Grid flocculation sedimentation tank

Abstract

The invention discloses a grid flocculation sedimentation tank, and belongs to the technical field of flocculation sedimentation, the grid flocculation sedimentation tank comprises a flocculation sedimentation tank in bilateral symmetry distribution, the flocculation sedimentation tank comprises a reaction tank and a sedimentation tank in front-back distribution, a water inlet of the reaction tank is communicated with a water distribution tank, and a plurality of vertical walls in left-right alternate distribution are arranged in the reaction tank at equal intervals; a snakelike water channel is formed between the vertical wall and the inner side wall of the reaction tank, and a plurality of reactors which are alternately distributed up and down are arranged in the snakelike water channel; a plurality of inclined pipes for sedimentation are arranged in the sedimentation tank, and a sludge discharge ditch I and a sludge discharge ditch II are respectively arranged on the left and right sides of the reaction tank and the sedimentation tank. The grid flocculation sedimentation tank is high in efficiency, good in quality and convenient to clean.

Description

Technical Field

[0001] The invention relates to the technical field of flocculation and sedimentation, in particular to a grid flocculation and sedimentation tank. Background Art

[0002] At present, in the desalination treatment system, most of the purification equipment used in the pre-treatment designs the mixing, reaction, sedimentation and other processes into several different independent treatment units, resulting in a long flocculation and sedimentation cycle, and also increasing labor costs, equipment costs and maintenance costs. Based on this, the present invention proposes a grid flocculation sedimentation tank, which combines flocculation reaction and sedimentation to form a grid flocculation sedimentation tank, effectively improving the efficiency and quality of seawater desalination treatment. Summary of the invention

[0003] The purpose of the present invention is to provide a grid flocculation sedimentation tank to solve the above-mentioned problems.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention discloses a grid flocculation sedimentation tank, comprising a flocculation sedimentation tank symmetrically distributed on the left and right, the flocculation sedimentation tank comprising a reaction tank and a sedimentation tank distributed front and back, the water inlet of the reaction tank is connected to a water diversion tank, a plurality of vertical walls alternately distributed on the left and right are equidistantly arranged in the reaction tank, a serpentine water channel is formed between the vertical wall and the inner side wall of the reaction tank, and a plurality of reactors alternately distributed up and down are arranged in the serpentine water channel; A water inlet well is provided at the bottom of the reaction tank, and the water inlet well is connected with the sedimentation tank through a water inlet channel, and the water inlet channel is connected with the sedimentation tank through a plurality of through holes, and a plurality of water collecting tank support columns are equidistantly provided in the sedimentation tank, and a water collecting tank is provided on the upper end surface of the water collecting tank support column, and a sedimentation area is formed between adjacent water collecting tanks, and a water collecting tank connected with the water collecting tank is provided at the upper end of the water inlet channel, and a plurality of water holes connected with the water collecting tank are opened on the side wall of the water collecting tank, and a baffle matching the water hole is hingedly connected above the water hole, and the water collecting tank is connected with the filter tank through a clean water pipe; an inclined tube concrete support beam is provided between adjacent water collecting tank support columns, and an inclined tube installation grid is provided on the inclined tube concrete support beam, and an inclined tube is provided on the inclined tube installation grid, and the inclined tube is located in the sedimentation area; a plurality of cleaning pipes are provided between adjacent water collecting channels, and a water pump is provided on the cleaning pipe; A sludge drainage ditch 1 and a sludge drainage ditch 2 are respectively arranged on the left and right sides of the reaction tank and the sedimentation tank, and a plurality of perforated sludge collecting pipes 1 and 2 are symmetrically arranged on the bottom of the reaction tank and the sedimentation tank, and the opposite sides of the perforated sludge collecting pipes 1 and 2 are provided with blind covers, and the opposite back sides of the perforated sludge collecting pipes 1 and 2 are respectively connected to sludge pipe 1 and sludge pipe 2, and the outlet ends of the sludge pipe 1 and sludge pipe 2 are located above the sludge drainage ditch 1 and the sludge drainage ditch 2, and the sludge pipe 1 and the sludge pipe 2 are both provided with pneumatic sludge drainage angle valves, and the pneumatic sludge drainage angle valves are connected to the air pressure control pipeline system; the perforated sludge collecting pipe 2 located in the sedimentation tank passes through the sedimentation tank and the water inlet channel in sequence and then is connected to the sludge pipe 2.

