagram of the spiral tube shown;

[0019] Figure 4 for Figure 2 The enlarged structural diagram at point A is shown below;

[0020] Figure 5 for Figure 2 The enlarged structural diagram at point B is shown.

[0021] In the diagram: 1. Stripping tower; 101. Base; 2. Water inlet pipe; 3. Air outlet pipe; 4. Purification tower; 5. Drive unit; 6. Piston rod; 7. Lifting rod; 8. Connecting claw; 9. Extrusion mechanism; 901. Piston block; 902. Connecting block; 903. Gasket; 10. Central column; 1001. Block; 11. Spiral tube; 1101. Air outlet; 12. Air inlet pipe; 13. Water outlet pipe. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Please see Figure 1-5 This utility model provides an embodiment of a stripping device for the Fenton process, comprising a stripping tower 1, an inlet pipe 2 for introducing wastewater onto one side of the stripping tower 1, and an outlet pipe 3 for discharging gas generated during wastewater treatment, which is connected through the top of the stripping tower 1. A purification tower 4 for purifying the introduced gas is provided on one side of the outlet pipe 3. A drive unit 5 is also provided above the stripping tower 1, and a piston rod 6 is installed at the output end of the drive unit 5. A lifting rod 7 is installed at one end of the piston rod 6, and a connecting claw 8 is provided at the end of the lifting rod 7. A squeezing mechanism 9 is connected to the end of the connecting claw 8 for introducing oxygen or air into the inside of the stripping tower 1.

[0024] The stripping tower 1 is sealed with a base 101 on one side in the vertical direction. The drive unit 5 is a cylinder or a hydraulic cylinder. The extrusion mechanism 9 includes a piston block 901 installed at the end of the connecting claw 8. A connecting block 902 is connected inside the piston block 901 through an opening. A gasket 903 is provided on the upper end of the connecting block 902 and abuts against one side of the piston block 901.

[0025] First, wastewater is introduced into the inside of the stripping tower 1 through the inlet pipe 2. After the stripping tower 1 is full, the valve of the inlet pipe 2 is closed, and the valve of the gas tank connected to the end of the air inlet pipe 12 is opened, so that the air and oxygen inside the gas tank can be connected to the inside of the central column 10 through the air inlet pipe 12. At this time, the drive unit 5 is started by the control button, so that the drive unit 5 drives the piston rod 6, the lifting rod 7, the connecting claw 8 and the extrusion mechanism 9 to move up and down at the same time. The extrusion mechanism 9 includes a piston block 901, a connecting block 902 and a gasket 903. When the piston block 901, the connecting block 902 and the gasket 903 move downward, the gasket 903 is thin on the outside and thick on the inside. The outer side of the gasket 903 will be subjected to the extrusion force of the oxygen or air inside the central column 10, so that the gasket 903 deforms upward around the central axis of the connecting block 902 and opens the air inlet hole in the center of the piston block 901, thereby extruding the oxygen or air below the central column 10 with the piston block 901 as the dividing line to the top.

[0026] It also includes a central column 10 disposed inside the stripping tower 1. The central column 10 is hollow inside and has a block 1001 disposed inside. The outer side of the block 1001 is sealed to the inner wall of the central column 10. An air inlet pipe 12 is connected to the end of the central column 10. It also includes a spiral tube 11 disposed inside the stripping tower 1. An air outlet 1101 is opened on the inner wall of the spiral tube 11 near the central axis. A one-way valve is disposed inside the air outlet 1101.

[0027] When the extrusion mechanism 9 moves upward, it can squeeze the oxygen or air above into the inner side of the spiral tube 11. Since the air outlet 1101 on the inner side of the spiral tube 11 is equipped with a one-way valve, the oxygen or air in the spiral tube 11 can only be squeezed out under a certain air pressure. During the reciprocating up and down movement of the extrusion mechanism 9, the air pressure inside the spiral tube 11 will increase. When the air pressure inside the spiral tube 11 increases to the maximum bearing state, it can be released in conjunction with the one-way valve in the air outlet 1101 and can resist the resistance of the wastewater. It can be interspersed inside the wastewater, so that the oxygen or air can be oxidized more evenly with the wastewater. The harmful gases ammonia and nitrogen generated after oxidation will be discharged from the air outlet 3 into the inner side of the purification tower 4, and will be deeply purified by the purification tower 4 before being discharged.

[0028] Working principle: When using it, such as Figure 1-5 As shown, wastewater is first introduced into the inside of the stripping tower 1 through the inlet pipe 2. After the stripping tower 1 is full, the valve of the inlet pipe 2 is closed.

