A green, efficient and rapid device for treating antibiotics in sewage

Abstract

The application provides a device for green, efficient and rapid treatment of antibiotics in sewage, and relates to the technical field of water treatment. The device for treatment of antibiotics in sewage comprises a low-temperature plasma double dielectric barrier discharge reactor, a peristaltic pump, a discharge power supply and a power supply controller. The low-temperature plasma double dielectric barrier discharge reactor comprises a treatment box, a quartz outer tube is fixedly connected to the inner diameter of the bottom of the water storage pool, a quartz inner tube is fixedly connected to the inner diameter of the top of the water storage pool, a uniform flow water outlet area is arranged between the quartz outer tube and the quartz inner tube, and an aluminum powder filling area is arranged between the metal aluminum tube and the quartz inner tube. The aluminum powder filled in the aluminum powder filling area improves the mass transfer efficiency, prevents the thermal expansion and cold contraction phenomenon in the discharge process, ensures the stability of the discharge process, and fully utilizes the generated ozone to catalyze the advanced oxidation reaction of the sewage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water treatment, in particular to a device for green, efficient and rapid treatment of antibiotics in sewage. BACKGROUND

[0002] Since antibiotics were discovered, they have been widely used in various fields such as medical treatment due to their important role in inhibiting and killing bacteria, and have played a crucial role in the development of modern medicine and human health. However, because a large amount of antibiotics are used or discharged into the natural soil and water environment, they cannot be absorbed by organisms or degraded under natural conditions, thus becoming a kind of persistent and difficult-to-degrade organic pollutant, posing a great threat to the ecological environment and biological health.

[0003] At present, biological degradation, membrane filtration, adsorption, photocatalysis and other advanced oxidation technologies are commonly used for degradation of antibiotics in sewage. However, biological degradation has a long cycle and cannot effectively treat antibiotics; membrane and adsorption technologies only concentrate antibiotics and do not fundamentally remove them, and may cause secondary pollution; and photocatalysis has the problems of long treatment time and low light energy utilization rate. Therefore, there is an urgent need for a simple and affordable method to efficiently degrade antibiotics in water. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a device for green, efficient and rapid treatment of antibiotics in sewage, which solves the problem of long degradation cycle and ineffective treatment of antibiotics in the conventional degradation method.

[0005] To achieve the above object, the present application is realized by the following technical scheme: a device for green, efficient and rapid treatment of antibiotics in sewage, comprising a low-temperature plasma double dielectric barrier discharge reactor, a peristaltic pump, a discharge power supply and a power supply controller, the low-temperature plasma double dielectric barrier discharge reactor comprising a treatment box, the top of the treatment box being fixedly connected with a top plate, the bottom center of the top plate being fixedly connected with a water storage tank, the inner diameter of the bottom of the water storage tank being fixedly connected with a quartz outer tube, the inner diameter of the top of the water storage tank being fixedly connected with a quartz inner tube, a uniform flow outlet water area being arranged between the quartz outer tube and the quartz inner tube, an insulating sleeve being penetrated and fixedly connected at the center of the top plate, a metal aluminum tube being fixedly connected in the insulating sleeve, an aluminum powder filling area being arranged between the metal aluminum tube and the quartz inner tube, a wiring terminal being fixedly connected on the left side of the treatment box, and the wiring terminal being electrically connected with the discharge power supply.

[0006] Preferably, the water storage tank top is fixedly connected with water inlets penetrating through both sides, one end of the water inlet penetrates through the top plate, the top end of the water inlet is connected with the water outlet of the peristaltic pump through a water inlet pipe, an inner cavity is arranged in the water storage tank, and an earth terminal is arranged at the top of the insulating sleeve and one end of the earth terminal is in contact with the aluminum pipe.

[0007] Preferably, the bottom plate is fixedly connected with the bottom of the processing box, support legs are fixedly connected at the positions of the four corners of the bottom plate, and a liquid discharge port is formed in the bottom of the bottom plate and corresponds to the position of the uniform flow water outlet area.

[0008] Preferably, the power supply controller is electrically connected with the discharge power supply, and the water storage tank is fixedly connected with a liquid outlet on the outside.

