A wastewater treatment reaction tank

Abstract

The utility model relates to wastewater treatment equipment technical field, a wastewater treatment reaction tank, it is mainly used for improving wastewater treatment efficiency, solves the uneven mixing of liquid medicine and wastewater, the high stirring dead zone rate, the aeration pipeline is easy to block and so on in the prior art wastewater treatment technology. Through the innovative structure design and combination optimization, the organic integration of dosing, aeration and stirring function is realized, the wastewater treatment effect is improved significantly, and the operating cost is reduced. The reaction tank body adopts the round bottom cylinder design, the dosing aeration system is mixed with the pressure air and the liquid medicine after the blower, and the wastewater is evenly sprayed, the reaction efficiency is improved; the stirring system adopts the detachable multi-blade design, and the optimized guide plate is matched, the stirring dead zone rate is reduced, and the liquid medicine and wastewater are fully mixed; the guide plate and the number of stirring blades are consistent, avoid the dead angle and the vortex, further improve the treatment efficiency; without laying the aeration net pipe, reduce the maintenance cost, have wide application prospect.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater treatment equipment, specifically a wastewater treatment reaction tank. Background Technology

[0002] Wastewater treatment reaction tanks are an indispensable core piece of equipment in wastewater treatment systems, providing an important mixing and reaction site for wastewater and chemical agents.

[0003] Currently, existing wastewater treatment reaction tanks typically consist of a tank body, an agitator, and a transmission device. The chemical solution is added to the wastewater from the top of the reaction tank and mixed with it. This results in an unsatisfactory mixing effect between the chemical solution and the wastewater, insufficient reaction between the chemical solution and the wastewater, a large dead zone rate inside the reaction tank, and insufficient mixing efficiency. Especially when the wastewater volume is large, the chemical solution may not have fully contacted and reacted with the wastewater and may be discharged directly from the tank outlet along with the wastewater, seriously affecting the wastewater treatment effect and wasting the cost of chemical resources.

[0004] If oxidizing agents such as disinfectants are added during wastewater treatment, or if processes requiring aerobic microorganisms, such as activated sludge, biofilm, or oxidation ditch processes, it is usually necessary to lay aeration network pipes inside the reaction tank to increase the dissolved oxygen content in the wastewater through aeration, thereby improving the wastewater oxidation efficiency or ensuring the activity of aerobic microorganisms. However, the aerators installed on the aeration pipes are prone to clogging or wear under hydraulic action, requiring frequent replacement of the aerators, and making it inconvenient to clean the inside of the reaction tank. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a wastewater treatment reaction tank that can improve the mixing effect and stirring efficiency of the chemical solution and wastewater. It also eliminates the need to lay aeration network pipes inside the reaction tank and can increase the dissolved oxygen content in the wastewater to ensure the wastewater treatment effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A wastewater treatment reaction tank includes a tank body (1), a dosing and aeration system, and a stirring system.

[0008] The tank (1) is a cylindrical reaction tank with a round bottom. A circular triangular support (9), a manhole (4), and an exhaust pipe (7) are welded to the bottom. An inlet (10) is welded to the lower end of the side, and an outlet (17) is welded to the upper end of the other side. An installation plate (16) is welded to the top, and a guide plate (11) is welded to the inner wall of the cavity. The circular triangular support (9) columns at the bottom are distributed in an equilateral triangle. A gate valve switch is installed on the exhaust pipe (7) at the bottom.

[0009] The dosing aeration system includes a dosing aerator (3), a blower (12), a dosing pipe (5), and an aeration pipe (8); the dosing aerator (3) is fixed to the bottom of the inner cavity of the tank (1); the dosing pipe (5) and the aeration pipe (8) enter the dosing aerator (3) from the bottom of the tank (1); the blower (12) is mounted on the mounting plate (16), the aeration pipe (8) is connected to the blower (12) and fixed to the outer wall of the tank (1) by a clamp, and the other end of the dosing pipe (5) is connected to an external dosing pump.

[0010] The stirring system includes a motor (13), a reducer (14), a stirring shaft (15), and stirring blades (2); the motor (13) and the reducer (14) are fixed to the upper end of the mounting plate (16) by bolts, and the lower end is connected to the stirring shaft (15) by a coupling; the lower end of the stirring shaft (15) extends into two-thirds of the inner cavity of the tank (1); the stirring blades (2) are fixed to the end of the stirring shaft (15) by bolts.

[0011] Furthermore, the inner and outer sides of the tank (1) are coated with epoxy resin for corrosion protection.

[0012] Furthermore, the dosing aerator (3) consists of inner and outer cavities and inner and outer nozzles, with the inner cavity being the liquid medicine chamber (32) and the outer cavity being the air chamber (33).

[0013] Furthermore, both the drug delivery pipe (5) and the aeration pipe (8) enter the drug aerator (3) from the bottom.

[0014] Furthermore, both the drug delivery pipe (5) and the aeration pipe (8) are equipped with check valves (6).

[0015] Furthermore, the stirring blades (2) are equipped with detachable multi-blade stirring, with 2 to 6 blades.

