Ozone oxidation experiment device

Abstract

The utility model discloses an ozone oxidation experimental device which comprises a feed liquid barrel A, a feed liquid barrel B, a reaction tank, a circulating pump, an ozone destroying device, an ozone generator and an aeration system, the feed liquid barrel A is communicated with a liquid inlet of the reaction tank through a circulating pump, a liquid outlet of the reaction tank is communicated with the feed liquid barrel B through a circulating pump, and the feed liquid barrel A and the feed liquid barrel B are respectively provided with a feed liquid discharge port; the top of the reaction tank is communicated with the ozone destroying device, and the bottom of the reaction tank is communicated with the ozone generator; the device integrates an ozone oxidation method, a catalytic oxidation method and an ultraviolet irradiation oxidation method, so that the efficiency of reducing COD (Chemical Oxygen Demand) in water is greatly improved.

Description

Technical Field

[0001] The utility model relates to the fields of environmental protection technology and water treatment equipment development, etc., and particularly relates to an ozone oxidation experimental device. Background Art

[0002] At present, in sewage treatment, the following are several common methods for reducing Chemical Oxygen Demand (COD) in water:

[0003] (1) Biological treatment method: A method of using specific microorganisms to metabolize to produce carbon dioxide and water to reduce COD in water;

[0004] (2) Chemical oxidation method: Using oxidants such as hydrogen peroxide, ozone, chlorine dioxide, etc. to oxidize organic substances in water and convert them into carbon dioxide and water;

[0005] (3) Physical adsorption and precipitation method: Using activated carbon to adsorb COD or flocculants such as polyaluminum chloride and polyacrylamide to flocculate and precipitate organic substances in water, so as to achieve the purpose of reducing COD;

[0006] As a very strong oxidant, ozone has the advantages of no secondary pollution, simple operation, low production cost, etc., and is most widely used in reducing COD in water. This device can combine ozone oxidation, catalytic oxidation method, and ultraviolet oxidation into one, greatly improving the efficiency of ozone in reducing COD. Summary of the Invention

[0007] To achieve the above object, the inventor provides an ozone oxidation experimental device, including: liquid material barrel A, liquid material barrel B, reaction tank, circulation pump, ozone destruction device, ozone generator, aeration system;

[0008] The liquid material barrel A is communicated with the liquid inlet of the reaction tank through a circulation pump, and the liquid outlet of the reaction tank is communicated with the liquid material barrel B through a circulation pump. The liquid material barrel A and the liquid material barrel B are respectively provided with liquid material discharge ports;

[0009] The top of the reaction tank is communicated with the ozone destruction device, and the bottom of the reaction tank is communicated with the ozone generator.

[0010] As a preferred structure of the utility model, the reaction tank is a cylindrical tank body, the top of the reaction tank is provided with a detachable plug, the tank body main body and the plug are made of plexiglass, the liquid inlet of the reaction tank is arranged at the upper part of the side body of the tank body, the liquid outlet of the reaction tank is arranged at the lower part of the side body of the tank body, and stop switches are respectively arranged at the liquid inlet and the liquid outlet of the reaction tank.

[0011] As a preferred structure of the utility model, a plurality of partition plates are arranged in the reaction tank along the height direction of the tank body, and a packing baffle is arranged below the partition plates.

[0012] As a preferred structure of the present utility model, a plurality of partition plates are evenly and cross - arranged on the inner wall of the tank body along the height direction of the tank body. Ultraviolet lamp belts are respectively arranged on the partition plates, and a plurality of round holes are arranged on the packing baffle.

[0013] As a preferred structure of the present utility model, the partition plates and the packing baffle are made of plexiglass.

[0014] As a preferred structure of the present utility model, an aeration head is arranged at the bottom of the reaction tank, and the aeration head is communicated with an ozone generator through an aeration pipe.

[0015] As a preferred structure of the present utility model, it further includes a frame, and the liquid storage tank A, the liquid storage tank B, the circulation pump and the reaction tank are arranged on the frame in sequence.

[0016] As a preferred structure of the present utility model, the circulation pump is a peristaltic pump.