[0005] Furthermore, the water distribution tank is connected to the water network requiring sedimentation treatment through a water inlet pipe.

[0006] Furthermore, the plurality of reactors alternately distributed up and down include folded plate reactors and cement plate reactors. The folded plate reactors are arranged at the front section and the middle section of the serpentine water channel, and the cement plate reactors are arranged at the rear section of the serpentine water channel.

[0007] Furthermore, the inclined tube is obliquely installed on the inclined tube installation grid, and a glass fiber reinforced plastic plate for support is provided in the gap between the inclined tube and the inclined tube installation grid.

[0008] Furthermore, the sludge discharge ditch 1 and the sludge discharge ditch 2 are connected to the sludge pool through the sludge discharge pipe 1 and the sludge discharge pipe 2 respectively.

[0009] Furthermore, the water collecting trough includes a trough body with an opening at the top, a plurality of overflow holes are equidistantly provided on the left and right side walls of the trough body, a cover plate is provided above the overflow holes, and both ends of the cover plate are fixedly connected to the inner wall of the trough body by riveting.

[0010] Furthermore, the air pressure control pipeline system includes a main air pressure pipeline, which is connected to a plurality of branch air pressure pipelines, and the branch air pressure pipelines are connected to the pneumatic mud discharge angle valve through pipelines. A stop valve 1 is arranged between the branch air pressure pipe and the main air pressure pipeline, and a stop valve 2 and a solenoid valve are arranged in sequence on the pipeline connecting the branch air pressure pipeline and the pneumatic mud discharge angle valve.

[0011] Furthermore, a walkway board 1 is arranged above the mud drainage ditch 1 and the mud drainage ditch 2 and at the front and rear ends of the reaction tank and the sedimentation tank, and the walkway board 1 is in a U-shaped structure; a walkway wall is arranged on the upper end surface of the water collection channel away from the sedimentation area, and a walkway board 2 is arranged on the walkway wall, and a walkway board 3 is arranged between the left and right walkway boards 2 and is distributed vertically with the walkway board 2.

[0012] Furthermore, walkway board 1, walkway board 2 and walkway board 3 are all higher than the upper plane of the reaction tank and the sedimentation tank, and guardrails are provided on both sides of walkway board 1, walkway board 2 and walkway board 3.

[0013] Furthermore, a fiberglass cover plate is provided on the upper end surface of the mud drainage ditch 1 and the mud drainage ditch 2.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are: The grid flocculation sedimentation tank of the invention completes the full mixing of flocculant and water in the reaction tank, produces a reaction, and then enters the sedimentation tank for static sedimentation. The precipitated sludge is discharged into the sludge discharge ditch, and the clean water is collected by the water collection tank and flows into the water collection channel, and then enters the filter tank for the next treatment process. In addition, when it is necessary to clean the sludge from the inclined pipe in the sedimentation tank, there is no need to connect an additional water source for cleaning. The water in the adjacent water collection channel can be moved over through the cleaning pipe, which saves time and effort and avoids waste of water resources. In short, the grid flocculation sedimentation tank of the present invention has high efficiency, good quality, and is easy to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 This is a structural diagram of a grid flocculation sedimentation tank of the present invention; Figure 2 It is a top view of the grid flocculation sedimentation tank of the present invention; Figure 3 It is a 40-40 cross-sectional view; Figure 4 It is the DD section diagram; Figure 5 It is a plan view of the top structure of the grid flocculation sedimentation tank of the present invention; Figure 6 This is a plan view of the bottom structure of the grid flocculation sedimentation tank of the present invention; Figure 7 It is the cross-sectional view of section 38-38; Figure 8 Installation structure diagram of the grid for inclined pipe installation; Fig. 9 It is a cross-sectional view of the water collection tank; Fig.10 It is the cross-sectional view of section 39-39; Fig.11 This is the gas pressure control piping system diagram; Fig.12 This is the solenoid valve installation structure diagram; Explanation of reference numerals: 1, water inlet pipe; 2, water distribution tank; 3, vertical wall; 4, folded plate reactor; 5, water inlet well; 6, water collection channel; 7, sedimentation area; 8, water collection tank; 9, sludge pipe 1; 10, mud drainage ditch 1; 11, mud drainage pipe 1; 12, clean water pipe; 13, mud drainage pipe 2; 14, mud drainage ditch 2; 15, walkway wall; 16, walkway board 1; 17, walkway board 2; 18, walkway board 3; 19, glass fiber reinforced plastic cover; 20, water inlet channel; 21, water collection tank support Support column; 22, inclined tube concrete support beam; 23, through hole; 24, sludge pipe 2; 25, inclined tube; 26, perforated mud collecting pipe 1; 27, perforated mud collecting pipe 2; 28, cover; 29, pneumatic mud discharge angle valve; 30, solenoid valve; 31, glass fiber reinforced plastic plate; 32, inclined tube installation grid; 33, stop valve 1; 34, stop valve 2; 35, cleaning pipe; 36, cement board reactor; 37, baffle; 38, flocculation sedimentation tank; 39, reaction tank; 40, sedimentation tank; 801. trough body; 802. overflow hole; 803. cover plate. DETAILED DESCRIPTION

