Coagulation reaction sedimentation tank

Abstract

The utility model relates to a coagulation reaction sedimentation tank, and relates to the technical field of water treatment equipment, in order to solve the problem that the sedimentation tank is muddy due to sewage impact force, the coagulation reaction sedimentation tank comprises a tank body, the tank body is internally provided with a sewage collection area, a sludge storage area and a separation area, and the sewage collection area, the sludge storage area and the separation area are communicated in sequence; a flocculation mechanism and a stirring mechanism are arranged in the sewage collection area, a buffer mechanism used for buffering sewage is arranged in the sludge storage area, the buffer mechanism comprises a plurality of buffer guide plates, the buffer guide plates are sequentially arranged in a staggered mode in the height direction of the sludge storage area, any buffer guide plate is obliquely arranged in the sludge storage area, and the buffer guide plates are arranged in the sludge storage area in a staggered mode. A plurality of turbulent flow strips are arranged on the buffer flow guide plate, and are arranged on the buffer flow guide plate in a splayed manner. The sewage treatment device has the effects of effectively reducing the flow speed of sewage, reducing the impact force of the sewage for directly impacting deposited sediments at the bottom of the tank and improving the sedimentation efficiency.

Description

Technical Field

[0001] This application relates to the technical field of water treatment equipment, and particularly to a coagulation reaction sedimentation tank. Background Art

[0002] The coagulation reaction sedimentation tank is a key equipment in the water treatment field, with a long history and wide application. It mainly removes suspended solids and turbidity in sewage through processes such as the addition, mixing, and static settlement of coagulants, thereby improving water quality. The coagulation sedimentation process has been widely used in sewage treatment plants, industrial wastewater treatment, and municipal engineering fields due to its advantages of good effluent water quality, stable and reliable process operation, economic practicality, and simple operation.

[0003] In the related art, during the operation of the coagulation reaction sedimentation tank, due to the relatively large impact force of the sewage, this impact force is often sufficient to disturb the sediment deposited at the bottom of the tank, causing the sediment to resuspend and roll, thereby triggering the turbidity phenomenon in the sedimentation tank. This turbidity not only destroys the originally formed clear stratification but also significantly prolongs the time required for the sewage to achieve effective sedimentation, so it needs to be improved. Utility Model Content

[0004] In order to solve the problem of the turbidity of the sedimentation tank caused by the impact force of sewage, this application provides a coagulation reaction sedimentation tank.

[0005] The coagulation reaction sedimentation tank provided by this application adopts the following technical solutions:

[0006] A coagulation reaction sedimentation tank includes a tank body. A sewage collection area, a sludge storage area, and a separation area are arranged in the tank body. The sewage collection area, the sludge storage area, and the separation area are connected in sequence. A flocculation mechanism and a stirring mechanism are arranged in the sewage collection area. A buffer mechanism for buffering sewage is arranged in the sludge storage area. The buffer mechanism includes a number of buffer guide plates, and the number of buffer guide plates are arranged alternately along the height direction of the sludge storage area. Any one of the buffer guide plates is inclined in the sludge storage area. A number of flow disturbing strips are arranged on the buffer guide plate, and the number of flow disturbing strips are arranged in a shape of an eight on the buffer guide plate.