[0017] Different from the prior art, the beneficial effects achieved by the above - mentioned technical solutions are as follows:

[0018] (1) A plurality of partition plates are arranged in the reaction tank. The function of the partition plates is to change the flow direction of the liquid in the reaction tank, increase the contact area between the liquid and ozone or the packing, and improve the effect of ozone or the packing in reducing COD.

[0019] (2) Ultraviolet lamp belts are arranged on the partition plates in the reaction tank. In most of the existing devices for reducing COD, the ultraviolet irradiation and ozone oxidation or packing adsorption are not carried out synchronously. In this device, the ultraviolet irradiation can be carried out synchronously with ozone oxidation or packing adsorption. The ultraviolet irradiation cooperates with ozone oxidation or packing adsorption to achieve a synergistic effect of "1 + 1>2".

[0020] (3) A packing baffle with dense round holes is arranged in the reaction tank. The packing baffle can prevent the packing from falling to the bottom of the reaction tank and interfering with the aeration head. At the same time, the dense round holes can increase the contact between ozone and the liquid in the reaction tank and improve the oxidation rate.

[0021] (4) An aeration head is arranged at the bottom of the reaction tank. Aeration can provide dissolved oxygen, form bubbles when injecting ozone into the liquid. During the rising process of the bubbles, ozone is dissolved into the water. At the same time, during the rising and bursting process of the bubbles, the water body is driven to move, forming convection and vortices, enhancing the contact between the liquid and ozone, and improving the oxidation rate.

[0022] (5) A sealing cover is arranged at the top of the reaction tank, which can inhibit the emission of ozone. At the same time, the top is connected to an ozone destruction device to prevent the ozone in the reaction tank from spreading to the surrounding environment and harming the operators.

[0023] (6) The peristaltic pump is adopted for the circulation pump of this device. The peristaltic pump can control the high-precision output of fluid, with stable flow rate, no pollution to the fluid, and low noise. By using the peristaltic pump, the flow rates at the inlet and outlet can be precisely controlled to keep them consistent. By adjusting the flow rates at the inlet and outlet, the residence time of the stock solution in the reaction tank can be controlled.

[0024] (7) This device can efficiently, continuously, stably and diversely reduce the COD in water. It integrates chemical oxidation method, physical adsorption method and light irradiation method, complementing each other, greatly improving the efficiency of reducing COD in water, harmless to operators, with little environmental requirements for the device, and having a wide range of application scenarios. Description of the Drawings

[0025] Figure 1 is the three-dimensional view of the ozone oxidation experimental device described in the specific implementation manner Figure 1 ;

[0026] Figure 2 is the three-dimensional view of the ozone oxidation experimental device described in the specific implementation manner Figure 2 ;

[0027] Figure 3 is the front view of the reaction tank of the ozone oxidation experimental device described in the specific implementation manner Figure I left view Figure II rear view Figure III ;

[0028] Figure 4 is the sectional view of the reaction tank of the ozone oxidation experimental device described in the specific implementation manner;

[0029] Figure 5 is the transverse sectional view of different positions of the reaction tank of the ozone oxidation experimental device described in the specific implementation manner;

[0030] Figure 6 is the partial enlarged view of the reaction tank of the ozone oxidation experimental device described in the specific implementation manner;

[0031] Figure 7 is the partial enlarged view of the partition board of the ozone oxidation experimental device described in the specific implementation manner.

[0032] Description of the Reference Numerals:

[0033] 101, ozone destruction device; 102, ozone generator; 201, reaction tank; 301, frame; 302, liquid storage tank A; 303, liquid storage tank B; 304, peristaltic pump; 1, inlet pipeline; 2, outlet pipeline; 3, ozone destruction pipeline; 4, ozone delivery pipeline; 5, reaction tank inlet; 6, reaction tank outlet; 7, partition board; 8, packing baffle; 9, aeration head; 10, catalytic oxidation packing; 11, ultraviolet lamp strip. Detailed implementation manners

[0034] To describe in detail the technical content, structural features, achieved objectives and effects of the technical solution, the following will be described in detail with reference to specific embodiments and in conjunction with the accompanying drawings.

