Catalytic ozonation equipment for wastewater treatment

Abstract

The utility model relates to the technical field of wastewater treatment, and discloses catalytic ozonation equipment for wastewater treatment, which comprises a reaction tank, a water inlet arranged below the outer wall of the reaction tank, a submersible pump arranged inside the reaction tank, and a partition plate attached to the inside of the reaction tank arranged above the submersible pump inside the reaction tank, a tank cover covers the reaction tank, the submersible pump comprises a pump outlet, the submersible pump can absorb waste water and pump the waste water into the hose from the pump outlet, and the waste water in the hose can be sprayed out from the spraying hole and collides with the bottom of the tank cover. And ozone is arranged above the partition plate and below the tank cover in the reaction tank. The waste water entering the reaction tank after being filtered is sucked through the submersible pump, the waste water is sprayed out from the spraying holes of the hose, so that the waste water can be in full contact with ozone above the partition plate, and more spraying holes can face the tank cover through the spirally coiled hose.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to an ozone catalytic oxidation device for wastewater treatment. Background Technology

[0002] Wastewater ozone oxidation equipment is an environmentally friendly device that utilizes the strong oxidizing properties of ozone to treat wastewater. It generates high-concentration ozone through an ozone generator and injects it into the wastewater reaction system, where the ozone reacts with pollutants to effectively degrade organic matter, decolorize, deodorize, and sterilize. This equipment is suitable for treating high-concentration organic wastewater from chemical, pharmaceutical, and dyeing industries. It features fast reaction speed, no secondary pollution, and small footprint. Furthermore, it can be combined with other processes (such as biological treatment) to improve treatment efficiency.

[0003] Existing ozone catalytic oxidation equipment for wastewater treatment often introduces ozone into the wastewater by aeration. However, the contact between the ozone sprayed from the gas pipe and a large amount of wastewater often results in low oxidation efficiency. At the same time, the oxidized wastewater and the continuously replenished wastewater are mixed together and difficult to distinguish, which can lead to them being discharged from the oxidation tower together. Utility Model Content

[0004] In order to overcome the problems of low oxidation efficiency of ozone catalytic oxidation equipment for wastewater treatment in existing technologies, and the fact that unoxidized wastewater is discharged along with the oxidation tower during discharge.

[0005] The technical solution of this utility model is as follows: an ozone catalytic oxidation device for wastewater treatment, including a reaction tank, an inlet for wastewater inlet located at the bottom of the outer wall of the reaction tank, a submersible pump placed inside the reaction tank, a partition plate corresponding to the submersible pump and fitted to the inside of the reaction tank located above the submersible pump inside the reaction tank, a flexible hose fixed on the partition plate, the flexible hose being spirally shaped at the top of the partition plate, a spray hole on the flexible hose facing away from the partition plate, the axis of the spray hole being perpendicular to the partition plate, a tank cover on the top of the reaction tank, the submersible pump including a pump outlet, the submersible pump being able to absorb wastewater and pump it into the flexible hose from the pump outlet, the wastewater in the flexible hose being able to spray out from the spray hole and impact the bottom of the tank cover, ozone being located inside the reaction tank above the partition plate and below the tank cover.

[0006] Preferably, the top of the tank lid is equipped with an ozone inlet pipe, and the ozone inlet pipe is also equipped with a one-way valve to prevent ozone from flowing out of the reaction tank.

[0007] Preferably, the top of the can lid is also provided with a catalyst addition port for adding catalyst powder, and the hose includes a water pipe outlet running through the axis.

[0008] Preferably, a fixing block is installed on the top of the partition, and a pressing port for fixing the hose is provided at the bottom of the fixing block. Fixing bolts are inserted at intervals on both sides of the pressing port on the top of the fixing block. The fixing bolts are engaged with the partition. A through-connector is provided on the partition. The pump outlet is connected to the lower side of the through-connector through pipe one, and the upper side of the through-connector is connected to one end of the hose through pipe two. A plug is inserted into the other end of the hose.

[0009] Preferably, an ozone reduction chamber is provided on the side of the reaction tank away from the water inlet. The reaction tank and the ozone reduction chamber are connected by a connecting pipe, which is equipped with an electrically controlled valve.

[0010] Preferably, an ultraviolet lamp is installed on the top of the inner side of the ozone reduction chamber, and a drain pipe is provided on the side of the ozone reduction chamber away from the connecting pipe.

[0011] Preferably, a float level detector is installed at the top of the corresponding partition inside the reaction vessel.

[0012] The beneficial effects of this utility model are as follows: Wastewater that has been filtered and drawn into the reaction tank is drawn in by a submersible pump and sprayed out from the nozzle of the hose. The wastewater is then impacted at the bottom of the tank cover and formed into water droplets, allowing it to fully contact the ozone above the baffle plate, thereby improving the oxidation efficiency of the wastewater. The spirally coiled hose allows more nozzles to face the tank cover, reducing the oxidation time of the wastewater. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the flexible hose structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the transfer pipe structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the fixing block structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the pump outlet position of this utility model.

