Fly ash washing wastewater treatment equipment based on fly ash water washing

Abstract

The utility model relates to liquid processing field, specifically speak to a kind of ash washing wastewater treatment equipment based on after fly ash washing, including wastewater pool and sedimentation tank, wastewater pool is provided with the treatment jar of transferring liquid between sedimentation tank, the drenching unit of adding reagent to inside is provided on the treatment jar, the inside of the treatment jar is provided with the stirring unit of mixing wastewater and reagent;The ash washing wastewater treatment equipment based on after fly ash washing of the utility model, the quantitative addition and efficient mixing of wastewater and reagent are realized by multistage treatment jar, and the matching degree of wastewater and reagent is more accurate, liquid circulation path is formed by spiral auger and isolation cylinder cooperation, mixed uniformity is significantly improved, circulating flow drives stirring vane passive rotation, disturbance is enhanced, effectively avoid local concentration too high or reaction uneven, improve the efficiency of precipitation and processing stability, guarantee the continuity and reliability of wastewater treatment effect.

Description

Technical Field

[0001] This utility model relates to the field of liquid treatment, specifically a wastewater treatment device for fly ash washing. Background Technology

[0002] The fly ash washing process generates a large amount of wastewater containing heavy metal ions and suspended solids. This type of wastewater is complex in composition and highly polluting; direct discharge without effective treatment will cause serious harm to water bodies and soil environments. Currently, chemical precipitation is a common method for treating this type of wastewater. Its core principle is to add appropriate reagents, such as sodium hydroxide or sodium sulfide, to the wastewater to remove heavy metals by forming insoluble precipitates. However, existing treatment equipment still has shortcomings in terms of reagent addition precision, mixing uniformity, and reaction efficiency. For example, traditional stirring methods struggle to achieve thorough mixing of wastewater and reagents, easily leading to excessively high local concentrations or incomplete reactions, affecting the precipitation effect. Simultaneously, low mixing efficiency prolongs the reaction time, reducing overall treatment efficiency. Therefore, overcoming these technical problems and deficiencies is a key issue that needs to be addressed. Utility Model Content

[0003] The purpose of this invention is to overcome the defects described in the background art, thereby realizing a wastewater treatment device based on fly ash washing. This device achieves quantitative addition and efficient mixing of wastewater and reagents through multi-stage treatment tanks, and ensures a more accurate ratio of wastewater to reagents. It adopts a spiral auger and isolation cylinder to form a liquid circulation path, which significantly improves the mixing uniformity. The circulation flow drives the stirring blades to rotate passively, enhances the disturbance, effectively avoids excessively high local concentrations or uneven reactions, improves sedimentation efficiency and treatment stability, and ensures the continuity and reliability of wastewater treatment effect.

[0004] To achieve the above-mentioned objectives, the technical solution of this utility model is: a wastewater treatment device based on fly ash washing wastewater, comprising a wastewater tank and a sedimentation tank, wherein a treatment tank for transferring liquid is provided between the wastewater tank and the sedimentation tank, a dosing unit for adding reagents to the treatment tank is provided on the treatment tank, and a stirring unit for mixing wastewater and reagents is provided inside the treatment tank.

[0005] In the above-mentioned wastewater treatment equipment based on fly ash washing, a top plate is horizontally fixed at the top of the wastewater tank, and a stirring paddle is vertically rotatably mounted on the top plate, with the end of the stirring paddle vertically inserted into the interior of the wastewater tank.

[0006] The top of the top plate is fixedly equipped with a first motor that drives the stirring paddle.

[0007] In the above-mentioned wastewater treatment equipment based on fly ash washing, multiple treatment tanks are provided. A support is fixedly installed at the bottom of each treatment tank, and an inlet is opened on the upper part of the treatment tank facing the wastewater pool. An inlet pipe is connected to the inlet.

[0008] The end of the inlet pipe extends into the bottom of the wastewater tank, and a liquid pump is connected to the end of the inlet pipe.

[0009] In the above-mentioned wastewater treatment equipment based on fly ash washing, the lower part of the treatment tank is a bucket-shaped structure, and a drain outlet is provided at the bottom of the treatment tank, with a drain pipe connected to the drain outlet.

[0010] The end of the drain pipe is fixedly installed on the sedimentation tank, and a solenoid valve is fixedly installed on the drain pipe.

[0011] In the above-mentioned wastewater treatment equipment based on fly ash washing, the dosing unit includes a dosing inlet on the top side of the treatment tank, a storage tank fixedly installed on the side of the treatment tank, a dosing pipe connected to the top of the storage tank, the end of the dosing pipe being connected to the dosing inlet, and a metering pump installed on the dosing pipe.

