Space-saving three-dimensional flocculation and sedimentation integrated tank for integrated equipment

Abstract

The utility model discloses a space-saving three-dimensional flocculation and sedimentation integrated tank for integrated equipment, which comprises a tank body, inclined plates, a reaction cylinder, a mixing cylinder and a water outlet, wherein the inclined plates are oppositely arranged on the left and right sides of the bottom of the tank body and are distributed in an inverted splayed shape; the upper part in the tank body is provided with a reaction cylinder; the mixing cylinder is provided with a water inlet pipe for realizing water inlet and a dosing pipe for realizing flocculant addition, stirring devices are arranged in the reaction cylinder and the mixing cylinder, and a clear water opening is formed in the upper end of the tank body. Sewage enters the mixing cylinder through the water inlet pipe, is quickly mixed with a flocculating agent, then flows into the reaction cylinder from the water outlet in the upper end of the mixing cylinder, reacts with the flocculating agent and flows into the tank body from the opening in the lower end of the reaction cylinder, and clear water after precipitation flows out from the clear water opening in the upper end of the tank body, so that flocculation precipitation is realized in one tank body; flocculation and sedimentation are integrated in one tank body, so that the occupied space of the dephosphorization section in the integrated equipment can be effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of water treatment technology, specifically relating to a three-dimensional flocculation sedimentation integrated tank for space-saving integrated equipment. Background Technology

[0002] In treating domestic sewage or livestock wastewater, flocculation agents are added to the wastewater before sedimentation in a settling tank to remove phosphorus and reduce turbidity. Specifically, a certain amount of flocculant is added to the wastewater and stirred. Rapid stirring ensures thorough mixing of the flocculant with the wastewater, while slow stirring allows flocs to grow and bridge with each other. The effluent then enters the settling tank and gradually settles. Because the flocculation tank requires stirring to ensure thorough mixing of the flocculant and wastewater, while the settling tank requires sedimentation, current technology separates the two tanks, resulting in a large footprint. Utility Model Content

[0003] This utility model proposes a three-dimensional flocculation and sedimentation integrated tank for space-saving integrated equipment, which can effectively reduce the footprint of the equipment while realizing the functions of the original flocculation tank and sedimentation tank.

[0004] Therefore, the technical solution adopted by this utility model is as follows: a three-dimensional flocculation sedimentation integrated tank for space-saving integrated equipment, comprising a tank body, with inclined plates arranged opposite each other on the bottom of the tank body in an inverted V-shape, a reaction cylinder arranged in the upper part of the tank body, an opening at the bottom of the reaction cylinder communicating with the tank body, a mixing cylinder arranged in the upper part of the reaction cylinder, an outlet at the upper end of the mixing cylinder communicating with the reaction cylinder, the mixing cylinder being equipped with an inlet pipe for water intake and a dosing pipe for flocculant addition, with the outlet of the inlet pipe located at the bottom of the mixing cylinder, and the outlet of the dosing pipe above the liquid surface in the mixing cylinder, a stirring device arranged in the reaction cylinder and the mixing cylinder, and a clear water outlet arranged at the upper end of the tank body.

[0005] As a preferred embodiment of the above scheme, the stirring device includes an air pipe disposed inside the mixing cylinder and a long stirring shaft extending through the mixing cylinder and into the reaction cylinder. The air pipe is provided with a number of air holes that can eject gas. The upper end of the long stirring shaft is provided with a motor for driving the long stirring shaft to rotate. Stirring blades are provided on the long stirring shaft located inside the reaction cylinder.

[0006] More preferably, the stirring device includes a first stirring shaft disposed in a mixing cylinder and a second stirring shaft disposed in a reaction cylinder. The bottom of the first stirring shaft is the input end of a reduction gearbox disposed at the bottom of the mixing cylinder, and the top of the second stirring shaft is the output end of the reduction gearbox at the bottom of the mixing cylinder. A drive motor for driving the first stirring shaft to rotate is disposed at the top of the first stirring shaft, and stirring blades are disposed on both the first stirring shaft and the second stirring shaft.

[0007] In a further preferred embodiment, triangular weirs are provided around the upper perimeter of the pool body, and a flow channel is left between the triangular weirs and the pool wall. A clear water inlet is provided at the upper end of the pool body, and the clear water inlet is connected to the flow channel.

