A device for thoroughly mixing wastewater treatment agents

Abstract

This invention provides a device for fully mixing wastewater treatment agents, including a mixing connection zone and a high-efficiency sedimentation tank connected to the mixing connection zone. A dosing pipe is installed in the mixing connection zone for adding agents to the high-efficiency sedimentation tank for mixing with wastewater. The mixing connection zone includes an inlet channel and an outlet channel connected to the high-efficiency sedimentation tank. A baffle reaction zone is provided between the inlet channel and the outlet channel. The baffle reaction zone includes several first baffles located on one side of the inlet channel and several second baffles located on the other side of the inlet channel. The first and second baffles are staggered to form a zigzag flow channel. Water flowing through the zigzag flow channel flows back and forth before entering the outlet channel. The staggered arrangement of the baffles forms an "S"-shaped flow channel, forcing the water flow to change direction multiple times, generating strong turbulence and vortices, significantly improving the contact frequency and mixing uniformity between the agent and the wastewater.

Description

Technical Field

[0001] This utility model relates to a device that can fully mix wastewater treatment agents. Background Technology

[0002] The dosing points for the old and new 3D high-efficiency sedimentation tanks in the water purification plant are currently located in the inlet channel after the bar screen, using a drip-feeding method. This method easily leads to uneven mixing of the inlet water and the chemical solution, affecting the treatment efficiency of the high-efficiency sedimentation tanks. Therefore, a research project on "a device that can fully mix wastewater treatment chemicals" is proposed. Based on the existing structural conditions and the treatment requirements of the primary treatment unit, this project aims to ensure thorough mixing of phosphorus removal chemicals with wastewater, optimize the effluent quality of the old and new 3D tanks, and explore a more efficient and cost-effective dosing method for the old and new 3D tanks. This research can reduce the pollutant load of the subsequent biological filter unit in the wastewater treatment plant, ensure the safe and stable operation of the biological filter unit, and also save on flushing energy consumption. Utility Model Content

[0003] This invention provides a device that can fully mix wastewater treatment agents, which can effectively solve the above-mentioned problems.

[0004] This utility model is implemented as follows:

[0005] An apparatus for thoroughly mixing wastewater treatment agents includes a mixing connection zone and a high-efficiency sedimentation tank connected to the mixing connection zone. A dosing pipe is installed within the mixing connection zone for adding agents to the high-efficiency sedimentation tank for mixing with wastewater. The mixing connection zone includes an inlet channel and an outlet channel connected to the high-efficiency sedimentation tank.

[0006] A baffle reaction zone is provided between the water inlet channel and the water outlet channel. The baffle reaction zone includes several first baffles provided on one side of the water inlet channel and several second baffles provided on the other side of the water inlet channel. The first baffles and the second baffles are arranged alternately to form a zigzag flow channel. The water flows back and forth through the zigzag flow channel and then enters the water outlet channel.

[0007] As a further improvement, the first folding plate and the second folding plate are all arranged in parallel. The first folding plate and the second folding plate are inclined towards the water outlet direction and form an angle A with the horizontal plane, wherein A = 70~90°.

[0008] As a further improvement, the width of the first folding plate and the second folding plate is both W1, the first folding plate and the second folding plate are set at equal distances, and the distance between adjacent first folding plates and second folding plates is W2, then W2 = 2~3W1.

[0009] As a further improvement, a water collection pit is provided between the water inlet channel and the water outlet channel.

[0010] As a further improvement, the dosing pipe is positioned between the water collection pit and the baffle reaction zone.

[0011] As a further improvement, the height of the first and second folding plates is H1, the height of the water inlet channel is H2, and the water level in the water inlet channel is H3, then H2 = H3 > H1.

[0012] As a further improvement, the first and second folding plates are connected to the sidewall of the water inlet channel by rebar.

[0013] As a further improvement, a rubber strip is provided at the connection between the first and second folding plates and the side wall of the water inlet channel.

