A high speed cycle adsorption clarifier

Abstract

The utility model belongs to the field of sewage treatment and regeneration, specifically relates to a high -speed circulation adsorption clarification device. The device includes main part, flow guide cylinder, center cylinder and promote stirring subassembly. Main part structure is hollow jar structure. Flow guide cylinder sets up in the inside of main part for retaining active sludge. Center cylinder sets up in the inside of main part, constructs for being linked with flow guide cylinder, and be in the top of flow guide cylinder. Promote stirring subassembly constructs for part of the inside of center cylinder. And center cylinder still constructs for can receive chemical agent and water to be handled, promote stirring subassembly still constructs for can produce high -speed circulation flow field through stirring. The technical scheme provided by the utility model can improve sewage treatment effect, reduce the risk of scale formation in subsequent treatment section of sewage.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment and regeneration, and specifically relates to a high-speed circulating adsorption clarification device. Background Technology

[0002] In the process of wastewater regeneration and resource reuse, regardless of whether membrane or thermal desalination is used, the removal of scale-forming ions such as calcium, magnesium, silicon, strontium, and barium is indispensable to reduce the risk of scaling and clogging in subsequent processes.

[0003] When the content of scaling ions in wastewater is high, the scaling ions in the water can be removed by forming insoluble compounds under the action of appropriate agents, based on the solubility product principle. Commonly used devices and methods include mechanically stirred clarifiers and high-density clarifiers. However, these conventional technical solutions face many problems in practical applications: 1) The formed insoluble compounds have small particle diameters and slow settling speeds, and are easily carried to subsequent processes by the flow of wastewater, causing scaling at the interface of media in subsequent processes; 2) Poor adaptability to fluctuations in the quality and quantity of raw water; 3) Large dosage of chemical agents; 4) Inefficient discharge of sediment and bottom sludge. Utility Model Content

[0004] In view of this, in order to solve the defects of existing wastewater treatment processes that easily lead to scaling at the contact interface of subsequent processes, this utility model provides a high-speed circulating adsorption clarification device.

[0005] The high-speed circulating adsorption clarification device includes:

[0006] The main body is constructed as a hollow, can-like structure;

[0007] A flow guide tube, located inside the main body, is used to retain active sludge.

[0008] A central cylinder, disposed inside the main body, is configured to communicate with the guide cylinder and be positioned above the guide cylinder; and

[0009] The stirring assembly is designed to extend partially into the interior of the central cylinder.

[0010] The central cylinder is configured to receive chemical reagents and water to be treated, and the lifting and stirring assembly is configured to generate a high-speed circulating flow field through stirring.

[0011] As an extension of the above technical solution, the present invention also provides the following embodiments:

[0012] It includes an umbrella-shaped cover with openings at both ends, which is disposed inside the main body and outside the central cylinder.

[0013] The lifting and stirring assembly includes a motor disposed above the main body, a stirring shaft configured to be movably connected to the motor, and a lifting and stirring device disposed below the stirring shaft, wherein the lifting and stirring device is disposed inside the central cylinder.

[0014] Includes a bracket disposed above the main body for supporting the motor.

[0015] A water seal structure is provided on the main body to provide a dynamic seal for the stirring shaft.

[0016] A sludge discharge hopper connected to the main body is provided below the main body, and a sludge scraper is provided on the outside of the guide tube.

[0017] A water collection tank is provided inside the main body at a position above the central cylinder. The water collection tank includes a tank body and a submersion hole opened on the tank body to allow purified water to pass through. A water outlet pipe is connected to the lower end of the tank body to allow purified water inside the tank body to be discharged out of the main body.

[0018] A scum trough is provided between the water collection tank and the inner wall of the main body. The top of the scum trough is lower than the top of the water collection tank. A scum discharge pipe is connected to the lower end of the scum trough and is configured to discharge the scum inside the scum trough into the main body.

