Sewage treatment tank

Abstract

The utility model relates to the technical field of sewage treatment, and discloses a sewage treatment pond which comprises a pond body, a pre-storage pond, a primary sedimentation pond, a secondary sedimentation pond and a disinfection pond are sequentially arranged in the pond body and used for treating different sewage stages respectively, and fixing plates are fixedly connected to the upper portions of the inner walls of the two sides of the secondary sedimentation pond and the disinfection pond; stirring mechanisms are installed on the outer walls of the two fixing plates and comprise main stirring plates and auxiliary stirring rods which are rotationally connected to the outer walls of the bottoms of the fixing plates, gear motors are fixedly installed on the outer walls of the middle sections of the tops of the fixing plates, and main gears are fixedly connected to the outer walls, located below the fixing plates, of the main stirring plates; according to the sewage treatment device disclosed by the utility model, the stirring mechanisms are arranged in the secondary sedimentation tank and the disinfection tank, so that pollutants in sewage can be fully mixed with a treatment agent, and the treatment efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment, and in particular to a sewage treatment pool. Background Art

[0002] With the development of industry and the growth of population, the problem of water pollution is becoming increasingly serious. Sewage treatment has become one of the important tasks of environmental protection. At present, there are some problems with traditional sewage treatment pools;

[0003] On the one hand, existing sewage treatment tanks are relatively simple structures, typically just large pools, where sewage residence time is short, limiting treatment effectiveness. Furthermore, due to the lack of effective stirring and mixing devices, pollutants in the sewage cannot fully come into contact with the treatment chemicals, resulting in low treatment efficiency.

[0004] On the other hand, existing sewage treatment tanks present difficulties in sludge removal and cleaning. After prolonged use, a large amount of sludge accumulates at the bottom of the tank, requiring regular cleaning. However, traditional cleaning methods often require shutting down the sewage treatment tank for manual cleaning, which is not only time-consuming and labor-intensive, but also affects the continuity of sewage treatment. Therefore, a sewage treatment tank was proposed to address this issue. Utility Model Content

[0005] In order to solve the problem that the existing sewage treatment pool is usually just a large water pool, the sewage has a short residence time in it, the treatment effect is limited, and due to the lack of effective stirring and mixing devices, the pollutants in the sewage cannot fully contact with the treatment agents, resulting in low treatment efficiency, the present application provides a sewage treatment pool.

[0006] The sewage treatment pool provided in this application adopts the following technical solution:

[0007] A sewage treatment tank, comprising a tank body, wherein a pre-storage tank, a primary sedimentation tank, a secondary sedimentation tank, and a disinfection tank are sequentially arranged inside the tank body, each for treating different stages of sewage, wherein a fixing plate is fixedly connected to the upper sides of the inner walls of both sides of the secondary sedimentation tank and the disinfection tank, and a stirring mechanism is installed on the outer walls of the two fixing plates;

[0008] The stirring mechanism includes a main stirring plate and a secondary stirring rod rotatably connected to the outer wall of the bottom of the fixed plate, the main stirring plate is located between the two secondary stirring rods, a reduction motor is fixedly installed on the outer wall of the top middle section of the fixed plate, the output shaft end of the reduction motor passes through the fixed plate and is fixedly connected to the top of the main stirring plate, the outer wall of the main stirring plate located below the fixed plate is fixedly connected to a main gear, and the outer walls of the two secondary stirring rods located below the fixed plate are fixedly connected to secondary gears, and the two secondary gears are both meshed with the main gear;

[0009] A sewage discharge mechanism is installed on the bottom outer wall of the primary sedimentation tank and the secondary sedimentation tank, and the sewage discharge mechanism includes a sewage pipe and a dry sludge pump. The two sewage pipes are fixedly connected to the bottom outer wall of the primary sedimentation tank and the secondary sedimentation tank respectively, and one end of the two sewage pipes passes through and extends out of the tank body. The dry sludge pump is fixedly installed on one end of the two sewage pipes located outside the tank body. A plurality of adsorption ports are opened on the outer wall of the sewage pipe located inside the tank body, and a sewage discharge port is provided below one end of the sewage pipe located outside the tank body.

