Heterogeneous photo-electromagnetic Fenton reaction device

Abstract

The utility model discloses a heterogeneous photo-electromagnetic Fenton reaction device, which relates to the technical field of wastewater treatment, and comprises a bottom plate and a photovoltaic panel, the top of the bottom plate is fixedly connected with reaction equipment, the bottom of the reaction equipment is fixedly connected with a motor, the heterogeneous photo-electromagnetic Fenton reaction device adopts a heterogeneous Fenton device, and the bottom of the bottom plate is fixedly connected with the photovoltaic panel. The reaction pH value can be widened to 4-7, the addition of an acid reagent is reduced, a superimposed effect is formed through ultraviolet light and heterogeneous electro-Fenton technology, Fe < 3 + > / Fe < 2 + > circulation and H2O2 in-situ generation are efficiently promoted, the wastewater treatment efficiency of the Fenton reaction is improved, meanwhile, the raw material input is reduced, a heterogeneous Fenton catalyst is used, the iron mud yield is effectively reduced, the addition of an alkali reagent is reduced, and the wastewater treatment efficiency is improved. The post-treatment cost is optimized, the distribution and retention time of the heterogeneous catalyst in an aqueous solution is prolonged by controlling an electromagnetic device, and meanwhile, the catalyst can be recycled, so that the catalyst is recycled.

Description

TECHNICAL FIELD

[0001] The utility model relates to wastewater treatment technical field, concretely is a heterogeneous photoelectromagnetic fenton reaction device. BACKGROUND

[0002] Advanced oxidation processes (AOPs) is through using strong oxidant, such as hydroxyl radical, ozone and superoxide radical etc. to degrade the organic pollutants in wastewater technology, because its oxidizing property is strong, the operation condition is easy to control and is watched with interest. Among them, fenton oxidation technology has simple equipment, reaction speed is fast, degradation efficiency is high and becomes one of the most widely used AOPs, has been successfully applied to the treatment of various refractory organic wastewater, such as printing and dyeing, pharmaceutical, coking and papermaking wastewater etc.

[0003] Although fenton oxidation technology has significant advantages in wastewater treatment, but still has many deficiencies, such as strict pH limit (2~4), low H2O2 utilization rate and a large amount of iron-containing sludge etc. In recent years, in order to improve the oxidation capacity and degradation efficiency of fenton reaction, professional personnel begins to try to introduce light and electricity in fenton reaction. Electro-fenton is a kind of technology that generates ·OH in situ by electrochemical means to oxidize and degrade pollutants in organic wastewater, compared with traditional fenton method, the utilization rate of hydrogen peroxide and Fe 2+ Is improved. Light fenton technology introduces light radiation elements on the basis of traditional fenton technology, accelerates the conversion process of Fe 3+ To Fe 2+ , and promotes the decomposition of hydrogen peroxide to generate more ·OH, the advantage of this technology is not only to significantly improve the reaction rate and treatment efficiency, reduce the amount of chemical reagent, but also reduce the sludge production and treatment cost. Photoelectro-fenton technology is to produce more ·OH by light and electricity, so as to further improve the wastewater treatment efficiency.

[0004] According to the patent publication No. CN220703385U, a multi-effect photoelectro-fenton reaction equipment combines electro-fenton oxidation technology, light fenton oxidation technology and ozone technology, improves the wastewater treatment efficiency. Although the reaction equipment improves the fenton oxidation effect by light, electricity and ozone, but still has the problems of high reagent dosage and post-treatment. Therefore, a heterogeneous photoelectro-magnetic fenton reaction device is proposed. UTILITY MODEL CONTENT

[0005] In view of the deficiencies of the prior art, the utility model provides a heterogeneous photoelectro-magnetic fenton reaction device, which solves the problems of large reagent dosage, high post-treatment cost and low wastewater treatment efficiency in the prior art.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme to realize: a heterogeneous photoelectromagnetic fenton reaction device, including bottom plate and photovoltaic board, the top of bottom plate is fixedly connected with reaction equipment, the bottom of reaction equipment is fixedly connected with motor, the output of motor extends to the inside of reaction equipment, the outside of motor output is fixedly connected with bottom electromagnetic device, the outside of motor output and the top of bottom electromagnetic device are provided with two groups of stirrers, one side of reaction equipment inner chamber is installed with carbon nanotube cathode plate, the other side of reaction equipment inner chamber is installed with metal platinum anode plate, the top of bottom plate is fixedly connected with side plate, one side of side plate is installed with iron-based catalyst quantitative dosing device, one end of iron-based catalyst quantitative dosing device is fixedly connected with pipeline, and one end of pipeline extends to the inside of reaction equipment and is fixedly connected with top electromagnetic device, the surface of bottom electromagnetic device and the bottom surface of top electromagnetic device are all installed with a plurality of uv lamp beads.

[0007] Preferably, one side of the reaction equipment is provided with a sludge discharge pipe, the top of the bottom plate is fixedly connected with a sludge collecting device, and one end of the sludge discharge pipe is connected with one end of the sludge collecting device.

