High-efficiency flocculation and precipitation equipment for seaweed bed sewage purification

Abstract

The present application relates to sewage purification technical field, specifically, it relates to high-efficiency flocculation and precipitation equipment for seaweed bed sewage purification, including silt hopper, connecting cylinder and precipitation device, the bottom of silt hopper is fixedly connected with discharge valve, the outside of silt hopper is fixedly connected with multiple support rods, the precipitation device is arranged at the top of silt hopper, the precipitation device includes multiple sleeves that are coaxially stacked and fixedly connected along the vertical direction, the top of silt hopper is fixedly connected with the bottom of the sleeve close to it, the connecting cylinder is located directly above the sleeve, the bottom of connecting cylinder is fixedly connected with the top of the sleeve close to it, the inside of multiple sleeves is rotatably connected with baffles, the outer wall of baffle is fixedly connected with two rotating columns, multiple-stage baffling and precipitation channels are formed by multiple-stage sleeves that are coaxially stacked and rotatable baffles, effectively prolonging the flow path and sedimentation time of sewage, improving the sedimentation and separation efficiency of silt and flocculation suspended matter.

Description

Technical Field

[0001] This invention relates to the field of wastewater purification technology, and more specifically, to a high-efficiency flocculation and sedimentation device for purifying wastewater from seagrass beds. Background Technology

[0002] Wastewater treatment refers to the engineering technology and management process that uses physical, chemical, biological, and combined processes to purify polluted water bodies such as domestic sewage, industrial wastewater, and urban runoff, removing pollutants such as suspended solids, organic matter, nitrogen and phosphorus nutrients, heavy metals, pathogens, and toxic and harmful substances, so that the effluent quality meets national or local discharge standards or the requirements for reuse.

[0003] According to existing technology, in order to protect seagrass beds, wastewater filtration equipment is used to filter polluted water. The nearshore wastewater of seagrass beds has a high sand content and suspended solids concentration, and the area is highly ecologically sensitive. Wastewater leakage and excessive addition of chemicals are strictly prohibited. Conventional sedimentation equipment has short flow channels and insufficient sedimentation, resulting in poor separation of silt and flocs. Since most of the flow guiding components have fixed angles, they cannot adapt to fluctuations in water quality and flow rate, which can easily lead to water flow short-circuiting and sedimentation failure. Summary of the Invention

[0004] This invention provides a high-efficiency flocculation and sedimentation device for purifying wastewater from seagrass beds. It consists of a multi-stage baffle sedimentation channel formed by vertically coaxially stacked multi-stage sleeves and rotatable baffles, which effectively extends the wastewater flow path and settling time, and improves the settling and separation efficiency of silt and flocculated suspended solids. This solves the problems mentioned in the background art, namely: since most of the flow guiding components have fixed angles, they cannot adapt to fluctuations in water quality and flow rate, and are prone to water flow short-circuiting and sedimentation failure.

[0005] To achieve the above objectives, this high-efficiency flocculation and sedimentation equipment for purifying seagrass bed wastewater includes a sludge hopper, a connecting cylinder, and a sedimentation device. A discharge valve is fixedly connected to the bottom of the sludge hopper, and multiple support rods are fixedly connected to the outside of the sludge hopper. The sedimentation device is located at the top of the sludge hopper and includes multiple sleeves stacked and fixedly connected coaxially in a vertical direction. The top of the sludge hopper and the bottom of adjacent sleeves are fixedly connected. The connecting cylinder is located directly above the sleeves, and its bottom and the top of adjacent sleeves are fixedly connected. Baffles are rotatably connected inside each of the multiple sleeves. Two rotating columns are fixedly connected to the outer wall of the baffles, and the outside of the rotating columns is rotatably connected to the inside of the sleeves. An outlet is provided on the outside of the baffles. The outside of the connecting cylinder is provided with a water collection device. The water collection device includes a water collection cylinder fixedly connected to the bottom of the connecting cylinder. A clean water pipe is fixedly connected to the outside of the water collection cylinder. A filter bag is inserted inside the water collection cylinder. The water collection device is used to collect the liquid that seeps out of the connecting cylinder, filter the liquid through the filter bag, and discharge the filtered clean water through the clean water pipe. The outside of the connecting cylinder is provided with a mixing device, which includes a mixing cylinder fixedly connected to the outside of the connecting cylinder. The top of the mixing cylinder is fixedly connected with a feed pipe for adding flocculant into the mixing cylinder.