[0019] Includes a dosing mechanism configured to add chemical agents into the central cylinder and / or the umbrella-shaped shroud.

[0020] It includes a water inlet pipe configured to communicate with the central cylinder.

[0021] The advantages of this invention compared to the prior art are as follows:

[0022] Thanks to the design of components such as the guide tube, central tube, lifting and stirring assembly, and umbrella-shaped shroud, the products of the reaction between the treated water and chemical agents can be adsorbed and nucleated by the retained active sludge. Furthermore, the high-speed circulating flow field generated by the lifting and stirring assembly increases the contact probability between the crystal nuclei of the sparingly soluble compounds produced after the reaction, thereby promoting stable crystal growth. The crystal nuclei within the central tube, after entering the umbrella-shaped shroud with the treated water, flow through a variable-sized annular cross-section, transitioning to a non-turbulent flow state, which further induces crystal growth. This allows for more thorough solid-liquid separation of the treated water within the main body compared to existing technologies, improving the wastewater treatment effect and reducing the risk of scaling at the contact interfaces in subsequent wastewater treatment stages. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the high-speed circulating adsorption clarification device 100 according to the present invention.

[0024] All accompanying drawings used in this invention are schematic diagrams for illustrating the structure and principle, and are not necessarily drawn according to actual dimensions and proportions.

[0025] The specific meanings of the various labels in the figure are as follows:

[0026] 1. Main body; 2. Guide tube; 3. Central tube; 4. Lifting and stirring assembly; 41. Motor; 42. Stirring shaft; 43. Lifting agitator; 5. Umbrella-shaped cover; 6. Support; 7. Water seal structure; 8. Sludge discharge hopper; 9. Sludge scraper; 10. Water collection tank; 101. Tank body; 102. Submersion hole; 11. Water outlet pipe; 12. Scum tank; 13. Scum discharge pipe; 14. Dosing mechanism; 141. First dosing pipe; 142. Second dosing pipe; 143. Third dosing pipe; 144. Fourth dosing pipe; 15. Water inlet pipe; 16. Sludge discharge pipe; 100. High-speed circulating adsorption clarification device. Detailed Implementation

[0027] The embodiments of this utility model will now be described in more detail with reference to the accompanying drawings.

[0028] Figure 1 This is a schematic diagram of the high-speed circulating adsorption clarification device 100 according to the present invention. As shown in the figure, the high-speed circulating adsorption clarification device 100 includes a main body 1, a guide cylinder 2, a central cylinder 3, and a lifting and stirring assembly 4. The main body 1 has a hollow tank-like structure. The guide cylinder 2 is located inside the lower part of the main body 1 and has an open structure at both ends for retaining active sludge. The central cylinder 3 is also located inside the main body 1, connected to the guide cylinder 2, and positioned above the guide cylinder 2. The lifting and stirring assembly 4 extends partially into the interior of the central cylinder 3. In addition, the central cylinder 3 is configured to receive chemical reagents and water to be treated from the outside, and the lifting and stirring assembly 4 is configured to generate a high-speed circulating flow field in the mixture of water to be treated and chemical reagents through stirring.

[0029] During operation, the water to be treated from the outside is introduced into the central cylinder 3, where chemical agents are added. The water and chemical agents react in the lower section (active reaction section) of the central cylinder 3, causing scale ions such as calcium, magnesium, silicon, strontium, and barium in the water to form insoluble compounds. Since the guide cylinder 2 is located below the central cylinder 3 and is connected to it, these insoluble compounds are adsorbed and nucleated by the active sludge retained inside the guide cylinder 2. Simultaneously, the lifting and stirring component 4 is activated, stirring the water and generating a high-speed circulating flow field, thereby increasing the contact probability between crystal nuclei and promoting stable crystal growth. Subsequently, the grown dense crystal nuclei are lifted upwards by the lifting and stirring component 4 to the upper section (high-speed circulation section) of the central cylinder 3 along with the water, and flow out of the central cylinder 3 from the upper end, entering the interior of the main body 1. At this point, the area inside the main body 1, excluding the central cylinder 3, is equivalent to a solid-liquid separation zone. The water to be treated after the above treatment accumulates here. The dense crystal nuclei formed by the aggregation of scale ions in the water gradually sink under the action of gravity and are transformed into sediment. The water to be treated is purified, and the liquid at the top is the purified water.