[0009] Preferably, a method for using a green, efficient and rapid device for treating antibiotics in sewage comprises the following steps:

[0010] S1. Water inlet

[0011] First, the peristaltic pump works to pump the sewage containing antibiotics from the water inlet pipe into the water inlet, and the sewage falls into the inner cavity in the water storage tank, and when the sewage accumulates to a certain height, it flows into the uniform flow water outlet area over the quartz outer pipe;

[0012] S2. Discharge degradation

[0013] The discharge power supply is controlled by the power supply controller to start power supply for the terminal, so that the electrode wire mesh discharges, the sewage flows through the discharge area through the uniform flow water outlet area to generate a high-level oxidation reaction, so that the antibiotics in the sewage are degraded, and the ozone generated during degradation is retained in the uniform flow water outlet area to produce a catalytic effect for the subsequent degradation process, and the sewage after the initial treatment is recirculated to the peristaltic pump through the liquid outlet for pumping treatment, the discharge voltage of the terminal is 60V-90V, the current is 2-3A, and after 20-60min of discharge treatment, the antibiotics in the sewage are completely degraded.

[0014] Working principle: first, the sewage containing antibiotics is pumped from the water inlet pipe, the sewage falls into the inner cavity, when the sewage accumulates to a certain height, it flows into the uniform flow water outlet area over the quartz outer pipe, the discharge power supply is controlled to start power supply, so that the electrode wire mesh discharges, the sewage flows through the discharge area to generate a high-level oxidation reaction, so that the antibiotics in the sewage are degraded, and the ozone generated during degradation is retained in the inner cavity to produce a catalytic effect for the subsequent degradation process, and the water after degradation flows out through the liquid discharge port, and the remaining sewage in the water storage tank can be discharged through the liquid outlet.

[0015] The application provides a green, efficient and rapid device for treating antibiotics in sewage.

[0016] 1, the present application improves the mass transfer efficiency by filling aluminum powder in the aluminum powder filling area, prevents the phenomenon of thermal expansion and cold shrinkage during discharging, and ensures the stability of the discharging process; the outer layer of the treatment box is protected to form a closed system, and the generated ozone is fully utilized to catalyze the advanced oxidation reaction of sewage, and the treatment box is made of insulating material to ensure the safety during the reaction. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective view of the reactor of the present application;

[0018] Figure 2 It is a sectional view of the reactor of the present application;

[0019] Figure 3 It is a bottom perspective view of the reactor of the present application;

[0020] Figure 4 It is Figure 2 the enlarged view of A in the middle;

[0021] Figure 5 It is a schematic diagram of the overall structure of the present application;

[0022] Figure 6 It is a schematic diagram of the antibiotic degradation rate of the present application.

[0023] 1, treatment box;2, top plate;3, bottom plate;4, support leg;5, insulating sleeve;6, grounding terminal;7, water inlet;8, terminal;9, water storage tank;10, liquid outlet;11, inner cavity;12, quartz outer tube;13, uniform flow outlet area;14, quartz inner tube;15, aluminum powder filling area;16, electrode wire mesh;17, aluminum pipe;18, low-temperature plasma double dielectric barrier discharge reactor;19, peristaltic pump;20, discharge power supply;21, power supply controller;22, liquid outlet. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0025] Example 1

[0026] As Figures 1-5As shown, the embodiment of the present application provides a green, efficient and fast device for treating antibiotics in sewage, which comprises a low-temperature plasma double dielectric barrier discharge reactor 18, a peristaltic pump 19, a discharge power supply 20 and a power supply controller 21. The low-temperature plasma double dielectric barrier discharge reactor 18 comprises a treatment box 1, the top of which is fixedly connected with a top plate 2, the bottom center of which is fixedly connected with a water storage tank 9, the bottom inner diameter of which is fixedly connected with a quartz outer tube 12, the top inner diameter of which is fixedly connected with a quartz inner tube 14, and the space between the quartz outer tube 12 and the quartz inner tube 14 is provided with a uniform outflow water area 13. The center of the top plate 2 is penetrated and fixedly connected with an insulating sleeve 5, the inside of which is fixedly connected with a metal aluminum tube 17, and the space between the metal aluminum tube 17 and the quartz inner tube 14 is provided with an aluminum powder filling area 15. The left side of the treatment box 1 is fixedly connected with a wiring terminal 8, which is electrically connected with the discharge power supply 20.

[0027] The top of the water storage tank 9 is penetrated and fixedly connected with a water inlet 7, one end of which penetrates through the top plate 2. The top end of the water inlet 7 is connected with the water outlet of the peristaltic pump 19 through a water inlet pipe. The inside of the water storage tank 9 is provided with an inner cavity 11. The top of the insulating sleeve 5 is penetrated and provided with a grounding terminal 6, one end of which is in contact with the metal aluminum tube 17.

[0028] The bottom of the treatment box 1 is fixedly connected with a bottom plate 3, the bottom of which is fixedly connected with support legs 4 at the four corner positions. The bottom of the bottom plate 3 is provided with a liquid discharge port 10, which corresponds in position to the uniform outflow water area 13.

