Catalytic ozonation pond device for wastewater treatment

Abstract

The utility model relates to the technical field of wastewater treatment equipment, and particularly discloses a catalytic ozonation pond device for wastewater treatment, which comprises a wastewater treatment pond body provided with a cover plate at the top, an exhaust pipe is arranged on the cover plate, and the interior of the pond body is divided into at least two ozonation ponds which are connected in series for use. An ozone catalyst packing layer is arranged in the middle of each grid of ozone oxidation pond, the ozone oxidation pond comprises a water inlet end ozone oxidation pond connected with a water feeding pipe and a water outlet end ozone oxidation pond connected with a water discharging pipe, and a perforated branch pipe connected with the water feeding pipe is arranged at the bottom in the water inlet end ozone oxidation pond; a rectification part is arranged between every two adjacent ozone oxidation ponds, is communicated with the upper part of the front ozone oxidation pond and is communicated with the bottom of the rear ozone oxidation pond; the water discharging pipe is connected with the water feeding pipe through an ozone dissolved gas pipe which is also connected with an ozone generator. Ozone enters the ozone oxidation pond in the form of ozone-containing water, the ozone and the wastewater are mixed more uniformly, and the catalytic efficiency of an ozone catalyst is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment equipment, in particular to an ozone catalytic oxidation pool device for wastewater treatment. Background Art

[0002] Ozone has a strong oxidizing property. Ozone can decompose in water to produce free radicals such as atomic oxygen, which can remove pollutants in the water. In order to enhance the ozone treatment effect, a wastewater treatment method has been developed that can stimulate ozone to produce hydroxyl radicals. For example, an ozone catalyst containing metal elements is added to the wastewater. Hydroxyl radicals can quickly react with pollutants in the wastewater to remove the pollutants. It is often used for the removal of phenols and cyanide pollutants in wastewater and for decolorization and deodorization.

[0003] The ozone catalytic oxidation tank is a tank in which an ozone catalyst packing layer is set. When ozone passes through the ozone catalyst packing layer, ozone decomposes to produce hydroxyl radicals under the action of the ozone catalyst, and the hydroxyl radicals quickly decompose and remove pollutants in the wastewater. The existing ozone catalytic oxidation tank usually includes a tank body with multiple grids connected in series, and ozone is directly introduced from the bottom. The ozone catalyst packing layer is arranged in the middle of each grid tank body, such as the vertical flow multi-stage gradient ozone catalytic oxidation and filtration integrated tank disclosed in CN104628187A. After ozone is introduced into the water, it flows upward through the ozone catalyst packing layer. The unreacted ozone and the waste gas generated during the reaction are discharged from the top of the oxidation tank. When in use, ozone is directly introduced in the form of gas, and then mixed and dissolved with the wastewater after entering the water. The disadvantage of this ozone introduction method is that the mixing effect of ozone and wastewater is not good, which reduces the catalytic efficiency of the ozone catalyst. Utility Model Content

[0004] The utility model aims to solve the problem that the catalytic efficiency of the ozone catalyst is low due to the poor mixing effect of ozone directly with wastewater, and provides an ozone catalytic oxidation tank device for wastewater treatment which can improve the mixing effect of ozone with wastewater.

[0005] In order to solve the above technical problems, the utility model includes a wastewater treatment tank body, the top of the tank body is provided with a cover plate, the cover plate is provided with an exhaust pipe for discharging gas in the tank body, the interior of the tank body is divided into at least two ozone oxidation tanks used in series, the middle of each ozone oxidation tank is provided with an ozone catalyst packing layer, the ozone oxidation tank includes an ozone oxidation tank at the water inlet end connected to the water pipe and an ozone oxidation tank at the water outlet end connected to the drain pipe, and its structural characteristics are: the bottom of the ozone oxidation tank at the water inlet end is provided with a plurality of perforated branch pipes connected to the water pipe for uniform water distribution, and the perforated branch pipes are provided with a plurality of water outlet holes; a rectifier is provided between the two adjacent ozone oxidation tanks, the rectifier is communicated with the upper part of the front ozone oxidation tank, and the rectifier is communicated with the bottom of the rear ozone oxidation tank; the drain pipe is connected with an ozone dissolving pipe for introducing ozone-containing water into the water pipe, and the ozone dissolving pipe is connected to the ozone generator through an ozone delivery pipe.

