Fenton oxidation wastewater treatment unit

Abstract

The utility model discloses a Fenton oxidation wastewater treatment device, comprising a reaction tower, a stirring and scraping device, a dispersing device and an exhaust device, wherein the stirring and scraping device comprises a fixing frame 1, a motor 1, a bevel gear 1, a connecting shaft 1, a bevel gear 2, a stirring paddle and a scraping paddle, the dispersing device comprises a fixing frame 2, a motor 2, a bevel gear 3, a connecting shaft sleeve, a bevel gear 4 and a dispersing paddle, the exhaust device comprises an exhaust pump, an exhaust pipe, an exhaust pipe and an air inlet, the exhaust pump is fixed on the reaction tower, a feed inlet, a feed outlet and a mud outlet are provided on the reaction tower, and a packing layer is provided inside the reaction tower. The utility model belongs to the technical field of wastewater treatment, and specifically refers to a Fenton oxidation wastewater treatment device. The utility model effectively solves the problem that sludge is easily accumulated on the inner wall of the Fenton tower and is difficult to clean, and the problem that the reaction generated gas is difficult to discharge. It is a new modern Fenton oxidation wastewater treatment device.

Description

Technical Field

[0001] The utility model belongs to the technical field of wastewater treatment, in particular to a Fenton oxidation wastewater treatment device. Background Art

[0002] The Fenton process has unique advantages in treating difficult-to-degrade organic pollutants and is a wastewater treatment technology with great application prospects. Its essence is that H2O2 generates hydroxyl radicals (·OH) with high reactivity under the catalytic action of Fe2+. ·OH can be oxidized to inorganic states with many known organic compounds such as carboxylic acids, alcohols, and esters. The reaction has a high ability to remove difficult-to-degrade organic pollutants. It is widely used in the treatment of printing and dyeing wastewater, oily wastewater, phenol-containing wastewater, coking wastewater, nitrobenzene-containing wastewater, diphenylamine wastewater and other wastewaters. It has good treatment effect, non-toxic and harmless reaction products, good operating characteristics, fast reaction speed at room temperature, high oxidation efficiency and low operating costs, but it also produces a large amount of iron sludge, which is not easy to clean.

[0003] In the prior art, a Chinese patent with publication number CN209456137U discloses a Fenton oxidation tower with enhanced internal circulation. The oxidation reaction is enhanced by adopting two methods: gas circulation and water circulation. The exhaust gas distribution pipe is located below the wastewater distribution pipe. The rising gas can form an upward flow rate, which can push light particles and wastewater to rise to form turbulence, effectively accelerating the internal mass transfer and increasing the reaction rate. After the gas pressure in the cylinder increases to a certain value, the opening direction of the three-way valve is changed to form an exhaust gas circulation, which can effectively reduce the ineffective oxidation of hydrogen peroxide and ferrous sulfate, save oxidation costs, and improve oxidation efficiency.

[0004] However, the sludge left on the inner wall of the Fenton tower is difficult to clean, and the sludge is easily accumulated on the exhaust gas distribution pipe when using gas circulation to block the gas outlet. Utility Model Content

[0005] The problem that the utility model aims to solve is: the problem that sludge easily accumulates on the inner wall of the Fenton tower and is difficult to clean, and the problem that the gas generated by the reaction is difficult to discharge.

[0006] In order to solve the above technical problems, the utility model proposes a Fenton oxidation wastewater treatment device, including a reaction tower, a stirring and scraping device, a dispersion device and an exhaust device, wherein the stirring and scraping device is fixed on the reaction tower, the dispersion device is arranged on the stirring and scraping device, and the exhaust device is fixed on the reaction tower.

[0007] Furthermore, the stirring and scraping device includes a fixed frame, a motor, a bevel gear, a connecting shaft, a bevel gear, a stirring paddle and a scraping paddle. The fixed frame is fixed on the upper side of the reaction tower, the motor is fixed inside the fixed frame and the output shaft passes through the fixed frame, the bevel gear is fixed on the output shaft of the motor, one end of the connecting shaft is rotatably arranged on the fixed frame and the other end extends into the reaction tower, the bevel gear is fixed on the connecting shaft, the stirring paddle is fixed on the connecting shaft, the scraping paddle is fixed on the connecting shaft, the bevel gear and the bevel gear are meshed with each other, and the scraping paddle is arranged close to the inner wall of the reaction tower.

[0008] Furthermore, the dispersion device includes a second fixing frame, a second motor, a third bevel gear, a connecting sleeve, a fourth bevel gear and a dispersion paddle. The second fixing frame is fixed on the reaction tower. The second motor is fixed inside the second fixing frame and the output shaft passes through the second fixing frame. The third bevel gear is fixed on the output shaft of the second motor. The connecting sleeve is rotatably arranged on the top of the reaction tower and passes through the reaction tower. The fourth bevel gear is fixed on the top of the connecting sleeve. The dispersion paddle is fixed on the connecting sleeve. The third bevel gear and the fourth bevel gear are meshed with each other. The connecting sleeve is sleeved on the outside of the connecting shaft.

