A sedimentation tank for efficient and environmentally friendly sewage treatment

Abstract

The utility model belongs to the technical field of sewage treatment. A sedimentation tank for efficient and environmentally friendly sewage treatment comprises a first sedimentation tank and a second sedimentation tank. The first sedimentation tank comprises an inlet trough, a sedimentation tank and an outlet trough. A water inlet pipe is arranged on the side wall of the inlet trough, a first outlet pipe is arranged on the side wall of the outlet trough, and a second sedimentation tank is arranged at the end of the first outlet pipe. A detachable inclined plate is arranged in the sedimentation tank, a mud outlet funnel is arranged at the lower part of the sedimentation tank, the mud outlet funnel is connected with the mud outlet pipe, and valves are arranged on the mud outlet funnel and the mud outlet pipe. A first coagulant adding device is arranged in the inlet trough, a second coagulant adding device is arranged in the sedimentation tank at the lower part of the inclined plate, liquid outlet holes are opened on the first coagulant adding device and the second coagulant adding device, and the first coagulant adding device and the second coagulant adding device are connected with an external coagulant storage device. The secondary addition of coagulant can increase the coagulation degree of sludge and coagulant, thereby increasing the sewage treatment effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, in particular to a sedimentation tank for efficient and environmentally friendly sewage treatment. Background Art

[0002] Sedimentation tank is a kind of equipment that uses sedimentation to remove suspended matter in water and purify water quality. The working principle is to use the natural sedimentation or coagulation sedimentation of water to remove suspended matter in water. The sedimentation effect is determined by the flow rate of water in the sedimentation tank and the residence time of water in the tank. Sedimentation tank has a wide range of market demand and applications in the field of water treatment. Sedimentation tank technology is used in almost all water treatment projects.

[0003] In the patent application with the publication number of CN 216946366 U, a sewage flocculation sedimentation tank with sufficient flocculation is disclosed, which comprises a tank body, and the tank body comprises a sewage area, a sedimentation area and a clean water area which are arranged in sequence. The front end of the sewage area is provided with a water inlet, and the rear end of the clean water area is provided with a water outlet. The rear end of the sewage area is provided with a first outlet pipe, and the outlet end of the first outlet pipe is located in the front section of the sedimentation area; the rear section of the sedimentation area is provided with a second outlet pipe, and the outlet end of the second outlet pipe is located in the clean water area; a sedimentation pipe group which is composed of a group of multiple inclined pipes is also provided in the sedimentation area, and the sedimentation pipe group has a parallelepiped shape and fills the cross-sectional projection of the sedimentation area; a mounting frame for mounting the sedimentation pipe group is provided in the sedimentation area, and a group of dense inclined pipes are arranged in the sedimentation area, so that suspended impurities in the water are precipitated in the inclined pipes, water flows upward along the inclined pipes, and the separated mud residue slides down to the bottom of the tank along the inclined pipes under the action of gravity, and then is discharged in a centralized manner. This sedimentation tank can improve the sedimentation efficiency by 50-60%, and make the flocculation more sufficient in the same time.

[0004] However, in the above prior art, the coagulant is added all at once and cannot be fully mixed with the sewage. Therefore, in view of the above problems, the present application proposes a sedimentation tank for efficient and environmentally friendly sewage treatment. Utility Model Content

[0005] The utility model aims to provide a sedimentation tank for efficient and environmentally friendly sewage treatment. The secondary addition of coagulant can increase the coagulation degree of sludge and coagulant, thereby increasing the sewage treatment effect.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A high-efficiency and environmentally friendly sedimentation tank for sewage treatment, comprising a first sedimentation tank and a second sedimentation tank, wherein the first sedimentation tank comprises an inlet tank, a sedimentation tank and an outlet tank, a water inlet pipe is arranged on the side wall of the inlet tank, a first outlet pipe is arranged on the side wall of the outlet tank, and a second sedimentation tank is arranged at the end of the first outlet pipe;

[0008] A detachable inclined plate is arranged in the sedimentation tank, a mud discharge funnel is arranged at the lower part of the sedimentation tank, the mud discharge funnel is connected with the mud discharge pipe, and valves are arranged on the mud discharge funnel and the mud discharge pipe;

[0009] A first coagulant adding device is arranged in the water inlet tank, a second coagulant adding device is arranged in the sedimentation tank below the inclined plate, liquid outlet holes are opened on the first coagulant adding device and the second coagulant adding device, and the first coagulant adding device and the second coagulant adding device are connected to an external coagulant storage device.