[0014] The beneficial effects of this invention are as follows: A baffle reaction zone is provided between the inlet channel and the outlet channel. This baffle reaction zone includes several first baffles located on one side of the inlet channel and several second baffles located on the other side. The first and second baffles are staggered to form a zigzag flow channel. Water flowing through this zigzag flow channel enters the outlet channel after reciprocating left and right. The staggered arrangement of the baffles forms an "S"-shaped flow channel, forcing the water flow to change direction multiple times, generating strong turbulence and vortices, significantly increasing the contact frequency and mixing uniformity between the reagent and the wastewater. Uniform dispersion of the reagent avoids excessively high or low local concentrations, optimizes the flocculation reaction, and improves the phosphorus / suspended solids removal rate of the high-efficiency sedimentation tank. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the planar structure of a device that can fully mix wastewater treatment agents according to an embodiment of the present invention.

[0017] Figure 2 This is a cross-sectional structural diagram of a device that can fully mix wastewater treatment agents according to an embodiment of the present invention.

[0018] Figure 3 yes Figure 1 A magnified structural diagram of point A in the middle.

[0019] The attached diagram is labeled as follows:

[0020] 10. Mixing and connecting area; 11. Dosing pipe; 12. Inlet channel; 13. Baffle plate reaction zone; 131. First folding plate; 132. Second folding plate; 133. Rebar anchoring; 134. Rubber strip; 14. Sump; 15. Outlet channel;

[0021] 20. High-efficiency sedimentation tank. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] Reference Figure 1As shown, an apparatus for fully mixing wastewater treatment agents includes a mixing connection zone 10 and a high-efficiency sedimentation tank 20 connected to the mixing connection zone 10. A dosing pipe 11 is provided in the mixing connection zone 10 for adding agents to the high-efficiency sedimentation tank 20 to mix with wastewater. The mixing connection zone 10 includes an inlet channel 12 and an outlet channel 15 connected to the high-efficiency sedimentation tank 20. A baffle reaction zone 13 is provided between the inlet channel 12 and the outlet channel 15. The baffle reaction zone 13 includes a plurality of first baffles 131 provided on one side of the inlet channel 12 and a plurality of second baffles 132 provided on the other side of the inlet channel 12. The first baffles 131 and the second baffles 132 are staggered to form a zigzag flow channel. The water flows back and forth through the zigzag flow channel and then enters the outlet channel 15. The staggered arrangement of the first baffle plate 131 and the second baffle plate 132 forms an "S"-shaped flow channel, forcing the water flow to change direction multiple times, generating strong turbulence and eddies, significantly increasing the contact frequency and mixing uniformity between the reagent and the wastewater. Uniform dispersion of the reagent avoids excessively high or low local concentrations, optimizes the flocculation reaction, and improves the phosphorus / suspended solids removal rate of the high-efficiency sedimentation tank.

[0025] The first folding plate 131 and the second folding plate 132 are all arranged in parallel. The first folding plate 131 and the second folding plate 132 are inclined towards the outlet direction and form an angle A with the horizontal plane, where A = 70° to 90°. In this embodiment, A = 90°. The inclination of the first folding plate 131 and the second folding plate 132 towards the outlet direction can appropriately increase the flow rate of sewage and prevent sedimentation and blockage. If the angle A is less than 70°, the effect of strong turbulence and vortex generated by the deflection channel will decrease, and the phosphorus removal / suspended solids removal rate of the high-efficiency sedimentation tank will decrease. If the angle A is greater than 90°, it is easy to cause blockage.

[0026] Reference Figure 1 As shown, the width of the first folding plate 131 and the second folding plate 132 is W1. The first folding plate 131 and the second folding plate 132 are set at equal distances. The distance between adjacent first folding plates 131 and second folding plates 132 is W2. Then W2 = 2~3W1. The ratio of spacing to width (2~3 times) is the optimal range for turbulence generation. If it is too small, the drag will be too large. If it is too large, the vortex intensity will be weakened.

[0027] Reference Figures 1-2 As shown, a water collection pit 14 is provided between the inlet channel 12 and the outlet channel 15. The water collection pit buffers the water flow impact, allowing the reagent to initially diffuse before entering the baffle zone, avoiding excessively high local concentrations. The dosing pipe 11 is located between the water collection pit 14 and the baffle reaction zone 13. Prepositioning the dosing point allows full utilization of the strong turbulence in the baffle zone to complete the final mixing, improving reagent utilization.