[0008] Preferably, one side of the reaction equipment and below the carbon nanotube cathode plate is provided with a water inlet pipe, and one side of the reaction equipment and below the top electromagnetic device is provided with a water outlet pipe, and one end of the water outlet pipe and the water inlet pipe extends to the inside of the reaction equipment.

[0009] Preferably, the top of the reaction equipment is fixedly connected with a pH automatic dosing control device, and the dosing end of the pH automatic dosing control device extends to the inside of the reaction equipment.

[0010] Preferably, one side of the side plate is fixedly connected with an oxygen generator, one end of the oxygen generator is provided with a pipeline, and one end of the pipeline extends to the inside of the reaction equipment and is provided with a microporous aeration disc.

[0011] Preferably, the top of the bottom plate is provided with a comprehensive power supply, the comprehensive power supply is electrically connected with the photovoltaic board, and the comprehensive power supply is electrically connected between the carbon nanotube cathode plate and the metal platinum anode plate.

[0012] The utility model provides a heterogeneous photoelectromagnetic fenton reaction device, has the following beneficial effects:

[0013] The heterogeneous photoelectromagnetic Fenton reaction device adopts a heterogeneous Fenton device, can widen the reaction pH value to 4 to 7, reduces the addition of acid reagents, forms a superposition effect through ultraviolet light and the heterogeneous electro-Fenton technology, efficiently promotes the Fe3+ / Fe2+ cycle and the in-situ generation of H2O2, improves the wastewater treatment efficiency of the Fenton reaction while reducing the raw material input, effectively reduces the iron sludge output by using the heterogeneous Fenton catalyst, reduces the addition of alkali reagents, optimizes the post-treatment cost, prolongs the distribution and residence time of the heterogeneous catalyst in the aqueous solution by controlling the electromagnetic device, and at the same time, the catalyst can be recovered and reused. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is an internal structure schematic view of the utility model.

[0015] In the figure: 1, reaction equipment; 2, water inlet pipe; 3, pH automatic dosing control device; 4, iron-based catalyst quantitative dosing device; 5, stirrer; 6, carbon nanotube cathode plate; 7, metal platinum anode plate; 8, oxygen generator; 9, microporous aeration disc; 10, ultraviolet lamp bead; 11, top electromagnetic device; 12, bottom electromagnetic device; 13, water outlet pipe; 14, sludge discharge pipe; 15, sludge collection device; 16, photovoltaic panel; 17, comprehensive power supply; 18, bottom plate; 19, motor; 20, side plate. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0017] Please refer to Figure 1 The utility model provides a technical scheme: a heterogeneous photoelectromagnetic Fenton reaction device, including bottom plate 18 and photovoltaic panel 16, the top of bottom plate 18 is fixedly connected with reaction equipment 1, the bottom of reaction equipment 1 is fixedly connected with motor 19, the output of motor 19 extends to the inside of reaction equipment 1, the outside of the output of motor 19 is fixedly connected with bottom electromagnetic device 12, the outside of the output of motor 19 and the top of bottom electromagnetic device 12 are provided with two groups of stirrers 5, one side of the inner chamber of reaction equipment 1 is installed with carbon nanotube cathode plate 6, the other side of the inner chamber of reaction equipment 1 is installed with metal platinum anode plate 7, the top of bottom plate 18 is fixedly connected with side plate 20, one side of side plate 20 is installed with iron-based catalyst quantitative dosing device 4, one end of iron-based catalyst quantitative dosing device 4 is fixedly connected with pipeline, and one end of the pipeline extends to the inside of reaction equipment 1 and is fixedly connected with top electromagnetic device 11, the surface of bottom electromagnetic device 12 and the bottom surface of top electromagnetic device 11 are all installed with a plurality of ultraviolet lamp beads 10.

[0018] The side of the reaction equipment 1 is provided with a sludge discharge pipe 14, the top of the bottom plate 18 is fixedly connected with a sludge collecting device 15, and one end of the sludge discharge pipe 14 is connected with one end of the sludge collecting device 15.

[0019] The side of the reaction equipment 1 and below the carbon nanotube cathode plate 6 is provided with a water inlet pipe 2, and the side of the reaction equipment 1 and below the top electromagnetic device 11 is provided with a water outlet pipe 13, both of which extend into the reaction equipment 1.

[0020] The top of the reaction equipment 1 is fixedly connected with a pH automatic dosing control device 3, and the dosing end of the pH automatic dosing control device 3 extends into the reaction equipment 1.

[0021] The side of the side plate 20 is fixedly connected with an oxygen generator 8, one end of the oxygen generator 8 is provided with a pipeline, and one end of the pipeline extends into the reaction equipment 1 and is provided with a microporous aeration disc 9.

[0022] The top of the bottom plate 18 is provided with a comprehensive power supply 17, the comprehensive power supply 17 is electrically connected with the photovoltaic panel 16, the comprehensive power supply 17 is electrically connected between the carbon nanotube cathode plate 6 and the metal platinum anode plate 7, the photovoltaic panel 16 is used to supply power to the whole device, further reducing the operation cost and realizing green and sustainable.