[0006] After adopting the above structure, the wastewater to be treated enters the ozone oxidation tank at the water inlet end through the water pipe from the bottom. After the treated wastewater enters the drain pipe, part of the wastewater enters the ozone dissolving pipe. The ozone generated by the ozone generator enters the ozone dissolving pipe through the ozone delivery pipe. The ozone and the treated wastewater are mixed in the ozone dissolving pipe and then merged into the water pipe. After mixing with the wastewater to be treated, they enter the ozone oxidation tank at the water inlet end together. A plurality of perforated branch pipes are provided at the bottom of the ozone oxidation tank at the water inlet end. The wastewater containing ozone enters the tank through the outlet holes on the perforated branch pipes. The perforated branch pipes play a role in evenly distributing the wastewater when it enters. The flow process of wastewater after entering the ozone curing tank at the water inlet end is as follows: the wastewater flows upward through the ozone catalyst packing layer, and flows into the rectifying part from the upper part of the ozone oxidation tank at the water inlet end. The rectifying part is connected with the bottom of the ozone oxidation tank behind it, so the wastewater flows downward in the rectifying part. The wastewater in the rectifying part enters the ozone oxidation tank behind it from the bottom, and upflow occurs in the ozone oxidation tank. After passing through the ozone catalyst packing layer, it continues to flow backward until it is discharged through the ozone oxidation tank at the water outlet end; part of the unreacted ozone in the ozone-containing wastewater and the waste gas generated by the reaction are discharged through the exhaust pipe. When ozone passes through the ozone catalyst packing layer, hydroxyl radicals are generated under the catalytic action of the ozone catalyst. The hydroxyl radicals quickly react with the pollutants in the wastewater to decompose and remove them. Compared with the device of the utility model in which ozone is directly introduced into wastewater, the device of the utility model has the advantages that ozone and wastewater are mixed more evenly. The ozone generated by the ozone generator first enters the ozone dissolving pipe and is mixed with the treated wastewater to obtain ozone-containing water, and the ozone-containing water enters the water pipe. The ozone-containing water has similar properties to the wastewater to be treated. The ozone-containing water and the wastewater to be treated are easily mixed evenly during the flow process, and the ozone is easily diffused in the water to form more tiny bubbles, so that the ozone and wastewater are mixed more evenly and the mixing effect is better. The evenly mixed ozone-containing wastewater evenly enters the ozone oxidation tank at the water inlet end through the perforated branch pipe. Since the wastewater and ozone are evenly mixed, the ozone in the tiny bubbles is more easily catalyzed to generate hydroxyl radicals when flowing through the ozone catalyst packing layer, thereby improving the catalytic efficiency of the ozone catalyst, and further improving the wastewater ozone treatment effect.

[0007] The bottom of the ozone oxidation pool behind the water inlet end ozone oxidation pool is connected to the ozone dissolved air pipe through an ozone dissolved air branch pipe, and the ozone dissolved air branch pipe is connected to multiple perforated branch pipes for uniform water distribution arranged at the bottom of the ozone oxidation pool.

[0008] The ozone dissolving pipe is provided with a booster pump, the ozone dissolving pipe connected to the water outlet of the booster pump is provided with a jet mixer, and the ozone delivery pipe is connected to the air inlet of the jet mixer.

[0009] The water pipe, the ozone-dissolving air pipe, the ozone-dissolving air branch pipe and the ozone delivery pipe are all provided with check valves, and the ozone-dissolving air pipe, the ozone-dissolving air branch pipe and the ozone delivery pipe are all provided with regulating valves.

[0010] The ozone delivery pipe is provided with a flow meter and a pressure gauge.

[0011] A perforated plate for supporting the ozone catalyst packing layer is provided below the ozone catalyst packing layer, and a filter screen for preventing the ozone catalyst from leaking below is provided between the perforated plate and the ozone catalyst packing layer.