[0012] A liquid level sensor is fixedly installed on the inner wall of the processing tank.

[0013] In the above-mentioned wastewater treatment equipment based on fly ash washing, the stirring unit includes an isolation cylinder coaxially fixed inside the treatment tank. The isolation cylinder has an open structure at the top and bottom. A spiral auger is coaxially arranged inside the isolation cylinder. The top end of the spiral auger extends through the top of the treatment tank and outwards. A second motor for driving the spiral auger to rotate is fixedly arranged at the top of the treatment tank.

[0014] In the above-mentioned wastewater treatment equipment based on fly ash washing, multiple sets of stirring blades are coaxially rotated on the outside of the isolation cylinder via bearings. Each set of stirring blades has multiple blades and is evenly distributed around the outside of the isolation cylinder.

[0015] Compared with the prior art, the wastewater treatment equipment for fly ash washing of this utility model has at least the following beneficial effects: This utility model discloses a wastewater treatment device for fly ash washing. It features multiple treatment tanks, each integrating a dosing and stirring unit. This allows for the quantitative addition and thorough mixing of wastewater and chemical agents, ensuring a more precise ratio. Specifically, the stirring unit employs a design combining a spiral auger and an isolation cylinder, creating a vertical circulation flow within the treatment tank. The liquid is transported upwards from the inside of the isolation cylinder by the spiral auger and then flows downwards from the outside, forming a stable internal circulation path that significantly enhances the uniformity of mixing between wastewater and chemicals. Furthermore, the stirring blades are rotatably mounted on the outer wall of the isolation cylinder via bearings, passively rotating under the influence of the circulating liquid. This effectively increases the intensity of liquid disturbance, strengthens the mixing effect, avoids problems such as excessively high local concentrations or incomplete reactions, and improves the efficiency and stability of the precipitation reaction.

[0016] This utility model relates to a wastewater treatment device for fly ash washing. The wastewater tank is equipped with a driven stirring paddle at the top, which can perform preliminary homogenization treatment on the raw wastewater, helping to improve the consistency and controllability of subsequent chemical dosing reactions. The bottom of the treatment tank has a bucket-shaped structure and is equipped with a solenoid valve to control drainage, which is conducive to the mixing of wastewater and chemical mixture, reducing residues and ensuring continuous and stable operation of the system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the fly ash washing wastewater treatment equipment of this utility model; Figure 2 This is a schematic diagram of the chemical dosing unit structure of the fly ash washing wastewater treatment equipment based on the present invention. Figure 3 This is a schematic diagram of the stirring unit structure of the fly ash washing wastewater treatment equipment based on the present invention.

[0018] In the diagram: 1. Wastewater pool; 2. Sedimentation tank; 3. Treatment tank; 4. Dosing unit; 41. Storage tank; 42. Injection pipe; 43. Metering pump; 44. Liquid level sensor; 45. Inlet; 5. Stirring unit; 51. Isolation cylinder; 52. Spiral auger; 53. Second motor; 54. Stirring blades; 6. Top plate; 7. Agitator; 8. First motor; 9. Support frame; 10. Water inlet; 11. Water inlet pipe; 12. Liquid pump; 13. Drain outlet; 14. Drain pipe; 15. Solenoid valve. Detailed Implementation

[0019] The following description, in conjunction with the accompanying drawings and specific embodiments, provides a more detailed account of the wastewater treatment equipment based on fly ash washing.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] See Figures 1-3 This embodiment of the fly ash washing wastewater treatment equipment utilizes a multi-stage treatment tank 3 to achieve quantitative addition and efficient mixing of wastewater and reagents, ensuring a more precise ratio. A spiral auger 52 and an isolation cylinder 51 work together to form a liquid circulation path, significantly improving mixing uniformity. The circulating flow drives the agitator 54 to rotate passively, enhancing agitation and effectively preventing excessively high local concentrations or uneven reactions, thus improving sedimentation efficiency and treatment stability, and ensuring the continuity and reliability of wastewater treatment. In this embodiment, it mainly includes a wastewater tank 1 and a sedimentation tank 2. The dimensions of the wastewater tank 1 and sedimentation tank 2 are arranged according to actual conditions. A top plate 6 is horizontally fixed at the top of the wastewater tank 1, and an agitator 7 is vertically rotatably mounted on the top plate 6, with its end vertically inserted into the interior of the wastewater tank 1. A first motor 8 is fixedly mounted at the top of the top plate 6 to drive the agitator 7. Controlling the first motor 8 to drive the agitator 7 to rotate performs preliminary homogenization treatment of the raw wastewater, helping to improve the consistency and controllability of subsequent chemical reactions.

