High density cell for flocculation antisettling

Abstract

The utility model provides a high density pool for flocculation prevents settlement. The high density pool includes the reaction pool, flocculation pool, sedimentation tank and post mixing pool which are sequentially communicated according to water flow direction, is used for sequentially carrying out dosing reaction, flocculation, sedimentation and post mixing to inlet water, and exports outlet water, the first partition wall is arranged in the flocculation pool, and its top is fixed to the top of flocculation pool, and its bottom is suspended and forms water flow channel, and the flocculation pool is divided into flocculation area and plug flow area which are sequentially communicated according to water flow direction, the outlet baffle of plug flow area is provided with the through -wall hole area, the through -wall hole area is arranged in the upper portion of outlet baffle, the through -wall hole area is provided with the through -wall hole, the through -wall hole has at least 1 row, and each row has at least 2, and is arranged along the width direction of outlet baffle. The high density pool can significantly enhance flocculation function, and effectively solve the sludge deposition problem of plug flow area.

Description

Technical Field

[0001] This utility model belongs to the technical field of high-density water treatment tanks, specifically relating to high-density tanks used for flocculation and anti-sedimentation. Background Technology

[0002] During operation, conventional high-density sludge treatment tanks experience significant sludge buildup in the plug flow zone, leading to ineffective sludge deposition. Uneven water flow velocity and insufficient reaction time result in the accumulation of large amounts of unflocculated sludge. Traditional structures require extended reaction times to ensure effective flocculation, which also contributes to excessive sludge deposition in the plug flow zone. This excessive sludge deposition reduces treatment efficiency, increases sludge removal difficulty, severely impacts the stable operation of the high-density sludge tank, and increases maintenance costs due to the difficulty in sludge cleaning.

[0003] Currently, there are no reports of high-density pools that can solve the aforementioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a high-density tank for flocculation and anti-sedimentation, thereby solving at least one of the aforementioned technical problems and reducing sludge deposition in the plug flow zone.

[0005] To achieve the purpose of this utility model, the following technical solution is adopted: A high-density tank for flocculation and sedimentation prevention, the high-density tank comprising a reaction tank, a flocculation tank, a sedimentation tank and a post-mixing tank arranged sequentially in the direction of water flow, for sequentially performing chemical reaction, flocculation, sedimentation and post-mixing on the influent, and outputting effluent. The flocculation tank is equipped with a first partition wall, the top of which is fixed to the top of the flocculation tank and the bottom of which is suspended to form a water flow channel, dividing the flocculation tank into a flocculation zone and a push flow zone that are connected sequentially in the direction of water flow. The outlet baffle wall of the flow propulsion zone is provided with a through-wall hole area, which is located on the upper part of the outlet baffle wall; the through-wall hole area is provided with through-wall holes; The wall-penetrating holes are arranged in at least one row, with at least two holes in each row, along the width of the water outlet retaining wall.

[0006] This utility model is used for high-density tanks for flocculation and anti-settling. Preferably, the diameter of the through-wall hole is 50~200 mm.

[0007] This utility model is used for high-density tanks for flocculation and anti-settling. Preferably, the opening direction of the through hole is inclined downward at 5~20° along the water flow direction.

[0008] This utility model is used for a high-density flocculation and anti-settling tank. Preferably, the upper part of the through-wall hole area is provided with at least one row of through-wall holes, each row including at least 3 through-wall holes, and evenly arranged from the first end to the second end along the width direction of the outlet baffle wall; preferably, it includes 6 to 10 through-wall holes; and / or, At least one row of through-wall holes is provided in the middle of the through-wall hole area, each row including at least two through-wall holes, and they are evenly arranged at the first and second ends of the water outlet baffle wall along its width direction; preferably, it includes 4 to 6 through-wall holes; and / or, The lower part of the through-wall hole area is provided with at least one row of through-wall holes, each row including at least 2 through-wall holes, and evenly arranged at its first end and second end along the width direction of the water outlet baffle wall; preferably including 2 to 4 through-wall holes.

[0009] This utility model relates to a high-density flocculation and sedimentation prevention tank. Preferably, the through-wall holes are arranged in at least two rows, with at least two holes in each row, along the width of the outlet baffle wall. The through-wall holes in adjacent rows are arranged in an alternating pattern; and / or, The spacing between adjacent through holes in each row is 5 to 10 times the hole diameter.