[0009] Furthermore, the exhaust device includes an exhaust pump, an exhaust pipe, an exhaust pipe and an air inlet. The exhaust pump is fixed on the reaction tower, one end of the exhaust pipe is connected to the exhaust pump and the other end is deeply arranged in the reaction tower, the exhaust pipe is connected to the exhaust pump, and the air inlet is fixed on the reaction tower.

[0010] Furthermore, the reaction tower is provided with a feeding port, a feed port, a discharge port and a mud discharge port.

[0011] Furthermore, a packing layer is provided inside the reaction tower.

[0012] The beneficial effects achieved by the utility model using the above structure are as follows:

[0013] The problem that sludge easily accumulates on the inner wall of the Fenton tower and is difficult to clean is solved by the stirring and scraping device, and the problem that the reaction generated gas is difficult to discharge is solved by the exhaust device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The overall structure of the embodiment of the utility model is shown in FIG. Figure 1 ;

[0015] Figure 2 A cross-sectional view of an embodiment of the present utility model Figure 1 ;

[0016] Figure 3 A cross-sectional view of an embodiment of the present utility model Figure 2 .

[0017] Among them, 1. reaction tower, 2. stirring and scraping device, 3. dispersion device, 4. exhaust device, 5. fixed frame 1, 6. motor 1, 7. bevel gear 1, 8. connecting shaft 1, 9. bevel gear 2, 10. stirring paddle, 11. scraping paddle, 12. fixed frame 2, 13. motor 2, 14. bevel gear 3, 15. connecting shaft sleeve, 16. bevel gear 4, 17. dispersion paddle, 18. vacuum pump, 19. vacuum pipe, 20. exhaust pipe, 21. air inlet, 22. feeding port, 23. feeding port, 24. discharging port, 25. mud outlet, 26. packing layer.

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] like Figure 1-3 As shown, the Fenton oxidation wastewater treatment device proposed in the utility model includes a reaction tower 1, a stirring and scraping device 2, a dispersion device 3 and an exhaust device 4, the stirring and scraping device 2 is fixed on the reaction tower 1, the dispersion device 3 is arranged on the stirring and scraping device 2, and the exhaust device 4 is fixed on the reaction tower 1.

[0021] In order to facilitate the cleaning of the precipitated iron mud, the stirring and scraping device 2 includes a fixed frame 5, a motor 6, a bevel gear 7, a connecting shaft 8, a bevel gear 29, a stirring paddle 10 and a scraping paddle 11. The fixed frame 5 is fixed on the upper side of the reaction tower 1, the motor 6 is fixed inside the fixed frame 5 and the output shaft penetrates the fixed frame 5, the bevel gear 7 is fixed on the output shaft of the motor 6, one end of the connecting shaft 8 is rotatably arranged on the fixed frame 5 and the other end is deeply inserted into the reaction tower 1, the bevel gear 29 is fixed on the connecting shaft 8, the stirring paddle 10 is fixed on the connecting shaft 8, the scraping paddle 11 is fixed on the connecting shaft 8, the bevel gear 7 and the bevel gear 29 are meshed with each other, and the scraping paddle 11 is set close to the inner wall of the reaction tower 1.

[0022] In order to make the added drugs and substances in the sewage react fully, the dispersing device 3 includes a fixed frame 2 12, a motor 2 13, a bevel gear 3 14, a connecting sleeve 15, a bevel gear 4 16 and a dispersing paddle 17. The fixed frame 2 12 is fixed on the reaction tower 1, the motor 2 13 is fixed inside the fixed frame 2 12 and the output shaft passes through the fixed frame 2 12, the bevel gear 3 14 is fixed on the output shaft of the motor 2 13, the connecting sleeve 15 is rotatably arranged on the top of the reaction tower 1 and passes through the reaction tower 1, the bevel gear 4 16 is fixed on the top of the connecting sleeve 15, the dispersing paddle 17 is fixed on the connecting sleeve 15, the bevel gear 3 14 and the bevel gear 4 16 are meshed with each other, and the connecting sleeve 15 is sleeved on the outside of the connecting shaft 1 8.

[0023] In order to quickly discharge the gas generated by the reaction and allow air to circulate, the exhaust device 4 includes an exhaust pump 18, an exhaust pipe 19, an exhaust pipe 20 and an air inlet 21. The exhaust pump 18 is fixed on the reaction tower 1, one end of the exhaust pipe 19 is connected to the exhaust pump 18 and the other end is deeply arranged in the reaction tower 1, the outlet pipe is connected to the exhaust pump 18, and the air inlet 21 is fixed on the reaction tower 1.