[0012] An overflow weir for uniform water discharge is arranged on the upper part of the ozone oxidation tank at the water outlet end, and a drainage trough of the overflow weir is connected to a drainage pipe.

[0013] The adjacent ozone oxidation tanks are connected at the top.

[0014] The wastewater treatment tank body of the utility model comprises more than two ozone oxidation tanks connected in series, and an ozone catalyst packing layer is arranged in each ozone oxidation tank. After the wastewater to be treated is mixed with the ozone-containing water in a pipeline, it enters the ozone oxidation tank at the water inlet end from the bottom, then flows through the ozone oxidation tank behind it in sequence, and finally is discharged through the ozone oxidation tank at the water outlet end. A rectifying part is arranged between adjacent ozone oxidation tanks, and the wastewater flows from bottom to top in the ozone oxidation tank, and the wastewater flows from top to bottom in the rectifying part. During the treatment process, the wastewater flows in a bend in the tank body, and the ozone-containing water is introduced into the bottom of the ozone oxidation tank behind the ozone oxidation tank at the water inlet end; when the ozone enters the ozone oxidation tank, it enters in the form of ozone-containing water, and the ozone and the wastewater are mixed more evenly, and the ozone can form tiny bubbles, and a perforated branch pipe for evenly distributing water is arranged at the bottom of the ozone oxidation tank, and the ozone is more easily catalyzed to generate hydroxyl free radicals when passing through the ozone catalyst packing layer, thereby improving the catalytic efficiency of the ozone catalyst and the treatment effect of the ozone on the wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of the device of the utility model;

[0016] Figure 2 It is a plan view of the device of the utility model, and the part below the cover plate is shown in the figure;

[0017] Figure 3 for Figure 1 AA cross-sectional diagram of ;

[0018] Figure 4 It is a schematic diagram of the connection between the ozone dissolving pipe and the ozone delivery pipe;

[0019] In the figure: 1. Ozone oxidation tank at the water inlet end; 2. Intermediate ozone oxidation tank; 21. Second water distribution main pipe; 22. Second perforated branch pipe; 221. Second water outlet hole; 3. Ozone oxidation tank at the water outlet end; 31. Third water distribution main pipe; 32. Third perforated branch pipe; 321. Third water outlet hole; 4. First rectifying part; 41. First connecting hole; 5. Second rectifying part; 51. Second connecting hole; 6. Cover plate; 7. Exhaust pipe; 8. Overflow weir; 9. Ozone catalyst packing layer; 91. Perforated plate; 92. Filter screen; 10. Inlet pipe; 11. Drain pipe; 12. Ozone dissolved gas pipe; 121. Booster pump; 123. First ozone dissolved gas branch pipe; 124. Second ozone dissolved gas branch pipe; 13. Ozone generator; 14. Ozone delivery pipe; 141. Flow meter; 142. Pressure gauge; 15. First water distribution main pipe; 16. First perforated branch pipe; 161. First water outlet hole; 17. Jet mixer; 171. Air inlet; 172. Nozzle; 173. Suction chamber; 174. Gradually contracting section; 175. Throat; 176. Gradually expanding section. DETAILED DESCRIPTION