[0010] This utility model is used for a high-density tank for flocculation and anti-settling. Preferably, an aeration pipe is inserted into the flow zone, the aeration pipe is provided with aeration holes, and its air inlet end is connected to a compressed air pipeline for introducing compressed air to aerate the flow zone.

[0011] This utility model is used for high-density tanks for flocculation and anti-settling. Preferably, the diameter of the aeration holes is 5~10 mm.

[0012] This utility model is used for high-density tanks for flocculation and anti-settling. Preferably, the opening direction of the aeration holes is inclined downward at 30~60°.

[0013] This utility model is used for a high-density tank for flocculation and anti-settling. Preferably, the push flow zone is further provided with at least one guide plate, the plate surface of which is arranged parallel to the water flow direction, and the first end is fixed to the first partition wall, the second end is fixed to the water outlet baffle wall, the top end is higher than the through-wall hole area, and the bottom end is fixed to the bottom of the push flow zone, so as to divide the push flow zone into at least two parallel water flow channels.

[0014] This utility model is used for a high-density tank for flocculation and anti-settling. Preferably, there are 2 to 9 guide plates, which are evenly arranged at equal intervals in the flow-pushing zone.

[0015] This utility model is used for a high-density sedimentation tank for flocculation and anti-settling. Preferably, the sedimentation tank is provided with a second partition wall, the top of which is fixed to the top of the sedimentation tank and the bottom of which is suspended to form a water flow channel, which is used to divide the sedimentation tank into a first chamber and a second chamber that are connected in sequence according to the water flow direction. The second chamber has a sloping plate layer laid flat at the position corresponding to the second partition wall. The sloping plate layer is distributed with sloping pipes for water flow, which are used to guide water from bottom to top and output clean water. The second partition wall and the inclined plate layer divide the sedimentation tank into a sedimentation zone and a clear water zone that are connected sequentially in the direction of water flow; the clear water zone is located above the inclined plate layer. The sedimentation tank is also equipped with a baffle wall, which is located at the bottom of the second partition wall, for diverting and buffering the water flow from the first chamber.

[0016] This utility model is used for high-density flocculation and anti-settling tanks. Preferably, the height of the retaining wall (33) is h1 and the height of the inclined plate layer (32) is h2, then h1 / h2 = 1 / 3 to 1 / 2; and / or, The retaining wall (33) is inclined toward the second chamber at an angle of 30~60°.

[0017] The beneficial effects of this utility model are as follows: This utility model is used for a high-density tank for flocculation and anti-settling, which can significantly enhance the flocculation function and effectively solve the problem of sludge deposition in the plug flow zone. Specifically, (1) by setting a through-wall hole area and through-wall hole on the outlet baffle wall of the plug flow zone, it helps to realize the real-time discharge of sludge, reduce the deposition of sludge in the plug flow zone, and help to achieve efficient flocculation; (2) by shortening the hydraulic residence time of the plug flow zone, combined with the setting of through-wall hole, a dual channel for sludge transfer is formed (one channel is above the outlet baffle wall of the plug flow zone; the other channel is the through-wall hole of the through-wall hole area), which helps to reduce the amount of sludge deposition in the plug flow zone, and the amount of sludge deposition can be reduced by more than 70%; (3) by setting the baffle wall, the short-flow rate can be effectively reduced to below 8%. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of a high-density tank for flocculation and anti-settling in one embodiment of the present invention.

[0019] Figure 2 This is a top view of the plugging zone in a high-density tank for flocculation and anti-sedimentation according to one embodiment of the present invention.

[0020] Figure 3 This is a front view structural schematic diagram of the guide plate in the flow zone of a high-density tank for flocculation and anti-settling, according to one embodiment of the present invention.

[0021] Figure 4 This is a left-side view of the plugging zone in a high-density tank for flocculation and anti-sedimentation according to one embodiment of the present invention. Detailed Implementation

[0022] The technical solution and effects of this utility model are further described below with reference to specific embodiments / examples. The following embodiments / examples are only for illustrating the content of this utility model, and the utility model is not limited to the following embodiments or examples. Simple modifications made to this utility model based on the concept of this utility model are all within the scope of protection claimed by this utility model.