[0030] It should also be noted that the active sludge inside the guide tube 2 is the sludge that has settled at the bottom of the main body 1. Since the lower end of the guide tube 2 is open, the sludge that has settled at the bottom of the main body 1 can enter the guide tube 2.

[0031] This design allows the insoluble compounds resulting from the reaction between the water and chemical agents to be adsorbed and nucleated by the retained active sludge. Furthermore, the high-speed circulating flow field generated by the stirring component 4 increases the contact probability between the crystal nuclei of the insoluble compounds, promoting stable crystal growth. This results in more thorough solid-liquid separation of the water within the main body 1 compared to existing technologies, improving wastewater treatment efficiency and reducing the risk of scaling at the contact interfaces in subsequent wastewater treatment stages. Additionally, the retained active sludge promotes the aggregation of insoluble compounds, enhancing the ability of scale-forming ions in the water to generate crystal nuclei, thereby reducing the amount of chemical agents required. This makes the wastewater treatment scheme using the high-speed circulating adsorption clarification device 100 according to this invention more economical.

[0032] In some embodiments of this utility model, the mass concentration of solids in the active sludge retained in the guide tube 2 is between 0.2% and 0.5%.

[0033] In some embodiments of this utility model, the guide tube 2 and the central tube 3 are connected, and a plurality of support structures (not shown) connected to the inner wall of the main body 1 are provided in the circumferential direction of the central tube 3 to achieve stable installation of the central tube 3 and the guide tube 2 inside the main body 1.

[0034] like Figure 1 As shown, in some embodiments of this invention, the high-speed circulating adsorption clarification device 100 includes an umbrella-shaped shroud 5 with openings at both ends, disposed inside the main body 1 and outside the central cylinder 3. During operation, the water to be treated flowing out of the central cylinder 3 flows into the umbrella-shaped shroud 5, along its inner wall, and into the main body 1 from the lower conical opening of the shroud 5. Because the umbrella-shaped shroud 5 is constructed with an outer diameter that gradually increases from top to bottom, the flow state of the water to be treated transitions from turbulent to non-turbulent when flowing through the inner wall of the umbrella-shaped shroud 5. In this flow state, the probability of nucleated solid particles breaking apart under the shear force of the water flow disturbance is reduced, and the crystal nuclei carried by the water to be treated can be induced to continue growing, thus transforming into sedimentary flocs. This design further increases the size of the insoluble particles carried in the water to be treated, thereby enabling a more thorough subsequent solid-liquid separation process.

[0035] Preferably, the uppermost end of the umbrella-shaped cover 5 is above the uppermost end of the central cylinder 3, so that the water to be treated flowing out of the central cylinder 3 has the opportunity to flow through the inner wall of the umbrella-shaped cover 5 to achieve a non-turbulent flow state.

[0036] like Figure 1 As shown, in some embodiments of this utility model, the lifting and stirring assembly 4 includes a motor 41 disposed above the main body 1, a stirring shaft 42 configured to be movably connected to the motor 41, and a lifting agitator 43 disposed below the stirring shaft 42. The lifting agitator 43 is disposed inside the central cylinder 3. In specific operations, the operator controls the lifting agitator 43 by controlling the working state of the motor 41, thereby controlling the flow field state of the water to be treated inside the central cylinder 3.

[0037] Preferably, in order to improve the adaptability of the high-speed circulating adsorption clarification device 100 to changes in parameters such as water volume fluctuations, the motor 41 is a variable frequency motor.

[0038] Preferably, the agitator 43 is a stirring paddle.