[0022] A treatment tank 3 for transferring liquid is provided between the wastewater tank 1 and the sedimentation tank 2. Multiple treatment tanks 3 are provided, and their number and size are arranged according to actual conditions. The dimensions in the attached drawings are for illustrative purposes only and do not limit their specific size. A support 9 is fixedly installed at the bottom of each treatment tank 3. An inlet 10 is opened on the upper part of the treatment tank 3 facing the wastewater tank 1, and an inlet pipe 11 is connected to the inlet 10. The end of the inlet pipe 11 extends into the bottom of the wastewater tank 1, and a liquid pump 12 is connected to the end of the inlet pipe 11. Controlling the operation of the liquid pump 12 draws wastewater from the wastewater tank 1 into the treatment tank 3 through the inlet pipe 11 and the inlet 10. The lower part of the treatment tank 3 has a funnel-shaped structure for convenient subsequent discharge. A drain outlet 13 is opened at the bottom of the treatment tank 3, and a drain pipe 14 is connected to the drain outlet 13. The end of the drain pipe 14 is fixedly installed on the sedimentation tank 2, and a solenoid valve 15 is fixedly installed on the drain pipe 14. Controlling the solenoid valve 15 closes the drain pipe 14 passage, facilitating the mixing of wastewater and reagents in the treatment tank 3. After mixing, controlling the solenoid valve 15 opens the drain pipe 14 passage, at which point the wastewater and reagent mixture is discharged into the sedimentation tank 2 through the drain outlet 13 and the drain pipe 14 for sedimentation.

[0023] To achieve precise quantitative addition of chemical reagents. See also Figure 1 and Figure 2 In this embodiment, the treatment tank 3 is equipped with a dosing unit 4 for adding chemicals to the interior. The dosing unit 4 includes a chemical inlet 45 on the top side of the treatment tank 3, a storage tank 41 fixedly mounted on the side of the treatment tank 3, and a dosing pipe 42 connected to the top of the storage tank 41. The end of the dosing pipe 42 is connected to the chemical inlet 45, and a metering pump 43 is mounted on the dosing pipe 42. A liquid level sensor 44 is fixedly mounted on the inner wall of the treatment tank 3. The number of liquid level sensors 44 is determined according to actual conditions. When the liquid level sensor 44 senses the liquid level, it sends a signal to stop the pump 12, at which point the wastewater in the treatment tank 3 reaches a suitable level. Then, the metering pump 43 is controlled to operate, discharging the pre-calculated chemicals into the treatment tank 3 through the dosing pipe 42, ensuring a more accurate ratio of wastewater to chemicals.

[0024] To ensure thorough mixing of wastewater and chemicals, in this embodiment, see... Figure 2 and Figure 3The treatment tank 3 is equipped with a stirring unit 5 for mixing wastewater and chemicals. The stirring unit 5 includes an isolation cylinder 51 coaxially fixed inside the treatment tank 3. The isolation cylinder 51 has an open top and bottom structure. A spiral auger 52 is coaxially mounted inside the isolation cylinder 51, with its top end extending through the top of the treatment tank 3. A second motor 53 is fixedly mounted at the top of the treatment tank 3 to drive the spiral auger 52. Multiple sets of stirring blades 54 are coaxially rotatable on the outside of the isolation cylinder 51 via bearings. Each set of stirring blades 54 has multiple blades evenly distributed around the circumference of the outside of the isolation cylinder 51. Controlling the second motor 53 to operate drives the spiral auger 52 to rotate. At this time, the liquid is conveyed upwards from inside the isolation cylinder 51 by the spiral auger 52 and then flows downwards back from outside the isolation cylinder 51, thus forming a stable internal circulation path and significantly enhancing the mixing uniformity between wastewater and chemicals. During this process, the stirring blades 54 are passively rotated by the circulating liquid, which effectively increases the intensity of liquid disturbance, enhances the mixing effect, avoids problems such as excessively high local concentration or incomplete reaction, and improves the efficiency and stability of precipitation reaction.

[0025] The method of using the wastewater treatment equipment based on fly ash washing after washing is as follows: First, control the first motor 8 to work, driving the agitator 7 to rotate, and perform preliminary homogenization treatment on the raw wastewater. Control the liquid pump 12 to work, drawing the wastewater in the wastewater tank 1 into the treatment tank 3 through the inlet pipe 11 and the inlet 10. When the liquid level sensor 44 senses the liquid level height, it sends a signal to control the liquid pump 12 to stop working. At this time, the wastewater in the treatment tank 3 reaches the appropriate amount. Then, control the metering pump 43 to work, discharging the pre-calculated reagent into the treatment tank 3 through the injection pipe 42, ensuring a more accurate ratio of wastewater to reagent.