[0020] Reference Figure 1-4 An ozone catalytic oxidation pool device for wastewater treatment comprises a wastewater treatment pool body, a cover plate 6 is arranged on the top of the pool body, that is, the pool body is a closed structure with a cover on the top, an exhaust pipe 7 for discharging gas in the pool body is arranged on the cover plate 6, the inside of the pool body is divided into at least two ozone oxidation pools, the ozone oxidation pools are used in series, and an ozone catalyst packing layer 9 for catalyzing ozone to produce hydroxyl free radicals is arranged in the middle of each ozone oxidation pool, the ozone catalyst packing layer 9 is formed by stacking ozone catalysts, and the ozone The catalyst is a finished particle, and its composition and structure are the existing technology. One end of the wastewater to be treated entering the tank body is the water inlet end ozone oxidation tank 1, and one end of the treated wastewater discharged from the tank body is the water outlet end ozone oxidation tank 3. The bottom of the water inlet end ozone oxidation tank 1 is connected to the water pipe 10, and the bottom of the water inlet end ozone oxidation tank 1 is provided with a plurality of first perforated branch pipes 16 for uniform water distribution. The first perforated branch pipe 16 is connected to the water pipe 10, and a plurality of first water outlet holes 161 are opened on the first perforated branch pipe 16; Figure 1As shown, a rectifying part is provided between two adjacent ozone oxidation pools, the rectifying part is connected with the upper part of the front ozone oxidation pool, and the rectifying part is connected with the bottom of the rear ozone oxidation pool. During the flow of wastewater from front to back, the wastewater in the front ozone oxidation pool flows into the rectifying part from the upper part, the wastewater flows downward in the rectifying part, and enters the rear ozone oxidation pool from the bottom. The rectifying part plays a role in changing the flow direction of the wastewater. The wastewater flows into the rear ozone oxidation pool evenly and stably through the rectifying part. The wastewater to be treated flows from front to back in the utility model device. The front and rear relationship between different treatment units in the utility model device is based on the flow direction of the wastewater; the ozone oxidation pool 3 at the outlet end is connected A drain pipe 11 is connected, and the treated wastewater is discharged from the drain pipe 11. The drain pipe 11 is connected to one end of the ozone dissolving pipe 12, and the other end of the ozone dissolving pipe 12 is connected to the water pipe 10. The ozone dissolving pipe 12 is connected to the ozone generator 13 through the ozone delivery pipe 14. The ozone generated by the ozone generator 13 enters the ozone dissolving pipe 12 through the ozone delivery pipe 14, and is mixed with the treated wastewater discharged from the drain pipe 11 to obtain ozone-containing water. The ozone-containing water enters the water pipe 10, and is mixed with the wastewater to be treated in the water pipe 10 to obtain ozone-containing wastewater. The ozone-containing wastewater enters the ozone oxidation tank 1 at the water inlet end from the bottom, and flows out through the first perforated branch pipe 16 and enters the tank. The cover plate 6 of the actual device is generally also provided with mounting holes, manholes and a corresponding cover body, which is not shown in the figure, and this belongs to the conventional setting in the field.

[0021] Reference Figure 1-3 The wastewater treatment tank body is divided into three ozone oxidation tanks, namely, an ozone oxidation tank 1 at the water inlet end, an intermediate ozone oxidation tank 2, and an ozone oxidation tank 3 at the water outlet end, by a partition wall. Depending on the quality of the wastewater, the intermediate ozone oxidation tank 2 may not be provided, or two or more intermediate ozone oxidation tanks 2 may be provided. A first rectifying part 4 is provided between the ozone oxidation tank 1 at the water inlet end and the intermediate ozone oxidation tank 2, and a second rectifying part 5 is provided between the intermediate ozone oxidation tank 2 and the ozone oxidation tank 3 at the water outlet end. The installation method of the ozone catalyst packing layer 9 in the three-grid ozone oxidation tank is as follows: a protrusion is provided on the inner wall and the partition wall of the outer ring wall of the tank body, and a perforated plate 91 is fixed on the protrusion. A support can be provided below the perforated plate 91, which is not shown in the figure. A filter screen 92 is provided on the perforated plate 91, and ozone catalyst particles are stacked on the top of the filter screen 92 to form an ozone catalyst packing layer 9. The filter screen 92 prevents the ozone catalyst particles from leaking below, and water flows through the pores of the perforated plate 91, the filter screen 92, and the ozone catalyst packing layer 9. The perforated plate 91 can be made of a stainless steel plate or an anti-corrosion steel plate resistant to wastewater and ozone corrosion, and the filter screen 92 can be made of a stainless steel mesh. The tops of adjacent ozone oxidation tanks are connected, such as Figure 1 As shown, a first connecting hole 41 is provided on the top of the partition wall between the first rectifying part 4 and the middle ozone oxidation pool 2, and a second connecting hole 51 is provided on the top of the partition wall between the second rectifying part 5 and the ozone oxidation pool 3 at the water outlet, so that the cavity above the water surface in the pool body is connected to facilitate gas discharge. Figure 1 As shown, an overflow weir 8 for uniform water discharge is provided at the upper part of the ozone oxidation tank 3 at the water outlet. The overflow weir 8 adopts a sawtooth weir. The drainage trough formed by the overflow weir 8 is connected to the drainage pipe 11. The overflow weir 8 is a conventional setting of water treatment equipment, and its structural principle is the existing technology and is not described in detail here.

