An industrial wastewater flocculation treatment unit

Abstract

This invention relates to the field of wastewater flocculation treatment technology, specifically to an industrial wastewater flocculation treatment unit, comprising a flocculation chamber containing multiple turbulence plates arranged side-by-side at intervals. Each turbulence plate is 5-15 cm thick and has trapezoidal cross-section holes (number one and number two) spaced apart on it, with the opening directions of the holes opposite. This invention, through the design of the flocculation plates and their coordination with the flow of industrial wastewater, generates numerous eddies within the wastewater. This achieves thorough mixing of the industrial wastewater and flocculant without the need for mechanical stirring, shortening the flocculation time and avoiding the breakage of flocs that occurs with mechanical stirring, thus improving the flocculation and agglomeration effect.

Description

Technical Field

[0001] This invention relates to the field of wastewater flocculation treatment technology, and more specifically to an industrial wastewater flocculation treatment unit. Background Technology

[0002] Industrial wastewater, including production wastewater, industrial wastewater, and cooling water, refers to the sewage and waste liquid generated during industrial production processes. It encompasses raw materials, intermediate products, by-products, and pollutants generated during production. Industrial wastewater is diverse and complex in composition. For example, electrolytic salt wastewater contains mercury, heavy metal smelting wastewater contains lead, cadmium, and other metals, electroplating wastewater contains cyanide, chromium, and other heavy metals, petroleum refining wastewater contains phenol, and pesticide manufacturing wastewater contains various pesticides. Industrial wastewater often contains multiple toxic substances, polluting the environment and posing a significant threat to human health. Therefore, comprehensive utilization is essential to turn this harmful substance into a beneficial one, and appropriate purification measures must be taken before discharge based on the composition and concentration of pollutants in the wastewater.

[0003] Industrial wastewater treatment initially utilizes flocculants to remove suspended solids and fine particles from the wastewater, facilitating subsequent treatment processes. This is typically achieved using stirred tanks or mixing vessels, with mechanical agitation for mixing. However, while existing mechanical agitation can achieve rapid flow of industrial wastewater, the wastewater itself tends to be static. This results in poor diffusion of the flocculant, requiring prolonged agitation to achieve uniform mixing. Furthermore, mechanical agitation can easily break up flocs, hindering the formation of larger flocs and ultimately leading to poor flocculation.

[0004] Therefore, the present invention provides an industrial wastewater flocculation treatment unit to improve the flocculation problem existing in the prior art. Summary of the Invention

[0005] The technical problem to be solved by this invention is to provide an industrial wastewater flocculation treatment unit that solves the technical problems of long flocculation reaction time and poor flocculation effect.

[0006] This invention provides the following technical solution: An industrial wastewater flocculation treatment unit, comprising a flocculation chamber, within which multiple turbulence plates are arranged side-by-side at intervals. Each turbulence plate has a thickness of 5-15 cm. Turbulence plates are perforated with trapezoidal first and second turbulence holes at intervals, with the opening directions of the first and second turbulence holes opposite. The main function of the turbulence plates is to create a pressure difference through the trapezoidal structure of the first and second turbulence holes during the flow of industrial wastewater, thereby enabling the wastewater to form eddies. When the thickness of the turbulence plate is less than 5 cm, the pressure difference is small. If the pressure difference is increased by reducing the size of the first and second turbulence holes, it is impossible for flocculated particles to pass through, easily causing blockage. Therefore, the thickness of the turbulence plates needs to be greater than 5 cm; however, the thickness of the turbulence plates needs to be kept within 15 cm to reduce material usage while ensuring good eddy flocculation.

[0007] Preferably, the first and second turbulence orifices are arranged vertically in a long strip shape. They can also be designed in other shapes, such as a frustum cone or a short strip structure. The arrangement can also be inclined or horizontal, but a long strip vertical arrangement is more convenient for processing and cleaning.

[0008] Preferably, the turbulence plate is integrally cast by sand casting. Sand casting allows the surface of the turbulence plate to naturally form a rough surface, enabling eddies to form when industrial wastewater flows over the surface of the turbulence plate, promoting flocculation and mixing. Of course, other processing methods can also be used, such as laser cutting, wire cutting, grinding, stamping, etc., and then sandblasting is used to form a rough surface on the surface of the turbulence plate.

[0009] Preferably, the outlet of the first turbulence orifice and / or the inlet of the second turbulence orifice have a non-linear structure. They can be S-shaped, triangular, or rectangular, or a combination of these shapes, so that the first turbulence orifice and / or the second turbulence orifice can also form a pressure difference along the length direction and generate eddies.

