Coagulative precipitation tank for wastewater treatment

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to a coagulative precipitation tank for wastewater treatment, which comprises a first precipitation tank and a second precipitation tank, first sawtooth notches are arranged at the tops of opposite surfaces of the first precipitation tank and the second precipitation tank, and outer sides of the opposite surfaces of the first precipitation tank and the second precipitation tank are integrally connected with an outer precipitation tank. Partition plates are fixedly mounted on the inner sides of the outer sedimentation tanks, overflowing channels are formed below the partition plates, guide rods are fixedly mounted in cavities, located on the outer sides of the partition plates, of the outer sedimentation tanks, floating plates are mounted on the guide rods in a sleeving manner, diversion trenches are connected between the opposite outer sedimentation tanks, and second sawtooth notches are formed in the tops of the connecting surfaces of the outer sedimentation tanks and the diversion trenches. Overflowed clear water is further stably settled through the outer settling pond, flocculated water sinks, the water enters the flow guide groove from the second sawtooth notch and is guided out, the flocculated water can be settled and separated to the maximum extent, overflow is carried out through the first sawtooth notch and the second sawtooth notch, blockage is avoided during overflow, and water passing is smooth.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a coagulation sedimentation tank for wastewater treatment. Background Art

[0002] The coagulation sedimentation tank used for wastewater treatment treats the wastewater, causing the flocs to sink and the clean water to overflow and be treated again. The current tank directly discharges the clean water after sedimentation by overflow. Since the mixing reaction is still stirred in the sedimentation tank, the precipitated flocs cannot settle completely and some of them will overflow with the water. Utility Model Content

[0003] The utility model aims to provide a coagulation sedimentation tank for wastewater treatment, so as to solve the problem in the background technology that the precipitated flocs cannot be completely settled and part of the flocs will overflow with water due to the stirring of the mixing reaction in the sedimentation tank.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A coagulation sedimentation tank for wastewater treatment comprises a first sedimentation tank and a second sedimentation tank, wherein the tops of the opposing surfaces of the first sedimentation tank and the second sedimentation tank are provided with a first serrated notch, the outer sides of the opposing surfaces of the first sedimentation tank and the second sedimentation tank are integrally connected to an outer sedimentation tank, a partition is fixedly installed on the inner side of the outer sedimentation tank, a flow passage is formed under the partition, a guide rod is fixedly installed in the outer cavity of the outer sedimentation tank located on the partition, a floating plate is sleeved on the guide rod, a guide trough is connected relative to the outer sedimentation tank, and a second serrated notch is provided on the top of the connecting surface of the outer sedimentation tank and the guide trough.

[0006] As a further description of the above technical solution:

[0007] The first sedimentation tank, the second sedimentation tank, the outer sedimentation tank and the guide trough have the same height.

[0008] As a further description of the above technical solution:

[0009] The first sedimentation tank, the second sedimentation tank and the outer sedimentation tank have the same length.

[0010] As a further description of the above technical solution:

[0011] The height of the flow passage is between -cm.

[0012] As a further description of the above technical solution:

[0013] The thickness of the floating plate is smaller than the opening height of the second sawtooth notch.

[0014] As a further description of the above technical solution:

[0015] The outer side of the floating plate is coated with anti-corrosion paint.

[0016] Compared with the prior art, the utility model provides a coagulation sedimentation tank for wastewater treatment, which has the following beneficial effects:

[0017] 1. In the utility model, an external sedimentation tank is arranged outside the first sedimentation tank and the second sedimentation tank, and the overflowed clean water is further steadily settled in the external sedimentation tank, the floccules in the water sink, and the water enters the guide groove from the second sawtooth notch and is guided out, so that the maximum sedimentation and separation of floccules can be achieved;

[0018] 2. In the utility model, the overflow is carried out by utilizing the first sawtooth notch and the second sawtooth notch, the overflow is not blocked, and the water flows smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model.