[0022] Reference Figure 1-4 The bottom of the middle ozone oxidation pool 2 is connected to the ozone dissolved air pipe 12 via the first ozone dissolved air branch pipe 123, and the bottom of the ozone oxidation pool 3 at the outlet is connected to the ozone dissolved air pipe 12 via the second ozone dissolved air branch pipe 124. A plurality of second perforated branch pipes 22 for uniform water distribution are provided at the bottom of the middle ozone oxidation pool 2. The second perforated branch pipes 22 are connected to the first ozone dissolved air branch pipe 123, and a plurality of second water outlet holes 221 are provided on the second perforated branch pipes 22. A plurality of third perforated branch pipes 32 for uniform water distribution are provided at the bottom of the ozone oxidation pool 3 at the outlet. The third perforated branch pipes 32 are connected to the second ozone dissolved air branch pipe 124, and a plurality of third water outlet holes 321 are provided on the third perforated branch pipes 32. Specifically, Figure 3 As shown, one end of the first perforated branch pipe 16 in the ozone oxidation tank 1 at the water inlet end is connected to the first water distribution main pipe 15, and the first water distribution main pipe 15 is connected to the water supply pipe 10. A plurality of first perforated branch pipes 16 branch out from the first water distribution main pipe 15 and extend toward the edge of the tank body. Similarly, the second perforated branch pipe 22 in the middle ozone oxidation tank 2 is connected to the second water distribution main pipe 21, and the second water distribution main pipe 21 is connected to the first ozone dissolved gas branch pipe 123. The third perforated branch pipe 32 in the ozone oxidation tank 3 at the water outlet end is connected to the third water distribution main pipe 31, and the third water distribution main pipe 31 is connected to the second ozone dissolved gas branch pipe 124. The ends of the above-mentioned perforated branch pipes and water distribution main pipes are closed, which is a common practice in the field and will not be described in detail here. Of course, the water distribution pipe can also be designed in other forms, such as a ring-shaped perforated water distribution pipe, and the perforated water distribution pipe is provided with a joint connected to the ozone dissolved gas branch pipe. Figure 1 , 2 As shown in FIG. 4 , a booster pump 121 is provided on the ozone dissolving pipe 12, and a jet mixer 17 is provided on the ozone dissolving pipe 12 connected to the outlet of the booster pump 121. The principle of the jet mixer 17 is a Venturi jet tube, such as Figure 4 As shown, the jet mixer 17 includes a suction chamber 173, a side of the suction chamber 173 is provided with an air inlet 171, a nozzle 172 is provided in the suction chamber 173, the suction chamber 173 is connected in sequence with a tapered section 174, a throat section 175, and a gradually expanding section 176, the structural principle of the jet mixer 17 is the prior art, the air inlet 171 is connected to the ozone delivery pipe 14, and the treated wastewater is sprayed out through the nozzle 172 to absorb the ozone generated by the ozone generator 13, and the ozone and the treated wastewater are fully mixed in the jet mixer 17, and then enter the water pipe 10, the intermediate ozone oxidation tank 2, and the ozone oxidation tank 3 at the water outlet. Figure 1-4As shown, the water pipe 10, the ozone dissolved air pipe 12, the first ozone dissolved air branch pipe 123, the second ozone dissolved air branch pipe 124, and the ozone delivery pipe 14 are all provided with check valves to prevent water from flowing back, and the ozone dissolved air pipe 12, the first ozone dissolved air branch pipe 123, the second ozone dissolved air branch pipe 124, and the ozone delivery pipe 14 are all provided with regulating valves for regulating the flow of ozone-containing water entering each ozone oxidation tank; Figure 4 As shown, the ozone delivery pipe 14 is provided with a flow meter 141 and a pressure gauge 142 for detecting the ozone flow rate and pressure, and the flow rate of ozone mixed into the treated wastewater is controlled by a regulating valve on the ozone delivery pipe 14 .

