Ozone oxidation device for sewage treatment

Abstract

The utility model discloses an ozone oxidation device for sewage treatment, which belongs to the technical field of ozone oxidation and comprises a treatment tank, the top end and the bottom end of the treatment tank are respectively provided with a sewage inlet and a sewage outlet, and a stirring part is arranged in the treatment tank; an ozone release box is arranged at the lower part in the treatment tank, the top end of the ozone release box is communicated with the interior of the treatment tank through a second filter screen, and the ozone release box is communicated with an ozone generator through an air inlet pipe and is communicated with the upper part of the treatment tank through a return pipe; a pump is installed on the return pipe, the return pipe can pump fluid on the upper portion of the treatment tank into the ozone release box, a rotating shaft is rotationally arranged in the output end of the return pipe, and blades are arranged on the rotating shaft. Sewage on the upper layer of the treatment tank and bubbles are pumped into the ozone release box through the return pipe, the bubbles are scattered by the blades, the bubbles leaving the ozone release box are smaller by the second filter screen, and the formed small bubbles are scattered by the stirring piece, so that the sewage purification effect is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ozone oxidation, specifically relates to a kind of ozone oxidation device for sewage treatment. BACKGROUND

[0002] Ozone oxidation is a kind of technology using ozone gas to oxidize and decompose pollutants, ozone is a strong oxidant, can react with many pollutants, and decompose into harmless substances, it has the advantages of high efficiency, fast, no secondary pollution, etc., and has been widely used in water treatment, air purification, medical health and other fields.In the process of sewage treatment, through the chemical reaction of ozone and sewage oxidation catalysis, to achieve the purpose of removing pollutants in water.

[0003] The existing technology has the following problems: the ozone in the device cannot fully contact with the sewage, which reduces the disinfection efficiency of the sewage, and ozone is easily formed into bubbles when mixed with sewage, the ozone in the bubbles cannot be utilized.

[0004] In view of the above problems existing in the prior art, the utility model combines years of design and use experience in related fields, and designs and manufactures an ozone oxidation device for sewage treatment to overcome the above defects. SUMMARY

[0005] For the problems existing in the prior art, the ozone oxidation device for sewage treatment provided by the utility model fully mixes ozone and sewage, improves the disinfection efficiency of the sewage, can pump the liquid containing bubbles on the device to the bottom of the device, pierce the bubbles, make the released ozone re-mix with the sewage, and improve the sewage disinfection effect and ozone utilization rate.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: an ozone oxidation device for sewage treatment, comprising a treatment tank, a sewage inlet and a sewage outlet are arranged at the top end and the bottom end of the treatment tank respectively, a stirring part is arranged in the treatment tank; an ozone release box is arranged in the treatment tank, and the ozone release box is located at the lower part of the treatment tank; the top end of the ozone release box is communicated with the inside of the treatment tank through a second filter screen, the ozone release box is communicated with an ozone generator through an air inlet pipe, and the ozone release box is communicated with the upper part of the treatment tank through a reflux pipe; a pump is installed on the reflux pipe, the reflux pipe can pump the fluid in the upper part of the treatment tank into the ozone release box, a rotating shaft is arranged in the inside of the output end of the reflux pipe, and blades are arranged on the rotating shaft.

[0007] Preferably, the stirring piece comprises a vertically arranged rotating rod, the rotating rod is rotatably installed on the treatment tank, a plurality of defoaming pieces are arranged on the rotating rod, the defoaming pieces are located in the treatment tank, the top end of the rotating rod extends out of the treatment tank and is connected with a motor, and the lower end of the rotating rod extends into the ozone releasing box and is rotatably connected with the ozone releasing box.

[0008] Preferably, the defoaming piece comprises a stirring rod and a blade, the stirring rod is located outside the ozone releasing box, and the blade is located in the ozone releasing box; and the lowermost stirring rod is in contact with the second filter screen.

[0009] Preferably, the stirring rod is horizontally arranged, a downward extending body is arranged at the end of the stirring rod away from the rotating rod, and spikes are arranged on the stirring rod and the extending body.

[0010] Preferably, the sewage outlet is provided with a water outlet pipeline, and the water outlet pipeline is provided with a third filter screen and a water control valve.

[0011] Preferably, the side of the treatment tank away from the ozone generator is provided with a sewage pretreater, the sewage pretreater is provided with a water inlet, and the sewage pretreater is communicated with the sewage inlet of the treatment tank through a liquid inlet pipe; and the liquid inlet pipe is provided with a liquid inlet valve and a water pump in sequence along the sewage conveying direction.

[0012] Preferably, the sewage pretreater is sequentially clamped with a first filter screen and an activated carbon plate along the sewage conveying direction.