[0006] In the above technical solution, a fixed cylinder is fixedly connected to the outside of the sleeve near the rotating column. The inside of the fixed cylinder is rotatably connected to the outside of the rotating column. The inside of the fixed cylinder is threaded with two threaded posts, which are located on the radial sides of the rotating column respectively. A clamping ring is fixedly connected to the threaded post near the rotating column. A fixed ring is fixedly connected to the outside of the rotating column. The clamping ring is sleeved on the outside of the fixed ring. Multiple anti-slip strips are fixedly connected to the outside of the fixed ring. The inside of the sleeve has an arc surface. When the baffle plate rotates, the outside of the baffle plate cooperates with the arc surface and rotates along the arc surface.

[0007] Secondly, a water collection tank is provided inside the water collection cylinder, and the water collection tank is connected to the clean water pipe. After the liquid is collected in the water collection tank, it is discharged through the clean water pipe. An installation ring is provided inside the water collection cylinder, and a frame is fixedly connected to the top of the filter bag. The installation ring, the frame and the inside of the water collection cylinder are connected by installation bolts. A sealing cap is fixedly connected to the top of the water collection cylinder. The filter bag is a polypropylene bag. When the liquid overflows from the inner wall of the water collection cylinder, the liquid falls into the filter bag for filtration.

[0008] Furthermore, based on the above, a connector is fixedly connected to the end of the mixing cylinder away from the connecting cylinder, and a swirl vane is fixedly connected inside the mixing cylinder to generate swirl in the liquid. The swirl vane is made of stainless steel and is arranged along the axial direction of the mixing cylinder. A flow channel is opened inside the feed pipe and is connected to the inside of the mixing cylinder to smoothly transport the flocculant into the mixing cylinder to mix with the sewage.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: This high-efficiency flocculation and sedimentation equipment for seagrass bed wastewater purification utilizes a multi-stage baffle sedimentation channel formed by vertically coaxially stacked multi-stage sleeves and rotatable baffles. This effectively extends the wastewater flow path and settling time, improving the settling and separation efficiency of silt and flocculated suspended solids. The baffles, in conjunction with rotating columns, fixed cylinders, threaded columns, clamping rings, and fixed rings with anti-slip strips, allow for flexible angle adjustment and reliable locking. The arc-shaped inner wall of the sleeves provides smooth rotation guidance, further extending the water flow path and settling time. The water collection device, through the combination of a water collection cylinder, water collection tank, polypropylene filter bag, and sealing cap, can orderly discharge the filtered clean water through a clean water pipe. The mixing device, through a mixing cylinder with swirl vanes and a feed pipe with a dedicated flow channel, ensures the stable addition of flocculant and its thorough mixing with the wastewater through a swirling flow, enhancing the flocculation reaction efficiency. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the sleeve in this invention; Figure 3 This is a side view of the connecting cylinder in this invention. Figure 4 This is an enlarged structural diagram of point A in the present invention; Figure 5 This is a side view of the water collection cylinder in this invention. Figure 6 This is a cross-sectional view of the water collection cylinder in this invention.

[0011] The meanings of the labels in the diagram are as follows: 1. Sediment hopper; 2. Sedimentation device; 21. Sleeve; 22. Rotating column; 23. Baffle plate; 24. Outlet; 25. Fixed cylinder; 26. Threaded column; 27. Clamping ring; 28. Fixing ring; 29. ​​Anti-slip strip; 3. Connecting cylinder; 4. Water collection device; 41. Water collection cylinder; 42. Clean water pipe; 43. Water collection trough; 44. Sealing cover; 45. Frame; 46. Filter bag; 47. Mounting ring; 48. Mounting bolt; 5. Mixing device; 51. Mixing cylinder; 52. Connector; 53. Swirl vane; 54. Feed pipe; 55. Flow channel; 6. Discharge valve; 7. Support rod. Detailed Implementation

[0012] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0013] Since most of the flow guiding components have a fixed angle, they cannot adapt to fluctuations in water quality and flow rate, which can easily lead to problems such as short circuits in water flow and sedimentation failure.