[0008] Further preferably, a sludge discharge pipe is provided at the bottom of the pool.

[0009] The beneficial effects of this utility model are as follows: Wastewater enters the mixing drum through the inlet pipe, where it is rapidly mixed with the flocculant. Then, it flows from the outlet at the top of the mixing drum into the reaction drum, where it reacts with the flocculant. After reacting with the flocculant, the wastewater flows into the tank body through the opening at the bottom of the reaction drum. The settled clear water flows out from the clear water outlet at the top of the tank body, thus achieving flocculation and sedimentation within a single tank body. By integrating flocculation and sedimentation into one tank body, the space occupied by the phosphorus removal section in the integrated equipment can be effectively reduced. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the present utility model. Figure 1 .

[0011] Figure 2 This is a schematic diagram of the present utility model. Figure 2 .

[0012] Figure 3 This is a top view of the present invention (without a stirring device).

[0013] Attached reference numerals: Tank body-1, Inclined plate-2, Reaction cylinder-3, Mixing cylinder-4, Outlet-4a, Clear water outlet-5, Long stirring shaft-6, First stirring shaft-7, Second stirring shaft-8, Reduction gearbox-9, Stirring blades-10, Triangular weir-11, Sludge discharge pipe-12, Air pipe-13, Chemical dosing pipe-14. Detailed Implementation

[0014] The present invention will be further described below with reference to embodiments and accompanying drawings:

[0015] like Figures 1-3 As shown, a three-dimensional flocculation sedimentation integrated tank for space-saving integrated equipment has a main body that is rectangular. Inclined plates 2 are arranged opposite each other on the left and right sides of the bottom of the tank body 1 in an inverted V-shape. A clear water inlet 5 is provided at the upper end of the side wall of the tank body 1, so that the tank body can form a sedimentation tank with a conical bottom.

[0016] A reaction cylinder 3 is installed in the upper part of the tank body 1. An opening is provided at the bottom of the reaction cylinder 3 to connect with the tank body 1. A mixing cylinder 4 is installed in the upper part of the reaction cylinder 3. The mixing cylinder 4 is equipped with an inlet pipe for water intake and a dosing pipe 14 for flocculant addition. The outlet of the inlet pipe is located at the bottom of the mixing cylinder 4, and the outlet of the dosing pipe 14 is above the liquid surface in the mixing cylinder 4. An outlet 4a is provided at the upper end of the mixing cylinder 4 to connect with the reaction cylinder 3. A stirring device is provided in the reaction cylinder 3 and the mixing cylinder 4. The inlet pipe can be directly installed at the bottom of the mixing cylinder 4, or the inlet pipe can be inserted from the top surface of the mixing cylinder 4 and extended to the bottom.

[0017] Ideally, the stirring device in reaction cylinder 3 should be a slow stirring device, and the stirring device in mixing cylinder 4 should be a gas stirring device. If there is no gas stirring condition, then the stirring blades should be set to stir quickly, so that the mixing cylinder is a rapid mixing tank after the flocculant is added, and the reaction cylinder is a reaction tank for floc growth.

[0018] The entire reaction process is as follows: wastewater enters the bottom of the mixing drum through the inlet pipe, and the agent is added dropwise through the dosing pipe located above the liquid surface of the mixing drum. Under the action of the stirring device, the flocculant and wastewater are quickly mixed. When the mixed wastewater reaches the outlet, it flows into the reaction drum. Under the action of the stirring device in the reaction drum, the flocculation reaction is realized, the flocs grow, and then enter the tank through the opening at the bottom of the reaction drum for sedimentation. The clear water after sedimentation flows out from the clear water outlet at the top of the side wall of the tank.

[0019] To ensure the effectiveness of the flocculation reaction, it is necessary to control the residence time of wastewater in the reaction tank, mixing tank, and pool. Ideally, the residence time in the pool should be 3-4 hours, in the mixing tank 5-10 minutes, and in the reaction tank 0.5-1 hour.