[0039] Preferably, during the purification process, the edge linear velocity of the agitator 43 is controlled between 1.0 and 3.0 m / s to create a high-speed flow field for the water to be treated.

[0040] like Figure 1As shown, in some embodiments of this utility model, in order to achieve a stable installation of the motor 41, a bracket 6 for supporting the motor 41 is provided on the upper part of the main body 1.

[0041] like Figure 1 As shown, in some embodiments of this utility model, in order to reduce the fugitive emissions of volatile organic compounds and improve the environmental protection effect in the wastewater treatment process, a water seal structure 7 is provided on the main body 1 to provide a dynamic seal for the stirring shaft 42. This design also enhances the adaptability of the high-speed circulating adsorption clarification device 100 according to this utility model to hazardous environments and enables it to treat wastewater containing flammable liquids. It should be noted that the water seal structure 7 can be any component that can provide a dynamic seal in the prior art, and its structure and principle are well known to those skilled in the art and will not be described in detail here.

[0042] like Figure 1 As shown, in some embodiments of this utility model, a sludge discharge hopper 8 connected to the main body 1 is provided below the main body 1, and a sludge scraper 9 is provided on the outside of the guide tube 2. The sludge discharge hopper 8 is used to discharge settled bottom sludge, and the sludge scraper 9 is used to concentrate the settled bottom sludge.

[0043] Furthermore, a sludge discharge pipe 16 is connected to the side wall of the sludge discharge hopper 8 for discharging the settled bottom sludge inside the sludge discharge hopper 8 into the high-speed circulating adsorption clarification device 100.

[0044] In some embodiments of this utility model, a rotating shaft (not shown) is provided at the center of the mud scraper 9. The upper end of the rotating shaft is connected to the lower end of the stirring shaft 42. The rotating shaft and the stirring shaft 42 are constructed as a concentric double shaft structure to realize the installation of the mud scraper 9 and provide a structural basis for the rotational movement of the mud scraper 9.

[0045] In some embodiments of this invention, the high-speed circulating adsorption clarification device 100 includes an auxiliary rake lifting mechanism (not shown). The auxiliary rake lifting mechanism is configured to lift the scraper rake 9 to facilitate subsequent maintenance operations.

[0046] like Figure 1As shown, in some embodiments of this utility model, a water collection tank 10 is provided inside the main body above the central cylinder 3. The water collection tank 10 includes a tank body 101 and a submersion hole 102 opened on the tank body 101 to allow purified water to pass through. A water outlet pipe 11 is connected to the lower end of the tank body 101, configured to discharge the liquid inside the tank body 101 to the main body 1. Since the treated wastewater undergoes solid-liquid separation inside the main body 1, the liquid at the top is purified water. Through the water collection tank 10, water can be collected through the submersion hole 102. The water entering the water collection tank 10 is collected and then discharged from the high-speed circulating adsorption clarification device 100 through the water outlet pipe 11. Obviously, in order to successfully achieve the purification operation of the water to be treated, the water collection tank 10 should fit snugly around the upper part of the umbrella-shaped cover 5, and the uppermost part of the umbrella-shaped cover 5 should be higher than the uppermost part of the water collection tank 10 to avoid disorder in the flow of liquid inside the main body 1.

[0047] Preferably, in some embodiments of the present invention, the side of the water collection tank 10 near the umbrella-shaped cover 5 is provided with a groove-shaped structure, and the water outlet pipe 11 is connected and disposed below the groove-shaped structure so that the purified water inside the water collection tank 10 can be smoothly discharged by the end drop.

[0048] More preferably, the water collection tank 10 adopts a radial finger-shaped groove structure.