[0023] In summary, in use, water is injected into the inside of the water inlet pipe 2 through an external water source, and then the wastewater to be treated is introduced into the reaction device 1 through the water inlet pipe 2. When the wastewater height reaches the design height, the motor 19 is started. At this time, the output end of the motor 19 drives the bottom electromagnetic device 12 and the stirrer 5 to rotate. The pH automatic dosing control device 3 is used to add reagents into the inside of the reaction device 1 to adjust the pH value of the wastewater to 4-7. Then the iron-based catalyst quantitative feeder 4 is opened to add the iron-based catalyst 10-100 mg / L into the wastewater. After stirring for a few minutes, the carbon nanotube cathode plate 6 and the metal platinum anode plate 7 are powered on, and the oxygen generator 8 is turned on. Oxygen is input into the microporous aerator 9, and oxygen is input into the carbon nanotube cathode plate 6. The ultraviolet lamp bead 10 is turned on. At this time, the hydrogen peroxide generated in the solution reacts with the added iron-based catalyst to produce ·OH, thereby degrading the pollutants in the water. The ultraviolet lamp bead 10 also assists in further accelerating the catalytic reaction and the Fe3+ / Fe2+ cycle. After 2 min of the above reaction, the top electromagnetic device 11 is started to work intermittently to maintain the suspension state of the iron-based catalyst in the solution. The whole reaction process lasts for about 15-30 min. After the reaction is completed, the bottom electromagnetic device 12 is turned on, and the iron-based catalyst is captured by the electromagnet installed on the top electromagnetic device 11 or the bottom electromagnetic device 12, so as to realize rapid recovery and reuse. The supernatant is discharged from the water outlet pipe 13. The above water treatment process continues for multiple cycles, and part of the sludge is accumulated at the bottom end of the device. Then the sludge is discharged to the sludge collection device 15 through the sludge discharge pipe 14, and is further treated later.

[0024] A plurality of large-area high-efficiency N-type monocrystalline silicon solar photovoltaic panels 16 are installed outdoors to generate electric energy, which can be used to supply power to the top electromagnetic device 11, the bottom electromagnetic device 12, the ultraviolet lamp bead 10, and the motor 19, and the remaining electric energy can be stored by the comprehensive power supply 17 and used for subsequent work.

[0025] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacements or changes to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A heterogeneous photoelectromagnetic Fenton reaction device, comprising a base plate (18) and a photovoltaic panel (16), characterized in that: A reaction device (1) is fixedly connected to the top of the base plate (18), and a motor (19) is fixedly connected to the bottom of the reaction device (1). The output end of the motor (19) extends into the interior of the reaction device (1). A bottom electromagnetic device (12) is fixedly connected to the outside of the output end of the motor (19). Two sets of stirrers (5) are arranged outside the output end of the motor (19) and above the bottom electromagnetic device (12). A carbon nanotube cathode plate (6) is installed on one side of the inner cavity of the reaction device (1). (1) A metal platinum anode plate (7) is installed on the other side of the inner cavity. A side plate (20) is fixedly connected to the top of the bottom plate (18). An iron-based catalyst metering device (4) is installed on one side of the side plate (20). A pipe is fixedly connected to one end of the iron-based catalyst metering device (4), and one end of the pipe extends into the interior of the reaction equipment (1) and is fixedly connected to the top electromagnetic device (11). Several ultraviolet lamp beads (10) are installed on the surface of the bottom electromagnetic device (12) and the bottom surface of the top electromagnetic device (11).

2. The heterogeneous photoelectromagnetic Fenton reaction apparatus according to claim 1, characterized in that: A sludge discharge pipe (14) is installed on one side of the reaction equipment (1), and a sludge collection device (15) is fixedly connected to the top of the bottom plate (18). One end of the sludge discharge pipe (14) is connected to one end of the sludge collection device (15).

3. The heterogeneous photoelectromagnetic Fenton reaction apparatus according to claim 1, characterized in that: A water inlet pipe (2) is installed on one side of the reaction device (1) and below the carbon nanotube cathode plate (6), and a water outlet pipe (13) is installed on one side of the reaction device (1) and below the top electromagnetic device (11). One end of the water outlet pipe (13) and the water inlet pipe (2) both extend into the interior of the reaction device (1).

4. The heterogeneous photoelectromagnetic Fenton reaction apparatus according to claim 1, characterized in that: The top of the reaction equipment (1) is fixedly connected to an automatic pH dosing control device (3), and the dosing end of the automatic pH dosing control device (3) extends into the interior of the reaction equipment (1).

5. The heterogeneous photoelectromagnetic Fenton reaction apparatus according to claim 1, characterized in that: An oxygen generator (8) is fixedly connected to one side of the side plate (20). One end of the oxygen generator (8) is equipped with a pipe, and one end of the pipe extends into the interior of the reaction equipment (1) and is equipped with a microporous aeration disc (9).

6. The heterogeneous photoelectromagnetic Fenton reaction apparatus according to claim 1, characterized in that: A power supply (17) is installed on the top of the base plate (18). The power supply (17) is electrically connected to the photovoltaic panel (16) and electrically connected to the carbon nanotube cathode plate (6) and the metal platinum anode plate (7).

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