[0018] Explanation of reference numerals in the attached diagram: 1. Reaction vessel; 10. Tank cover; 11. Water inlet; 12. Ozone inlet pipe; 121. One-way valve; 13. Catalyst addition port; 14. Connecting pipe; 2. Ozone reduction chamber; 21. Drain pipe; 221. Pressing port; 222. Fixing bolt; 31. Partition plate; 32. Flexible hose; 320. Water inlet; 3201. Plug; 321. Spray hole; 322. Fixing block; 323. Adapter pipe; 4. Float level detector; 5. Submersible pump; 51. Pump outlet. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please see Figure 1 - Figure 5 This utility model provides an embodiment: an ozone catalytic oxidation device for wastewater treatment, including a reaction tank 1. An inlet 11 for wastewater is located on the lower part of the outer wall of the reaction tank 1. A submersible pump 5 is placed inside the reaction tank 1. A partition 31, fitted to the interior of the reaction tank 1, is located above the submersible pump 5. A flexible hose 32 is fixed to the partition 31, spiraling at the top of the partition 31. The hose 32 has a spray hole 321 facing away from the partition 31, and its axis is perpendicular to the partition 31. A tank cover 10 is provided on the top of the reaction tank 1. The submersible pump 5 includes a pump outlet 51, which can absorb wastewater and pump it into the hose 32 from the pump outlet 51. The wastewater in the hose 32 can be sprayed out from the spray hole 321 and impact the bottom of the tank cover 10. Ozone is located inside the reaction tank 1 above the partition 31 and below the tank cover 10. Wastewater, after being filtered and drawn in by the submersible pump 5, enters the reaction tank 1. The wastewater is then sprayed out from the nozzle 321 of the hose 32, impacting the bottom of the tank cover 10 and forming droplets. This allows the wastewater to fully contact the ozone above the baffle 31, improving the oxidation efficiency of the wastewater. The spirally coiled hose 32 allows more nozzles 321 to face the tank cover 10, reducing the wastewater oxidation time. The top of the tank cover 10 is equipped with an ozone inlet pipe 12, which also has a one-way valve 121 to prevent ozone from flowing out of the reaction tank 1. The ozone inlet pipe 12 facilitates the entry of ozone into the reaction tank 1, reducing ozone overflow. At the same time, the one-way valve 121 prevents ozone backflow. The top of the tank cover 10 is also equipped with a catalyst addition port 13 for adding catalyst powder. The hose 32 includes a water pipe 320 that runs along the axis. The catalyst addition port 13 facilitates the addition of catalyst powder, improving the oxidation efficiency. The catalyst powder is existing technology.

[0021] Please see Figure 2 - Figure 5In this embodiment, a fixing block 322 is installed on the top of the partition 31, and a pressing port 221 for fixing the hose 32 is provided at the bottom of the fixing block 322. Fixing bolts 222 are inserted at intervals on both sides of the top of the fixing block 322 corresponding to the pressing port 221. The fixing bolts 222 are engaged with the partition 31. A through-connector pipe 323 is provided on the partition 31. The pump outlet 51 is connected to the lower side of the through-connector pipe 323 through a pipe one. The upper side of the through-connector pipe 323 is connected to one end of the hose 32 through a pipe two. A plug 3201 is inserted into the other end of the hose 32. Through the pipe one and the pipe two, the wastewater from the pump outlet 51 can smoothly enter the hose 32. The fixing block 322 can fix the hose 32, reducing the possibility of the spray hole 321 shifting. The rubber hose 32 can be coiled in a spiral shape, which can reduce the manufacturing cost compared to a metal pipe bent from metal. An ozone generator is provided on the side of the reaction tank 1 away from the inlet 11. The ozone reduction tank 2 is connected to the reaction tank 1 via a connecting pipe 14. An electrically controlled valve is installed on the connecting pipe 14. The ozone reduction tank 2 re-reduces unreduced ozone discharged from the connecting pipe 14, reducing direct ozone emissions. The electrically controlled valve can electrically control the discharge of liquid on the baffle 31. An ultraviolet lamp is installed on the top of the inner side of the ozone reduction tank 2. A drain pipe 21 is located on the side of the ozone reduction tank 2 away from the connecting pipe 14. The ultraviolet lamp irradiates the liquid discharged into the ozone reduction tank 2 through the connecting pipe 14, reducing the ozone entering the ozone reduction tank 2. A float level detector 4 is installed on the top of the baffle 31 inside the reaction tank 1. The float level detector 4 detects the liquid level above the baffle 31, ensuring sufficient ozone above the baffle 31 to oxidize the wastewater. When the liquid level above the baffle 31 is high, a control device is needed to stop the operation of the submersible pump 5. This control device is existing technology.