[0017] like Figure 1-3 As shown, a grid flocculation sedimentation tank includes a flocculation sedimentation tank 38 symmetrically distributed on the left and right. The flocculation sedimentation tank 38 includes a reaction tank 39 and a sedimentation tank 40 distributed front and back. The water inlet of the reaction tank 39 is connected to the water distribution tank 2, and the water distribution tank 2 is connected to the water network to be precipitated through the water inlet pipe 1. A plurality of vertical walls 3 alternately distributed on the left and right are arranged equidistantly in the reaction tank 39. A serpentine water channel is formed between the vertical wall 3 and the inner wall of the reaction tank 39. A plurality of reactors (such as Figure 5-6 As shown). The reactors alternately distributed up and down include a folded plate reactor 4 and a cement plate reactor 36. The folded plate reactor 4 is installed in the front section and middle section of the serpentine water channel, and the cement plate reactor 36 is installed in the rear section of the serpentine water channel. Since the size of the reactor interval design of the sedimentation tank will directly affect the water flow state and flocculation effect, the design of the reactor should meet the following requirements: 1. Flocculation time: usually 12 to 20 minutes.

[0018] 2. The flow rate is reduced in stages: The speed during the flocculation process should be reduced step by step to adapt to the different stages of the flocculation reaction. The number of stages should not be less than three. The flow rate of each stage can be: the first stage: 0.25-0.35 m / s; the second stage: 0.15-0.25 m / s; the third stage: 0.10-0.15 m / s.

[0019] That is, the water flow rate is high in the initial stage to increase the particle collision flocculation time, and the water speed is reduced later to stabilize the flocs and prevent them from being broken up.

[0020] On this basis, in this embodiment, the number of vertical walls 3 is three, and the space in the reaction pool 39 is evenly divided into four water channels, among which the folded plate reactor 4 is installed in the first three water channels, and the cement board reactor 36 (such as Figure 3 As shown). The intervals between the folded plate reactors 4 in the first two sections of the water channel gradually increase, so that the water flow rate is large and the particle collision flocculation time is increased; the intervals between the folded plate reactors 4 in the second two sections of the water channel and the intervals between the cement plate reactors 36 are evenly distributed, in order to reduce the water flow rate and gradually stabilize the floccules so that they are not broken up.

[0021] The specific principle of the folded plate reactor 4 is: using the flow state change formed by the folded plate structure, the water flow generates strong turbulence and shear force between the folded plates, thereby promoting the collision, coagulation and sedimentation of suspended matter, colloids, bacteria and other particulate matter in the water. At the same time, by adding an appropriate amount of flocculant, the coagulation effect of the particulate matter is further improved, and the effective purification of the water quality is achieved. In this embodiment, the folded plate reactor 4, which is alternately distributed up and down, allows the water flow with the addition of flocculant and fully mixed to enter the sandwich channel that is tumbling up and down, and the scaling or turning formed between the folded plates causes the boundary layer separation phenomenon, and generates wall-attached turbulent energy consumption. The water flow in the vertical walls 3 and the reaction tank 39, which are alternately distributed left and right, will generate sufficient energy, increase the relative movement of particles inside the water flow, and collide with each other, effectively shorten the flocculation time, and improve the sedimentation performance of the flocculent body, so as to achieve the flocculation effect.