[0016] Furthermore, the guide plate (11) is a triangular guide plate with a width of one-tenth of the inner diameter of the tank (1). It is made of two steel plates joined together with an angle of 30° to 60° between the plates. The number of plates is the same as the number of stirring blades (2).

[0017] Furthermore, the blower (12) is a snail-type annular blower.

[0018] Furthermore, the manhole (4) is a visual manhole.

[0019] This utility model provides a wastewater treatment reaction tank, which has the following advantages: when wastewater enters the reaction tank, the stirring system and the dosing and aeration system are turned on, and the dosing pump is turned on to inject the liquid medicine. The liquid medicine enters the dosing aerator (3) and mixes with the pressurized air. It is then evenly sprayed into the wastewater and fully contacts it. There is no need to lay aeration pipelines and install a large number of aerators. The generated bubbles can also provide sufficient dissolved oxygen for the reaction. Combined with the shearing action of the stirring blades (2) and the guide plate (11), the liquid medicine and wastewater are fully fused and reacted, which greatly reduces the dead zone rate of the stirring inside the tank (1), reduces the amount of medicine used, and improves the wastewater treatment efficiency. Overall, the operating cost of wastewater treatment is reduced, which brings significant economic benefits to enterprises. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a top view of the present invention.

[0022] Figure 3 This is a schematic longitudinal section of the aerator for adding chemicals according to this utility model.

[0023] Figure 4 This is a schematic cross-sectional view of the aerator for adding chemicals according to this utility model.

[0024] In the diagram: 1. Tank; 2. Agitator blades; 3. Dosing aerator; 31. Inner nozzle; 32. Liquid chamber; 33. Air chamber; 34. Outer nozzle; 4. Manhole; 5. Dosing pipe; 6. Check valve; 7. Drain pipe; 8. Aeration pipe; 9. Triangular support; 10. Inlet; 11. Baffle plate; 12. Blower; 13. Motor; 14. Reducer; 15. Agitator shaft; 16. Mounting plate; 17. Outlet. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1 As shown, a wastewater treatment reaction tank mainly consists of a tank body (1), a dosing and aeration system, and a stirring system.

[0027] Reference Figures 1 to 2The tank (1) is a cylindrical reactor with a round bottom. A circular triangular support (9), a manhole (4), and an exhaust pipe (7) are welded to the bottom. An inlet (10) is welded to the lower end of the side, and an outlet (17) is welded to the upper end of the other side. An installation plate (16) is welded to the top, and a guide plate (11) is welded to the inner wall of the cavity. The circular triangular support (9) columns at the bottom are distributed in an equilateral triangle. A gate valve is installed on the exhaust pipe (7) at the bottom. Wastewater enters the reactor through the inlet (10) at the lower end of the side, while the chemical solution and air enter the reactor from the bottom. After being fully mixed and reacted by the dosing aeration system and the stirring system, the wastewater is discharged through the outlet (17) at the upper end of the side.

[0028] Reference Figures 1 to 4 The dosing aeration system includes a dosing aerator (3), a blower (12), a dosing pipe (5), and an aeration pipe (8). The dosing aerator (3) is fixed to the bottom of the inner cavity of the tank (1). The dosing pipe (5) and the aeration pipe (8) enter the dosing aerator (3) from the bottom of the tank (1). The blower (12) is mounted on the mounting plate (16). The aeration pipe (8) is connected to the blower (12) and fixed to the outer wall of the tank (1) by clamps. The other end of the dosing pipe (5) is connected to an external dosing pump. The liquid enters the liquid chamber (32) and is sprayed out from the inner nozzle (31). It mixes with the pressurized air in the air chamber (33) and forms a gas-liquid mixture by jet shearing the air. The mixture is then sprayed out again from the outer nozzle and enters the inner cavity of the tank (1) to fully mix and react with the wastewater.

[0029] Reference Figures 1 to 2 The stirring system includes a motor (13), a reducer (14), a stirring shaft (15), and stirring blades (2); the motor (13) and the reducer (14) are fixed to the upper end of the mounting plate (16) by bolts, and the lower end is connected to the stirring shaft (15) by a coupling; the lower end of the stirring shaft (15) extends into two-thirds of the inner cavity of the tank (1); the stirring blades (2) are fixed to the end of the stirring shaft (15) by bolts.

[0030] The present invention provides a wastewater treatment reaction tank. When wastewater enters the reaction tank, the stirring system and the dosing and aeration system are turned on, and the dosing pump is turned on to inject the liquid medicine. The liquid medicine enters the dosing aerator (3) and is mixed with the pressurized air and sprayed into the wastewater to make full contact with it. There is no need to lay aeration pipelines and install a large number of aerators. The generated bubbles can also provide sufficient dissolved oxygen for the reaction. Combined with the shearing effect of the stirring blades (2) and the guide plate (11), the liquid medicine and wastewater are fully fused and reacted, which greatly reduces the dead zone rate of the stirring inside the tank (1), reduces the amount of medicine used, and improves the wastewater treatment efficiency. The overall operating cost of sewage treatment is reduced, which brings significant economic benefits to enterprises.