[0010] Preferably, a feeding pipe is inserted through the turbulence plate, and the feeding pipe is arranged along the length direction of the first turbulence hole and / or the second turbulence hole. A dissolving tank is formed along the length direction of the feeding pipe. The feeding pipe can also be arranged in other positions, but according to the arrangement of the present invention, the industrial wastewater and flocculant can be fully and uniformly contacted, and it can also form a vortex in conjunction with the first and second turbulence holes to promote flocculation and mixing.

[0011] Preferably, the flocculation treatment unit further includes an inlet pipe, a baffle plate, a filter screen, a first collection tank, and a circulation pump. An inlet pipe is fixedly installed on one side of the flocculation chamber; a baffle plate is slidably installed at the bottom of the flocculation chamber; a filter screen is fixedly installed below the baffle plate; a first collection tank is fixedly installed on the left side of the flocculation chamber; the inlet of the circulation pump is located at the upper right of the flocculation chamber, and the outlet is located at the lower left of the flocculation chamber. If the industrial wastewater is constantly flowing, a circulation pump is not required.

[0012] Preferably, a hollow rod is fixedly installed inside the flocculation chamber; a float is slidably installed inside the hollow rod, and induction plates are fixedly installed at both ends of the hollow rod.

[0013] Preferably, guide rails are symmetrically installed at the bottom of the flocculation chamber; racks are fixedly installed inside the guide rails; gears are symmetrically installed on both sides of the partition, and the gears mesh with the racks; a rotating shaft is fixedly installed between the gears; a moving motor is fixedly installed inside the partition, and the output shaft of the moving motor is fixedly connected to the rotating shaft.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. This invention achieves the generation of numerous eddies within industrial wastewater through the design of the flocculation plate and its coordination with the flow of industrial wastewater. This allows for thorough mixing of industrial wastewater and flocculant without the need for mechanical stirring, shortening the flocculation time and preventing the breakage of flocs as seen with mechanical stirring, thus improving the flocculation and agglomeration effect.

[0016] 2. Through the ingenious design of the feeding pipe, this invention enables the flocculant to be fully mixed with industrial wastewater and gradually dissolve as the wastewater flows, resulting in a more uniform distribution of the flocculant in the industrial wastewater and a better flocculation effect. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is an overall schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the partition and filter screen structure of the present invention;

[0020] Figure 3 This is a schematic diagram showing the arrangement of the turbulence plates according to the present invention;

[0021] Figure 4 This is a schematic diagram showing that the outlet of the first turbulence plate of the present invention is S-shaped;

[0022] Figure 5 This is a schematic diagram showing that the outlet of the first turbulence plate of the present invention is triangular;

[0023] Figure 6 This is a schematic diagram showing that the outlet of the first turbulence plate of the present invention is rectangular;

[0024] Figure 7 This is a schematic diagram of the structure of the float of the present invention;

[0025] Figure 8 This is a schematic diagram of the baffle of the present invention;

[0026] Figure 9 This is a schematic diagram of the meshing of the rack and gear of the present invention.

[0027] In the diagram: 1. Flocculation chamber, 11. Hollow rod, 12. Float, 13. Induction plate, 14. Water inlet pipe, 2. Feeding pipe, 21. Dissolving tank, 3. Baffle, 4. Filter screen, 5. No. 1 collection bucket, 6. Turbulence plate, 61. No. 1 turbulence hole, 62. No. 2 turbulence hole, 7. Circulation pump, 8. Guide rail, 81. Rack, 82. Gear, 83. Rotating shaft, 84. Moving motor. Detailed Implementation

[0028] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0029] like Figures 1 to 9 As shown, the industrial wastewater flocculation treatment unit of the present invention includes a flocculation chamber 1. Multiple turbulence plates 6 are arranged side by side at intervals in the flocculation chamber 1. The thickness of each turbulence plate 6 is 5-15cm. Turbulence plates 6 are provided with trapezoidal cross-section No. 1 turbulence hole 61 and No. 2 turbulence hole 62 at intervals. The opening directions of No. 1 turbulence hole 61 and No. 2 turbulence hole 62 are opposite. Along the direction of water flow, the opening of the first turbulence hole 61 is large and the outlet is small, while the opening of the second turbulence hole 62 is small and the outlet is large. By adjusting the thickness of the turbulence plate 6, the first turbulence hole 61 and the second turbulence hole 62 can pressurize or depressurize the industrial wastewater. This depressurization at the outlet of the first turbulence hole 61 forms a turbulence zone S2 (the grid area in the figure), and depressurization in the second turbulence hole 62 further forms a turbulence zone S3 (the grid area in the figure). The turbulence zones S2 and S3 can form small eddies, which promote the full mixing of flocculant and industrial wastewater, avoiding the disintegration of flocs due to excessive mixing in the prior art, thereby improving the flocculation effect and shortening the flocculation time.