[0022] like Figure 2 , Figure 4 and Figure 5 As shown, a water inlet well 5 is provided at the bottom of the reaction tank 39, and the water inlet well 5 is connected to the sedimentation tank 40 through a water inlet channel 20, and the water inlet channel 20 is connected to the sedimentation tank 40 through a plurality of through holes 23, and the through holes 23 are provided on the side wall of the water inlet channel 20. A plurality of water collecting tank support columns 21 are equidistantly cast in the sedimentation tank 40, and a water collecting tank 8 is fixedly installed on the upper end surface of the water collecting tank support column 21, and a sedimentation area 7 is formed between adjacent water collecting tanks 8. The upper end of the water inlet channel 20 is provided with a water collecting channel 6 connected to the water collecting tank 8. The side wall of the water collecting channel 6 is provided with a plurality of water holes connected to the water collecting tank 8. The water holes are hingedly connected with a baffle 37 matching therewith. When there is no water flowing from the water collecting tank 8 to the water collecting channel 6, the baffle 37 blocks the water holes under its own gravity. When the water in the water collecting tank 8 flows to the water collecting channel 6, the baffle 37 opens below under the impact of the water flow, allowing the water to flow out smoothly. The water collecting channel 6 is connected to the filter tank through the clean water pipe 12.

[0023] like Figure 6-8As shown, an inclined tube concrete support beam 22 is cast between adjacent water collection tank support columns 21, an inclined tube concrete support beam 22 is fixedly installed with an inclined tube installation grid 32, and an inclined tube 25 is fixedly installed on the inclined tube installation grid 32, and the inclined tube 25 is located in the sedimentation area 7. The inclined tube 25 is obliquely installed on the inclined tube installation grid 32, and a glass fiber reinforced plastic plate 31 for support is installed in the gap between the inclined tube 25 and the inclined tube installation grid 32, so that the inclined tube 25 can maintain a certain inclination angle. In this embodiment, the main functions of the inclined tube 25 used are as follows: The main functions of the inclined tube include: First, increase the sedimentation area: the arrangement of the inclined tube 25 can greatly increase the effective sedimentation area of ​​the sedimentation tank 40, thereby improving the sedimentation efficiency; Second, shorten the sedimentation time: due to the increase of sedimentation area, solid-liquid separation can be achieved in a shorter time; Third, improve the sedimentation effect: make the water flow form a more stable laminar flow state in the inclined tube, reduce the turbulence of the water flow, facilitate the sedimentation of particles, and improve the quality of sedimentation; Fourth, improving the processing capacity: within the same floor space and processing time, more water can be processed, thereby enhancing the processing capacity of the sedimentation tank 40.

[0024] like Fig. 9 As shown, the water collection tank 8 includes a tank body 801 with an opening at the top, and a plurality of overflow holes 802 are equidistantly provided on the left and right side walls of the tank body 801. A cover plate 803 is fixedly installed above the overflow holes 802. Specifically, both ends of the cover plate 803 are fixedly connected to the inner side wall of the tank body 801 by riveting. The cover plate 803 plays a protective role, and the overflow holes 802 send clear water from the sedimentation area 7 to the water collection tank 8, and finally flow into the water collection channel 6.

[0025] like Figure 2 As shown, a plurality of cleaning pipes 35 are installed between adjacent water collecting channels 6, and a water pump is arranged on the cleaning pipes 35. Specifically, in the present embodiment, there are at least two cleaning pipes 35, which are respectively used to extract water from adjacent water collecting channels 6 and give it to each other, that is, when the left water collecting channel 6 needs water to flush the left inclined tube 25, the cleaning pipe 35 extracts the water in the right water collecting channel 6 into the left water collecting channel 6 through the water pump; when the right water collecting channel 6 needs water to flush the right inclined tube 25, the other cleaning pipe 35 extracts the water in the left water collecting channel 6 into the right water collecting channel 6 through the water pump. The specific cleaning process is as follows: When the inclined tube 25 in the sedimentation area 7 is covered with floccules and affects the collection of clean water in the water collection tank 8, the valve entering the reaction tank 39 is closed, and the water in the sedimentation tank 40 is emptied, and then the water pump is turned on to send the water in the water collection channel 6 in the sedimentation tank 40 on the other side that does not need to be cleaned into the water collection channel 6 in the sedimentation tank 40 that needs to be cleaned. The water level in the water collection channel 6 on the side that needs to be cleaned gradually rises. At this time, the worker can open the corresponding baffle 37 according to the water collection tank 8 that needs to be cleaned. Water will enter the water collection tank 8 and flow downward along the inclined tube 25. During the flow, the floccules on the inclined tube 25 will be washed away and cleaned; after cleaning, the corresponding baffle 37 is closed, and then the next baffle 37 is opened, and the operation is circulated in this way until all the inclined tubes 25 are cleaned. The above cleaning process not only saves time, but also can directly use the water in the water collection channel 6 to clean the sludge from each other, saving resources and improving efficiency.

