Solid-liquid-gas three-phase contact reaction tower

Abstract

The utility model relates to the field of sewage treatment equipment, in particular to a solid-liquid-gas three-phase contact reaction tower. The utility model relates to a high-efficiency solid-liquid-gas three-phase contact reaction tower which comprises a tower body, a filler, a perforated aeration disc, a water collecting disc and the like are arranged in the tower body, the tower body is divided into an upper front end aeration area, a middle active carbon filler-ozone main reaction area and a lower water-ozone shower type contact area, and a water inlet pipe and an exhaust pipe are arranged at the top of the tower body. A water outlet pipe and a gas inlet pipe are arranged at the bottom of the tower body, water enters the tower body from the upper water inlet pipe and flows out from the bottom water outlet pipe, ozone enters the tower body from the bottom gas inlet pipe, one part of gas enters the bottom of the tower body again through a backflow pipeline, and the other part is exhausted out of the system through an exhaust valve or connected with a tail gas absorption device; a backflow air pipe, a water intake, a base, supporting legs and the like are arranged outside the tower body.

Description

Technical Field

[0001] The utility model relates to the field of sewage treatment equipment, in particular to a solid-liquid-gas three-phase contact reaction tower. Background Art

[0002] At present, ozone and activated carbon often use separate water treatment systems. Even if the ozone-activated carbon combined process is adopted, the contact path between ozone and wastewater is short and the utilization rate is very low. A part of the ozone tail gas is directly discharged out of the system, causing waste. The activated carbon easily reaches adsorption saturation and requires frequent regeneration, which further increases the energy consumption and treatment cost of the system.

[0003] The existing ozone-activated carbon combined process has problems such as large floor space and inconvenient maintenance and operation. At the same time, it adopts conventional civil engineering and cannot be used as a mobile water treatment equipment. Summary of the invention

[0004] The utility model hopes to provide a solid-liquid-gas three-phase contact reaction tower, and the specific scheme is as follows:

[0005] A solid-liquid-gas three-phase contact reaction tower comprises a base, on which a tower body is arranged, the tower body comprises an upper front aeration zone, a middle solid-liquid-gas three-phase main reaction zone and a lower water-ozone shower contact zone, a reflux air pipe is connected between the upper front aeration zone and the lower water-ozone shower contact zone, a check valve is arranged on the reflux air pipe, an exhaust valve is arranged on the reflux air pipe, a water inlet pipe is arranged on the upper front aeration zone, a valve is arranged on the water inlet pipe, an air inlet pipe and a water outlet pipe are arranged on the lower water-ozone shower contact zone, an aeration plate is arranged between the upper front aeration zone and the middle solid-liquid-gas three-phase main reaction zone, and an aeration plate is arranged between the middle solid-liquid-gas three-phase main reaction zone and the lower water-ozone shower contact zone.

[0006] The middle solid-liquid-gas three-phase main reaction zone is filled with fillers, and the middle solid-liquid-gas three-phase main reaction zone includes a filler loading and unloading port and an inspection port.

[0007] The upper front aeration zone includes a high water level line and a low water level line, and a high water level float valve pump stop device is correspondingly arranged at the high water level line, and a low water level float valve pump stop device is correspondingly arranged at the low water level line.

[0008] The upper front aeration zone includes a flap inspection port and a water intake port, and the middle solid-liquid-gas three-phase main reaction is provided with a water intake port.

[0009] A water baffle is arranged in the lower water-ozone shower contact area.

[0010] A water collecting tray is provided at the bottom of the lower water-ozone shower contact zone, and the water collecting tray is provided with a water outlet, a water outlet pipe is installed at the water outlet, and a filter screen is arranged at the water outlet.

[0011] The bottom of the base is provided with supporting feet.

[0012] The utility model discloses a high-efficiency solid-liquid-gas three-phase contact reaction tower, comprising a tower body, wherein fillers, aeration plates with holes and water collecting plates are arranged inside the tower body, and the tower body is divided into an upper front aeration zone, a middle activated carbon filler-ozone main reaction zone and a lower water-ozone shower contact zone. A water inlet pipe and an exhaust pipe are arranged on the top of the tower body, and a water outlet pipe and an air inlet pipe are arranged on the bottom of the tower body. Water enters the tower body from the upper water inlet pipe and flows out from the bottom water outlet pipe, and ozone enters the tower body from the bottom air inlet pipe. A part of the gas re-enters the bottom of the tower body through a reflux pipe, and the other part is discharged outside the system through an exhaust valve or connected to a tail gas absorption device; a reflux air pipe, a water intake, a base and supporting feet are arranged outside the tower body.