[0031] Furthermore, the inner and outer sides of the tank (1) are coated with epoxy resin for corrosion protection. This effectively prevents corrosion from wastewater and pharmaceutical solutions, improving the safety and durability of the tank (1).

[0032] Furthermore, the aerator (3) consists of inner and outer cavities and inner and outer nozzles. The inner cavity is the liquid medicine chamber (32), and the outer cavity is the air chamber (33). Necessary liquid medicine is injected during aeration to ensure uniform mixing with the wastewater, promoting oxidation and increasing dissolved oxygen content in the wastewater, thereby improving treatment efficiency and reducing reagent costs.

[0033] Furthermore, both the delivery pipe (5) and the aeration pipe (8) enter the dosing aerator (3) from the bottom. This avoids the aeration pipes entering the reaction tank and interfering with fluid movement, and also facilitates installation.

[0034] Furthermore, both the drug delivery pipe (5) and the aeration pipe (8) are equipped with check valves (6) to prevent backflow and water hammer.

[0035] Furthermore, the stirring blades (2) are equipped with detachable multi-blade agitators, with 2 to 6 blades. The number, shape, and angle of the blades can be adjusted according to specific needs to optimize the stirring effect, meet the needs of different processes, and are easy to disassemble and replace without removing the entire agitator.

[0036] Furthermore, the guide plate (11) is a triangular guide plate with a width of one-tenth of the inner diameter of the tank (1). It is made of two steel plates joined together, with the joining angle between the steel plates being 30° to 60°. The number of plates is the same as the number of stirring blades (2). The unique triangular structure of the triangular guide plate can more effectively disperse the flow of liquid, avoid dead corners and eddies, ensure the uniform distribution of the liquid in the tank (1), enhance the mixing between the liquid and wastewater, and improve reaction efficiency and quality.

[0037] Furthermore, the blower (12) adopts a snail-type annular blower. It has a large continuous air volume, low noise, convenient installation, and is energy-efficient.

[0038] Furthermore, the manhole (4) is a visual manhole. It allows direct observation of the inside of the tank (1), facilitating real-time monitoring of equipment status, timely detection and handling of problems, and improving work efficiency and safety.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wastewater treatment reaction tank, characterized in that, The wastewater treatment reaction tank includes a tank body (1), a dosing and aeration system, and a stirring system; The tank (1) is a cylindrical reaction tank with a round bottom. A circular triangular support (9), a manhole (4), and an exhaust pipe (7) are welded to the bottom. An inlet (10) is welded to the lower end of the side, and an outlet (17) is welded to the upper end of the other side. An installation plate (16) is welded to the top, and a guide plate (11) is welded to the inner wall of the cavity. The circular triangular support (9) columns at the bottom are distributed in an equilateral triangle. A gate valve switch is installed on the exhaust pipe (7) at the bottom. The dosing aeration system includes a dosing aerator (3), a blower (12), a delivery pipe (5), and an aeration pipe (8); the dosing aerator (3) is fixed to the bottom of the inner cavity of the tank (1); the delivery pipe (5) and the aeration pipe (8) enter the dosing aerator (3) from the bottom of the tank (1); the blower (12) is mounted on the mounting plate (16), the aeration pipe (8) is connected to the blower (12) and fixed to the outer wall of the tank (1) by a clamp, and the other end of the delivery pipe (5) is connected to an external dosing pump; The stirring system includes a motor (13), a reducer (14), a stirring shaft (15), and stirring blades (2); the motor (13) and the reducer (14) are fixed to the upper end of the mounting plate (16) by bolts, and the lower end is connected to the stirring shaft (15) by a coupling; the lower end of the stirring shaft (15) extends into two-thirds of the inner cavity of the tank (1); the stirring blades (2) are fixed to the end of the stirring shaft (15) by bolts.

2. The wastewater treatment reaction tank according to claim 1, characterized in that, The tank body (1) is coated with epoxy resin coating on both the inner and outer sides for corrosion protection.

3. The wastewater treatment reaction tank according to claim 1, characterized in that, The dosing aerator (3) consists of inner and outer cavities and inner and outer nozzles. The inner cavity is the liquid medicine chamber (32), and the outer cavity is the air chamber (33).

4. The wastewater treatment reaction tank according to claim 1, characterized in that, Both the drug delivery pipe (5) and the aeration pipe (8) enter the drug aerator (3) from the bottom.

5. A wastewater treatment reaction tank according to claim 1, characterized in that, Both the drug delivery pipe (5) and the aeration pipe (8) are equipped with check valves (6).

6. A wastewater treatment reaction tank according to claim 1, characterized in that, The stirring blades (2) are equipped with detachable multi-blade stirring, with 2 to 6 blades.

7. A wastewater treatment reaction tank according to claim 1, characterized in that, The guide plate (11) is a triangular guide plate with a width of one-tenth of the inner diameter of the tank (1). It is made of two steel plates joined together with an included angle of 30° to 60°. The number of plates is the same as the number of stirring blades (2).

8. A wastewater treatment reaction tank according to claim 1, characterized in that, The blower (12) is a snail-type annular blower.

9. A wastewater treatment reaction tank according to claim 1, characterized in that, The manhole (4) is a visual manhole.

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