[0049] like Figure 1 As shown, in some embodiments of this utility model, a scum trough 12 is provided between the water collection tank 10 and the inner wall of the main body 1. The top of the scum trough 12 is lower than the top of the water collection tank 10. A scum discharge pipe 13 is connected to the lower end of the scum trough 12, which is configured to discharge the scum inside the scum trough 12 to the main body 1. Since the top of the scum trough 12 is lower than the top of the water collection tank 10, light impurities on the surface of the liquid in the water collection tank 10 can flow into the scum trough 12 when the water collection tank 10 is full, thereby achieving the collection and discharge of light impurities in the water, and thus achieving further purification of the purified water.

[0050] In some embodiments of this utility model, the scum trough 12 is connected to the inner wall of the main body 1, the water collection trough 10 is connected to the scum trough 12, and the umbrella-shaped cover 5 is connected to the water collection trough 10 by welding.

[0051] like Figure 1 As shown, in some embodiments of the present invention, the high-speed circulating clarification device 100 includes a dosing mechanism 14 configured to add chemical agents into the central cylinder 1 and / or the umbrella-shaped shroud 5, so as to achieve the smooth addition of chemical agents.

[0052] In some preferred embodiments of the present invention, the dosing mechanism 14 includes a first dosing pipe 141, a second dosing pipe 142 and a third dosing pipe 143 arranged sequentially from bottom to top on the side wall of the central cylinder 3.

[0053] Furthermore, the dosing mechanism 14 includes a fourth dosing tube 144 disposed on the side wall of the umbrella-shaped cover 5.

[0054] With this design, four different chemical agents can be added sequentially to the water to be treated using the first dosing pipe 141 to the fourth dosing pipe 144 as the water flows, in order to improve the ability of scale ions in the water to generate crystal nuclei and grow crystal nuclei.

[0055] like Figure 1 As shown, in some embodiments of this utility model, the high-speed circulating clarification device 100 includes a water inlet pipe 15 configured to communicate with the central cylinder 3, so as to smoothly introduce the water to be treated.

[0056] Preferably, in some embodiments of this utility model, the water inlet pipe 15 and the first dosing pipe 141 are arranged opposite to each other.

[0057] In some specific embodiments of this utility model, the concentration of suspended solids in the water to be treated is ≤1000mg / L, hardness is ≤2000mg / L, and silica concentration is ≤200mg / L. Using the high-speed circulating clarification device 100 according to this utility model, the purified water quality can reach the level of suspended solids concentration ≤20mg / L, hardness ≤50mg / L, and silica concentration ≤20mg / L. However, when the same parameters of water are treated using a mechanical stirring clarification tank in the prior art, the purified water quality can only reach the standard of suspended solids concentration ≤50mg / L, hardness ≤100mg / L, and silica concentration ≤40mg / L. This proves that the high-speed circulating clarification device 100 according to this utility model has good wastewater treatment capabilities.

[0058] In some embodiments of this invention, the particle diameter of the settled flocs is between 0.15 and 0.30 mm.

[0059] In some embodiments of this invention, when the water temperature fluctuation is ±5℃ / h and the water volume fluctuation is ±10%, the hydraulic flow field within the guide tube 2, central tube 3, and umbrella-shaped cover 5 can be kept within a reasonable range by adjusting the rotation speed of the motor 41, thereby achieving a good treatment effect on the water. Specifically, the adjustment method is as follows: when the water volume is small and / or the water temperature is low, increase the rotation speed of the motor 41; when the water volume is large and / or the water temperature is high, decrease the rotation speed of the motor.

[0060] According to the high-speed circulating adsorption clarification device 100 of this utility model, thanks to the design of components such as the guide tube 2, the central tube 3, the lifting and stirring assembly 4, and the umbrella-shaped cover 5, the sparingly soluble compounds after the reaction between the water to be treated and the chemical agents can be adsorbed and nucleated by the retained active sludge. Furthermore, the high-speed circulating flow field generated by the lifting and stirring assembly 4 can increase the contact probability between the crystal nuclei of the sparingly soluble compounds produced by the reaction, thereby promoting the stable growth of the crystal nuclei. After the crystal nuclei in the central tube 3 enter the umbrella-shaped cover 5 with the water to be treated, they transition to a non-turbulent flow state, which can further induce the growth of the crystal nuclei. Thus, the water to be treated can achieve more thorough solid-liquid separation in the main body 1 compared with the prior art, improving the wastewater treatment effect and reducing the risk of scaling at the contact interface of the subsequent wastewater treatment process.