[0023] like Figures 1-4 As shown, this utility model provides a high-density tank for flocculation and anti-sedimentation, including a reaction tank 1, a flocculation tank 2, a sedimentation tank 3 and a post-mixing tank 4 arranged sequentially in the direction of water flow, for sequentially performing chemical reaction, flocculation, sedimentation and post-mixing on the influent, and outputting effluent. The flocculation tank 2 is provided with a first partition wall 21, the top of which is fixed to the top of the flocculation tank 2 and the bottom of which is suspended to form a water flow channel, dividing the flocculation tank 2 into a flocculation zone 5 and a push flow zone 6 that are connected in sequence according to the water flow direction. The outlet baffle 61 of the flow-pushing zone 6 is provided with a through-wall hole area, which is located on the upper part of the outlet baffle 61; the through-wall hole area is provided with through-wall holes 611; The through-wall holes 611 are arranged in at least one row, with at least two holes in each row, along the width of the outlet baffle wall 61, so that sludge can pass through smoothly under different low-load conditions.

[0024] Those skilled in the art will understand that the reaction tank 1 is equipped with a third partition wall, dividing it into reaction tank A and reaction tank B, which are connected sequentially in the direction of water flow, for adding relevant reagents to each tank for reaction. The flocculation tank 2 is equipped with a flocculation mixer driven by a motor. The sedimentation tank 3 is equipped with a sludge scraper driven by a motor.

[0025] In this invention, the influent includes any one or a combination of reclaimed water, surface water, and circulating wastewater; wherein, the circulating wastewater is generally the circulating wastewater from the circulating cooling tower used for cooling in a thermal power plant or steel plant.

[0026] This invention relates to a high-density flocculation and anti-sedimentation tank, which significantly enhances flocculation function and effectively solves the problem of sludge deposition in the plug flow zone. By setting through-wall perforation areas and through-wall holes on the outlet baffle wall of the plug flow zone, a dual channel for sludge transfer is formed in the outlet baffle wall of the plug flow zone (one channel is above the outlet baffle wall of the plug flow zone; the other channel is through-wall holes in the through-wall perforation area), thereby facilitating real-time sludge discharge and avoiding the situation where sludge is not easily discharged from above the outlet baffle wall into the sedimentation zone at low flow rates, reducing sludge deposition in the plug flow zone and helping to achieve efficient flocculation.

[0027] In one embodiment, the diameter of the through hole 611 is 50~200 mm, such as 50 mm, 100 mm, 150 mm and 200 mm, and any value and range within this range, for sludge to pass through.

[0028] In one embodiment, the opening direction of the through hole 611 is inclined downward along the water flow direction at 5~20°, such as 5°, 10°, 15° and 20°, as well as any value and range within this range, so as to facilitate the passage of sludge.

[0029] In one embodiment, the upper part of the through-wall hole area is provided with at least one row of through-wall holes 611, each row including at least 3 through-wall holes 611, and evenly arranged from the first end to the second end along the width direction of the water outlet baffle 61; preferably including 6 to 10 through-wall holes 611, such as 6, 7, 8, 9 and 10; and / or, At least one row of through-wall holes 611 is provided in the middle of the through-wall hole area, each row including at least two through-wall holes 611, and evenly arranged at its first and second ends along the width direction of the water outlet baffle 61; preferably including 4 to 6 through-wall holes 611, such as 4, 5 and 6; and / or, The lower part of the through-wall hole area is provided with at least one row of through-wall holes 611, each row including at least 2 through-wall holes 611, and evenly arranged at the first end and the second end of the water outlet baffle 61 along its width direction; preferably including 2 to 4 through-wall holes 611, such as 2, 3 and 4.

[0030] In one implementation, such as Figure 1 , 4 As shown, a row of wall-penetrating holes 611 is provided at the upper part of the wall-penetrating hole area, including 6 wall-penetrating holes 611, and they are evenly arranged from the first end to the second end along the width direction of the water outlet baffle wall 61. A row of through-wall holes 611 is provided in the middle of the through-wall hole area, each row including 4 through-wall holes 611, and they are evenly arranged at the first and second ends of the water outlet baffle wall 61 along its width direction. The lower part of the through-wall hole area is provided with a row of through-wall holes 611, each row including 2 through-wall holes 611, and arranged at the first end and the second end respectively along the width direction of the water outlet baffle 61.

[0031] In this invention, the aforementioned arrangement of the through-wall hole area facilitates the smooth passage of sludge under low load.