[0035] As Figures 1 to 6 shown, this embodiment provides an ozone oxidation experimental device, including: a liquid material bucket A302, a liquid material bucket B303, a reaction tank 201, a peristaltic pump 304, an ozone destruction device 101, an ozone generator 102, and an aeration head 9; in this embodiment, the liquid material bucket A is connected to the liquid inlet of the reaction tank through a liquid inlet pipeline 1 via a peristaltic pump, and the liquid outlet of the reaction tank 6, the peristaltic pump and the liquid material bucket B are connected through a liquid outlet pipeline 2. The liquid material bucket A is provided with a liquid material discharge port, and the liquid material bucket B is provided with a liquid material discharge port.

[0036] As Figures 1 to 6 shown, the top of the reaction tank is connected to the ozone destruction device 101 through an ozone destruction pipeline 3, and the bottom of the reaction tank is connected to the ozone generator through an ozone delivery pipeline 4.

[0037] As Figures 3 to 6 shown, the reaction tank 201 is a cylindrical tank body with a detachable cover plug at the top. The main body of the tank and the cover plug are made of plexiglass. Inlet and outlet ports are provided at both the upper and lower ends on the side wall of the tank body. The upper end is the liquid inlet of the reaction tank 5, and the lower end is the liquid outlet of the reaction tank 6. Stop switches are installed at both the liquid inlet and the liquid outlet of the reaction tank. There are several partition plates 7 and packing baffles 8 in the reaction tank. An aeration head 9 is provided at the bottom of the reaction tank, and the aeration head 9 is connected to the ozone generator 102 through an aeration pipe. The reaction tank is provided with a liquid material discharge port.

[0038] As Figures 3 to 7 Therefore, partition plates 7 with consistent intervals are provided on the tube wall of the reaction tank 201. The partition plates are arranged crosswise. As Figure 3 shown in Ⅰ, Ⅱ, Ⅲ in Figure 4 and

[0039] shown, ultraviolet lamp belts 11 are provided on the partition plates, and a packing baffle 8 with a round hole is provided below the baffle. Catalytic oxidation packing 11 can be optionally added. The materials of the partition plates and the packing baffle are both plexiglass. Figures 1 to 2 shown, in some embodiments, in order to facilitate the placement of the liquid material bucket A, the liquid material bucket B, the reaction tank 201, the peristaltic pump 304 and save space, this device further includes a frame 301. The liquid material bucket A, the liquid material bucket B, the reaction tank 201, and the peristaltic pump 304 are arranged in sequence on the frame 301. The ozone destruction device 101 and the ozone generator 102 are connected to the top and the bottom of the reaction tank respectively through rubber hoses. The liquid material bucket A, the liquid material bucket B, and the reaction tank 201 are all detachable objects.

[0040] In the specific implementation process of the above embodiments, before starting the device, connect the liquid material barrel A, the peristaltic pump, and the liquid inlet of the reaction tank with a rubber hose, and connect the liquid outlet of the reaction tank, the peristaltic pump, and the liquid material barrel B with a rubber hose. During this process, close the bottom outlets of the liquid material barrel A and the liquid material barrel B. Connect the ozone destruction device to the top of the reaction tank with a rubber hose. Connect the ozone generator to the bottom of the reaction tank with a rubber hose. After the connection is completed, add the stock solution to the liquid material barrel A. Start the circulation pump. In this embodiment, the peristaltic pump is used as the circulation pump to transport the stock solution into the reaction tank through the peristaltic pump.

[0041] The stock solution is transported into the reaction tank through the peristaltic pump inlet pipeline. Start the ozone generator to make ozone contact with the stock solution through the aeration device. At the same time, turn on the ultraviolet lamp strip on the partition or put the catalytic oxidation filler 10, such as TiO2, activated alumina, etc., into the reaction tank. After the liquid in the reaction tank reaches a certain volume, start the peristaltic pump outlet pipeline to transport the liquid in the reaction tank into the liquid material barrel B. In this step, the stock solution in the liquid material barrel A undergoes the process of ozone oxidation.

[0042] During the experiment, any one, two, or all three of the three methods of reducing COD, namely ozone, ultraviolet light, and adding catalytic oxidation filler, can be selected to analyze the most effective and rapid method of reducing the COD of the stock solution. The peristaltic pump can accurately control the inflow and outflow rates of the reaction tank, and can accurately control the residence time of the stock solution in the reaction tank, so as to analyze the best time for reducing COD.