[0013] The utility model has the advantages of being able to integrate ozone technology and activated carbon (i.e. filler) system in one tower body, adopting underwater gas-upward convection contact, strengthening the solid-liquid-gas three-phase contact and reaction effect through three different contact areas arranged in the tower body, and being provided with an ozone reflux pipe, thereby greatly prolonging the residence time and reaction path of ozone, improving the transfer rate of ozone in water and the utilization rate of ozone, and delaying the regeneration cycle of activated carbon, improving the removal efficiency of pollutants (especially organic matter) in sewage and wastewater, reducing the floor space occupied by the coupling of two process systems and reducing the use cost, thereby realizing a modular and movable water treatment device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a high-efficiency solid-liquid-gas three-phase contact reaction tower of the utility model;

[0015] The numbers are as follows: 1. tower body; 2. aeration zone at the upper front end; 3. main solid-liquid-gas three-phase reaction zone in the middle; 4. water-ozone shower contact zone at the lower part; 5. water inlet pipe; 6. water outlet pipe; 7. air inlet pipe; 8. reflux air pipe; 9. exhaust valve; 10. aeration plate with holes; 11. water collecting plate; 12. filter screen; 13. filler; 14. base; 15. support foot; 16. valve; 17. water intake; 18. high water level float valve pump stop device; 19. low water level float valve pump start device; 20. check valve; 21. water baffle; 22. flap inspection port; 23. filler loading and unloading port and inspection port; 24. high water level line; 25. low water level line. DETAILED DESCRIPTION

[0016] Combine the following Figure 1 For further explanation:

[0017] A solid-liquid-gas three-phase contact reaction tower comprises a base 14, a tower body 1 is arranged on the base 14, the tower body 1 comprises an upper front aeration zone 2, a middle solid-liquid-gas three-phase main reaction zone 3 and a lower water-ozone shower contact zone 4, a reflux air pipe 8 is connected between the upper front aeration zone 2 and the lower water-ozone shower contact zone 4, a check valve 20 is arranged on the reflux air pipe 8, an exhaust valve 9 is arranged on the reflux air pipe 8, a water inlet pipe 5 is arranged on the upper front aeration zone 2, a valve 16 is arranged on the water inlet pipe 5, an air inlet pipe 7 and a water outlet pipe 6 are arranged on the lower water-ozone shower contact zone 3, an aeration plate 10 is arranged between the upper front aeration zone 2 and the middle solid-liquid-gas three-phase main reaction zone 3, and an aeration plate 10 is arranged between the middle solid-liquid-gas three-phase main reaction zone 3 and the lower water-ozone shower contact zone 4.

[0018] The middle solid-liquid-gas three-phase main reaction zone 3 is filled with fillers 13 , and the middle solid-liquid-gas three-phase main reaction zone 3 includes a filler loading and unloading port and an inspection port 23 .

[0019] The upper front aeration zone 2 includes a high water level line 24 and a low water level line 25, and a high water level float valve pump stop device 18 is correspondingly provided at the high water level line 24, and a low water level float valve pump stop device 19 is correspondingly provided at the low water level line 25 (the pump stop device is linked to the water inlet pump to control the start and stop of the water inlet pump).

[0020] The upper front aeration zone 2 includes a flap inspection port 22 and a water intake port 17 .

[0021] A water baffle 21 is provided in the lower water-ozone shower contact zone 4 .

[0022] A water collecting tray 11 is provided at the bottom of the lower water-ozone shower contact zone 4. The water collecting tray 11 is provided with a water outlet. A water outlet pipe 6 is installed at the water outlet. A filter screen 12 is provided at the water outlet.

[0023] A supporting foot 15 is provided at the bottom of the base 14 .