[0010] Furthermore, four water inlet pipes are provided, each of which is provided with a valve, and each valve is controlled individually.

[0011] Furthermore, two first water outlet pipes are provided, and valves are provided on the two first water outlet pipes, and each valve is controlled individually.

[0012] Furthermore, the first coagulant adding device is provided with two coagulant adding pipes.

[0013] Furthermore, the second sedimentation tank includes an aeration section and a scraper section. A bubble releaser is arranged in the aeration section. A scraper is arranged on the top of the scraper section. A sludge recovery tank is arranged at the bottom of the scraper. The bubble releaser and the scraper are both powered by an external power supply. Both the bubble releaser and the scraper are purchased on the market. The bubble releaser is used to introduce bubbles into the aeration section; the scraper is used to scrape out the floating sludge.

[0014] Furthermore, the scraper conveyor is arranged at an inclination, and the sludge recovery tank is arranged at the bottom of the inclined upper end of the scraper conveyor, and the sludge recovery tank is arranged at an inclination.

[0015] Furthermore, the inner walls of the first sedimentation tank and the second sedimentation tank are coated with an anti-corrosion layer.

[0016] Compared with the prior art, the utility model has at least one of the following beneficial effects:

[0017] The utility model is provided with a first sedimentation tank and a second sedimentation tank, and a first coagulant adding device is arranged in the water inlet tank, and a second coagulant adding device is arranged in the sedimentation tank at the lower part of the inclined plate. In the sewage treatment process, the coagulant can be added twice to increase the contact between the sewage and the coagulant, thereby increasing the sewage treatment effect.

[0018] There are four water inlet pipes, each of which is provided with a valve, and each valve is controlled individually. There are two first water outlet pipes, each of which is provided with a valve, and each valve is controlled individually. During the sewage treatment process, the first water outlet pipes and the number of first water outlet pipes are opened according to the sewage treatment effect, thereby changing the speed of water inlet and outlet to increase the treatment effect.

[0019] The second sedimentation tank uses flotation to remove sludge. The sludge in the sewage is removed twice through the first sedimentation tank and the second sedimentation tank to increase the removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a top view of the first sedimentation tank in this utility model.

[0022] In the figure, 1-the first sedimentation tank; 2-the second sedimentation tank; 3-the sludge recovery tank; 4-the water inlet tank; 5-the sedimentation tank; 6-the water outlet tank; 7-the water inlet pipe; 8-the first water outlet pipe; 9-the inclined plate; 10-the mud outlet funnel; 11-the mud outlet pipe; 12-the first coagulant adding device; 13-the second coagulant adding device; 14-the aeration section; 15-the mud scraping section; 16-the bubble releaser; 17-the scraper. DETAILED DESCRIPTION

[0023] like Figure 1-2 In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model. Example

[0024] A high-efficiency and environmentally friendly sedimentation tank for sewage treatment, comprising a first sedimentation tank 1 and a second sedimentation tank 2, wherein the first sedimentation tank 1 comprises an inlet tank 4, a sedimentation tank 5 and an outlet tank 6, a water inlet pipe 7 is arranged on the side wall of the inlet tank 4, a first outlet pipe 8 is arranged on the side wall of the outlet tank 6, and the second sedimentation tank 2 is arranged at the end of the first outlet pipe 8;

[0025] A detachable inclined plate 9 is provided in the sedimentation tank 5, and a mud discharge funnel 10 is provided at the lower part of the sedimentation tank 5. The mud discharge funnel 10 is connected to a mud discharge pipe 11, and valves are provided on the mud discharge funnel 10 and the mud discharge pipe 11;

[0026] A first coagulant adding device 12 is provided in the water inlet tank 4, and a second coagulant adding device 13 is provided in the sedimentation tank 5 below the inclined plate 9. Liquid outlet holes are provided on the first coagulant adding device 12 and the second coagulant adding device 13, and the first coagulant adding device 12 and the second coagulant adding device 13 are connected to an external coagulant storage device. During the sewage treatment process, the coagulant can be added twice to increase the contact between the sewage and the coagulant, thereby increasing the sewage treatment effect.