[0010] Preferably, the pre-storage tank, the primary sedimentation tank, the secondary sedimentation tank and the disinfection tank are separated by partitions, wherein a submersible sludge pump is installed on the bottom inner wall of the pre-storage tank, and a water supply pipe 1 is installed at the water delivery end of the submersible sludge pump, and the end of the water supply pipe 1 away from the submersible sludge pump passes through the partition and extends into the primary sedimentation tank.

[0011] Preferably, the partitions between the primary sedimentation tank, the secondary sedimentation tank and the disinfection tank are all fixedly connected with filter frames, a sewage pump is installed inside the filter frame, a water supply pipe 2 is installed at the water delivery end of the sewage pump, and the end of the water supply pipe 2 away from the sewage pump passes through the partition.

[0012] Preferably, an interception frame is installed on the inner wall of the pre-storage tank, a water inlet pipe is provided on the outer wall of one end of the tank body, the end of the water inlet pipe located inside the pre-storage tank is located in the interception frame, and a plurality of discharge pipes are provided on the outer wall of the tank body away from the water inlet pipe. The plurality of discharge pipes are connected to the disinfection tank, and a valve is installed inside the discharge pipe.

[0013] Preferably, two sets of feeding mechanisms are installed on the outer wall of the pool body, and the two sets of feeding mechanisms are used to add treatment agents to the secondary sedimentation tank and the disinfection tank respectively. The feeding mechanism includes two feeding pipes fixedly connected to the outer wall of one side of the pool body, and the inner walls of the two feeding pipes are rotatably connected to spiral feeding rods.

[0014] Preferably, a servo motor is fixedly installed on the top of the two feed pipes, the end of the output shaft of the servo motor passes through the feed pipe and is fixedly connected to the top of the spiral feed rod, a discharge port is provided on the outer wall of the feed pipe near the top, the two feed pipes are connected to the interior of the secondary sedimentation tank and the disinfection tank through the discharge port, and a feed hopper is provided on the outer wall of the feed pipe near the bottom.

[0015] In summary, this application has the following beneficial technical effects:

[0016] 1. By installing a stirring mechanism in the secondary sedimentation tank and disinfection tank, the pollutants in the sewage can be fully mixed with the treatment chemicals, thereby improving the treatment efficiency;

[0017] 2. By installing the pollution discharge mechanism in the bottom of the first and second sedimentation tanks, the accumulated sludge in the bottom of the tank can be conveniently discharged, ensuring the normal operation of the sewage treatment tank. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the overall schematic diagram of the application embodiment;

[0019] Figure 2 is the three-dimensional schematic diagram of the application embodiment;

[0020] Figure 3 is the first side sectional view of the application embodiment;

[0021] Figure 4 is the second side sectional view of the application embodiment;

[0022] Figure 5 is the third side sectional view of the application embodiment;

[0023] Figure 6 is Figure 5 is an enlarged schematic diagram of the structure at A in the application embodiment.

[0024] BRIEF DESCRIPTION OF DRAWINGS 1. tank body; 2. pre-storage tank; 3. first sedimentation tank; 4. second sedimentation tank; 5. disinfection tank; 6. fixed plate; 7. speed reducer motor; 8. main stirring plate; 9. auxiliary stirring rod; 10. main gear; 11. auxiliary gear; 12. pollution discharge pipe; 13. adsorption port; 14. pollution discharge port; 15. dry sludge pump; 16. submersible sludge pump; 17. water delivery pipe one; 18. filter frame; 19. sewage pump; 20. water delivery pipe two; 21. interception frame; 22. water inlet pipe; 23. discharge pipe; 24. material conveying pipe; 25. servo motor; 26. feeding hopper; 27. spiral material conveying rod; 28. discharge port. DETAILED DESCRIPTION

[0025] The following will be described in detail in combination with the accompanying Figures 1-6 The application will be further described in detail.