[0020] To achieve different stirring speeds within the reaction vessel and mixing vessel, such as Figure 1 As shown, the stirring device includes an air pipe 13 disposed inside the mixing cylinder and a long stirring shaft 6 extending through the mixing cylinder and into the reaction cylinder. The air pipe 13 has several air holes for ejecting gas. A motor for driving the long stirring shaft 6 is disposed at the upper end of the long stirring shaft 6. Stirring blades are disposed on the long stirring shaft 6 located inside the reaction cylinder. Preferably, the air pipe extends along the wall of the mixing cylinder to the bottom, with a section located in the middle of the bottom. The air pipe is connected to the aeration fan pipeline of the integrated equipment via a conduit.

[0021] Of course, the stirring device can also adopt the following structure, such as Figure 2As shown, the stirring device includes a first stirring shaft 7 disposed in the mixing cylinder 4 and a second stirring shaft 8 disposed in the reaction cylinder 4. The bottom 7 of the first stirring shaft is the input end of the reduction gear box 9 disposed at the bottom of the mixing cylinder, and the top of the second stirring shaft 8 is the output end of the reduction gear box at the bottom of the mixing cylinder. A drive motor for driving the first stirring shaft to rotate is disposed at the top of the first stirring shaft 7, wherein the reduction gear box adopts a coaxial planetary gear reducer.

[0022] To further ensure water output, triangular weirs 11 are installed around the upper part of the pool 1, and a flow channel is left between the triangular weirs and the pool wall, with the clear water outlet 5 connected to the flow channel.

[0023] Ideally, a sludge discharge pipe 12 should be installed at the bottom of the pool 1.

Claims

1. A three-dimensional flocculation sedimentation integrated tank for space-saving integrated equipment, characterized in that: The utility model relates to a water purification device, including pool body (1), the bottom of pool body (1) is provided with and is inverted eight type distribution's inclined plate (2) to left and right opposition, the upper portion in pool body (1) is provided with reaction cylinder (3), the bottom end of reaction cylinder (3) is provided with the opening and communicates with pool body (1), the upper portion in reaction cylinder (3) is provided with mixing cylinder (4), the upper end of mixing cylinder (4) is provided with water outlet (4a) and communicates with reaction cylinder (3), mixing cylinder (4) is equipped with for realizing the water inlet pipe for realizing flocculant addition and dosing pipe (14) of water inlet, and the outlet of water inlet pipe is located in the bottom of mixing cylinder (4), the outlet of dosing pipe (14) is above the liquid level of mixing cylinder (4), reaction cylinder (3) and mixing cylinder (4) are provided with stirring device, the upper end of pool body (1) is provided with clear water outlet (5).

2. The integrated space-saving three-dimensional flocculation and sedimentation tank according to claim 1, characterized in that: The stirring device includes a gas pipe (13) disposed in the mixing cylinder and a long stirring shaft (6) extending through the mixing cylinder and into the reaction cylinder, the gas pipe (13) is provided with a plurality of gas holes capable of spraying gas, the upper end of the long stirring shaft (6) is provided with a motor for driving the long stirring shaft to rotate, and the long stirring shaft (6) in the reaction cylinder is provided with stirring blades.

3. The integrated space saving three-dimensional flocculation and sedimentation tank of claim 1, wherein: The stirring device includes a first stirring shaft (7) disposed in the mixing cylinder (4) and a second stirring shaft (8) disposed in the reaction cylinder (3), the bottom of the first stirring shaft (7) is provided with an input end of a speed reducer box (9) disposed at the bottom of the mixing cylinder, the top of the second stirring shaft (8) is provided with an output end of the speed reducer box at the bottom of the mixing cylinder, the top of the first stirring shaft (7) is provided with a drive motor for driving the first stirring shaft to rotate, and the first stirring shaft (7) and the second stirring shaft (8) are both provided with stirring blades.

4. The compact flocculation-sedimentation integrated tank for space saving of an integrated plant according to claim 1, characterized in that: The upper end of the pool body (1) is provided with a triangular weir (11) around, and a flow channel is left between the triangular weir and the pool wall, and the clear water outlet (5) communicates with the flow channel.

5. The compact flocculation sedimentation integrated tank for space saving of an integrated plant according to claim 1, characterized in that: The bottom of the pool body (1) is provided with a sludge discharge pipe (12).

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