Novel integrated circulating Fenton fluidized bed

Abstract

The utility model relates to the technical field of wastewater treatment equipment, and discloses a novel integrated circulating Fenton fluidized bed which comprises a bottom plate, a reaction tank is fixedly connected to the middle of the upper surface of the bottom plate, and a protective shell is fixedly connected to the edge of one side, close to the center, of the upper surface of the reaction tank. According to the integrated circulating Fenton fluidized bed disclosed by the utility model, when the integrated circulating Fenton fluidized bed is used, sewage is conveniently conveyed into the reaction tank through the sewage inlet pipe by opening the first electromagnetic control valve, and hydrogen peroxide and ferrous sulfate are conveniently conveyed into the reaction tank together through the hydrogen peroxide inlet pipe and the ferrous sulfate inlet pipe; at the moment, a servo motor is started to drive a rotating rod to rotate and drive stirring blades, a filtering sieve plate and a push plate to rotate at the same time, hydrogen peroxide, ferrous sulfate and sewage can be fully mixed and reacted through the stirring blades and the filtering sieve plate, and it is ensured that hydrogen peroxide and ferrous sulfate make full contact with pollutants in the sewage.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment equipment, in particular to a novel integrated circulating Fenton fluidized bed. Background Art

[0002] The Fenton chemical oxidation process is a well-known advanced oxidation treatment technology that utilizes the reaction of hydrogen peroxide (H2O2) with ferrous ions (Fe2+) to produce hydroxyl radicals, which oxidize organic pollutants. The Fenton fluidized bed utilizes a fluidized bed model to allow the majority of the ferric iron produced by the Fenton process to crystallize or precipitate onto the surface of the fluidized bed support. This new technology combines homogeneous chemical oxidation (the Fenton process), heterogeneous chemical oxidation (H2O2 / FeOOH), fluidized bed crystallization, and FeOOH reduction and dissolution. This technology significantly improves the traditional Fenton oxidation process, reducing the large amount of chemical sludge generated by the traditional Fenton process. Furthermore, the iron oxides formed on the support surface have a heterogeneous catalytic effect, and the fluidized bed model promotes chemical oxidation reactions and mass transfer efficiency, thereby improving COD removal rates. The effluent after reaction, after pH adjustment, produces iron-containing sludge. Another advantage of this system is the ability to adjust COD removal by adjusting the hydrogen peroxide dosage. This will effectively control the COD discharge concentration of wastewater.

[0003] However, traditional integrated circulating Fenton fluidized beds may often experience liquid retention within the bed, that is, the liquid residence time in certain areas is too long, resulting in a higher concentration of the reaction materials in these areas and a lower concentration in other areas. In this case, the mixing effect within the bed will be affected, and the reaction efficiency in some areas may be reduced. Therefore, technical improvements are urgently needed. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a novel integrated circulating Fenton fluidized bed. When the integrated circulating Fenton fluidized bed is used, the sewage is transported into the reaction tank through the sewage inlet pipe by opening the first electromagnetic control valve, and the hydrogen peroxide and ferrous sulfate are transported into the reaction tank together through the hydrogen peroxide inlet pipe and the ferrous sulfate inlet pipe. At this time, the servo motor is started to drive the rotating rod to rotate and the stirring blade, the filter screen plate and the push plate are driven to rotate. The stirring blade and the filter screen plate facilitate the hydrogen peroxide, ferrous sulfate and sewage to be fully mixed and reacted, ensuring that the hydrogen peroxide and ferrous sulfate are fully in contact with the pollutants in the sewage, reducing the local concentration gradient and preventing the accumulation of harmful substances in the sewage, reducing the volatility and instability in the reaction process, and ensuring the long-term stable operation of the reaction system. The filter screen plate uses activated carbon material to effectively adsorb impurities such as organic matter and heavy metal ions in the sewage, thereby further purifying the sewage.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A novel integrated circulating Fenton fluidized bed comprises a base plate, a reaction tank being fixedly connected to the middle portion of the upper surface of the base plate, a protective shell being fixedly connected to an edge of the upper surface of the reaction tank near the center, a servo motor being fixedly connected to the middle portion of the top surface of the protective shell, a rotating rod being fixedly connected to the output end of the servo motor, the rotating rod passing through the reaction tank into the interior of the reaction tank and being rotatably connected to the bottom surface of the reaction tank, a filter screen being fixedly connected to the middle portion of the rotating rod body, the filter screen being made of activated carbon material; and a plurality of stirring blades being fixedly connected to the upper and lower ends of the rotating rod body.