[0013] Preferably, the sewage pretreater is provided with a support frame, and a bottom cover is detachably installed at the bottom of the sewage pretreater.

[0014] Preferably, the treatment tank is provided with an annular pipeline, the annular pipeline is located below the ozone releasing box, a plurality of through holes are uniformly distributed on the annular pipeline, and the annular pipeline is communicated with the air inlet pipe.

[0015] Preferably, the reflux pipe is provided with a reflux valve, and the air inlet pipe is provided with an air inlet valve.

[0016] The utility model discloses beneficial effects are as follows:

[0017] 1. The utility model discloses a second filter screen is arranged on the ozone releasing box, makes the bubble that the ozone enters sewage to be small, can leave from the ozone releasing box only, avoids the big bubble that the big bubble rises and fuses into, the stirring piece scatters the small bubble that forms, reduces the probability that the small bubble rises and forms the big bubble, the sewage and the bubble in the upper part of the treatment tank are drawn into the ozone releasing box through the reflux pipe, the blade at the tail end of the reflux pipe can rotate under the sewage impact and scatters the big bubble in the sewage, forms the small bubble, the small bubble that forms leaves the ozone releasing box through the second filter screen, effectively improves the sewage purification effect.

[0018] 2. The utility model discloses through the blade rotation in ozone release case, and the larger bubble in ozone release case is scattered and punctured, and ozone is released, improves ozone utilization rate and sewage disinfection effect.

[0019] 3. The utility model discloses through the stirring rod of rotation rod lowermost end and second filter screen contact, and the stirring rod rotation process is cleaned to second filter screen, avoids the second filter screen blockage because of the long time of handling sewage, and second filter screen can not use normally. DRAWINGS

[0020] Fig. 1 It is a kind of structural diagram for the ozone oxidation device for sewage treatment.

[0021] Fig. 2 It is a kind of sectional view for the ozone oxidation device for sewage treatment.

[0022] Fig. 3 It is a kind of structural diagram for the blade in the ozone oxidation device for sewage treatment.

[0023] In the drawing: 1-treatment tank, 2-sewage inlet, 3-sewage outlet, 4-gas inlet pipe, 5-ozone generator, 6-backflow pipe, 7-pump, 8-ozone release case, 9-rotating shaft, 10-blade, 11-second filter screen, 12-rotation rod, 13-motor, 14-stirring rod, 15-sewage pretreater, 16-water inlet, 17-liquid inlet pipe, 18-third filter screen, 19-backflow valve, 20-gas inlet valve, 21-liquid inlet valve, 22-water pump, 23-first filter screen, 24-activated carbon plate, 25-support frame, 26-blade, 27-water outlet pipeline. DETAILED DESCRIPTION

[0024] In order to facilitate the person skilled in the art to understand, the utility model is further explained below in conjunction with the drawings.

[0025] As Figs. 1-3 Shown, a kind of ozone oxidation device for sewage treatment, including treatment tank 1, the top end, bottom end of treatment tank 1 is equipped with sewage inlet 2, sewage outlet 3, is equipped with stirring piece in treatment tank 1. Treatment tank 1 inside lower end is equipped with ozone release case 8, ozone release case 8 is communicated with the upper portion of treatment tank 1 by backflow pipe 6, and the top of ozone release case 8 is communicated with the inside of treatment tank 1 by second filter screen 11, and ozone release case 8 is communicated with ozone generator 5 by gas inlet pipe 4. Pump 7 is installed on backflow pipe 6, and backflow pipe 6 can pump the liquid in the upper portion of treatment tank 1 into ozone release case 8. Rotating shaft 9 is rotatably arranged in the inside of the output end of backflow pipe 6, and rotating shaft 9 is equipped with blade 26.

[0026] Specifically, the ozone generator 5 delivers ozone to the ozone release chamber 8 through the air inlet pipe 4 to treat the wastewater. During the mixing process, the ozone generates small bubbles. A second filter 11 is installed to ensure that only small bubbles formed when ozone enters the wastewater can exit the ozone release chamber 8, thus disinfecting the wastewater in other spaces within the treatment tank 1. The agitator disperses the smaller bubbles exiting the ozone release chamber 8, forming even smaller bubbles and reducing the probability of them rising to form larger bubbles. Since some small bubbles will inevitably rise and merge to form larger bubbles, this invention uses a return pipe 6 to draw the wastewater and bubbles from the upper part of the treatment tank 1 into the ozone release chamber 8 together. The wastewater output from the return pipe 6 impacts the blades 26, causing them to rotate. The rotation of the blades 26 disperses the large bubbles in the wastewater, forming smaller bubbles. These smaller bubbles can then exit the ozone release chamber 8 through the second filter 11, and the agitator further disperses them, forming even smaller bubbles. This effectively improves the wastewater purification effect.