[0023] Working process: treated wastewater is discharged from the drain pipe 11, part of the treated wastewater enters the ozone dissolving pipe 12, and after being pressurized by the booster pump 121, the ozone prepared by the ozone generator 13 is sucked in when passing through the jet mixer 17. The ozone is mixed with the treated wastewater to obtain ozone-containing water. Part of the ozone-containing water enters the water pipe 10 through the ozone dissolving pipe 12, and is mixed with the untreated wastewater in the water pipe 10 to obtain ozone-containing wastewater. The ozone-containing wastewater enters the ozone oxidation tank 1 at the water inlet end from the bottom, and enters the tank through the first perforated branch pipe 16; another part of the ozone-containing water enters the intermediate ozone oxidation tank 2 from the bottom through the first ozone dissolving branch pipe 123, and enters the tank through the second perforated branch pipe 22; the remaining ozone-containing water enters the ozone oxidation tank 3 at the water outlet end from the bottom through the second ozone dissolving branch pipe 124, and enters the tank through the third perforated branch pipe 32. After the ozone-containing wastewater enters the ozone oxidation tank 1 at the water inlet end, it flows upward, flows through the ozone catalyst packing layer 9 in the ozone oxidation tank 1 at the water inlet end, and then flows into the first rectifying part 4 from the top. After the wastewater enters the first rectifying part 4, it flows downward, enters the intermediate ozone oxidation tank 2 from the bottom, mixes with the ozone-containing water discharged from the second perforated branch pipe 22, and then flows upward, flows through the ozone catalyst packing layer 9 in the intermediate ozone oxidation tank 2, and then flows into the second rectifying part 5 from the top. After the flow direction is changed by the second rectifying part 5, it enters the ozone oxidation tank 3 at the water outlet end from the bottom, mixes with the ozone-containing water discharged from the third perforated branch pipe 32, and then flows upward. The wastewater flows through the ozone catalyst packing layer 9 in the ozone oxidation tank 3 at the outlet end, then overflows through the overflow weir 8 and enters the drain pipe 11. The wastewater flows in a baffled manner in the device of the utility model. When the wastewater passes through the ozone catalyst packing layer 9, hydroxyl radicals are generated under the catalytic action of the ozone catalyst. The hydroxyl radicals react quickly with the pollutants in the wastewater to remove them. Of course, in the absence of the catalytic action of the ozone catalyst, the oxidizing property of the ozone itself can also remove the pollutants in the wastewater, but the removal capacity is relatively low. The unreacted ozone in the device and the waste gas generated by the reaction are discharged through the exhaust pipe 7 on the cover plate 6 for post-treatment. The ozone of the utility model is not directly introduced into the wastewater in the form of ozone gas, but is first mixed with the treated wastewater to form ozone-containing water, and the ozone-containing water is then mixed with the wastewater. Compared with directly introducing ozone gas, the ozone-containing water and the wastewater are easier to mix evenly, and the ozone in the ozone-containing water is diffused in the water to form tiny bubbles after mixing with the wastewater. The tiny bubbles are more easily catalyzed by the ozone catalyst to generate hydroxyl free radicals, thereby improving the utilization rate of ozone and the catalytic efficiency of the ozone catalyst, thereby improving the ozone treatment effect of the wastewater; the ozone dissolving pipe 12, the first ozone dissolving branch pipe 123, the second ozone dissolving branch pipe 124, and the ozone delivery pipe 14 are all provided with regulating valves, and the ozone concentration in the ozone-containing water can be adjusted during the wastewater operation debugging, and the amount of ozone entering each ozone oxidation tank can also be adjusted, so that the amount of ozone introduced is adapted to the pollutant concentration in the wastewater in each ozone oxidation tank, and the problems of low ozone utilization rate and poor treatment effect caused by excessive or insufficient ozone are prevented.