[0014] Therefore, in view of the above-mentioned problems, the present invention provides a high-efficiency flocculation and sedimentation device for the purification of wastewater from seagrass beds, with reference to... Figure 1 and Figure 2As shown, the device includes a sludge hopper 1, a connecting cylinder 3, and a sedimentation device 2. A discharge valve 6 is fixedly connected to the bottom of the sludge hopper 1, which can promptly discharge the sludge and flocculated sediment that have settled to the bottom of the sludge hopper 1. Multiple support rods 7 are fixedly connected to the outside of the sludge hopper 1. The sedimentation device 2 is set on the top of the sludge hopper 1. The sedimentation device 2 includes multiple sleeves 21 that are stacked and fixedly connected along the vertical coaxial direction. The vertical coaxial stacking structure forms a multi-stage baffle sedimentation channel, which effectively extends the residence path and settling time of sewage in the equipment, allowing sludge and flocculated matter to fully achieve gravity settling, improving the removal efficiency of sludge and suspended solids, and meeting the purification needs of high-sand-content sewage around seagrass beds. The top of the mud and sand hopper 1 is fixedly connected to the bottom of the sleeve 21, and the connecting cylinder 3 is located directly above the sleeve 21. The bottom of the connecting cylinder 3 is fixedly connected to the top of the sleeve 21. The integrated connection method makes the equipment structure compact and has strong integrity, reduces the floor space, and facilitates the compact layout and modular disassembly and maintenance of the seagrass bed area. Multiple sleeves 21 are rotatably connected to baffles 23 inside. Two rotating columns 22 are fixedly connected to the outer wall of the baffles 23. The outside of the rotating columns 22 is rotatably connected to the inside of the sleeves 21. The rotating structure allows for flexible adjustment of the angle of the baffles 23. It can flexibly adjust the flow cross section and water flow path according to changes in sewage flow rate and sand content, improve the adaptability of the equipment to different water quality and flow conditions, and avoid the impact of water quality fluctuations on the purification effect. The baffles 23 have an outlet 24 on the outside, which can guide the sewage to flow in an orderly manner along the baffles 23 step by step, further enhancing the sedimentation and separation efficiency of silt and flocculants.

[0015] Refer again Figure 2 As shown, a fixed cylinder 25 is fixedly connected to the outside of the sleeve 21 near the rotating column 22. The inside of the fixed cylinder 25 is rotatably connected to the outside of the rotating column 22. The inside of the fixed cylinder 25 is threaded with two threaded columns 26, which are located on the radial sides of the rotating column 22 respectively. The threaded connection allows for the adjustment of the threaded columns 26, and the positioning is reliable after adjustment. It can flexibly drive the clamping ring 27 to move according to the angle adjustment requirements of the baffle 23, thereby fixing the angle of the rotating column 22. This adapts to the baffle angle fixing requirements under different sewage flow and sediment content conditions. A clamping ring 27 is fixedly connected to the threaded column 26 near the rotating column 22. A fixing ring 28 is fixedly connected to the outside of the rotating column 22. The clamping ring 27 is sleeved on the outside of the fixing ring 28. Multiple anti-slip strips 29 are fixedly connected to the outside of the fixing ring 28, which can increase the frictional resistance between the clamping ring 27 and the fixing ring 28, prevent the clamping ring 27 and the fixing ring 28 from sliding relative to each other, and further improve the firmness of the angle locking of the baffle plate 23. The sleeve 21 has an arc surface inside. When the baffle 23 rotates, the outside of the baffle 23 matches the arc surface and rotates along the arc surface. The arc surface makes the baffle 23 rotate smoothly without jamming and has good sealing performance. This can reduce rotational resistance and prevent water from flowing out from the gap between the baffle 23 and the inner wall of the sleeve 21, ensuring that the sewage flows along the preset path.

[0016] refer to Figure 3 and Figure 4 As shown, a water collection device 4 is provided on the outside of the connecting cylinder 3. The water collection device 4 includes a water collection cylinder 41 fixedly connected to the bottom of the connecting cylinder 3. A clean water pipe 42 is fixedly connected to the outside of the water collection cylinder 41. The clean water pipe 42 enables the directional discharge of filtered clean water, which facilitates the standardized return of purified water to the seagrass bed area. A filter bag 46 is inserted inside the water collection cylinder 41. The water collection device 4 is used to collect the liquid seeping out of the connecting cylinder 3, filter the liquid through the filter bag 46, and discharge the filtered clean water through the clean water pipe 42. This simplifies the purification process, improves the efficiency of sewage treatment, effectively intercepts residual flocculants and fine suspended solids in the liquid, and further improves the quality of the effluent. The water collection cylinder 41 has a water collection tank 43 inside, which is connected to the clean water pipe 42. After the liquid is collected in the water collection tank 43, it is discharged through the clean water pipe 42. The water collection tank 43 can collect the filtered clean water. The water collection cylinder 41 has an installation ring 47 inside, and the top of the filter bag 46 is fixed to a frame 45. The installation ring 47, the frame 45 and the inside of the water collection cylinder 41 are connected by an installation bolt 48. The threaded connection is firm, which can not only ensure the stable installation of the filter bag 46 and avoid the filter bag 46 from shifting and falling off due to water flow impact, but also realize the quick disassembly and assembly of the filter bag 46, which is convenient for regularly cleaning the impurities trapped by the filter bag 46 and replacing the damaged filter bag 46. A sealing cap 44 is fixedly connected to the top of the water collection cylinder 41, which effectively prevents external debris and seawater droplets from entering the interior of the water collection cylinder 41, avoiding contamination of the filter bag 46 and the liquid to be filtered by impurities, while ensuring the airtightness of the interior of the water collection cylinder 41. The filter bag 46 is a polypropylene bag. When the liquid overflows from the inner wall of the water collection cylinder 41, the liquid falls into the filter bag 46 for filtration.