[0026] like Figure 2 and Fig.10 As shown, the left and right sides of the reaction tank 39 and the sedimentation tank 40 are respectively provided with a sludge drain ditch 10 and a sludge drain ditch 2 14, and the upper end surfaces of the sludge drain ditch 10 and the sludge drain ditch 2 14 are both installed with a glass fiber reinforced plastic cover plate 19. The bottom of the reaction tank 39 and the sedimentation tank 40 are symmetrically installed with a plurality of perforated sludge collecting pipes 1 26 and perforated sludge collecting pipes 2 27, and the opposite surfaces of the perforated sludge collecting pipes 1 26 and the perforated sludge collecting pipes 2 27 are both fixedly installed with a cover 28, and the opposite back surfaces of the perforated sludge collecting pipes 1 26 and the perforated sludge collecting pipes 2 27 are respectively connected to the sludge pipe 1 9 and the sludge pipe 2 24. The sludge in the sedimentation tank 40 enters the sludge pipe 1 9 and the sludge pipe 2 24 through the perforated sludge collecting pipes 1 26 and the perforated sludge collecting pipes 2 27, and finally enters the sludge drain ditch 1 10 and the sludge drain ditch 2 14, thereby improving the sludge discharge efficiency and quality. The outlet ends of the sludge pipe 1 9 and the sludge pipe 2 24 are located above the sludge drain ditch 1 10 and the sludge drain ditch 2 14, and the sludge drain ditch 1 10 and the sludge drain ditch 2 14 are connected to the sludge tank through the sludge drain pipe 1 11 and the sludge drain pipe 2 13 respectively. The sludge pipe 1 9 and the sludge pipe 2 24 are both installed with a pneumatic sludge discharge angle valve 29, and the pneumatic sludge discharge angle valve 29 is connected to the air pressure control pipeline system. The perforated mud collecting pipe 2 27 located in the sedimentation tank 40 passes through the sedimentation tank 40 and the water inlet channel 20 in turn and is connected to the sludge pipe 2 24. The perforated mud collecting pipe 1 26 and the perforated mud collecting pipe 2 27 are both provided with a plurality of mud inlets, and the plurality of mud inlets on the perforated mud collecting pipe 2 27 located in the sedimentation tank 40 extend into the water inlet channel 20 in turn. The switch state of the mud inlet can be controlled by an electric control valve.

[0027] The specific sludge discharge process is as follows: The first solution: the mud inlets on the perforated mud collecting pipe 1 26 and the perforated mud collecting pipe 2 27 in the reaction tank 39 are in an open state, and the sludge at the bottom of the reaction tank 39 is discharged; The second solution: the mud inlets on the perforated mud collecting pipe 1 26 and the perforated mud collecting pipe 2 27 in the sedimentation tank 40 are in an open state, and the sludge at the bottom of the sedimentation tank 40 is discharged; The third solution: the mud inlets on the perforated mud collecting pipe 1 26 and the perforated mud collecting pipe 2 27 in the reaction tank 39 and the sedimentation tank 40 are opened, and the sludge at the bottom of the reaction tank 39 and the sedimentation tank 40 are discharged at the same time; The fourth solution: the mud inlet on the perforated mud collecting pipe 27 in the water inlet channel 20 is in an open state, and the sludge at the bottom of the water inlet channel 20 is discharged; The fifth solution: the mud inlet on the perforated mud collecting pipe 1 26 in the reaction tank 39 and the sedimentation tank 40 is in an open state, and the mud inlet on the perforated mud collecting pipe 2 27 in the reaction tank 39, the sedimentation tank 40 and the water inlet channel 20 is in an open state, and the sludge at the bottom of the reaction tank 39, the sedimentation tank 40 and the water inlet channel 20 is discharged at the same time.