[0029] The power supply controller 21 is electrically connected with the discharge power supply 20. The outer side of the water storage tank 9 is fixedly connected with a liquid outlet 22.

[0030] A method for using a green, efficient and fast device for treating antibiotics in sewage, comprising the following steps:

[0031] S1. Water inlet

[0032] First, the peristaltic pump 19 works to pump the sewage containing antibiotics from the water inlet pipe into the water inlet 7, and the sewage falls into the inner cavity 11 in the water storage tank 9. When the sewage accumulates to a certain height, it flows uniformly into the uniform outflow water area 13 over the quartz outer tube 12;

[0033] S2. Discharge degradation

[0034] The power controller 21 controls the discharge power supply 20 to start supplying power to the terminal 8, thereby causing the electrode wire mesh 16 to discharge. The sewage flows through the discharge area through the uniform flow effluent zone 13 and generates an advanced oxidation reaction, which degrades the antibiotics in the sewage. The ozone generated during the degradation process is retained in the uniform flow effluent zone 13 and acts as a catalyst for subsequent degradation processes. The sewage after the initial treatment flows back to the peristaltic pump 19 through the outlet 22 for circulation pumping. The discharge voltage of the terminal 8 is 60V and the current is 2A. After 20 minutes of discharge treatment, the antibiotics in the sewage are completely degraded.

[0035] Example 2:

[0036] like Figures 1-5 As shown, this embodiment of the invention provides a green, efficient, and rapid device for treating antibiotics in wastewater, including a low-temperature plasma dual-dielectric barrier discharge reactor 18, a peristaltic pump 19, a discharge power supply 20, and a power controller 21. The low-temperature plasma dual-dielectric barrier discharge reactor 18 includes a treatment tank 1, a top plate 2 fixedly connected to the top of the treatment tank 1, a water storage tank 9 fixedly connected to the center of the bottom of the top plate 2, a quartz outer tube 12 fixedly connected to the bottom inner diameter of the water storage tank 9, a quartz inner tube 14 fixedly connected to the top inner diameter of the water storage tank 9, a uniform flow outlet zone 13 provided between the quartz outer tube 12 and the quartz inner tube 14, an insulating sleeve 5 penetrating and fixedly connected to the center of the top plate 2, an aluminum tube 17 fixedly connected inside the insulating sleeve 5, an aluminum powder filling zone 15 provided between the aluminum tube 17 and the quartz inner tube 14, and a terminal block 8 fixedly connected to the left side of the treatment tank 1, the terminal block 8 being electrically connected to the discharge power supply 20.

[0037] Water inlets 7 are fixedly connected to both sides of the top of the water storage tank 9, and one end of the water inlet 7 passes through the top plate 2. The top of the water inlet 7 is connected to the outlet of the peristaltic pump 19 through the water inlet pipe. An inner cavity 11 is provided inside the water storage tank 9. The top of the insulating sleeve 5 is provided with a grounding terminal 6, and one end of the grounding terminal 6 is in contact with the metal aluminum pipe 17.

[0038] The bottom of the treatment tank 1 is fixedly connected to a base plate 3, and support legs 4 are fixedly connected to the four corners of the bottom of the base plate 3. The bottom of the base plate 3 has a drain port 10, and the drain port 10 corresponds to the position of the uniform flow water outlet 13.

[0039] The power controller 21 is electrically connected to the discharge power supply 20, and the water storage tank 9 has a liquid outlet 22 fixedly connected to the outside.

[0040] A method for using a green, efficient, and rapid device for treating antibiotics in wastewater includes the following steps:

[0041] S1. Water inlet

[0042] First, the peristaltic pump 19 works to pump the sewage containing antibiotics from the inlet pipe to the inlet 7. The sewage falls into the inner cavity 11 of the storage tank 9. When the sewage accumulates to a certain height, it flows through the quartz outer tube 12 and flows evenly into the uniform flow outlet area 13.

[0043] S2. Discharge degradation

[0044] The power controller 21 controls the discharge power supply 20 to start supplying power to the terminal 8, thereby causing the electrode wire mesh 16 to discharge. The sewage flows through the discharge area through the uniform flow effluent zone 13 and generates an advanced oxidation reaction, which degrades the antibiotics in the sewage. The ozone generated during the degradation process is retained in the uniform flow effluent zone 13 to catalyze the subsequent degradation process. The sewage after the initial treatment flows back to the peristaltic pump 19 through the outlet 22 for circulation pumping. The discharge voltage of the terminal 8 is 90V and the current is 3A. After 60 minutes of discharge treatment, the antibiotics in the sewage are completely degraded.