[0061] In addition, since the retained active sludge promotes the aggregation of insoluble compounds and enhances the ability of scale ions in the water to be treated to generate crystal nuclei, the amount of chemical reagents required is reduced, making the wastewater treatment scheme using the high-speed circulating adsorption clarification device 100 according to this invention more economical.

[0062] In this utility model, the specific meanings of terms such as "upper," "lower," "left," "right," "inner," "outer," "middle," and "side" when indicating location are as follows: Figure 1 The drawing state of the medium-to-high speed circulating adsorption clarification device 100 is for reference.

[0063] In this utility model, "connection" includes "direct connection" and "indirect connection".

[0064] Finally, it should be noted that although the present invention has been described in detail with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A high-speed circulating adsorption clarification device, characterized in that, include: The main body (1) is constructed as a hollow, can-shaped structure; A guide tube (2) is disposed inside the main body (1) to retain active sludge; A central cylinder (3) is disposed inside the main body (1), configured to communicate with the guide cylinder (2), and positioned above the guide cylinder (2); and The stirring assembly (4) is configured to extend partially into the interior of the central cylinder (3). The central cylinder (3) is configured to receive chemical agents and water to be treated, and the lifting and stirring assembly (4) is configured to generate a high-speed circulating flow field through stirring.

2. The high-speed circulating adsorption clarification device according to claim 1, characterized in that: It includes an umbrella-shaped cover (5) with openings at both ends, which is disposed inside the main body (1) and outside the central cylinder (3).

3. The high-speed circulating adsorption clarification device according to claim 2, characterized in that: The lifting and stirring assembly (4) includes a motor (41) disposed above the main body (1), a stirring shaft (42) configured to be movably connected to the motor (41), and a lifting stirrer (43) disposed below the stirring shaft (42), wherein the lifting stirrer (43) is disposed inside the central cylinder (3).

4. The high-speed circulating adsorption clarification device according to claim 3, characterized in that: Includes a bracket (6) disposed above the main body (1) for supporting the motor (41).

5. The high-speed circulating adsorption clarification device according to claim 4, characterized in that: A water seal structure (7) is provided on the main body (1) to provide a dynamic seal for the stirring shaft (42).

6. The high-speed circulating adsorption clarification device according to claim 5, characterized in that: A mud discharge hopper (8) connected to the main body (1) is provided below the main body (1), and a mud scraper (9) is provided on the outside of the guide tube (2).

7. The high-speed circulating adsorption clarification device according to claim 6, characterized in that: A water collection tank (10) is provided inside the main body above the central cylinder (3). The water collection tank (10) includes a tank body (101) and a submersion hole (102) opened on the tank body (101) to allow purified water to pass through. A water outlet pipe (11) is connected to the lower end of the tank body (101) and is configured to discharge the purified water inside the tank body (1) to the main body (1).

8. The high-speed circulating adsorption clarification device according to claim 7, characterized in that: A scum trough (12) is provided between the water collection tank (10) and the inner wall of the main body (1). The top of the scum trough (12) is lower than the top of the water collection tank (10). A scum discharge pipe (13) is connected to the lower end of the scum trough (12) and is configured to discharge the scum inside the scum trough (12) into the main body (1).

9. The high-speed circulating adsorption clarification device according to any one of claims 2 to 8, characterized in that: Includes a dosing mechanism (14) configured to add chemical agents into the central cylinder (3) and / or the umbrella-shaped cover (5).

10. The high-speed circulating adsorption clarification device according to claim 9, characterized in that: It includes a water inlet pipe (15) configured to communicate with the central cylinder (3).

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