[0022] During operation, the wastewater filtered by the filter screen enters the bottom area of ​​the reaction tank 1 through the inlet 11. The submersible pump 5 draws in the wastewater and pumps it out from the pump outlet 51. The wastewater enters the transfer pipe 323 through pipe one, and then enters the hose 32 through pipe two. The hose 32 is flexible and cannot expand violently under pressure, nor can it contract when there is no internal pressure. The hose 32 is made of rubber. With the continuous supply of water at the pump outlet 51, the wastewater in the hose 32 is sprayed out from the nozzle 321. The bottom of the tank lid 10 is impacted, and the wastewater breaks into droplets upon impact. Ozone is supplied to the top of the partition 31 through the ozone inlet pipe 12, while catalyst powder is sprinkled from the catalyst addition port 13. The wastewater carrying the catalyst powder undergoes an oxidation reaction, while the ozone undergoes a reduction reaction. The oxidized wastewater falls onto the partition 31 and then flows into the ozone reduction chamber 2 through the connecting pipe 14. The ultraviolet lamp in the ozone reduction chamber 2 performs a secondary reduction on the ozone that enters along with it, reducing emissions to the outside. Finally, the oxidized wastewater flows out through the drain pipe 21.

[0023] Through the above steps, the submersible pump 5 draws in the filtered wastewater that enters the reaction tank 1 and sprays the wastewater from the nozzle 321 of the hose 32. The wastewater is impacted at the bottom of the tank cover 10 and forms water droplets, allowing it to fully contact the ozone above the baffle 31, thereby improving the oxidation efficiency of the wastewater. The spirally coiled hose 32 allows more nozzles 321 to face the tank cover 10, reducing the wastewater oxidation time. This solves the problem of low oxidation efficiency of ozone catalytic oxidation equipment for wastewater treatment in the prior art, and the problem that unoxidized wastewater is carried out with the oxidation tower during discharge.

Claims

1. An ozone catalytic oxidation device for wastewater treatment, characterized in that: The reaction vessel includes a reaction tank (1), with an inlet (11) for wastewater inlet located on the lower part of the outer wall of the reaction tank (1). A submersible pump (5) is placed inside the reaction tank (1). A partition (31) is located above the submersible pump (5) inside the reaction tank (1) and fits against the interior of the reaction tank (1). A flexible hose (32) is fixed on the partition (31). The flexible hose (32) is spiral-shaped at the top of the partition (31). The flexible hose (32) has a spray hole (321) facing away from the partition. On one side of the plate (31), the axis of the nozzle (321) is perpendicular to the partition (31). The top of the reaction tank (1) is covered with a tank cover (10). The submersible pump (5) includes a pump outlet (51). The submersible pump (5) can absorb wastewater and pump it from the pump outlet (51) into the hose (32). The wastewater in the hose (32) can be sprayed out from the nozzle (321) and impact the bottom of the tank cover (10). Ozone is provided in the reaction tank (1) above the partition (31) and below the tank cover (10).

2. The ozone catalytic oxidation equipment for wastewater treatment according to claim 1, characterized in that: The top of the tank cover (10) is provided with an ozone inlet pipe (12), and the ozone inlet pipe (12) is also provided with a one-way valve (121) to prevent ozone from flowing out of the reaction tank (1).

3. The ozone catalytic oxidation equipment for wastewater treatment according to claim 2, characterized in that: The top of the can lid (10) is also provided with a catalyst addition port (13) for adding catalyst powder, and the hose (32) includes a water inlet (320) that runs through the axis.

4. The ozone catalytic oxidation equipment for wastewater treatment according to claim 3, characterized in that: A fixing block (322) is installed on the top of the partition (31). The bottom of the fixing block (322) is provided with a pressing port (221) for fixing the hose (32). Fixing bolts (222) are inserted at intervals on both sides of the pressing port (221) on the top of the fixing block (322). The fixing bolts (222) are engaged with the partition (31). A through-connector (323) is provided on the partition (31). The pump outlet (51) is connected to the lower side of the through-connector (323) through a pipe. The upper side of the through-connector (323) is connected to one end of the hose (32) through a pipe. A plug (3201) is inserted into the other end of the hose (32).

5. The ozone catalytic oxidation equipment for wastewater treatment according to claim 4, characterized in that: An ozone reduction chamber (2) is provided on the side of the reaction tank (1) away from the water inlet (11). The reaction tank (1) and the ozone reduction chamber (2) are connected by a connecting pipe (14), and an electrically controlled valve is provided on the connecting pipe (14).

6. The ozone catalytic oxidation equipment for wastewater treatment according to claim 5, characterized in that: An ultraviolet lamp is installed on the top of the inside of the ozone reduction chamber (2), and a drain pipe (21) is provided on the side of the ozone reduction chamber (2) away from the connecting pipe (14).

7. The ozone catalytic oxidation equipment for wastewater treatment according to claim 6, characterized in that: A float level detector (4) is provided at the top of the partition (31) inside the reaction vessel (1).

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