[0028] like Figure 11-12 As shown, the air pressure control pipeline system includes a main air pressure pipeline, which is connected to a plurality of branch air pressure pipelines, and the branch air pressure pipeline is connected to the pneumatic mud discharge angle valve 29 through a pipeline, and a stop valve 1 33 is installed between the branch air pressure pipe and the main air pressure pipeline, and a stop valve 2 34 and a solenoid valve 30 are installed in sequence on the pipeline connecting the branch air pressure pipeline and the pneumatic mud discharge angle valve 29. Through the electronically controlled solenoid valve 30, the stop valve 1 33, and the stop valve 2 34, the electronically controlled rapid mud discharge operation is realized, and the mud discharge efficiency and quality are improved.

[0029] like Figure 2 As shown, a walkway board 16 is installed above the drainage ditch 10 and the drainage ditch 2 14 and at the front and rear ends of the reaction tank 39 and the sedimentation tank 40. The walkway board 16 is in a U-shaped structure. A walkway wall 15 is cast on the upper end surface of the water collection channel 6 away from the sedimentation area 7. A walkway board 2 17 is installed on the walkway wall 15. A walkway board 3 18 is installed between the left and right walkway boards 2 17 and is vertically distributed with the walkway board 2 17.

[0030] The walkway board 1 16 , walkway board 2 17 and walkway board 3 18 are all higher than the upper planes of the reaction tank 39 and the sedimentation tank 40 , and guardrails are installed on both sides of the walkway board 1 16 , walkway board 2 17 and walkway board 3 18 .

[0031] The flocculation and precipitation process of the present invention is as follows: First, the sewage enters the water distribution tank 2 from the water inlet pipe 1, and then enters the reaction tank 39, where a flocculant is added and a flocculation reaction is completed under the action of the folded plate reactor 4; then, the water after the reaction enters the water inlet channel 20 from the water inlet well 5, passes through the through hole 23, and completes precipitation on the inclined tube 25 in the sedimentation area 7; finally, the clean water after precipitation enters the water collection tank 8, and enters the water collection channel 6, and then enters the filter tank through the clean water pipe 12 for the next water treatment operation.

[0032] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A grid flocculation sedimentation tank, characterized in that: The flocculation sedimentation tank (38) comprises a symmetrically distributed flocculation sedimentation tank (38), wherein the flocculation sedimentation tank (38) comprises a reaction tank (39) and a sedimentation tank (40) which are distributed front and back, wherein the water inlet of the reaction tank (39) is connected to the water diversion tank (2), wherein a plurality of vertical walls (3) which are alternately distributed left and right are arranged at equal intervals in the reaction tank (39), wherein a serpentine water channel is formed between the vertical wall (3) and the inner wall of the reaction tank (39), wherein a plurality of reactors which are alternately distributed up and down are arranged in the serpentine water channel; A water inlet well (5) is provided at the bottom of the reaction tank (39). The water inlet well (5) is connected to the sedimentation tank (40) through a water inlet channel (20). The water inlet channel (20) is connected to the sedimentation tank (40) through a plurality of through holes (23). A plurality of water collecting trough support columns (21) are equidistantly provided in the sedimentation tank (40). A water collecting trough (8) is provided on the upper end surface of the water collecting trough support column (21). A sedimentation area (7) is formed between adjacent water collecting troughs (8). A water collecting channel (6) connected to the water collecting trough (8) is provided at the upper end of the water inlet channel (20). The side wall of the water collecting channel (6) is opened. A plurality of water holes connected to the water collecting trough (8) are provided, and a baffle (37) matching the baffle is hingedly connected above the water hole, and the water collecting channel (6) is connected to the filter tank through a clean water pipe (12); an inclined tube concrete support beam (22) is provided between adjacent water collecting trough support columns (21), an inclined tube installation grid (32) is provided on the inclined tube concrete support beam (22), an inclined tube (25) is provided on the inclined tube installation grid (32), and the inclined tube (25) is located in the sedimentation area (7); a plurality of cleaning pipes (35) are provided between adjacent water collecting channels (6), and a water pump is provided on the cleaning pipe (35); The reaction tank (39) and the sedimentation tank (40) are provided with a sludge drainage ditch 1 (10) and a sludge drainage ditch 2 (14) on the left and right sides, respectively. The bottoms of the reaction tank (39) and the sedimentation tank (40) are symmetrically provided with a plurality of perforated sludge collecting pipes 1 (26) and perforated sludge collecting pipes 2 (27). The opposite sides of the perforated sludge collecting pipes 1 (26) and the perforated sludge collecting pipes 2 (27) are provided with a cover (28). The opposite sides of the perforated sludge collecting pipes 1 (26) and the perforated sludge collecting pipes 2 (27) are connected to the sludge pipe 1 (9) and the sludge pipe 1 (9) respectively. Mud pipe 2 (24), the outlet ends of the sludge pipe 1 (9) and the sludge pipe 2 (24) are located above the sludge discharge ditch 1 (10) and the sludge discharge ditch 2 (14), and the sludge pipe 1 (9) and the sludge pipe 2 (24) are both provided with a pneumatic sludge discharge angle valve (29), and the pneumatic sludge discharge angle valve (29) is connected to the air pressure control pipeline system; the perforated mud collecting pipe 2 (27) located in the sedimentation tank (40) passes through the sedimentation tank (40) and the water inlet channel (20) in sequence and is then connected to the sludge pipe 2 (24).