[0029] Next, the valve of the gas tank connected to the end of the air inlet pipe 12 is opened, so that the air and oxygen inside the gas tank can be connected to the inside of the central column 10 through the air inlet pipe 12. At this time, the drive unit 5 is started by the control button, so that the drive unit 5 drives the piston rod 6, the lifting rod 7, the connecting claw 8 and the extrusion mechanism 9 to move up and down at the same time. The extrusion mechanism 9 includes a piston block 901, a connecting block 902 and a gasket 903. When the piston block 901, the connecting block 902 and the gasket 903 move downward, the gasket 903 is thin on the outside and thick on the inside. The outer side of the gasket 903 will be subjected to the extrusion force of the oxygen or air inside the central column 10. This causes the gasket 903 to deform upward around the central axis of the connecting block 902 and open the air inlet hole in the center of the piston block 901, thereby extruding the oxygen or air below the central column 10 with the piston block 901 as the dividing line to the top.

[0030] When the extrusion mechanism 9 moves upward, it can squeeze the oxygen or air above into the inner side of the spiral tube 11. Since the air outlet 1101 on the inner side of the spiral tube 11 is equipped with a one-way valve, the oxygen or air in the spiral tube 11 can only be squeezed out under a certain air pressure. During the reciprocating up and down movement of the extrusion mechanism 9, the air pressure inside the spiral tube 11 will increase. When the air pressure inside the spiral tube 11 increases to the maximum bearing state, it can be released in conjunction with the one-way valve in the air outlet 1101 and can resist the resistance of the wastewater. It can be interspersed inside the wastewater, so that the oxygen or air can be oxidized more evenly with the wastewater. The harmful gases (ammonia, nitrogen) generated after oxidation will be discharged from the air outlet 3 into the inner side of the purification tower 4, and will be deeply purified by the purification tower 4 before being discharged.

[0031] Finally, after the wastewater inside the stripping tower 1 has been stripped and oxidized, the treated wastewater inside the stripping tower 1 can be discharged through the outlet pipe 13. Then, the above operation is repeated to oxidize the untreated wastewater again.

[0032] Contents not described in detail in this specification are prior art known to those skilled in the art. In this description, unless otherwise stated, "multiple" means two or more. Terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate orientations or positional relationships based on the accompanying drawings, and are used solely for ease of description and simplification, not to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In this description, it should be noted that unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A stripping device for Fenton process, comprising a stripping tower (1), one side of which is provided with a water inlet pipe (2) for introducing wastewater, and an exhaust pipe (3) is connected through above the stripping tower (1) for discharging the gas generated when treating wastewater, one side of the exhaust pipe (3) is provided with a purification tower (4) for purifying the introduced gas, and a driving unit (5) is further provided above the stripping tower (1), and a piston rod (6) is installed at the output end of the driving unit (5), one end of the piston rod (6) is installed with a lifting rod (7), and a connecting claw (8) is arranged at the end of the lifting rod (7), characterized in that: The end of the connecting claw (8) is connected with an extrusion mechanism (9) for guiding oxygen or air into the inside of the blow-off tower (1).

2. A stripping device for Fenton process according to claim 1, characterized in that: A base (101) is sealingly installed on one side of the blow-off tower (1) in the vertical direction, and a water outlet pipe (13) is further connected below the blow-off tower (1).

3. A stripping device for Fenton process according to claim 1, characterized in that: The driving unit (5) is a pneumatic cylinder or a hydraulic cylinder.

4. A stripping device for Fenton process according to claim 1, characterized in that: The extrusion mechanism (9) comprises a piston block (901) installed at the end of the connecting claw (8), and a connecting block (902) is connected in the piston block (901) through an opening, a gasket (903) is arranged on the upper end of the connecting block (902), and the connecting block (902) abuts against one side of the piston block (901).

5. A stripping device for Fenton process according to claim 1, characterized in that: A center column (10) is further arranged in the blow-off tower (1), the center column (10) is hollow, a plug block (1001) is arranged in the center column (10), the plug block (1001) is sealingly arranged on the inner wall of the center column (10), and an air inlet pipe (12) is communicated with the end of the center column (10).

6. A stripping device for Fenton process according to claim 1, characterized in that: A spiral pipe (11) is further arranged in the blow-off tower (1), air outlet holes (1101) are formed in the inner wall of the spiral pipe (11) close to the center axis, and one-way valves are arranged in the air outlet holes (1101).

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