[0026] Then, the second motor 53 is controlled to operate, driving the auger 52 to rotate. At this time, the liquid is transported upward from inside the isolation cylinder 51 by the auger 52, and then flows back downward from outside the isolation cylinder 51, thus forming a stable internal circulation path, which greatly enhances the mixing uniformity between wastewater and reagent. During this process, the stirring blade 54 is passively rotated by the circulating liquid, which effectively increases the intensity of liquid disturbance, strengthens the mixing effect, avoids the problem of excessively high local concentration or incomplete reaction, and improves the efficiency and stability of the precipitation reaction. During this process, the solenoid valve 15 is controlled to operate, closing the drain pipe 14 channel to facilitate the mixing of wastewater and reagent in the treatment tank 3. After the mixing is completed, the solenoid valve 15 is controlled to open the drain pipe 14 channel, at which time the mixture of wastewater and reagent is discharged into the sedimentation tank 2 through the drain outlet 13 and the drain pipe 14 for sedimentation.

[0027] By repeating the above operations, quantitative extraction of wastewater is achieved, and quantitative mixing of wastewater and reagents is realized. This ensures the accuracy of the wastewater-reagent ratio, guarantees the high efficiency and stability of the wastewater treatment process, and improves the pollutant removal rate and system operational reliability.

[0028] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The use of terms such as "a" or "an" in this specification and claims does not necessarily indicate a limitation on quantity. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0029] The exemplary embodiments of the present invention have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed by the present invention without exceeding the protection scope of the present invention.

Claims

1. A wastewater treatment device for fly ash washing, characterized in that: It includes a wastewater tank (1) and a sedimentation tank (2). A treatment tank (3) for transferring liquid is provided between the wastewater tank (1) and the sedimentation tank (2). A dosing unit (4) for adding chemicals is provided on the treatment tank (3). A stirring unit (5) for mixing wastewater and chemicals is provided inside the treatment tank (3).

2. The wastewater treatment equipment based on fly ash washing as described in claim 1, characterized in that: The top of the wastewater tank (1) is horizontally fixed with a top plate (6), and a stirring paddle (7) is vertically rotatably mounted on the top plate (6). The end of the stirring paddle (7) is vertically inserted into the interior of the wastewater tank (1). The top of the top plate (6) is fixedly equipped with a first motor (8) that drives the stirring paddle (7).

3. The wastewater treatment equipment based on fly ash washing as described in claim 1, characterized in that: Multiple treatment tanks (3) are provided. A bracket (9) is fixedly provided at the bottom of each treatment tank (3). An inlet (10) is provided on the upper part of the treatment tank (3) facing the wastewater pool (1). An inlet pipe (11) is connected to the inlet (10). The end of the inlet pipe (11) extends into the bottom of the wastewater tank (1), and the end of the inlet pipe (11) is connected to a liquid pump (12).

4. The wastewater treatment equipment based on fly ash washing water as described in claim 1, characterized in that: The lower part of the treatment tank (3) is a bucket-shaped structure, and a drain outlet (13) is provided at the bottom of the treatment tank (3). A drain pipe (14) is connected to the drain outlet (13). The end of the drain pipe (14) is fixedly installed on the sedimentation tank (2), and a solenoid valve (15) is fixedly installed on the drain pipe (14).

5. The wastewater treatment equipment based on fly ash washing water as described in claim 1, characterized in that: The drug filling unit (4) includes a drug inlet (45) opened on the top side of the treatment tank (3), a drug storage tank (41) is fixedly installed on the side of the treatment tank (3), a drug injection pipe (42) is connected to the top of the drug storage tank (41), the end of the drug injection pipe (42) is connected to the drug inlet (45), and a metering pump (43) is installed on the drug injection pipe (42). A liquid level sensor (44) is fixedly installed on the inner wall of the processing tank (3).

6. The wastewater treatment equipment based on fly ash washing water as described in claim 1, characterized in that: The stirring unit (5) includes an isolation cylinder (51) coaxially fixed inside the processing tank (3). The isolation cylinder (51) has an open structure at the top and bottom. A spiral auger (52) is coaxially arranged inside the isolation cylinder (51). The top end of the spiral auger (52) extends out through the top end of the processing tank (3). A second motor (53) for driving the spiral auger (52) to rotate is fixedly arranged at the top end of the processing tank (3).

7. The wastewater treatment equipment based on fly ash washing water as described in claim 6, characterized in that: The outer side of the isolation cylinder (51) is provided with multiple sets of stirring blades (54) that rotate coaxially through bearings. Each set of stirring blades (54) has multiple blades that are evenly distributed around the outer side of the isolation cylinder (51).

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