[0026] The application embodiment discloses a sewage treatment tank. Referring to Figures 1-6 A sewage treatment tank, comprising a tank body 1, the inside of the tank body 1 is sequentially provided with a pre-storage tank 2, a first sedimentation tank 3, a second sedimentation tank 4 and a disinfection tank 5, which are respectively used for treating different sewage stages, wherein the two side inner walls of the second sedimentation tank 4 and the disinfection tank 5 are fixedly connected with fixed plates 6, and the outer walls of the two fixed plates 6 are provided with stirring mechanisms;

[0027] The stirring mechanism includes a main stirring plate 8 and an auxiliary stirring rod 9 that are rotatably connected to the outer wall of the bottom of the fixed plate 6. The main stirring plate 8 is located between the two auxiliary stirring rods 9. A reduction motor 7 is fixedly installed on the outer wall of the top middle section of the fixed plate 6. The end of the output shaft of the reduction motor 7 passes through the fixed plate 6 and is fixedly connected to the top of the main stirring plate 8. The outer wall of the main stirring plate 8 located below the fixed plate 6 is fixedly connected to a main gear 10. The outer walls of the two auxiliary stirring rods 9 located below the fixed plate 6 are fixedly connected to auxiliary gears 11. Both auxiliary gears 11 are meshed with the main gear 10.

[0028] A sewage discharge mechanism is installed on the bottom outer wall of the primary sedimentation tank 3 and the secondary sedimentation tank 4. The sewage discharge mechanism includes a sewage pipe 12 and a dry sludge pump 15. The two sewage pipes 12 are fixedly connected to the bottom outer wall of the primary sedimentation tank 3 and the secondary sedimentation tank 4, respectively, and one end of the two sewage pipes 12 passes through and extends out of the tank body 1. The dry sludge pump 15 is fixedly installed on one end of the two sewage pipes 12 located outside the tank body 1. A plurality of adsorption ports 13 are opened on the outer wall of the sewage pipe 12 located inside the tank body 1, and a sewage outlet 14 is provided below the end of the sewage pipe 12 located outside the tank body 1.

[0029] The pre-storage tank 2, the primary sedimentation tank 3, the secondary sedimentation tank 4 and the disinfection tank 5 are separated by partitions, wherein a submersible sludge pump 16 is installed on the bottom inner wall of the pre-storage tank 2, and a water supply pipe 17 is installed at the water delivery end of the submersible sludge pump 16. The end of the water supply pipe 17 away from the submersible sludge pump 16 passes through the partition and extends into the primary sedimentation tank 3.

[0030] Reference Figure 3 and Figure 4 The partitions between the primary sedimentation tank 3, the secondary sedimentation tank 4 and the disinfection tank 5 are all fixedly connected with a filter frame 18. The filter frame 18 is located on the left side of multiple partitions. The filter frame 18 can intercept large particles of impurities in the sewage to prevent them from being sucked into the sewage pump 19. A sewage pump 19 is installed inside the filter frame 18. A water supply pipe 20 is installed at the water delivery end of the sewage pump 19. The end of the water supply pipe 20 away from the sewage pump 19 passes through the partition. Through the two water supply pipes 20, the sewage in the primary sedimentation tank 3 can be pumped to the secondary sedimentation tank 4, and the sewage in the secondary sedimentation tank 4 can be pumped to the disinfection tank 5.

[0031] An interception frame 21 is installed on the inner wall of the pre-storage pool 2, and a water inlet pipe 22 is provided on the outer wall of one end of the pool body 1. The end of the water inlet pipe 22 located inside the pre-storage pool 2 is located inside the interception frame 21, and a plurality of discharge pipes 23 are provided on the outer wall of the side of the pool body 1 away from the water inlet pipe 22. The plurality of discharge pipes 23 are connected to the disinfection pool 5, and a valve is installed inside the discharge pipe 23.

[0032] Two sets of feeding mechanisms are installed on the outer wall of the tank body 1, which are used to add treatment agents to the secondary sedimentation tank 4 and the disinfection tank 5 respectively. The feeding mechanism includes two feeding pipes 24 fixedly connected to the outer wall of one side of the tank body 1, and the inner walls of the two feeding pipes 24 are rotatably connected to the spiral feeding rod 27.

[0033] A servo motor 25 is fixedly installed at the top of the two feed pipes 24. The end of the output shaft of the servo motor 25 passes through the feed pipe 24 and is fixedly connected to the top of the spiral feed rod 27. A discharge port 28 is provided on the outer wall of the feed pipe 24 near the top. The two feed pipes 24 are connected to the interior of the secondary sedimentation tank 4 and the disinfection tank 5 through the discharge port 28. A feed hopper 26 is provided on the outer wall of the feed pipe 24 near the bottom.