[0007] A connecting plate is fixedly connected to the middle of the outer wall of the reaction tank, a storage bucket is fixedly connected to one side of the upper surface of the connecting plate, a water pump is fixedly connected to the middle of the rear end of the upper surface of the connecting plate, a fixing plate is fixedly connected to the middle of the outer wall of the front end of the connecting plate, a circulating pump is fixedly connected to the middle of the upper surface of the fixing plate, a water suction end of the circulating pump is through-connected to the lower end of the outer wall of one side of the storage bucket, and a water outlet end of the circulating pump is through-connected to the upper part of the outer wall of one side of the reaction tank.

[0008] Through the above technical solution, compared with the existing integrated circulating Fenton fluidized bed, when the integrated circulating Fenton fluidized bed is used, when the reaction is completed, the circulation pump is started to facilitate the liquid in the reaction tank to be transported to the storage barrel through the water outlet end from the water suction end. By starting the water pump, the liquid in the storage barrel is extracted from the water suction end and transported to the reaction tank through the water outlet end, and a secondary reaction is carried out to purify impurities in the liquid, and the practical performance is high.

[0009] Furthermore, a plurality of push plates are fixedly connected to the lower end of the rotating rod body, and the lower ends of the push plates are tightly fitted with the bottom surface of the reaction tank;

[0010] Through the above technical solution, the precipitated impurities can be easily pushed into the sewage outlet pipe through the push plate.

[0011] Furthermore, the edges of the upper surface of the reaction tank are respectively connected with a hydrogen peroxide inlet pipe, a ferrous sulfate inlet pipe and a sewage inlet pipe, and the outer walls of the hydrogen peroxide inlet pipe, the ferrous sulfate inlet pipe and the sewage inlet pipe are all sleeved with a first electromagnetic control valve;

[0012] With the above technical solution, the hydrogen peroxide inlet pipe, the ferrous sulfate inlet pipe and the sewage inlet pipe are easily opened through the first electromagnetic control valve.

[0013] Furthermore, a liquid outlet pipe is connected to the lower end of the outer wall of one side of the storage barrel, and the liquid outlet pipe passes through the storage barrel to the outside of the storage barrel and is sheathed with a second electromagnetic control valve;

[0014] With the above technical solution, the second electromagnetic control valve is used to open the liquid outlet pipe to transport the purified liquid out.

[0015] Furthermore, the front end of the bottom surface of the reaction tank is connected to a sewage discharge pipe, which passes through the reaction tank to the outside of the bottom plate and is sheathed with a third electromagnetic control valve;

[0016] With the above technical solution, the third electromagnetic control valve is used to facilitate opening the sewage outlet pipe to discharge impurities or liquid.

[0017] Furthermore, the water suction end of the water pump passes through the connecting plate and is connected to the lower end of the outer wall of the reaction tank, and the water discharge end of the water pump is connected to the upper end of the storage bucket;

[0018] Through the above technical solution, the liquid in the reaction tank can be easily transported to the storage barrel through the water pump.

[0019] Furthermore, a plc control panel is provided on the upper portion of the outer wall of the front end of the reaction tank;

[0020] Through the above technical solution, the servo motor, the first electromagnetic control valve, the second electromagnetic control valve and the third electromagnetic control valve are electrically connected through the PLC control panel, which facilitates the control of their switches.

[0021] Furthermore, a plurality of supporting legs are fixedly connected to the edge of the lower surface of the bottom plate and the edge of one side of the lower surface of the connecting plate;

[0022] Through the above technical solution, the overall stability is improved by the support legs.