[0027] More specifically, four water inlet pipes 7 are provided, each of which is provided with a valve, and each valve is controlled individually; two first water outlet pipes 8 are provided, each of which is provided with a valve, and each valve is controlled individually; during the sewage treatment process, the first water outlet pipes and the number of first water outlet pipes are opened according to the sewage treatment effect, thereby changing the speed of water inlet and water outlet to increase the treatment effect.

[0028] More specifically, the first coagulant adding device 12 is provided with two coagulant adding pipes.

[0029] More specifically, the second sedimentation tank 2 includes an aeration section 14 and a scraper section 15, a bubble releaser 16 is arranged in the aeration section 14, a scraper 17 is arranged on the top of the scraper section 15, a sludge recovery tank 18 is arranged at the bottom of the scraper 17, and the bubble releaser 16 and the scraper 17 are powered by an external power supply; the scraper 17 is arranged at an angle, and the sludge recovery tank 18 is arranged at the bottom of the inclined upper end of the scraper 17, and the sludge recovery tank 18 is arranged at an angle; the inner walls of the first sedimentation tank 1 and the second sedimentation tank 2 are coated with an anti-corrosion layer, and the sludge in the sewage is removed twice through the first sedimentation tank 1 and the second sedimentation tank 2, thereby increasing the removal effect.

[0030] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components and / or layout of the subject combination layout. In addition to the modifications and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A highly efficient and environmentally friendly sedimentation tank for sewage treatment, characterized by: The invention comprises a first sedimentation tank (1) and a second sedimentation tank (2), wherein the first sedimentation tank (1) comprises a water inlet trough (4), a sedimentation tank (5) and a water outlet trough (6), a water inlet pipe (7) is arranged on the side wall of the water inlet trough (4), a first water outlet pipe (8) is arranged on the side wall of the water outlet trough (6), and the second sedimentation tank (2) is arranged at the end of the first water outlet pipe (8); A detachable inclined plate (9) is arranged in the sedimentation tank (5), a mud discharge funnel (10) is arranged at the lower part of the sedimentation tank (5), the mud discharge funnel (10) is connected to a mud discharge pipe (11), and valves are arranged on the mud discharge funnel (10) and the mud discharge pipe (11); A first coagulant adding device (12) is arranged in the water inlet tank (4), and a second coagulant adding device (13) is arranged in the sedimentation tank (5) below the inclined plate (9). Liquid outlet holes are provided on the first coagulant adding device (12) and the second coagulant adding device (13), and the first coagulant adding device (12) and the second coagulant adding device (13) are connected to an external coagulant storage device.

2. The high-efficiency and environmentally friendly sewage treatment sedimentation tank according to claim 1 is characterized by: Four water inlet pipes (7) are provided, and valves are provided on the four water inlet pipes (7), and each valve is controlled individually.

3. The high-efficiency and environmentally friendly sewage treatment sedimentation tank according to claim 1 is characterized by: Two first water outlet pipes (8) are provided, and valves are provided on the two first water outlet pipes (8), and each valve is controlled individually.

4. The high-efficiency and environmentally friendly sewage treatment sedimentation tank according to claim 1 is characterized by: The first coagulant adding device (12) is provided with two coagulant adding pipes.

5. The high-efficiency and environmentally friendly sewage treatment sedimentation tank according to claim 1 is characterized by: The second sedimentation tank (2) comprises an aeration section (14) and a sludge scraping section (15). A bubble releaser (16) is arranged in the aeration section (14). A scraper (17) is arranged at the top of the sludge scraping section (15). A sludge recovery tank (3) is arranged at the bottom of the scraper (17). Both the bubble releaser (16) and the scraper (17) are powered by an external power supply.

6. The high-efficiency and environmentally friendly sewage treatment sedimentation tank according to claim 5 is characterized by: The scraper (17) is arranged at an inclination, and the sludge recovery tank (3) is arranged at the bottom of the inclined upper end of the scraper (17), and the sludge recovery tank (3) is arranged at an inclination.

7. The high-efficiency and environmentally friendly sewage treatment sedimentation tank according to claim 1 is characterized by: The inner walls of the first sedimentation tank (1) and the second sedimentation tank (2) are both coated with an anti-corrosion layer.

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