[0007] Due to the relatively large impact force of the sewage, this impact force is often sufficient to disturb the sediment that has already settled at the bottom of the pool, causing the sediment to resuspend and roll, thereby triggering the turbidity phenomenon in the sedimentation tank. This turbidity not only destroys the originally formed clear stratification but also significantly prolongs the time required for the sewage to achieve effective sedimentation. By adopting the above technical solution, including a pool body, a sewage collection area, a sludge storage area, and a separation area are arranged in the pool body. A flocculation mechanism and a stirring mechanism are installed in the sewage collection area, and a buffer mechanism is installed in the sludge storage area. The buffer mechanism is composed of several buffer guide plates, and several flow disturbance bars are welded on the buffer guide plates. When treating sewage, the sewage first enters the sewage collection area of the sedimentation tank through a pipeline. The sewage collection area is the starting part of the sewage treatment process and is responsible for receiving the incoming sewage. The flocculation mechanism and the stirring mechanism start to work. The flocculation mechanism adds chemical flocculants (such as polyaluminum chloride, polyacrylamide, etc.) to the sewage, enabling suspended particles, colloids, etc. in the sewage to form larger flocs through actions such as electro-neutralization and adsorption bridging. The stirring mechanism is responsible for evenly dispersing these flocculants into the sewage and promoting the full mixing of the sewage and the flocculants to accelerate the formation of flocs. The sewage after flocculation and stirring then flows into the sludge storage area. The buffer guide plates are arranged alternately along the height direction of the sludge storage area and are inclined to the sewage flow direction, effectively slowing down the flow rate of the sewage. At the same time, the flow disturbance bars on the buffer guide plates (arranged in a V shape) enhance the turbulent flow effect of the sewage, promoting the more complete separation of the flocs in the sewage from the water body. As the sewage stays in the sludge storage area, the flocs gradually settle to the bottom of the pool, forming a sludge layer, and the clear water gradually rises and enters the subsequent purification or discharge system through the separation area. Through the setting of the buffer mechanism, etc., the flow rate of the sewage can be effectively slowed down, the impact force of the sewage directly impacting the sediment deposited at the bottom of the pool is reduced, and the phenomenon of sediment resuspension and rolling caused by too fast sewage flow rate and too strong impact force is avoided, thereby reducing the occurrence of turbidity phenomenon, improving the sedimentation efficiency. At the same time, the flow disturbance bars further promote the separation of the flocs in the sewage from the water body by increasing the turbulent flow effect of the sewage. Turbulent flow helps to break the laminar flow state in the water body, making it easier for the flocs to precipitate out of the water body and settle to the bottom of the pool, significantly reducing its suspended matter content and significantly improving the water quality.

[0008] Optionally, several ear-shaped mounting seats are arranged on the inner wall of the sludge storage area. Two of the ear-shaped mounting seats form a group, and the buffer guide plate is connected between the two ear-shaped mounting seats.

[0009] By adopting the above technical solution, the buffer guide plate is installed on the inner wall of the sludge storage area through the ear-shaped mounting seats. Through the setting of the ear-shaped mounting seats, it can be ensured that the buffer guide plate is not easily loosened or detached after installation, thereby ensuring the stability and reliability of the entire system. At the same time, it is convenient for replacement and maintenance, reducing the difficulty and time of maintenance work and improving the maintenance efficiency.

[0010] Optionally, any of the ear-shaped mounting seats is provided with a straight portion, and a fixing screw for fixing is provided on the straight portion.

[0011] By adopting the above technical solution, the straight portion is integrally formed on the ear-shaped mounting seat and fixed by fixing screws; through the arrangement of the straight portion and the fixing screws, the straight portion, as a key component of the ear-shaped mounting seat, is in close contact with the inner wall of the mud storage area, providing a stable supporting foundation, ensuring the stability and reliability of the buffer guide plate after installation, and reducing its loosening or falling off due to uneven force during operation.

[0012] Optionally, an oblique support rib is arranged between the two ear-shaped mounting seats corresponding to the buffer guide plate, a hinge shaft is arranged on the oblique support rib, both ends of the hinge shaft are respectively hinged on the two ear-shaped mounting seats, and the buffer guide plate is arranged at the inclined end of the oblique support rib.

[0013] By adopting the above technical scheme, the diagonal support ribs are hingedly mounted on the ear-shaped mounting seat through the hinge shaft, and the buffer guide plate is arranged at the inclined end of the diagonal support ribs; through the setting of the diagonal support ribs and the hinge shaft, the hinge shaft allows the buffer guide plate to adjust its angle and position within a certain range, and the buffer guide plate can adjust its inclination angle and position according to actual needs to better adapt to sewage with different flow rates and flow rates and improve the sedimentation effect.

[0014] Optionally, a retention filter plate for deep filtration is provided in the separation zone, and a plurality of filter holes are penetrated through the retention filter plate.