[0023] The utility model has the following beneficial effects:

[0024] 1. The utility model proposes a novel integrated circulating Fenton fluidized bed. Compared with the existing integrated circulating Fenton fluidized bed, when the integrated circulating Fenton fluidized bed is used, the sewage is transported into the reaction tank through the sewage inlet pipe by opening the first electromagnetic control valve, and the hydrogen peroxide and ferrous sulfate are transported into the reaction tank together through the hydrogen peroxide inlet pipe and the ferrous sulfate inlet pipe. At this time, the servo motor is started to drive the rotating rod to rotate and the stirring blade, the filter screen plate and the push plate are also driven to rotate. The stirring blade and the filter screen plate facilitate the hydrogen peroxide, ferrous sulfate and sewage to be fully mixed and reacted, ensuring that the hydrogen peroxide and ferrous sulfate are fully in contact with the pollutants in the sewage, reducing local concentration gradients and preventing the accumulation of harmful substances in the sewage, thereby reducing volatility and instability in the reaction process and ensuring long-term stable operation of the reaction system. The filter screen plate uses activated carbon material to effectively adsorb impurities such as organic matter and heavy metal ions in the sewage, further purifying the sewage.

[0025] 2. The utility model proposes a new integrated circulating Fenton fluidized bed. Compared with the existing integrated circulating Fenton fluidized bed, when the integrated circulating Fenton fluidized bed is used, when the reaction is completed, the circulation pump is started to facilitate the water suction end to transport the liquid in the reaction tank to the storage barrel through the water outlet end. By starting the water pump, the liquid in the storage barrel is extracted from the water suction end and transported to the reaction tank through the water outlet end, and a secondary reaction is carried out to purify impurities in the liquid, and the practical performance is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is an axonometric diagram of a novel integrated circulating Fenton fluidized bed proposed in the present invention;

[0027] Figure 2 This is an axial cross-sectional diagram of a reaction tank in a novel integrated circulating Fenton fluidized bed proposed in the present invention;

[0028] Figure 3 This is an axonometric diagram of a novel integrated circulating Fenton fluidized bed proposed in the present invention;

[0029] Figure 4 This is an axonometric diagram of a circulating pump in a novel integrated circulating Fenton fluidized bed proposed in the present invention;

[0030] Figure 5 for Figure 2 Enlarged view of point A in the middle.

[0031] Legend:

[0032] 1. Bottom plate; 2. Reactor; 3. Protective shell; 4. Servo motor; 5. Rotating rod; 6. Filter screen plate; 7. Stirring blade; 8. Push plate; 9. Connecting plate; 10. Storage barrel; 11. Fixed plate; 12. Hydrogen peroxide inlet pipe; 13. Ferrous sulfate inlet pipe; 14. Sewage inlet pipe; 15. First solenoid control valve; 16. Circulation pump; 17. Water pump; 18. Discharge pipe; 19. Second solenoid control valve; 20. Sewage discharge pipe; 21. Third solenoid control valve; 22. PLC control panel; 23. Support legs. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Reference Figure 1-5 , an embodiment provided by the utility model:

[0035] A novel integrated circulating Fenton fluidized bed comprises a bottom plate 1, a reaction tank 2 is fixedly connected to the middle of the upper surface of the bottom plate 1, a protective shell 3 is fixedly connected to the edge of one side of the upper surface of the reaction tank 2 near the center, a servo motor 4 is fixedly connected to the middle of the top surface of the protective shell 3, a rotating rod 5 is fixedly connected to the output end of the servo motor 4, the rotating rod 5 passes through the reaction tank 2 to the interior of the reaction tank 2 and is rotatably connected to the bottom surface of the reaction tank 2, a filter screen plate 6 is fixedly connected to the middle of the shaft of the rotating rod 5, and the filter screen plate 6 is made of activated carbon material. A plurality of stirring blades 7 are fixedly connected to the upper and lower ends of the shaft of the rotating rod 5.