[0024] The utility model discloses a high-efficiency solid-liquid-gas three-phase contact reaction tower, comprising a tower body 1. The tower body 1 is provided with a filler 13, an aeration plate 10 and a water collecting plate 11 etc., and is divided into an upper front aeration zone 2, a middle activated carbon filler-ozone main reaction zone 3, and a lower water-ozone shower contact zone 4. A water inlet pipe 5 and an exhaust pipe 9 are provided on the top of the tower body 1, and a water outlet pipe 6 and an air inlet pipe 7 are provided on the bottom of the tower body 1. Water enters the tower body 1 from the upper water inlet pipe 7 and flows out from the bottom water outlet pipe 6. Ozone enters the tower body 1 from the bottom air inlet pipe 7. A part of the gas re-enters the bottom of the tower body 1 through a reflux pipe 8, and the other part is discharged outside the system through an exhaust valve 9 or connected to a tail gas absorption device. A reflux air pipe 8, a water intake 17, a base 14 and a supporting foot 15 etc. are provided on the outside of the tower body 1.

[0025] The utility model has the characteristics of being able to integrate ozone technology and activated carbon (i.e. filler 13) system in a tower body 1, adopting underwater gas-upward convection contact, strengthening the solid-liquid-gas three-phase contact and reaction effect through three different contact areas arranged in the tower body 1, and being provided with an ozone reflux air pipe 8, which greatly prolongs the residence time and reaction path of ozone, improves the transfer rate of ozone in water and the utilization rate of ozone, and delays the regeneration cycle of activated carbon, improves the removal efficiency of pollutants (especially organic matter) in sewage and wastewater, reduces the floor space occupied by the coupling of two process systems and reduces the use cost, thereby realizing a modular and movable water treatment device.

[0026] The wastewater to be treated is pressurized by a water pump and enters the tower body 1 through the water inlet pipe 5;

[0027] The wastewater to be treated first enters the upper front aeration zone 1. When the water level reaches the high water level line 24, the high water level float valve pump stop device 18 is activated, and the water inlet pump is closed through remote signal control; when the water level reaches the low water level line 25, the low water level float valve pump start device 19 is opened, and the water inlet pump is started through remote signal control;

[0028] A water intake port 17 is provided at the bottom of the upper front aeration zone 2, and a flap inspection port 22 is provided at the top for checking the liquid level and inspecting the float valve;

[0029] The wastewater enters the solid-liquid-gas three-phase main reaction zone 3 in the middle through the holes of the perforated aeration disk 10 from the upper front aeration zone 2. The main reaction zone is filled with filler 13. The filler can use activated carbon with a particle size larger than the aperture of the perforated aeration disk. It serves as the main reaction site of the tower body. The wastewater is fully in contact with the solid filler activated carbon and the gas ozone three-phase through a long path to remove pollutants in the water.

[0030] Two filler loading and unloading ports 23 are provided on the tower side of the middle solid-liquid-gas three-phase main reaction zone 3, the upper one is used as the filler loading port, and the lower one is used as the filler 13 unloading port, and also serves as an inspection port, so that the filler activated carbon can be taken out at any time for relevant testing; a water inlet is provided at the bottom of the middle solid-liquid-gas three-phase main reaction zone 3 (i.e., the solid-liquid-gas three-phase main reactor, which is the prior art and will not be described in detail);

[0031] The wastewater enters the lower water-ozone shower contact zone 4 from the solid-liquid-gas three-phase main reaction zone 3 in the middle through the holes of the perforated aeration plate 10. The wastewater in this zone undergoes a gas-water two-phase contact reaction with the highest concentration of ozone in a shower manner, further removing pollutants in the water, especially residual organic pollutants, to achieve water purification.

[0032] The wastewater flows from the lower water-ozone shower contact area 4 through the water collecting tray 11 with the filter screen 12 and enters the water outlet pipe 6. At this point, the water flow path of the wastewater is completed.

[0033] Ozone enters the tower body 1 through the air inlet pipe 7;

[0034] Ozone first enters the lower water-ozone shower contact zone 4. In this reaction zone, ozone will contact with the sewage falling from the holes of the top perforated aeration plate. Since the ozone concentration in this area is the highest, the water quality is further improved through air-water convection.