[0043] During the experiment, except when adding the filler into the reaction tank, the top of the reaction tank should be sealed with a lid plug at other times to prevent ozone from leaking out and polluting the surrounding environment and harming the operators.

[0044] After the experiment, the ozone destruction device can be turned on to destroy the residual ozone in the reaction tank, so as to prevent ozone from leaking out and polluting the surrounding environment and harming the operators. Open the switches at the bottoms of the liquid material barrel A, the liquid material barrel B, and the reaction tank to drain the internal liquid. Disassemble the liquid material barrel A, the liquid material barrel B, and the reaction tank to clean their interiors.

[0045] With the above structure, the device can work efficiently and continuously, reducing the COD in the stock solution from 100 - 1000 mg / L to 50 mg / L. By taking advantage of the peristaltic pump's ability to accurately control the inlet and outlet flow rates, the residence time t (unit: hours) of the stock solution in the reaction tank is controlled. The specific formula is t = L / Q (L: the volume of the solution in the reaction tank, unit: liters; Q: the inlet and outlet flow rates controlled by the peristaltic pump, unit: liters per hour) to distinguish the treatment effects. Specifically, when the residence time is two hours, the COD is reduced to 50 mg / L; when the residence time is four hours, the COD is reduced to 30 mg / L; when the residence time is six hours, the COD is reduced to 20 mg / L... During the residence process, by adding catalytic oxidation fillers or turning on the ultraviolet lamp strip, the COD can be reduced to a lower level within the same time or the COD can be reduced to below the lower limit that can only be achieved by ozone oxidation alone.

[0046] Moreover, its operation is simple, harmless to the surrounding environment and operators, and has little environmental requirements for the device. Compared with other methods of reducing COD, this device combines multiple COD reduction methods into one, which are carried out simultaneously, being efficient and concise.

[0047] It should be noted that although the above embodiments have been described in this article, it does not limit the patent protection scope of the present utility model. Therefore, based on the innovative concept of the present utility model, any changes and modifications made to the embodiments described in this article, or equivalent structural or equivalent process transformations made using the content of the specification and drawings of the present utility model, directly or indirectly applying the above technical solutions to other related technical fields, are all included in the patent protection scope of the present utility model.

Claims

1. An ozone oxidation experimental device, characterized in that: include: Liquid tank A, liquid tank B, reaction tank, circulation pump, ozone destruction device, ozone generator, aeration system; The liquid barrel A is connected to the liquid inlet of the reaction tank through a circulation pump, and the liquid outlet of the reaction tank is connected to the liquid barrel B through a circulation pump. The liquid barrel A and the liquid barrel B are respectively provided with liquid discharge outlets; The top of the reaction tank is connected to the ozone destruction device, and the bottom of the reaction tank is connected to the ozone generator; A plurality of partitions are arranged in the reaction tank along the height direction of the tank body, and a filler baffle is arranged below the partitions; A plurality of partitions are evenly and cross-arranged on the inner wall of the tank along the height direction of the tank body, ultraviolet light strips are respectively arranged on the partitions, and a plurality of circular holes are arranged on the filler baffle.

2. The ozone oxidation experimental device according to claim 1, characterized in that: The reaction tank is a cylindrical tank body with a detachable cover plug on the top. The tank body and the cover plug are made of plexiglass. The liquid inlet of the reaction tank is arranged on the upper side of the tank body, and the liquid outlet of the reaction tank is arranged on the lower side of the tank body. The liquid inlet and the liquid outlet of the reaction tank are respectively provided with cut-off switches.

3. The ozone oxidation experimental device according to claim 1, characterized in that: The partition plate and the filler baffle are made of organic glass.

4. The ozone oxidation experimental device according to any one of claims 1 to 3, characterized in that: An aeration head is provided at the bottom of the reaction tank, and the aeration head is connected to the ozone generator through an aeration pipe.

5. The ozone oxidation experimental device according to any one of claims 1 to 3, characterized in that: It also includes a frame, and the liquid barrel A, liquid barrel B, circulation pump, and reaction tank are arranged on the frame.

6. The ozone oxidation experimental device according to any one of claims 1 to 3, characterized in that: The circulation pump is a peristaltic pump.

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