2. The grid flocculation sedimentation tank according to claim 1, characterized in that: The water distribution pool (2) is connected to the water network that needs sedimentation treatment through the water inlet pipe (1).

3. The grid flocculation sedimentation tank according to claim 1, characterized in that: The plurality of reactors alternately distributed up and down include folded plate reactors (4) and cement plate reactors (36); the folded plate reactors (4) are arranged at the front section and the middle section of the serpentine water channel; and the cement plate reactors (36) are arranged at the rear section of the serpentine water channel.

4. The grid flocculation sedimentation tank according to claim 1, characterized in that: The inclined tube (25) is installed obliquely on the inclined tube installation grid (32), and a glass fiber reinforced plastic plate (31) for support is provided in the gap between the inclined tube (25) and the inclined tube installation grid (32).

5. The grid flocculation sedimentation tank according to claim 1, characterized in that: The sludge discharge ditch 1 (10) and the sludge discharge ditch 2 (14) are connected to the sludge pool through the sludge discharge pipe 1 (11) and the sludge discharge pipe 2 (13) respectively.

6. The grid flocculation sedimentation tank according to claim 1, characterized in that: The water collecting trough (8) comprises a trough body (801) with an opening at the top, a plurality of overflow holes (802) being equidistantly provided on the left and right side walls of the trough body (801), a cover plate (803) being provided above the overflow holes (802), and two ends of the cover plate (803) being fixedly connected to the inner side wall of the trough body (801) by riveting.

7. The grid flocculation sedimentation tank according to claim 1, characterized in that: The air pressure control pipeline system comprises a main air pressure pipeline, the main air pressure pipeline is connected to a plurality of branch air pressure pipelines, the branch air pressure pipelines are connected to the pneumatic mud discharge angle valve (29) through pipelines, a stop valve 1 (33) is arranged between the branch air pressure pipe and the main air pressure pipeline, and a stop valve 2 (34) and a solenoid valve (30) are arranged in sequence on the pipeline connecting the branch air pressure pipeline and the pneumatic mud discharge angle valve (29).

8. The grid flocculation sedimentation tank according to claim 1, characterized in that: Walkway board one (16) is arranged above the mud drainage ditch one (10) and the mud drainage ditch two (14) and at the front and rear ends of the reaction tank (39) and the sedimentation tank (40), and the walkway board one (16) is in a U-shaped structure; a walkway wall (15) is arranged on the upper end surface of the water collection channel (6) away from the sedimentation area (7), and walkway board two (17) is arranged on the walkway wall (15), and walkway board three (18) is arranged between the left and right walkway boards two (17) and is distributed vertically with the walkway board two (17).

9. The grid flocculation sedimentation tank according to claim 8, characterized in that: The walkway board 1 (16), the walkway board 2 (17) and the walkway board 3 (18) are all higher than the upper plane of the reaction tank (39) and the sedimentation tank (40), and guardrails are provided on both sides of the walkway board 1 (16), the walkway board 2 (17) and the walkway board 3 (18).

10. The grid flocculation sedimentation tank according to claim 1, characterized in that: A glass fiber reinforced plastic cover plate (19) is provided on the upper end surface of the first mud drainage ditch (10) and the second mud drainage ditch (14).

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