[0030] In one embodiment of the present invention, the first turbulence hole 61 and the second turbulence hole 62 are arranged vertically in a long strip shape. This arrangement facilitates the passage of agglomerated flocs and reduces the obstruction of the flocs by the turbulence plate 6; on the other hand, it facilitates the rinsing and cleaning of the turbulence plate 6.

[0031] As one embodiment of the present invention, the turbulence plate 6 is integrally cast by sand casting. Sand casting can make the turbulence plate 6 form a rough surface, which is beneficial for industrial wastewater to form eddies on the surface of the turbulence plate 6 and promote the mixing of industrial wastewater and flocculant. If necessary, the roughness of the surface of the turbulence plate 6 can be improved by sandblasting.

[0032] In one embodiment of the present invention, the outlet of the first turbulence orifice 61 and / or the inlet of the second turbulence orifice 62 are non-linear structures, and can be one or more combinations of S-shape, triangle, or rectangle. This design allows the opening size of the cross-section of the outlet of the first turbulence orifice 61 and / or the inlet of the second turbulence orifice 62 to change along its length, thereby creating a pressure difference or velocity difference, which promotes the generation of eddies and facilitates the thorough mixing of flocculant and industrial wastewater.

[0033] In one embodiment of the present invention, a feeding pipe 2 is inserted through the turbulence plate 6. The feeding pipe 2 is arranged along the length direction of the first turbulence hole 61 and / or the second turbulence hole 62, and a dissolving tank 21 is formed along the length direction of the feeding pipe 2. The feeding pipe 2 is arranged after the inlet and before the outlet of the first turbulence hole 61, and forms a turbulence zone S1 (the grid area in the figure) with the inner wall of the first turbulence hole, so that the flocculant and industrial wastewater are initially mixed in the first turbulence hole 61. The feeding pipe 2 is arranged after the inlet and before the outlet of the second turbulence hole 62, so that the flocculant and industrial wastewater are initially mixed in the second flocculation hole. The industrial wastewater enters the dissolving tank 21, dissolves the flocculant and carries it away, and flocculation is completed between adjacent turbulence plates 6. Small eddy currents are generated in the turbulence plate 6 and in the outlet area of ​​the turbulence plate 6, which can significantly improve the mixing effect and flocculation efficiency.

[0034] In one embodiment of the present invention, the flocculation unit 3 further includes an inlet pipe 14, a baffle plate 3, a filter screen 4, a first collection tank 5, and a circulation pump 7. The inlet pipe 14 is fixedly installed on one side of the flocculation chamber 1. The baffle plate 3 is slidably installed at the bottom of the flocculation chamber 1. The baffle plate 3 is used to seal and separate the industrial wastewater from the filter plate to ensure the sealing of the bottom of the flocculation chamber 1. The filter screen 4 is fixedly installed below the baffle plate 3. The filter screen 4 is used to filter out impurities after flocculation. The first collection tank 5 is fixedly installed on the left side of the flocculation chamber 1. The first collection tank 5 is used to collect impurities after flocculation. The inlet of the circulation pump 7 is located at the upper right of the flocculation chamber 1, and the outlet is located at the lower left of the flocculation chamber 1. The circulation pump 7 can promote the flow of industrial wastewater and thus cooperate with the turbulence plate 6 to accelerate mixing and flocculation.

[0035] During operation, the operator opens the inlet pipe 14 via the control unit, allowing industrial wastewater to flow into the flocculation chamber 1. Once the chamber is full, the circulation pump 7 is started, causing the wastewater to circulate through the turbulence plate 6 and dissolve the flocculant. The flow of the wastewater, combined with the turbulence plate 6, improves the flocculation effect and shortens the flocculation time. Flocculant is pre-placed in the feed pipe 2. When the flocculant comes into contact with the wastewater, it dissolves; otherwise, it remains in the feed pipe 2. After a period of flocculation, the control unit moves the baffle 3. At this point, the flocculated wastewater flows through the filter screen 4 to the oxidation unit, while the filter screen 4 retains the flocculated residue. Once the wastewater has completely flowed into the oxidation unit, the control unit moves the baffle 3 in the opposite direction. The moving baffle 3 then acts as a scraper, pushing the flocculated impurities in the filter screen 4 towards the collection bucket.