[0035] The lower water-ozone shower contact area 4 is provided with a water baffle 21 above the air pipe opening to prevent waste water from entering the air pipe;

[0036] Ozone enters the solid-liquid-gas three-phase main reaction zone 3 from the lower water-ozone shower contact zone 4 through the perforated aeration plate 10. In this zone, the wastewater flows from top to bottom, the activated carbon filler basically remains in the same position, and the ozone flows from bottom to top. The ozone, wastewater, and activated carbon filler fully contact and react to remove most of the pollutants. The ozone concentration in this zone is lower than that in the lower water-ozone shower contact zone 4;

[0037] Ozone enters the upper front aeration zone 2 from the middle solid-liquid-gas three-phase main reaction zone 3 through the perforated aeration plate 10. This zone is the pretreatment reaction site for wastewater, that is, ozone aeration pretreats pollutants in wastewater, improves the influent water quality of the middle solid-liquid-gas three-phase main reaction zone 3, and prolongs the adsorption saturation time of the activated carbon filler in the middle solid-liquid-gas three-phase main reaction zone 3. The ozone concentration in this zone is the lowest;

[0038] A small amount of unreacted ozone in the upper front aeration zone 2 flows back to the lower water-ozone shower contact zone 4 through the return air pipe 8 .

[0039] An exhaust valve 9 is provided at the top of the return air pipe 8, and the air pressure value can be set. When the air pressure value is reached, the exhaust is automatically exhausted, and the tail gas absorption device, such as KI solution, is connected to absorb the residual ozone tail gas to protect the atmospheric environment. A check valve is provided at the bottom to prevent the ozone in the lower water-ozone shower contact area 4 from flowing back into the upper front aeration area 2;

[0040] Connected to the lower part of the tower body 1 is a base 14 for supporting the tower body 1 , and below the base 14 are support legs 15 for supporting the entire reaction tower device.

[0041] The above description is not a limitation of the design of the utility model, and the design of the utility model is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the design of the utility model also fall within the protection scope of the design of the utility model.

Claims

1. A solid-liquid-gas three-phase contact reaction tower, characterized in that: The invention comprises a base, on which a tower body is arranged, and the tower body comprises an upper front aeration zone, a middle solid-liquid-gas three-phase main reaction zone and a lower water-ozone shower contact zone, a reflux air pipe is connected between the upper front aeration zone and the lower water-ozone shower contact zone, a check valve is arranged on the reflux air pipe, an exhaust valve is arranged on the reflux air pipe, a water inlet pipe is arranged on the upper front aeration zone, a valve is arranged on the water inlet pipe, an air inlet pipe and a water outlet pipe are arranged on the lower water-ozone shower contact zone, an aeration plate is arranged between the upper front aeration zone and the middle solid-liquid-gas three-phase main reaction zone, and an aeration plate is arranged between the middle solid-liquid-gas three-phase main reaction zone and the lower water-ozone shower contact zone.

2. A solid-liquid-gas three-phase contact reaction tower as claimed in claim 1, characterized in that: The middle solid-liquid-gas three-phase main reaction zone is filled with fillers, and the middle solid-liquid-gas three-phase main reaction zone includes a filler loading and unloading port and an inspection port.

3. A solid-liquid-gas three-phase contact reaction tower as claimed in claim 1, characterized in that: The upper front aeration zone includes a high water level line and a low water level line, and a high water level float valve pump stop device is correspondingly arranged at the high water level line, and a low water level float valve pump stop device is correspondingly arranged at the low water level line.

4. A solid-liquid-gas three-phase contact reaction tower as claimed in claim 1, characterized in that: The upper front aeration zone includes a flap inspection port and a water intake port, and the middle solid-liquid-gas three-phase main reaction is provided with a water intake port.

5. A solid-liquid-gas three-phase contact reaction tower as claimed in claim 1, characterized in that: A water baffle is arranged in the lower water-ozone shower contact area.

6. A solid-liquid-gas three-phase contact reaction tower as claimed in claim 1, characterized in that: A water collecting tray is provided at the bottom of the lower water-ozone shower contact zone, and the water collecting tray is provided with a water outlet, a water outlet pipe is installed at the water outlet, and a filter screen is arranged at the water outlet.

7. A solid-liquid-gas three-phase contact reaction tower as claimed in claim 1, characterized in that: The bottom of the base is provided with supporting feet.

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