[0021] Legend:

[0022] 1. First sedimentation tank; 2. Second sedimentation tank; 3. First serrated notch; 4. External sedimentation tank; 5. Partition plate; 6. Guide rod; 7. Floating plate; 8. Guide trough; 9. Second serrated notch. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example:

[0025] See also Figure 1-Figure 2 The utility model provides a coagulation sedimentation tank for wastewater treatment, including a first sedimentation tank 1 and a second sedimentation tank 2. The tops of the opposite surfaces of the first sedimentation tank 1 and the second sedimentation tank 2 are provided with a first sawtooth notch 3. The outer sides of the opposite surfaces of the first sedimentation tank 1 and the second sedimentation tank 2 are integrally connected to an outer sedimentation tank 4. A partition plate 5 is fixedly installed on the inner side of the outer sedimentation tank 4, and a flow passage is formed below the partition plate 5. A guide rod 6 is fixedly installed in the outer cavity of the outer sedimentation tank 4 located at the outer side of the partition plate 5. A floating plate 7 is sleeved on the guide rod 6. A guide groove 8 is connected to the outer sedimentation tank 4, and a second sawtooth notch 9 is provided on the top of the connecting surface of the outer sedimentation tank 4 and the guide groove 8.

[0026] Specifically, the first sedimentation tank 1 , the second sedimentation tank 2 , the outer sedimentation tank 4 and the guide trough 8 have the same height, and the first sedimentation tank 1 , the second sedimentation tank 2 , and the outer sedimentation tank 4 have the same length.

[0027] Specifically, the height of the flow channel is between 5 and 15 centimeters, which is convenient for water to pass through and also leaves space for flocculants to settle.

[0028] Specifically, the thickness of the floating plate 7 is smaller than the opening height of the second sawtooth notch 9 , and the floating plate 7 will not block the overflow of the second sawtooth notch 9 from flowing down.

[0029] Specifically, the outer side of the floating plate 7 is coated with anti-corrosion paint to extend the service life.

[0030] Working principle:

[0031] The sewage is mixed, flocculated and settled in the first sedimentation tank 1 and the second sedimentation tank 2, and the separated clean water overflows from the first serrated notch 3 into the outer sedimentation tank 4. Part of the flocculated water flowing out with the clean water also enters the outer sedimentation tank 4. Due to the action of the partition 5, water will enter the position below the floating plate 7 from the flow channel. The floating plate 7 has a flow stabilizing effect. During this process, the flocculated water in the water settles steadily at the bottom of the outer sedimentation tank 4, and the clean water lifts the floating plate 7 and encounters the second serrated notch 9, overflows to the position of the guide groove 8 and is guided to flow out.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coagulation sedimentation tank for wastewater treatment, comprising a first sedimentation tank (1) and a second sedimentation tank (2), characterized in that: A first sawtooth notch (3) is provided at the top of the opposing surfaces of the first sedimentation tank (1) and the second sedimentation tank (2); the opposing surfaces of the first sedimentation tank (1) and the second sedimentation tank (2) are integrally connected to an outer sedimentation tank (4); a partition (5) is fixedly installed on the inner side of the outer sedimentation tank (4); a flow passage is formed below the partition (5); a guide rod (6) is fixedly installed in the outer cavity of the outer sedimentation tank (4) located on the outer side of the partition (5); a floating plate (7) is sleeved on the guide rod (6); a guide groove (8) is connected to the outer sedimentation tank (4); and a second sawtooth notch (9) is provided at the top of the connecting surface of the outer sedimentation tank (4) and the guide groove (8).

2. A coagulation sedimentation tank for wastewater treatment according to claim 1, characterized in that: The first sedimentation tank (1), the second sedimentation tank (2), the outer sedimentation tank (4) and the guide trough (8) have the same height.

3. A coagulation sedimentation tank for wastewater treatment according to claim 2, characterized in that: The first sedimentation tank (1), the second sedimentation tank (2), and the outer sedimentation tank (4) have the same length.

4. A coagulation sedimentation tank for wastewater treatment according to claim 1, characterized in that: The height of the flow passage is between 5 and 15 centimeters.

5. A coagulation sedimentation tank for wastewater treatment according to claim 1, characterized in that: The thickness of the floating plate (7) is smaller than the opening height of the second sawtooth notch (9).

6. A coagulation sedimentation tank for wastewater treatment according to claim 1, characterized in that: The outer side of the floating plate (7) is coated with anti-corrosion paint.

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