[0017] refer to Figure 5 and Figure 6As shown, a mixing device 5 is provided on the outside of the connecting cylinder 3. The mixing device 5 includes a mixing cylinder 51 fixedly connected to the outside of the connecting cylinder 3. A feed pipe 54 is fixedly connected to the top of the mixing cylinder 51 for adding flocculant into the mixing cylinder 51, so as to realize the fixed and centralized addition of flocculant and avoid the dispersion and waste of the agent. A connector 52 is fixedly connected to the end of the mixing cylinder 51 away from the connecting cylinder 3, so as to facilitate quick sealing and connection with the external water inlet pipe. A swirl vane 53 is fixedly connected inside the mixing cylinder 51 for generating swirling flow in the liquid. The swirling flow disturbance greatly improves the mixing uniformity of sewage and flocculant, shortens the reaction time, promotes the rapid formation of flocs, and lays the foundation for subsequent sedimentation and separation. The swirl vane 53 is made of stainless steel and is arranged along the axial direction of the mixing cylinder 51. It can form a continuous and stable axial swirling flow, with uniform water flow disturbance and small hydraulic loss, without affecting the overall water flow capacity of the equipment. The feed pipe 54 has a flow channel 55 inside, which is connected to the inside of the mixing cylinder 51. It is used to smoothly transport the flocculant into the mixing cylinder 51 to mix with the sewage.

[0018] Working principle of the invention: When the equipment is working, it connects to the external water inlet pipe through the connector 52 to introduce the sandy sewage around the seagrass bed into the mixing cylinder 51; at the same time, the flocculant is transported to the mixing cylinder 51 through the flow channel 55 inside the feed pipe 54. The sewage generates a stable axial swirling flow under the action of the swirl vane 53, and the sewage and flocculant are mixed.

[0019] After mixing and flocculation, the wastewater enters the connecting cylinder 3 through the connection between the mixing cylinder 51 and the connecting cylinder 3, and then flows from the connecting cylinder 3 into the sedimentation device 2 composed of coaxially stacked sleeves 21 below. The angle is adjusted by rotating the rotating column 22 and the fixed cylinder 25. After adjustment, the threaded column 26 inside the fixed cylinder 25 is rotated, driving the clamping ring 27 to press the anti-slip strip 29 on the outer fixed ring 28 of the rotating column 22, thus reliably locking the angle of the baffle plate 23. At the same time, the baffle plate 23 moves smoothly along the arc surface of the inner wall of the sleeve 21 when it rotates. The wastewater flows downwards step by step along the outlet 24 of the baffle plate 23, causing the silt and flocs in the wastewater to gradually settle under the action of gravity. The settled silt and flocs continue to slide downwards and eventually flow into the silt hopper 1 at the bottom.

[0020] During the wastewater diversion and sedimentation process, the liquid overflows along the inner wall of the water collection cylinder 41 and falls naturally into the polypropylene filter bag 46 inserted inside. The filter bag 46 is fixed by the frame 45, the mounting ring 47 and the mounting bolt 48. The sealing cover 44 at the top of the water collection cylinder 41 prevents external debris from entering. The filtered clean water flows into the water collection tank 43 inside the water collection cylinder 41 and is then discharged in a directional manner through the clean water pipe 42 connected to the water collection tank 43.

[0021] During continuous operation of the equipment, the sediment and flocs that settle to the bottom of the sediment hopper 1 are periodically discharged through the discharge valve 6; multiple support rods 7 on the outside of the sediment hopper 1 provide stable support for the entire equipment.