[0036] A connecting plate 9 is fixedly connected to the middle of the outer wall of the reaction tank 2, a storage bucket 10 is fixedly connected to one side of the upper surface of the connecting plate 9, a water pump 17 is fixedly connected to the middle of the rear end of the upper surface of the connecting plate 9, a fixing plate 11 is fixedly connected to the middle of the outer wall of the front end of the connecting plate 9, a circulating pump 16 is fixedly connected to the middle of the upper surface of the fixing plate 11, a water suction end of the circulating pump 16 is connected to the lower end of the outer wall of one side of the storage bucket 10, and a water outlet end of the circulating pump 16 is connected to the upper part of the outer wall of one side of the reaction tank 2;

[0037] Compared with the existing integrated circulating Fenton fluidized bed, when the integrated circulating Fenton fluidized bed is used, when the reaction is completed, the circulation pump 16 is started to facilitate the liquid in the reaction tank 2 to be transported to the storage barrel 10 through the water outlet end from the water suction end, and the water pump 17 is started to facilitate the extraction of the liquid in the storage barrel 10 from the water suction end and transport it to the reaction tank 2 through the water outlet end, so as to carry out a secondary reaction to purify the impurities in the liquid, and the practical performance is relatively high.

[0038] The lower end of the shaft of the rotating rod 5 is fixedly connected to a plurality of push plates 8, and the lower end of the push plates 8 is tightly fitted with the bottom surface of the reaction tank 2, so that the precipitated impurities can be pushed into the sewage outlet pipe 20 through the push plates 8. The edges of the upper surface of the reaction tank 2 are respectively connected with a hydrogen peroxide inlet pipe 12, a ferrous sulfate inlet pipe 13 and a sewage inlet pipe 14. The outer walls of the hydrogen peroxide inlet pipe 12, the ferrous sulfate inlet pipe 13 and the sewage inlet pipe 14 are all sleeved with a first electromagnetic control valve 15, which is convenient for opening the hydrogen peroxide inlet pipe 12, the ferrous sulfate inlet pipe 13 and the sewage inlet pipe 14 through the first electromagnetic control valve 15. The lower end of the outer wall of one side of the storage barrel 10 is connected with a liquid outlet pipe 18, which passes through the storage barrel 10 to the outside of the storage barrel 10 and is sleeved with a second electromagnetic control valve 19. The second electromagnetic control valve 19 is convenient for opening the liquid outlet pipe 18 to transport the purified liquid out. The front end of the bottom surface of the reaction tank 2 A sewage outlet pipe 20 is connected through it, which passes through the reaction tank 2 to the outside of the base plate 1 and is sleeved with a third electromagnetic control valve 21. The third electromagnetic control valve 21 is used to facilitate opening the sewage outlet pipe 20 to discharge impurities or liquids. The water suction end of the water pump 17 passes through the connecting plate 9 and is connected to the lower end of the outer wall of the reaction tank 2. The water outlet end of the water pump 17 is connected to the upper end of the storage barrel 10. The water in the reaction tank 2 is easily transported to the storage barrel 10 through the water pump 17. A plc control panel 22 is provided on the upper part of the front end outer wall of the reaction tank 2; the plc control panel 22 is electrically connected to the servo motor 4, the first electromagnetic control valve 15, the second electromagnetic control valve 19 and the third electromagnetic control valve 21 to facilitate controlling their switches. A plurality of support legs 23 are fixedly connected to the edge of the lower surface of the base plate 1 and the edge of one side of the lower surface of the connecting plate 9. The support legs 23 are used to improve the overall stability.