[0034] The implementation principle of a sewage treatment tank in the embodiment of the present application is as follows: when in use, sewage first flows into the interception frame 21 through the water inlet pipe 22, and larger impurities in the sewage are filtered out. The interception frame 21 can be removed and cleaned regularly, and the sewage enters the first treatment area of ​​the tank body 1, that is, the pre-storage tank 2, where the sewage is pre-stored;

[0035] Then, the submersible sludge pump 16 is started, and the submersible sludge pump 16 quickly pumps the sewage into the primary sedimentation tank 3 through the water supply pipe 17 for treatment. After the sewage enters the primary sedimentation tank 3, it undergoes preliminary sedimentation to separate from the impurity sludge. The heavier impurity sludge sinks to the bottom of the primary sedimentation tank 3, located below the filter frame 18. At this time, the sewage pump 19 located in the primary sedimentation tank 3 is started. The sewage pump 19 pumps the sewage preliminarily precipitated and separated in the primary sedimentation tank 3 into the secondary sedimentation tank 4 through the water supply pipe 20. The sewage undergoes secondary treatment in the secondary sedimentation tank 4.

[0036] The secondary sedimentation tank 4 uses a PAC treatment process. A certain amount of PAC solid or liquid reagent is added to the feed pipe 24 through the feed hopper 26. The servo motor 25 is started, and the output shaft of the servo motor 25 drives the spiral feed rod 27 to rotate. The spiral feed rod 27 drives the reagent upward, and the reagent is fed into the secondary sedimentation tank 4 through the discharge port 28. PAC can be rapidly hydrolyzed in water to form polynuclear complexes such as aluminum hydroxide. It has a strong adsorption and agglomeration effect on pollutants such as suspended matter and colloidal particles in the water of the secondary sedimentation tank 4, and can quickly form larger flocs, thereby accelerating the sedimentation process.

[0037] After the sewage in the secondary sedimentation tank 4 is deposited, the sewage is pumped into the disinfection tank 5 through the cooperation of the sewage pump 19 and the water delivery pipe 20 for disinfection, and the disinfection agent is added into the material delivery pipe 24 through the feeding hopper 26, and the disinfection agent is delivered into the disinfection tank 5 through the cooperation of the servo motor 25 and the spiral material delivery rod 27, so that the sewage is disinfected, and the sewage is sequentially treated in different stages, and after the treatment is completed, the sewage is discharged by opening the valves in the plurality of discharge pipes 23.

[0038] When the disinfection agent needs to be added to the secondary sedimentation tank 4 and the disinfection tank 5 to treat the sewage, the stirring mechanism is started, two reduction motors 7 are started, the output shafts of the two reduction motors 7 drive the main gear 10 and the main stirring plate 8 to rotate, the main gear 10 drives the two auxiliary gears 11 engaged with the main gear 10 to rotate, the two auxiliary gears 11 drive the two auxiliary stirring rods 9 to rotate, and the auxiliary stirring rods 9 on both sides of the main stirring plate 8 rotate synchronously, so that the pollutants in the sewage and the treatment agent are fully mixed to improve the treatment efficiency.

[0039] Finally, after the sewage treatment is completed, sludge deposits are formed at the bottom of the primary sedimentation tank 3 and the secondary sedimentation tank 4, the dry sludge pump 15 is started through the sewage discharge mechanism, the dry sludge pump 15 generates negative pressure in the sewage discharge pipe 12, the sewage discharge pipe 12 sucks the sludge in the primary sedimentation tank 3 and the secondary sedimentation tank 4 through the plurality of suction ports 13, and discharges the sludge outside the tank body 1 through the sewage discharge port 14, so that the accumulated sludge is discharged regularly.