[0015] By adopting the above technical solution, the retention filter plate is installed on the separation area, and a plurality of filter holes are opened on the retention filter plate; through the setting of the retention filter plate and the filter holes, the tiny particles, suspended matter, bacteria, viruses and other impurities remaining in the sewage can be further removed, and the water quality of the effluent can be improved, so that the water flow can be fully filtered when passing through, and the impurities are retained on the surface or inside of the filter plate, thereby achieving the effect of deep purification and improving the filtration efficiency.

[0016] Optionally, the flocculation mechanism includes a flocculation reaction box, a water supply pipe and a water stop valve, the flocculation reaction box is connected to the pool body, one end of the water supply pipe is connected to the flocculation reaction box, the other end of the water supply pipe is connected to the sewage collection area, and the water stop valve is connected to the water supply pipe.

[0017] By adopting the above technical solution, the flocculation mechanism includes a flocculation reaction tank, a water supply pipe and a water stop valve; when treating sewage, the sewage first enters the sewage collection area of the sedimentation tank through a pipeline. The sewage collection area is the starting part of the sewage treatment process and is responsible for receiving the incoming sewage. The flocculation mechanism starts to work. The water stop valve is opened, and the chemical flocculants (such as polyaluminum chloride, polyacrylamide, etc.) in the flocculation reaction tank enter the sewage through the water supply pipe, causing the suspended particles, colloids, etc. in the sewage to form larger flocs through actions such as electro-neutralization and adsorption bridging; through the settings of the flocculation reaction tank, the water supply pipe and the water stop valve, physical and chemical reactions can occur with pollutants such as suspended particles and colloids in the sewage, improving the removal efficiency of suspended solids in the sewage, enhancing the sedimentation effect, greatly reducing the content of suspended solids in the effluent, and improving the effluent quality.

[0018] Optionally, the stirring mechanism includes a stirring support, a stirring motor and a stirring rod. The stirring support is connected to the top of the sewage collection area. The stirring motor is arranged on the stirring support. The stirring rod is connected to the output end of the stirring motor, and the stirring rod is vertically arranged in the sewage collection area.

[0019] By adopting the above technical solution, the stirring mechanism includes a stirring support, a stirring motor and a stirring rod; when treating sewage, after the flocculation mechanism works, the stirring motor is started. The stirring motor drives the stirring rod to rotate, evenly dispersing these flocculants into the sewage and promoting the full mixing of the sewage and the flocculants to accelerate the formation of flocs; through the setting of the stirring mechanism, it can ensure that the flocculants can fully contact pollutants such as suspended particles and colloids in the sewage, promote full mixing, and improve the sedimentation effect.

[0020] Optionally, a number of stirring arms are provided on the stirring rod, and the number of the stirring arms are arranged at intervals along the length of the stirring rod.

[0021] By adopting the above technical solution, a number of stirring arms are installed on the stirring rod; through the setting of the stirring arms, it helps to bring the suspended particles and colloids in the sewage to different positions in the stirring area, increasing the chance of collision and aggregation between them, accelerating the formation and sedimentation of flocs, and further improving the sewage treatment efficiency.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] Through the setting of a buffer mechanism and the like, the flow rate of sewage can be effectively slowed down, the impact force of sewage directly impacting the sediment deposited at the bottom of the pool is reduced, and the phenomenon of re-suspension and tumbling of the sediment caused by too fast sewage flow rate and too strong impact force is avoided. Thus, the occurrence of the turbidity phenomenon is reduced, the sedimentation efficiency is improved. At the same time, the turbulence bars further promote the separation between the flocs in the sewage and the water body by increasing the turbulence effect of the sewage. Turbulence helps to break the laminar flow state in the water body, making it easier for the flocs to precipitate out of the water body and settle to the bottom of the pool, significantly reducing the suspended matter content and significantly improving the water quality.

[0024] Through the setting of the flocculation reaction tank, the water supply pipe and the water stop valve, physical and chemical reactions can occur with pollutants such as suspended particles and colloids in the sewage, improving the removal efficiency of suspended solids in the sewage, enhancing the sedimentation effect, greatly reducing the suspended matter content in the effluent, and improving the effluent water quality.

[0025] Through the setting of the stirring mechanism, it can ensure that the flocculant can fully contact with pollutants such as suspended particles and colloids in the sewage, promote full mixing, and improve the sedimentation effect. Brief Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of a coagulation reaction sedimentation tank in an embodiment of the present application.