[0032] In another embodiment (not shown in the figure), the through-wall holes 611 are arranged in at least two rows, with at least two holes in each row, along the width direction of the water outlet baffle wall 61; preferably, they are evenly distributed; wherein, The through-holes 611 in adjacent rows are arranged in an alternating pattern; and / or, The spacing between adjacent through holes 611 in each row is 5 to 10 times the hole diameter, such as 5, 6, 7, 8, 9, 10 times, or any value within this range.

[0033] The wall-penetrating hole design in this invention facilitates the smooth passage of sludge under low load conditions.

[0034] In one implementation, such as Figure 1 , 4 As shown, the plug flow zone 6 is equipped with an aeration pipe 62, which has an aeration hole 621 and its air inlet is connected to a compressed air pipe 9 for introducing compressed air to aerate the plug flow zone 6, thereby helping to prevent sludge deposition in the plug flow zone 6 and allowing it to be transferred smoothly.

[0035] To improve the aeration effect, in one embodiment, the aeration intensity of the aeration pipe 62 is 0.5~2.0 m. 3 / (h·m 2 For example, 0.5 m 3 / (h·m 2 ), 1 m 3 / (h·m 2 ), 1.5 m 3 / (h·m 2 ) and 2 m 3 / (h·m 2 ) and any value and range of values ​​within that range.

[0036] To facilitate aeration control, in one embodiment, an aeration control valve (91) is provided on the compressed air pipeline 9 to control the aeration intensity of the aeration pipe 62.

[0037] To improve the aeration effect, in one embodiment, the aperture of the aeration hole 621 is 5~10 mm, such as 5 mm, 6 mm, 7 mm, 8 mm, 9 mm and 10 mm, as well as any value and range within this range.

[0038] To improve the aeration effect, in one embodiment, the opening direction of the aeration hole 621 is inclined downward at 30~60°, such as 30°, 35°, 40°, 45°, 50°, 55° and 60°, as well as any value and range within this range.

[0039] In one implementation, such as Figure 1 , 4 As shown, the aeration pipe 62 is a closed-loop pipe, and the plane of its closed loop is arranged parallel to the water outlet baffle 61, which is used to aerate the push flow zone 6.

[0040] In one embodiment, the aeration hole 621 is disposed on the closed-loop outer ring surface of the aeration pipe 62.

[0041] In one implementation, such as Figure 1 , 4 As shown, there is at least one aeration hole 621, which is distributed along the closed-ring direction on the closed-ring outer ring surface of the aeration pipe 62.

[0042] In one implementation, such as Figure 1 , 4 As shown, the aeration pipe 62 has a closed-loop structure comprising a horizontal pipe, a first vertical pipe, a second vertical pipe, and an arc-shaped pipe. The horizontal pipe is located at the top. The first ends of the first vertical pipe and the second vertical pipe are respectively connected to the two ends of the horizontal pipe. The second ends of the first vertical pipe and the second vertical pipe are respectively connected to the two ends of the arc-shaped pipe, and the arc-shaped pipe protrudes outward. The aeration holes 621 are provided on the first vertical pipe, the second vertical pipe, and the arc-shaped pipe.

[0043] In one embodiment, the hydraulic residence time of the push flow zone 6 is shortened to 0.5 to 2 min, such as 0.5 min, 1 min, 1.5 min and 2 min, as well as any value and range within this range.

[0044] In one implementation, such as Figure 1 , 2As shown, the push flow zone 6 is also provided with at least one guide plate 63, the plate surface of which is arranged parallel to the water flow direction, and the first end is fixed to the first partition wall 21, the second end is fixed to the water outlet baffle wall 61, the top end is higher than the through wall hole area, and the bottom end is fixed to the bottom of the push flow zone 6. It is used to divide the push flow zone 6 into at least two parallel water flow channels 65, thereby diverting the water from the flocculation tank 2 and facilitating sludge transfer.

[0045] In one embodiment, there are 2 to 9 guide plates 63, such as 2, 3, 4, 5, 6, 7, 8, and 9, which are evenly distributed at equal intervals in the flow-pushing zone 6.

[0046] In one implementation, such as Figure 1 , 3 As shown, the flow-pushing zone 6 has a guide slope 64 located at the root of the outlet baffle wall 61. The slope of the guide slope 64 is 45~75°, such as 45°, 50°, 55°, 60°, 65°, 70° and 75°, as well as any value and range within this range. Preferably, the bottom end of the guide plate 63 is at least partially fixed to the guide slope 64.