[0045] Example 3:

[0046] like Figure 6 As shown, this embodiment of the invention provides a green, efficient, and rapid device for treating antibiotics in wastewater, used in a control experiment to treat different types of antibiotics:

[0047] Four different types of antibiotics—tetracycline, ciprofloxacin, nitrofurantoin, and sulfamethoxazole—were selected as representative antibiotics. An antibiotic treatment solution, artificially prepared under laboratory conditions, was used as simulated wastewater. A 50 μg / L solution was poured from inlet 7 into storage tank 9, and the flow rate of peristaltic pump 19 was adjusted. Once the water level rose and passed over the quartz outer tube 12, it flowed through the uniform outlet zone 13 like a waterfall through the discharge zone. The current of the discharge power supply 20 was adjusted to discharge the antibiotic treatment solution. The solution was then circulated by peristaltic pump 19 for 30 minutes to achieve complete antibiotic degradation. The degradation rate of the antibiotics by the device is as follows: Figure 6 As shown.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for green, efficient and rapid treatment of antibiotics in wastewater, comprising a low-temperature plasma double dielectric barrier discharge reactor (18), a peristaltic pump (19), a discharge power supply (20) and a power supply controller (21), characterized in that: The low-temperature plasma double dielectric barrier discharge reactor (18) comprises a treatment box (1), a top plate (2) is fixedly connected to the top of the treatment box (1), a water storage tank (9) is fixedly connected to the bottom center of the top plate (2), a quartz outer tube (12) is fixedly connected to the bottom inner diameter of the water storage tank (9), a quartz inner tube (14) is fixedly connected to the top inner diameter of the water storage tank (9), a uniform flow water outlet area (13) is arranged between the quartz outer tube (12) and the quartz inner tube (14), an insulating sleeve (5) is penetrated and fixedly connected to the center of the top plate (2), a metal aluminum tube (17) is fixedly connected in the insulating sleeve (5), an aluminum powder filling area (15) is arranged between the metal aluminum tube (17) and the quartz inner tube (14), a wiring terminal (8) is fixedly connected to the left side of the treatment box (1), and the wiring terminal (8) is electrically connected with a discharge power supply (20). The power supply controller (21) is electrically connected with the discharge power supply (20), and a liquid outlet (22) is fixedly connected to the outside of the water storage tank (9).

2. The device for green, efficient and rapid treatment of antibiotics in wastewater according to claim 1, characterized in that: Water inlets (7) are penetrated and fixedly connected to the top of the water storage tank (9), and one end of the water inlets (7) penetrates the top plate (2), the top ends of the water inlets (7) are connected with the water outlets of peristaltic pumps (19) through water inlets, an inner cavity (11) is arranged in the water storage tank (9), a grounding terminal (6) is penetrated and arranged at the top of the insulating sleeve (5), and one end of the grounding terminal (6) is in contact with the metal aluminum tube (17).

3. The green, efficient and rapid device for treating antibiotics in sewage according to claim 1, characterized in that: A bottom plate (3) is fixedly connected to the bottom of the treatment box (1), support legs (4) are fixedly connected to the bottom corners of the bottom plate (3), and a liquid discharge port (10) is formed in the bottom of the bottom plate (3) and corresponds to the position of the uniform flow water outlet area (13).

4. The use of a green, efficient, and rapid device for treating antibiotics in wastewater according to any one of claims 1-3, characterized in that: The method comprises the following steps: S1. Water inlet Firstly, the peristaltic pump (19) works to pump the sewage containing antibiotics from the water inlet pipe into the water inlets (7), and the sewage falls into the inner cavity (11) in the water storage tank (9), and when the sewage accumulates to a certain height, it flows into the uniform flow water outlet area (13) over the quartz outer tube (12); S2. Discharge degradation The discharge power supply (20) is controlled by the power supply controller (21) to supply power to the wiring terminal (8), so that the electrode wire net (16) discharges, the sewage flows through the discharge area through the uniform flow water outlet area (13) to generate a high-level oxidation reaction, so that the antibiotics in the sewage are degraded, and the ozone generated during the degradation is retained in the uniform flow water outlet area (13) to produce a catalytic effect for the subsequent degradation process, and the sewage after the initial treatment is again returned to the peristaltic pump (19) through the liquid outlet (22) for circulating pumping treatment, the discharge voltage of the wiring terminal (8) is 60V-90V, the current is 2-3A, and the sewage is completely degraded after the discharge treatment for 20-60min.

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