[0027] Figure 2 It is a cross-sectional view of a coagulation reaction sedimentation tank in an embodiment of the present application.

[0028] Figure 3 It is Figure 2 The enlarged view of part A in

[0029] Figure 4 It is a top view of a coagulation reaction sedimentation tank in an embodiment of the present application.

[0030] Description of the Reference Numerals: 1, pool body; 2, sewage collection area; 3, sludge storage area; 4, separation area; 5, flocculation mechanism; 51, flocculation reaction tank; 52, water supply pipe; 53, water stop valve; 6, stirring mechanism; 61, stirring support; 62, stirring motor; 63, stirring rod; 7, buffer mechanism; 71, buffer guide plate; 8, turbulence bars; 9, ear-shaped mounting seat; 91, flat part; 92, fixing screw; 10, inclined support rib; 11, hinge shaft; 12, intercepting filter plate; 121, filter holes; 13, stirring arm. Detailed Embodiment

[0031] The following further elaborates on the present application in conjunction with the attached Figures 1-4 drawings.

[0032] An embodiment of the present application discloses a coagulation reaction sedimentation tank. Refer to Figure 1, the coagulation reaction sedimentation tank includes a tank body 1. A sewage collection area 2, a sludge storage area 3, and a separation area 4 are provided in the tank body 1. In this embodiment, the sewage collection area 2, the sludge storage area 3, and the separation area 4 are all formed by opening chambers in the tank body 1. The sewage collection area 2, the sludge storage area 3, and the separation area 4 are connected in sequence through pipelines. At the same time, when the sewage is transported from the sewage collection area 2 to the sludge storage area 3 and from the sludge storage area 3 to the separation area 4, it is all transported from bottom to top. The tank body 1 can be equipped with a pump body for pumping sewage.

[0033] Refer to Figure 1 , a flocculation mechanism 5 and a stirring mechanism 6 are installed in the sewage collection area 2. In this embodiment, the flocculation mechanism 5 includes a flocculation reaction tank 51, a water supply pipe 52, and a stop valve 53. The flocculation reaction tank 51 is installed outside the tank body 1, and chemical flocculants (such as polyaluminum chloride, polyacrylamide, etc.) are stored in the flocculation reaction tank 51. One end of the water supply pipe 52 is connected to the inside of the flocculation reaction tank 51, and the other end of the water supply pipe 52 is arranged towards the inside of the sewage collection area 2. The stop valve 53 is installed on the water supply pipe 52, and the stop valve 53 is used to control the on-off of the water supply pipe 52. At the same time, the flocculation reaction tank 51 can be equipped with a pump body for pumping out chemical flocculants; it can physically and chemically react with pollutants such as suspended particles and colloids in the sewage, improving the removal efficiency of suspended solids in the sewage, enhancing the sedimentation effect, greatly reducing the content of suspended solids in the effluent, and improving the effluent quality.

[0034] Refer to Figure 1 and Figure 2 , the stirring mechanism 6 includes a stirring support 61, a stirring motor 62, and a stirring rod 63. The stirring support 61 is welded and fixed in the tank body 1. The stirring support 61 is located at the top of the sewage collection area 2. The stirring motor 62 is installed on the stirring support 61. The stirring rod 63 is vertically installed in the sewage collection area 2. The stirring rod 63 can be installed on the output end of the stirring motor 62 through a coupling. In this embodiment, the number of the stirring mechanisms 6 is multiple groups; it can ensure that the flocculant can fully contact with pollutants such as suspended particles and colloids in the sewage, promote full mixing, and improve the sedimentation effect.

[0035] Refer to Figure 1 and Figure 2 , a number of stirring arms 13 are installed on the stirring rod 63. The number of stirring arms 13 are installed at intervals along the length direction of the stirring rod 63, which helps to bring the suspended particles and colloids in the sewage to different positions in the stirring area, increasing the chance of collision and aggregation between them, accelerating the formation and sedimentation of flocs, and further improving the sewage treatment efficiency.