[0024] In order to facilitate the feeding and discharging of materials, the reaction tower 1 is provided with a feeding port 22 , a feed port 23 , a discharge port 24 and a mud discharge port 25 .

[0025] In order to provide a larger contact area for the reactants, a packing layer 26 is provided inside the reaction tower 1 .

[0026] During specific use, sewage is added through the water inlet, and the motor 2 13 is operated. The bevel gear 2 9 is driven by the bevel gear 1 7 to drive the stirring shaft 1 to rotate, and stirring is started. At the same time, the vacuum pump 18 is operated to extract the generated carbon dioxide and the oxygen decomposed by hydrogen peroxide. The air enters the other end while the vacuum is exhausted. The pH regulator is added through the feed port 22 to adjust the sewage to a suitable pH. Then, hydrogen peroxide and ferric sulfate are added to generate hydroxyl radicals. The hydroxyl radicals react with the difficult-to-treat pollutants in the sewage to generate carbon dioxide and water. The easily decomposable substances react with the microorganisms in the packing layer 26 of the reaction tower 1 to generate carbon dioxide and water. Finally, a flocculant is added to generate colloids from iron ions. The motor is stopped to allow the colloid and sludge in the sewage to precipitate. Then, after the qualified sewage is discharged, the motor 1 6 is operated, and the scraper paddle 11 is used to scrape off the sludge adhering to the inner wall so that it is discharged from the sludge discharge port. The above is the use process of the entire Fenton oxidation wastewater treatment device.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0029] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. Fenton oxidation wastewater treatment device, characterized in that: The invention comprises a reaction tower (1), a stirring and scraping device (2), a dispersing device (3) and an exhaust device (4), wherein the stirring and scraping device (2) is fixed on the reaction tower (1), the dispersing device (3) is arranged on the stirring and scraping device (2), and the exhaust device (4) is fixed on the reaction tower (1).

2. The Fenton oxidation wastewater treatment device according to claim 1, characterized in that: The stirring and scraping device (2) comprises a fixing frame (5), a motor (6), a bevel gear (7), a connecting shaft (8), a bevel gear (9), a stirring paddle (10) and a scraping paddle (11). The fixing frame (5) is fixed on the upper side of the reaction tower (1). The motor (6) is fixed inside the fixing frame (5) and the output shaft passes through the fixing frame (5). The bevel gear (7) is fixed on the output shaft of the motor (6). One end of the connecting shaft (8) is rotatably arranged on the fixing frame (5) and the other end is extended into the reaction tower (1). The bevel gear (9) is fixed on the connecting shaft (8). The stirring paddle (10) is fixed on the connecting shaft (8). The scraping paddle (11) is fixed on the connecting shaft (8). The bevel gear (7) and the bevel gear (9) are meshed with each other. The scraping paddle (11) is arranged close to the inner wall of the reaction tower (1).

3. The Fenton oxidation wastewater treatment device according to claim 2, characterized in that: The dispersion device (3) comprises a second fixing frame (12), a second motor (13), a third bevel gear (14), a connecting shaft sleeve (15), a fourth bevel gear (16) and a dispersion paddle (17). The second fixing frame (12) is fixed on the reaction tower (1). The second motor (13) is fixed inside the second fixing frame (12) and the output shaft passes through the second fixing frame (12). The third bevel gear (14) is fixed on the output shaft of the second motor (13). The connecting shaft sleeve (15) is rotatably arranged on the top of the reaction tower (1) and passes through the reaction tower (1). The fourth bevel gear (16) is fixed on the top of the connecting shaft sleeve (15). The dispersion paddle (17) is fixed on the connecting shaft sleeve (15). The third bevel gear (14) and the fourth bevel gear (16) are meshed with each other. The connecting shaft sleeve (15) is sleeved on the outside of the connecting shaft (8).

4. The Fenton oxidation wastewater treatment device according to claim 3, characterized in that: The exhaust device (4) comprises an exhaust pump (18), an exhaust pipe (19), an exhaust pipe (20) and an air inlet (21); the exhaust pump (18) is fixed on the reaction tower (1); one end of the exhaust pipe (19) is connected to the exhaust pump (18) and the other end is disposed deep inside the reaction tower (1); the exhaust pipe is connected to the exhaust pump (18); and the air inlet (21) is fixed on the reaction tower (1).

5. The Fenton oxidation wastewater treatment device according to claim 4, characterized in that: The reaction tower (1) is provided with a feeding port (22), a feed port (23), a discharge port (24) and a mud discharge port (25).

6. The Fenton oxidation wastewater treatment device according to claim 5, characterized in that: A packing layer (26) is provided inside the reaction tower (1).

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