[0028] Reference Figure 2 As shown, the height of the first folding plate 131 and the second folding plate 132 is H1, the height of the water inlet channel 12 is H2, and the water level in the water inlet channel 12 is H3. Therefore, H2 = H3 > H1, meaning the mixing connection area 10 is filled with water, the folding plate height is lower than the water level, ensuring the water flow is guided by the folding plates throughout the entire process. A safety margin is reserved in the channel height to prevent overflow. Figure 2 As shown, the current water level is significantly higher than the original water level, which increases the sewage treatment rate. If the original water level were raised to the same height as the inlet channel 12, the sewage would not be able to mix fully with the chemicals, thus reducing the sewage treatment rate. However, by adding a baffle reaction zone to the existing inlet channel 12, the sewage and chemicals can be fully mixed, which can raise the water level and further increase the sewage treatment rate.

[0029] Reference Figure 1 , Figure 3 As shown, the first folding plate 131 and the second folding plate 132 are connected to the side wall of the water inlet channel 12 by a reinforcing bar 133. The reinforcing bar provides a firm anchorage to resist the impact and vibration of the water flow; the rubber strip compensates for thermal expansion and contraction deformation and prevents cracking. A rubber strip 134 is provided at the connection between the first folding plate 131 and the second folding plate 132 and the side wall of the water inlet channel 12. The rubber strip seals the side wall joint, preventing the water flow from short-circuiting around the folding plate area and ensuring that all water flow participates in mixing.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An apparatus for fully mixing wastewater treatment agents, comprising a mixing connection zone (10) and a high-efficiency sedimentation tank (20) connected to the mixing connection zone (10), wherein a dosing pipe (11) is provided in the mixing connection zone (10) for adding agents to the high-efficiency sedimentation tank (20) for mixing with wastewater, the mixing connection zone (10) comprising an inlet channel (12) and an outlet channel (15) connected to the high-efficiency sedimentation tank (20), characterized in that, A baffle reaction zone (13) is provided between the water inlet channel (12) and the water outlet channel (15). The baffle reaction zone (13) includes a number of first baffles (131) provided on one side of the water inlet channel (12) and a number of second baffles (132) provided on the other side of the water inlet channel (12). The first baffles (131) and the second baffles (132) are arranged alternately to form a folding flow channel. The water flows back and forth through the folding flow channel and then enters the water outlet channel (15).

2. A device for thoroughly mixing a sewage treatment agent according to claim 1, wherein The first folding plate (131) and the second folding plate (132) are all arranged in parallel. The first folding plate (131) and the second folding plate (132) are inclined towards the water outlet direction and form an angle A with the horizontal plane, wherein A = 70~90°.

3. A device for thoroughly mixing a sewage treatment agent according to claim 2, wherein The width of the first folding plate (131) and the second folding plate (132) is W1. The first folding plate (131) and the second folding plate (132) are set at equal distances. The distance between adjacent first folding plates (131) and second folding plates (132) is W2. Then W2 = 2 ~ 3W1.

4. The apparatus for thoroughly mixing a sewage treatment agent according to claim 1, wherein A water collection pit (14) is provided between the water inlet channel (12) and the water outlet channel (15).

5. A device for thoroughly mixing a sewage treatment agent according to claim 4, wherein The dosing pipe (11) is located between the water collection pit (14) and the folded plate reaction zone (13).

6. The apparatus of claim 1, wherein the apparatus is configured to mix the wastewater treatment agent by rotating the mixing element at a speed of 1000 to 3000 rpm. The height of the first folding plate (131) and the second folding plate (132) is H1, the height of the water inlet channel (12) is H2, and the water level in the water inlet channel (12) is H3. Then H1 = H3 > H2.

7. The apparatus of claim 1, wherein the apparatus is characterized by: The first folding plate (131) and the second folding plate (132) are connected to the side wall of the water inlet channel (12) by rebar (133).

8. The apparatus of claim 1, wherein, A rubber strip (134) is provided at the connection between the first folding plate (131) and the second folding plate (132) and the side wall of the water inlet channel (12).

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