[0036] Refer to Figure 1 and Figure 2, a buffer mechanism 7 is installed in the sludge storage area 3. The buffer mechanism 7 includes a number of buffer guide plates 71, and the number of buffer guide plates 71 are arranged in a staggered manner in sequence along the height direction of the sludge storage area 3. Any buffer guide plate 71 is inclined and arranged in the sludge storage area 3. In this embodiment, the number of buffer guide plates 71 is four; the buffer guide plates 71 can effectively slow down the flow rate of the sewage, reduce the impact force of the sewage directly impacting the sediment deposited at the bottom of the pool, and avoid the phenomenon of the sediment resuspending and tumbling due to the too fast flow rate and too strong impact force of the sewage, thereby reducing the occurrence of the turbidity phenomenon.

[0037] Refer to Figure 2 and Figure 3 , a number of ear-shaped mounting seats 9 are installed on the inner wall of the sludge storage area 3. In this embodiment, two ear-shaped mounting seats 9 are taken as a group, and a single buffer guide plate 71 is installed between the two ear-shaped mounting seats 9. A flat part 91 is integrally formed on each ear-shaped mounting seat 9, and the flat part 91 is attached to the inner wall of the sludge storage area 3. A fixing screw 92 for fixing is installed on the flat part 91; the flat part 91, as a key component of the ear-shaped mounting seat 9, is in close contact with the inner wall of the sludge storage area 3, providing a stable support foundation, ensuring the stability and reliability of the buffer guide plate 71 after installation, and reducing the loosening or falling off of the buffer guide plate 71 during the working process due to uneven force.

[0038] Refer to Figure 2 and Figure 3 , a diagonal bracing rib block 10 is installed between the two ear-shaped mounting seats 9. A hinge shaft 11 is fixedly installed on the diagonal bracing rib block 10, and both ends of the hinge shaft 11 are respectively hinged to the two ear-shaped mounting seats 9. In this embodiment, one end of the diagonal bracing rib block 10 is a bevel end, and the buffer guide plate 71 is fixedly installed on the top of the diagonal bracing rib block 10, and the buffer guide plate 71 is located on the bevel end of the diagonal bracing rib block 10; the buffer guide plate 71 can adjust its inclination angle and position according to actual needs to better adapt to sewage with different flow rates and flow volumes, and improve the sedimentation effect.

[0039] Refer to Figure 4 , an intercepting filter plate 12 is installed in the separation area 4. The intercepting filter plate 12 is detachably installed on the inner wall of the separation area 4. A number of filter holes 121 are penetrated and opened on the intercepting filter plate 12, and the number of filter holes 121 are arranged in sequence on the intercepting filter plate 12; it can further remove impurities such as residual fine particles, suspended solids, bacteria, and viruses in the sewage, improve the effluent quality, enable the water flow to be fully filtered when passing through, intercept the impurities on the surface or inside of the filter plate, thereby achieving the effect of deep purification and improving the filtration efficiency.

[0040] The implementation principle of a coagulation reaction sedimentation tank in an embodiment of this application is as follows: When treating sewage, the sewage first enters the sewage collection area 2 of the sedimentation tank through a pipeline. The sewage collection area 2 is the starting part of the sewage treatment process and is responsible for receiving the incoming sewage. The flocculation mechanism 5 and the stirring mechanism 6 start to work. The flocculation mechanism 5 adds chemical flocculants (such as polyaluminum chloride, polyacrylamide, etc.) to the sewage, enabling suspended particles, colloids, etc. in the sewage to form larger flocs through actions such as electro-neutralization and adsorption bridging. The stirring mechanism 6 is responsible for evenly dispersing these flocculants into the sewage and promoting the full mixing of the sewage and the flocculants to accelerate the formation of flocs. The sewage after flocculation and stirring then flows into the sludge storage area 3. The buffer guide plates 71 are arranged alternately along the height direction of the sludge storage area 3 and are inclined to the sewage flow direction, effectively slowing down the flow rate of the sewage. At the same time, the turbulence bars 8 (arranged in a V shape) on the buffer guide plates 71 enhance the turbulence effect of the sewage, promoting the more complete separation of the flocs in the sewage from the water body. As the sewage stays in the sludge storage area 3, the flocs gradually settle to the bottom of the tank, forming a sludge layer, while the clear water gradually rises and enters the subsequent purification or discharge system through the separation area 4; through the setting of the buffer mechanism 7 and the like, the flow rate of the sewage can be effectively slowed down, the impact force of the sewage directly impacting the sediment deposited at the bottom of the tank is reduced, and the phenomenon of the sediment resuspending and tumbling due to too fast sewage flow rate and too strong impact force is avoided, thereby reducing the occurrence of the turbidity phenomenon and improving the sedimentation efficiency. At the same time, the turbulence bars 8 further promote the separation of the flocs in the sewage from the water body by increasing the turbulence effect of the sewage. Turbulence helps to break the laminar flow state in the water body, making it easier for the flocs to precipitate out of the water body and settle to the bottom of the tank, significantly reducing the suspended solid content and significantly improving the water quality.