[0027] The agitator includes a vertically mounted rotating rod 12, which is rotatably mounted on the treatment tank 1. Several defoaming components are mounted on the rotating rod 12 and located inside the treatment tank 1. The top of the rotating rod 12 extends out of the treatment tank 1 and is connected to a motor 13. The lower end of the rotating rod 12 extends into the ozone release chamber 8, and the rotating rod 12 is rotatably connected to the ozone release chamber 8. The defoaming component includes a stirring rod 14 and blades 10. The stirring rod 14 is located outside the ozone release chamber 8, and the blades 10 are located inside the ozone release chamber 8. The bottom end of the lowest stirring rod 14 contacts the second filter screen 11. The stirring rod 14 is horizontally positioned, and the end of the stirring rod 14 away from the rotating rod 12 has a downward extension. Both the stirring rod 14 and the extension have spikes. The wastewater outlet 3 has an outlet pipe 27, which is equipped with a third filter screen 18 and a water control valve.

[0028] The motor 13 of this invention drives the rotating rod 12 to rotate, which in turn drives the stirring rod 14 and the blade 10 to rotate synchronously, ensuring thorough mixing of ozone and wastewater. The stirring rod 14 breaks up and punctures small bubbles leaving the ozone release chamber 8, while the blade 10 breaks up and punctures bubbles within the ozone release chamber 8, including larger bubbles formed by the ozone and wastewater entering from the air inlet pipe 4 and larger bubbles exiting from the return pipe 6, thus improving ozone utilization and wastewater disinfection efficiency. The stirring rod 14 at the bottom of the rotating rod 12 contacts the second filter screen 11, cleaning it during rotation to prevent impurities from accumulating on the screen and causing blockage, thus ensuring the second filter screen can function properly. The treated wastewater flows out from the outlet pipe 27 of the wastewater outlet 3, where a third filter screen 18 filters the wastewater to prevent impurities from flowing out. The stirring rod 14 and its downward extension provide a wider range of agitation for the wastewater. During rotation, the extension on the lowest part of the stirring rod 14 agitates the wastewater and ozone around the ozone release tank 8, resulting in good mixing. As the stirring rod 14 and its extension rotate, the spikes break up and pop any air bubbles.

[0029] A wastewater pre-processor 15 is located on the side of the treatment tank 1 furthest from the ozone generator 5. The wastewater pre-processor 15 has an inlet 16 and is connected to the wastewater inlet 2 on the treatment tank 1 via an inlet pipe 17. An inlet valve 21 and a water pump 22 are sequentially installed on the inlet pipe 17 along the wastewater transport direction. A first filter screen 23 and an activated carbon plate 24 are sequentially snapped into place inside the wastewater pre-processor 15 along the wastewater transport direction. A support frame 25 is provided on the wastewater pre-processor 15, and a bottom cover is detachably connected to its bottom. Both the wastewater pre-processor 15 and the bottom cover have holes with threads, allowing for detachable connection between the wastewater pre-processor 15 and the bottom cover using screws that match the threads. An annular pipe is located inside the treatment tank 1, below the ozone release box 8. Several through holes are evenly distributed on the annular pipe, which is connected to the air inlet pipe 4. A return valve 19 is installed on the return pipe 6, and an air inlet valve 20 is installed on the air inlet pipe 4.

[0030] Specifically, wastewater first enters the wastewater pre-processor 15 for treatment, passing sequentially through the first filter screen 23 and the activated carbon plate 24. The first filter screen 23 filters out larger impurities in the wastewater, while the activated carbon plate 24 adsorbs organic matter and other impurities. By turning the screw to remove it from the hole, the bottom cover can be removed, allowing the first filter screen 23 and activated carbon plate 24 to be taken off for cleaning or replacement. Larger impurities accumulated in the wastewater pre-processor 15 fall out, and a garbage truck can be placed under the wastewater pre-processor 15 to prevent the falling large impurities from soiling the ground. Ozone enters the treatment tank 1 through the through-hole in the annular pipe, and the ozone can be evenly distributed into the treatment tank 1.