[0040] Finally, the following points should be noted: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0041] Secondly: the utility model discloses the embodiment in the drawing, only relate to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, in the case where there is no conflict, the same embodiment and different embodiments of the utility model can be combined with each other;

[0042] Finally: the above only for the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

[0043] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A sewage treatment tank, comprising a tank body (1), characterized in that: The interior of the tank body (1) is provided with a pre-storage tank (2), a primary sedimentation tank (3), a secondary sedimentation tank (4) and a disinfection tank (5) in sequence, which are respectively used to treat different stages of sewage, wherein a fixing plate (6) is fixedly connected to the upper part of the inner wall of both sides of the secondary sedimentation tank (4) and the disinfection tank (5), and a stirring mechanism is installed on the outer wall of the two fixing plates (6); The stirring mechanism comprises a main stirring plate (8) and a secondary stirring rod (9) which are rotatably connected to the outer wall of the bottom of the fixed plate (6); the main stirring plate (8) is located between the two secondary stirring rods (9); a reduction motor (7) is fixedly installed on the outer wall of the top middle section of the fixed plate (6); the output shaft end of the reduction motor (7) passes through the fixed plate (6) and is fixedly connected to the top of the main stirring plate (8); the outer wall of the main stirring plate (8) located below the fixed plate (6) is fixedly connected to a main gear (10); the outer walls of the two secondary stirring rods (9) located below the fixed plate (6) are fixedly connected to secondary gears (11); and the two secondary gears (11) are both meshed with the main gear (10); A sewage discharge mechanism is installed on the bottom outer wall of the primary sedimentation tank (3) and the secondary sedimentation tank (4), and the sewage discharge mechanism includes a sewage discharge pipe (12) and a dry sludge pump (15). The two sewage discharge pipes (12) are fixedly connected to the bottom outer wall of the primary sedimentation tank (3) and the secondary sedimentation tank (4), respectively, and one end of the two sewage discharge pipes (12) passes through and extends outside the tank body (1). The dry sludge pump (15) is fixedly installed on one end of the two sewage discharge pipes (12) located outside the tank body (1). A plurality of adsorption ports (13) are opened on the outer wall of the sewage discharge pipe (12) located inside the tank body (1), and a sewage discharge port (14) is provided below one end of the sewage discharge pipe (12) located outside the tank body (1).

2. A sewage treatment pool according to claim 1, characterized in that: The pre-storage tank (2), the primary sedimentation tank (3), the secondary sedimentation tank (4) and the disinfection tank (5) are separated by a partition, wherein a submersible sludge pump (16) is installed on the bottom inner wall of the pre-storage tank (2), and a water supply pipe (17) is installed at the water delivery end of the submersible sludge pump (16), and the end of the water supply pipe (17) away from the submersible sludge pump (16) passes through the partition and extends into the primary sedimentation tank (3).

3. A sewage treatment pool according to claim 2, characterized in that: The partitions between the primary sedimentation tank (3), the secondary sedimentation tank (4) and the disinfection tank (5) are all fixedly connected with a filter frame (18), a sewage pump (19) is installed inside the filter frame (18), a water supply pipe (20) is installed at the water delivery end of the sewage pump (19), and the end of the water supply pipe (20) away from the sewage pump (19) passes through the partition.

4. A sewage treatment pool according to claim 1, characterized in that: An interception frame (21) is installed on the inner wall of the pre-storage tank (2), and a water inlet pipe (22) is provided on the outer wall of one end of the tank body (1). One end of the water inlet pipe (22) located inside the pre-storage tank (2) is located inside the interception frame (21). A plurality of discharge pipes (23) are provided on the outer wall of the tank body (1) away from the water inlet pipe (22). The plurality of discharge pipes (23) are connected to the disinfection tank (5), and valves are installed inside the discharge pipes (23).

5. A sewage treatment pool according to claim 1, characterized in that: Two sets of feeding mechanisms are installed on the outer wall of the tank body (1), and the two sets of feeding mechanisms are used to add treatment agents to the secondary sedimentation tank (4) and the disinfection tank (5) respectively. The feeding mechanisms include two feeding pipes (24) fixedly connected to the outer wall of one side of the tank body (1), and the inner walls of the two feeding pipes (24) are rotatably connected to spiral feeding rods (27).

6. A sewage treatment pool according to claim 5, characterized in that: A servo motor (25) is fixedly installed at the top of the two feeding pipes (24), and the output shaft end of the servo motor (25) passes through the feeding pipe (24) and is fixedly connected to the top of the spiral feeding rod (27). A discharge port (28) is provided on the outer wall of the feeding pipe (24) near the top. The two feeding pipes (24) are connected to the inside of the secondary sedimentation tank (4) and the disinfection tank (5) through the discharge port (28). A feed hopper (26) is provided on the outer wall of the feeding pipe (24) near the bottom.

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