[0041] The above are all the preferred embodiments of this application. Without restricting the protection scope of this application accordingly, therefore: All equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A coagulation reaction sedimentation tank, characterized in that: The invention comprises a tank body (1), wherein a sewage collecting area (2), a sludge storage area (3) and a separation area (4) are arranged in the tank body (1), wherein the sewage collecting area (2), the sludge storage area (3) and the separation area (4) are sequentially connected, wherein a flocculation mechanism (5) and a stirring mechanism (6) are arranged in the sewage collecting area (2), wherein a buffer mechanism (7) for buffering sewage is arranged in the sludge storage area (3), wherein the buffer mechanism (7) comprises a plurality of buffer guide plates (71), wherein the plurality of buffer guide plates (71) are sequentially arranged in an interlaced manner along the height direction of the sludge storage area (3), wherein any of the buffer guide plates (71) are arranged obliquely in the sludge storage area (3), and wherein a plurality of spoiler strips (8) are arranged in an "eight" shape on the buffer guide plate (71).

2. The coagulation reaction sedimentation tank according to claim 1, characterized in that: A plurality of ear-shaped mounting seats (9) are arranged on the inner wall of the mud storage area (3), two of the ear-shaped mounting seats (9) form a group, and the buffer guide plate (71) is connected between the two ear-shaped mounting seats (9).

3. The coagulation reaction sedimentation tank according to claim 2, characterized in that: Any of the ear-shaped mounting seats (9) is provided with a straight portion (91), and a fixing screw (92) for fixing is provided on the straight portion (91).

4. A coagulation reaction sedimentation tank according to claim 2, characterized in that: An oblique support rib (10) is arranged between the two ear-shaped mounting seats (9) corresponding to the buffer guide plate (71), and a hinge shaft (11) is arranged on the oblique support rib (10). The two ends of the hinge shaft (11) are respectively hingedly arranged on the two ear-shaped mounting seats (9), and the buffer guide plate (71) is arranged on the inclined surface end of the oblique support rib (10).

5. A coagulation reaction sedimentation tank according to claim 1, characterized in that: A retaining filter plate (12) for deep filtration is arranged in the separation zone (4), and a plurality of filter mesh holes (121) are formed through the retaining filter plate (12).

6. A coagulation reaction sedimentation tank according to claim 1, characterized in that: The flocculation mechanism (5) comprises a flocculation reaction box (51), a water supply pipe (52) and a water stop valve (53); the flocculation reaction box (51) is connected to the tank body (1); one end of the water supply pipe (52) is connected to the flocculation reaction box (51); the other end of the water supply pipe (52) is connected to the sewage collection area (2); and the water stop valve (53) is connected to the water supply pipe (52).

7. A coagulation reaction sedimentation tank according to claim 1, characterized in that: The stirring mechanism (6) comprises a stirring support (61), a stirring motor (62) and a stirring rod (63); the stirring support (61) is connected to the top of the dirt collecting area (2); the stirring motor (62) is arranged on the stirring support (61); the stirring rod (63) is connected to the output end of the stirring motor (62); and the stirring rod (63) is vertically arranged in the dirt collecting area (2).

8. A coagulation reaction sedimentation tank according to claim 7, characterized in that: A plurality of stirring arms (13) are arranged on the stirring rod (63), and the plurality of stirring arms (13) are sequentially spaced apart along the length of the stirring rod (63).

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