[0031] Detailed operation process

[0032] First, wastewater enters the wastewater treatment tank 1 through inlet 16, passing sequentially through the first filter screen 23 and activated carbon plate 24 for pretreatment. The inlet valve 21 on the inlet pipe 17 is opened, and the water pump 22 is started, pumping wastewater from the wastewater pretreatment unit 15 into the treatment tank 1. The motor 13 is started, driving the rotating rod 12 to rotate, which in turn drives the stirring rod 14 and blades 10 to rotate, agitating the wastewater. Simultaneously, the ozone generator 5 is started, producing ozone. The air inlet valve 20 on the air inlet pipe 4 is opened, allowing ozone to enter the ozone release chamber 8. The blades 10 break up and puncture the bubbles formed by the ozone entering the wastewater, with smaller bubbles exiting the ozone release chamber 8 through the second filter screen 11. Under the rotation of the stirring rod 14, extension body, and blades 10, the ozone and wastewater are thoroughly mixed, and the spikes on the stirring rod 14 and extension body break up and puncture the small bubbles exiting the ozone release chamber 8. After disinfection for a period of time, large air bubbles accumulate at the top of the wastewater. The return valve 19 on the return pipe 6 is opened, and pump 7 is started. Pump 7 draws the wastewater containing large air bubbles from the top of the wastewater into the return pipe 6, from where it enters the ozone release chamber 8. Under the impact force of the wastewater output from the return pipe 6, the blades 26 rotate and break up some of the large air bubbles, while the blades 10 further break up and puncture the large air bubbles. During the rotation of the bottom stirring rod 14, the second filter screen 11 is cleaned to prevent clogging. After disinfection, the water control valve on the outlet pipe 27 is opened, and the wastewater flows out from the outlet pipe 27.

[0033] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. An ozone oxidation device for wastewater treatment, characterized in that, The treatment tank (1) is provided with a sewage inlet (2) and a sewage outlet (3) at its top and bottom, respectively, and a stirring component is provided inside the treatment tank (1). The treatment tank (1) is equipped with an ozone release box (8), which is located at the bottom of the treatment tank (1). The top of the ozone release box (8) is connected to the inside of the treatment tank (1) through a second filter screen (11). The ozone release box (8) is connected to an ozone generator (5) through an air inlet pipe (4). The ozone release box (8) is connected to the upper part of the treatment tank (1) through a return pipe (6). A pump (7) is installed on the return pipe (6). The return pipe (6) can draw the fluid from the upper part of the treatment tank (1) into the ozone release box (8). The output end of the return pipe (6) is equipped with a rotating shaft (9), and the rotating shaft (9) is equipped with blades (26).

2. The ozone oxidation device for wastewater treatment according to claim 1, characterized in that, The stirring component includes a vertically arranged rotating rod (12), which is rotatably mounted on the treatment tank (1). The rotating rod (12) is provided with several defoaming components, which are located inside the treatment tank (1). The top end of the rotating rod (12) extends out of the treatment tank (1) and is connected to a motor (13). The lower end of the rotating rod (12) extends into the ozone release box (8), and the rotating rod (12) is rotatably connected to the ozone release box (8).

3. The ozone oxidation device for wastewater treatment according to claim 2, characterized in that, The defoaming component includes a stirring rod (14) and a blade (10). The stirring rod (14) is located outside the ozone release chamber (8), and the blade (10) is located inside the ozone release chamber (8). The bottommost stirring rod (14) is in contact with the second filter screen (11).

4. An ozone oxidation device for wastewater treatment according to claim 3, characterized in that, The stirring rod (14) is horizontally arranged, and the end of the stirring rod (14) away from the rotating rod (12) is provided with a downward extension body. Both the stirring rod (14) and the extension body are provided with spikes.

5. An ozone oxidation device for wastewater treatment according to claim 1, characterized in that, The sewage outlet (3) is provided with a water outlet pipe (27), and the water outlet pipe (27) is provided with a third filter screen (18) and a water control valve.

6. An ozone oxidation device for wastewater treatment according to claim 1, characterized in that, The wastewater preprocessor (15) is provided on the side of the treatment tank (1) away from the ozone generator (5). The wastewater preprocessor (15) is provided with an inlet (16). The wastewater preprocessor (15) is connected to the wastewater inlet (2) on the treatment tank (1) through an inlet pipe (17). An inlet valve (21) and a water pump (22) are provided in sequence along the wastewater conveying direction on the inlet pipe (17).

7. An ozone oxidation device for wastewater treatment according to claim 6, characterized in that, The wastewater pretreatment unit (15) is equipped with a first filter screen (23) and an activated carbon plate (24) sequentially connected along the wastewater transport direction.

8. An ozone oxidation device for wastewater treatment according to claim 7, characterized in that, The wastewater pretreatment unit (15) is provided with a support frame (25), and a bottom cover is detachably installed on the bottom of the wastewater pretreatment unit (15).

9. An ozone oxidation device for wastewater treatment according to claim 1, characterized in that, The treatment tank (1) is equipped with an annular pipe located below the ozone release box (8). Several through holes are evenly distributed on the annular pipe, which is connected to the air inlet pipe (4).

10. An ozone oxidation device for wastewater treatment according to claim 1, characterized in that, The return pipe (6) is equipped with a return valve (19), and the air inlet pipe (4) is equipped with an air inlet valve (20).

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