[0036] In one embodiment of the present invention, a hollow rod 11 is fixedly installed inside the flocculation chamber 1, and the hollow rod 11 is used to fix the float 12; the float 12 is slidably installed inside the hollow rod 11, and the float 12 is used to float with the injection of industrial wastewater; sensor plates 13 are fixedly installed at both ends of the hollow rod 11, and the float 12 contacts the sensor plates 13 to remind the staff whether the flocculation unit 3 is full of water;

[0037] When water is injected into the flocculation unit 3, the float 12 will rise with the water level. When the float 12 rises to its highest point, it contacts the sensing plate 13. The sensing plate 13 transmits a signal to the control unit, which controls the inlet pipe 14 to stop water intake. At the same time, the control unit controls the circulation pump 7 to start. After flocculation is completed for a period of time, the control unit controls the baffle 3 to slide. The industrial wastewater after flocculation enters the filter screen 4 after the baffle 3 slides open. The filter screen 4 filters out the industrial wastewater. At this time, the float 12 gradually moves downward with the water level. When the float 12 contacts the sensing plate 13 at the bottom of the hollow rod 11, the sensing plate 13 transmits a signal to the control unit. The control unit controls the baffle 3 to return to its original position and starts the next round of water injection.

[0038] In one embodiment of the present invention, guide rails 8 are symmetrically installed at the bottom of the flocculation chamber 1, and the guide rails 8 are used to limit the position of the partition 3; a rack 81 is fixedly installed inside the guide rails 8, and gears 82 are symmetrically installed on both sides of the partition 3. The gears 82 mesh with the rack 81, and the gears 82 are used to move on the rack 81, thereby driving the partition 3 to move; a rotating shaft 83 is fixedly installed between the gears 82, and the rotating shaft 83 is used to drive the gears 82 to rotate; a moving motor 84 is fixedly installed inside the partition 3, and the output shaft of the moving motor 84 is fixedly connected to the rotating shaft 83, and the moving motor 84 is used to drive the rotating shaft 83 to rotate.

[0039] During operation, the control unit controls the rotation of the moving motor 84, which in turn drives the rotating shaft 83 to rotate. The rotating shaft 83 in turn drives the gear 82 to rotate, and the gear 82 in turn drives the partition 3 to move on the guide rail 8. When a reset is required, it is only necessary to reverse the rotation of the moving motor 84.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An industrial wastewater flocculation treatment unit, comprising a flocculation chamber (1), characterized in that: Multiple turbulence plates (6) are arranged side by side at intervals in the flocculation chamber (1). The thickness of each turbulence plate (6) is 5-15cm. Turbulence holes No. 1 (61) and No. 2 (62) with trapezoidal cross-section are spaced apart on the turbulence plate (6). The opening directions of turbulence holes No. 1 (61) and No. 2 (62) are opposite. Turbulence holes No. 1 (61) has a large opening and a small outlet, while turbulence holes No. 2 (62) has a small opening and a large outlet. The outlet of the first turbulent flow hole (61) and / or the inlet of the second turbulent flow hole (62) are non-linear structures; The turbulence plate (6) is inserted with a feeding pipe (2), which is arranged along the length of the first turbulence hole (61) and / or the second turbulence hole (62). The feeding pipe (2) is provided with a dissolving tank (21) along its length. The flocculation treatment unit also includes an inlet pipe (14), a partition (3), a filter screen (4), a first collection bucket (5), and a circulation pump (7). The inlet pipe (14) is fixedly installed on one side of the flocculation chamber (1); the partition (3) is slidably installed at the bottom of the flocculation chamber (1); the filter screen (4) is fixedly installed below the partition (3); the first collection bucket (5) is fixedly installed on the left side of the flocculation chamber (1); the inlet of the circulation pump (7) is located at the upper right of the flocculation chamber (1), and the outlet is located at the lower left of the flocculation chamber (1). The bottom of the flocculation chamber (1) is symmetrically equipped with guide rails (8); a rack (81) is fixedly installed inside the guide rails (8); gears (82) are symmetrically installed on both sides of the partition (3), and the gears (82) mesh with the rack (81); a rotating shaft (83) is fixedly installed between the gears (82); a moving motor (84) is fixedly installed inside the partition (3), and the output shaft of the moving motor (84) is fixedly connected to the rotating shaft (83).

2. The industrial wastewater flocculation treatment unit according to claim 1, characterized in that: The first turbulence hole (61) and the second turbulence hole (62) are arranged vertically in a long strip shape.

3. The industrial wastewater flocculation treatment unit according to claim 2, characterized in that: The turbulence plate (6) is integrally cast by sand casting.

4. The industrial wastewater flocculation treatment unit according to claim 1, characterized in that: A hollow rod (11) is fixedly installed inside the flocculation chamber (1); a float (12) is slidably installed inside the hollow rod (11); and induction plates (13) are fixedly installed at both ends of the hollow rod (11).

Images