[0024] The utility model discloses an ozone catalytic oxidation pool device for wastewater treatment. Ozone is mixed with wastewater in the form of ozone-containing water. The mixing effect of ozone and wastewater is good, and ozone bubbles are small, thereby improving the catalytic efficiency of ozone catalyst on ozone. Ozone-containing water is introduced into each ozone oxidation pool, so that the amount of ozone introduced is adapted to the concentration of wastewater pollutants in the pool, thereby improving the ozone treatment effect of wastewater.

Claims

1. An ozone catalytic oxidation pool device for wastewater treatment, comprising a wastewater treatment pool body, a cover plate (6) is provided on the top of the pool body, an exhaust pipe (7) for exhausting gas in the pool body is provided on the cover plate (6), the interior of the pool body is divided into at least two ozone oxidation pools used in series, an ozone catalyst packing layer (9) is provided in the middle of each ozone oxidation pool, the ozone oxidation pool comprises an ozone oxidation pool (1) at the water inlet end connected to a water pipe (10) and an ozone oxidation pool (3) at the water outlet end connected to a drain pipe (11), wherein: The bottom of the water inlet ozone oxidation pool (1) is provided with a plurality of perforated branch pipes connected to the water pipe (10) for uniform water distribution, and the perforated branch pipes are provided with a plurality of water outlet holes; a rectifying portion is provided between two adjacent ozone oxidation pools, the rectifying portion is communicated with the upper portion of the front ozone oxidation pool, and the rectifying portion is communicated with the bottom of the rear ozone oxidation pool; the drainage pipe (11) is connected with an ozone dissolving pipe (12) for introducing ozone-containing water into the water pipe (10), and the ozone dissolving pipe (12) is connected to an ozone generator (13) via an ozone delivery pipe (14).

2. The ozone catalytic oxidation pool device for wastewater treatment according to claim 1 is characterized in that: The bottom of the ozone oxidation pool behind the water inlet end ozone oxidation pool (1) is connected to the ozone dissolved air pipe (12) through an ozone dissolved air branch pipe, and the ozone dissolved air branch pipe is connected to a plurality of perforated branch pipes arranged at the bottom of the ozone oxidation pool for uniform water distribution.

3. The ozone catalytic oxidation pool device for wastewater treatment according to claim 2 is characterized in that: The ozone dissolving pipe (12) is provided with a booster pump (121), the ozone dissolving pipe (12) connected to the water outlet of the booster pump (121) is provided with a jet mixer (17), and the ozone delivery pipe (14) is connected to the air inlet (171) of the jet mixer (17).

4. The ozone catalytic oxidation pool device for wastewater treatment according to claim 3 is characterized in that: The water supply pipe (10), the ozone dissolving air pipe (12), the ozone dissolving air branch pipe, and the ozone delivery pipe (14) are all provided with check valves, and the ozone dissolving air pipe (12), the ozone dissolving air branch pipe, and the ozone delivery pipe (14) are all provided with regulating valves.

5. The ozone catalytic oxidation pool device for wastewater treatment according to claim 4 is characterized in that: The ozone delivery pipe (14) is provided with a flow meter (141) and a pressure gauge (142).

6. The ozone catalytic oxidation pool device for wastewater treatment according to claim 1 is characterized in that: A perforated plate (91) for supporting the ozone catalyst packing layer (9) is provided below the ozone catalyst packing layer (9), and a filter screen (92) for preventing the ozone catalyst from leaking below is provided between the perforated plate (91) and the ozone catalyst packing layer (9).

7. The ozone catalytic oxidation pool device for wastewater treatment according to claim 1 is characterized in that: An overflow weir (8) for evenly discharging water is provided at the upper portion of the ozone oxidation tank (3) at the water outlet, and a drainage trough of the overflow weir (8) is connected to a drainage pipe (11).

8. The ozone catalytic oxidation pool device for wastewater treatment according to claim 1 is characterized in that: The adjacent ozone oxidation tanks are connected at the top.

Images