[0022] 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 preferred examples and are not intended to limit 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. A high-efficiency flocculation and sedimentation device for purifying wastewater from seagrass beds, comprising a sediment hopper (1), a connecting cylinder (3), and a sedimentation device (2), characterized in that: The bottom of the silt hopper (1) is fixedly connected to a discharge valve (6), and the outside of the silt hopper (1) is fixedly connected to multiple support rods (7). The sedimentation device (2) is set on the top of the silt hopper (1). The sedimentation device (2) includes multiple sleeves (21) stacked and fixedly connected along the vertical axis. The top of the silt hopper (1) and the bottom of the sleeves (21) are fixedly connected. The connecting cylinder (3) is located directly above the sleeves (21). The bottom of the connecting cylinder (3) and the top of the sleeves (21) are fixedly connected. The inside of each of the multiple sleeves (21) is rotatably connected to a baffle plate (23). The outer wall of the baffle plate (23) is fixedly connected to two rotating columns (22). The outside of the rotating columns (22) is rotatably connected to the inside of the sleeves (21). The outside of the baffle plate (23) is provided with an outlet (24). The outside of the connecting cylinder (3) is provided with a water collection device (4). The water collection device (4) includes a water collection cylinder (41) fixedly connected to the bottom of the connecting cylinder (3). A clean water pipe (42) is fixedly connected to the outside of the water collection cylinder (41). A filter bag (46) is inserted inside the water collection cylinder (41). The water collection device (4) is used to collect the liquid that seeps out of the connecting cylinder (3), filter the liquid through the filter bag (46), and discharge the filtered clean water through the clean water pipe (42). The outside of the connecting cylinder (3) is provided with a mixing device (5), the mixing device (5) includes a mixing cylinder (51) fixedly connected to the outside of the connecting cylinder (3), and a feed pipe (54) is fixedly connected to the top of the mixing cylinder (51) for adding flocculant into the mixing cylinder (51).

2. The high-efficiency flocculation and sedimentation equipment for purifying seagrass bed wastewater according to claim 1, characterized in that: A fixed sleeve (25) is fixedly connected to the outside of the sleeve (21) near the rotating column (22). The inside of the fixed sleeve (25) is rotatably connected to the outside of the rotating column (22). The inside of the fixed sleeve (25) is threaded with two threaded columns (26), which are located on the radial sides of the rotating column (22).

3. The high-efficiency flocculation and sedimentation equipment for purifying seagrass bed wastewater according to claim 2, characterized in that: A clamping ring (27) is fixedly connected to the threaded post (26) near the rotating post (22), and a fixing ring (28) is fixedly connected to the outside of the rotating post (22). The clamping ring (27) is sleeved on the outside of the fixing ring (28).

4. The high-efficiency flocculation and sedimentation equipment for purifying seagrass bed wastewater according to claim 3, characterized in that: The fixed ring (28) is fixedly connected to a number of anti-slip strips (29), and the sleeve (21) has an arc surface inside. When the baffle (23) rotates, the outside of the baffle (23) cooperates with the arc surface and rotates along the arc surface.

5. The high-efficiency flocculation and sedimentation equipment for purifying seagrass bed wastewater according to claim 1, characterized in that: The water collection cylinder (41) is provided with a water collection tank (43), which is connected to the clean water pipe (42). The liquid is collected in the water collection tank (43) and then discharged through the clean water pipe (42).

6. The high-efficiency flocculation and sedimentation equipment for purifying seagrass bed wastewater according to claim 5, characterized in that: The water collection cylinder (41) is provided with an installation ring (47) inside, and a frame (45) is fixed to the top of the filter bag (46). The installation ring (47), the frame (45) and the water collection cylinder (41) are connected by an installation bolt (48) with internal threads.

7. The high-efficiency flocculation and sedimentation equipment for purifying seagrass bed wastewater according to claim 6, characterized in that: The top of the water collection cylinder (41) is fixedly connected to a sealing cap (44), and the filter bag (46) is a polypropylene bag. When the liquid overflows from the inner wall of the water collection cylinder (41), the liquid falls into the filter bag (46) for filtration.

8. The high-efficiency flocculation and sedimentation equipment for purifying seagrass bed wastewater according to claim 1, characterized in that: The mixing cylinder (51) is fixedly connected to a connector (52) at one end away from the connecting cylinder (3), and a swirl vane (53) is fixedly connected inside the mixing cylinder (51) to generate swirl in the liquid.

9. The high-efficiency flocculation and sedimentation equipment for purifying seagrass bed wastewater according to claim 8, characterized in that: The swirl vane (53) is made of stainless steel and is arranged along the axial direction of the mixing cylinder (51).

10. The high-efficiency flocculation and sedimentation equipment for purifying seagrass bed wastewater according to claim 1, characterized in that: The feed pipe (54) has a flow channel (55) inside, which is connected to the inside of the mixing cylinder (51) to steadily transport the flocculant into the mixing cylinder (51) and mix it with the sewage.

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