[0039] Working principle: When in use, the first electromagnetic control valve 15 is opened to facilitate the transportation of sewage into the reaction tank 2 through the sewage inlet pipe 14, and the hydrogen peroxide and ferrous sulfate are transported together into the reaction tank 2 through the hydrogen peroxide inlet pipe 12 and the ferrous sulfate inlet pipe 13. At this time, the servo motor 4 is started to drive the rotating rod 5 to rotate while driving the stirring blade 7, the filter screen plate 6 and the push plate 8 to rotate. The stirring blade 7 and the filter screen plate 6 facilitate the hydrogen peroxide, ferrous sulfate and sewage to be fully mixed and reacted, ensuring that the hydrogen peroxide and ferrous sulfate are fully in contact with the pollutants in the sewage, reducing the local concentration gradient and preventing the accumulation of harmful substances in the sewage, which can reduce the volatility and instability of the reaction process. To ensure the long-term stable operation of the reaction system, the activated carbon material is used through the filter plate 6, which can effectively adsorb impurities such as organic matter, heavy metal ions, etc. in the sewage, and further purify the sewage. When the reaction is completed, the circulation pump 16 is started to facilitate the water suction end to transport the liquid in the reaction tank 2 to the storage barrel 10 through the water outlet end. By starting the water pump 17, the liquid in the storage barrel 10 is extracted from the water suction end and transported to the reaction tank 2 along the water outlet end, and a secondary reaction is carried out to purify the impurities in the liquid. The push plate 8 is rotated to push the precipitated impurities into the sewage pipe 20, and the impurities are discharged by opening the third electromagnetic control valve 21. When the purification is completed, the purified liquid is discharged through the liquid outlet pipe 18 in the storage barrel 10.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A novel integrated circulating Fenton fluidized bed, comprising a bottom plate (1), characterized in that: A reaction tank (2) is fixedly connected to the middle of the upper surface of the bottom plate (1), a protective shell (3) is fixedly connected to the edge of one side of the upper surface of the reaction tank (2) near the center, a servo motor (4) is fixedly connected to the middle of the top surface of the protective shell (3), an output end of the servo motor (4) is fixedly connected to a rotating rod (5), the rotating rod (5) passes through the reaction tank (2) to the inside of the reaction tank (2) and is rotatably connected to the bottom surface of the reaction tank (2), a filter screen plate (6) is fixedly connected to the middle of the shaft of the rotating rod (5), and the filter screen plate (6) is made of activated carbon material; a plurality of stirring blades (7) are fixedly connected to the upper and lower ends of the shaft of the rotating rod (5); A connecting plate (9) is fixedly connected to the middle of the outer wall of the reaction tank (2), a storage bucket (10) is fixedly connected to one side of the upper surface of the connecting plate (9), a water pump (17) is fixedly connected to the middle of the rear end of the upper surface of the connecting plate (9), a fixing plate (11) is fixedly connected to the middle of the outer wall of the front end of the connecting plate (9), a circulating pump (16) is fixedly connected to the middle of the upper surface of the fixing plate (11), a water suction end of the circulating pump (16) is connected to the lower end of the outer wall of one side of the storage bucket (10), and a water discharge end of the circulating pump (16) is connected to the upper part of the outer wall of one side of the reaction tank (2).

2. The novel integrated circulating Fenton fluidized bed according to claim 1, characterized in that: The lower end of the rotating rod (5) is fixedly connected to a plurality of push plates (8), and the lower ends of the push plates (8) are tightly fitted to the bottom surface of the reaction tank (2).

3. The novel integrated circulating Fenton fluidized bed according to claim 1, characterized in that: A hydrogen peroxide inlet pipe (12), a ferrous sulfate inlet pipe (13) and a sewage inlet pipe (14) are respectively connected to the edge of the upper surface of the reaction tank (2), and the outer walls of the hydrogen peroxide inlet pipe (12), the ferrous sulfate inlet pipe (13) and the sewage inlet pipe (14) are all sleeved with a first electromagnetic control valve (15).

4. The novel integrated circulating Fenton fluidized bed according to claim 1, characterized in that: A liquid outlet pipe (18) is connected through the lower end of the outer wall of one side of the storage barrel (10). The liquid outlet pipe (18) passes through the storage barrel (10) to the outside of the storage barrel (10) and is sleeved with a second electromagnetic control valve (19).

5. The novel integrated circulating Fenton fluidized bed according to claim 1, characterized in that: The front end of the bottom surface of the reaction tank (2) is connected to a sewage discharge pipe (20), which passes through the reaction tank (2) to the outside of the bottom plate (1) and is sleeved with a third electromagnetic control valve (21).

6. The novel integrated circulating Fenton fluidized bed according to claim 1, characterized in that: The water suction end of the water pump (17) penetrates the connecting plate (9) and is connected to the lower end of the outer wall of the reaction tank (2), and the water discharge end of the water pump (17) is connected to the upper end of the storage barrel (10).

7. The novel integrated circulating Fenton fluidized bed according to claim 1, characterized in that: A PLC control panel (22) is provided on the upper portion of the front end outer wall of the reaction tank (2).

8. The novel integrated circulating Fenton fluidized bed according to claim 1, characterized in that: A plurality of support legs (23) are fixedly connected to the edge of the lower surface of the base plate (1) and the edge of one side of the lower surface of the connecting plate (9).

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