[0047] In one implementation, such as Figure 1 As shown, the guide slope 64 extends towards the water inlet to the entire bottom of the push flow zone 6; preferably, the bottom end of the guide plate 63 is fixed to the guide slope 64.

[0048] In one implementation, such as Figure 1 As shown, a second partition wall 31 is provided inside the sedimentation tank 3, with its top fixed to the top of the sedimentation tank 3 and its bottom suspended to form a water flow channel, which is used to divide the sedimentation tank 3 into a first chamber and a second chamber that are connected in sequence according to the water flow direction. The second chamber has a sloping plate layer 32 laid flat at the position corresponding to the second partition wall 31. The sloping plate layer 32 is provided with sloping pipes for water flow, which are used to guide water from bottom to top and output clean water. The second partition wall 31 and the inclined plate layer 32 divide the sedimentation tank 3 into a sedimentation zone 7 and a clear water zone 8 that are connected sequentially in the direction of water flow; the clear water zone 8 is located above the inclined plate layer 32. The sedimentation tank 3 is also provided with a baffle wall 33, which is located at the bottom of the second partition wall 31, for diverting and buffering the water flow from the first chamber.

[0049] Those skilled in the art will understand that the second chamber in the sedimentation tank 3 is divided by the inclined plate layer 32 into an upper space and a lower space located above and below the inclined plate layer 32; the sedimentation zone 7 includes the first chamber in the sedimentation tank 3 and the lower space in the second chamber separated by the inclined plate layer 32, and the clear water zone 8 includes the upper space in the second chamber in the sedimentation tank 3 separated by the inclined plate layer 32.

[0050] Those skilled in the art will understand that the clear water zone 8 is provided with a water outlet trough 10, which is used to output the clear water of the clear water zone 8 to the post-mixing tank 4 for further post-mixing treatment.

[0051] In one embodiment, let the height of the retaining wall 33 be h1 and the height of the inclined plate layer 32 be h2, then h1 / h2 = 1 / 3 to 1 / 2, such as 1 / 3, 2 / 5 and 1 / 2, as well as any value and range within this range.

[0052] In this utility model, the height of the retaining wall 33 and the height of the inclined plate layer 32 are the heights of the structure itself, excluding their positional height.

[0053] In one embodiment, the retaining wall 33 is inclined toward the second chamber, preferably with an inclination angle of 30 to 60°, such as 30°, 35°, 40°, 45°, 50°, 55° and 60°, and any value and range within this range.

[0054] In this utility model, the operation process of the aforementioned high-density pool includes: Influent is introduced into the high-density tank, and undergoes chemical reaction, flocculation, sedimentation, and post-mixing in reaction tank 1, flocculation tank 2, sedimentation tank 3, and post-mixing tank 4 in sequence, before being discharged as effluent; wherein, In the reaction tank 1, water is fed in and chemicals are added for reaction; In the flocculation tank 2, the effluent from the reaction tank 1 first enters the flocculation zone 5 for flocculation, and then the generated sludge water enters the plug flow zone 6, and passes through the dual channels of sludge transfer formed by the top of the effluent baffle wall 61 and / or the wall penetration area, and is output to the sedimentation tank 3. In the sedimentation tank 3, the sludge water from the plug flow zone 6 first enters the sedimentation zone 7, and then enters the clear water zone 8 through the inclined plate layer 32; In the post-mixing tank 4, the clear water from the sedimentation tank 3 undergoes post-mixing treatment and is then output as effluent.

[0055] This utility model is used for a high-density tank for flocculation and anti-settling, which can significantly enhance the flocculation function and effectively solve the problem of sludge deposition in the plug flow zone. Specifically, (1) by setting a through-wall hole area and through-wall hole on the outlet baffle wall of the plug flow zone, it helps to realize the real-time discharge of sludge, reduce the deposition of sludge in the plug flow zone, and help to achieve efficient flocculation; (2) by shortening the hydraulic residence time of the plug flow zone, combined with the setting of through-wall hole, a dual channel for sludge transfer is formed (one channel is above the outlet baffle wall of the plug flow zone; the other channel is through-wall hole), which helps to reduce the amount of sludge deposition in the plug flow zone, and the amount of sludge deposition can be reduced by more than 70%; (3) by setting the baffle wall, the short-flow rate can be effectively reduced to below 8%.

[0056] The present invention will be further illustrated by the following examples.

[0057] Example 1 (S1) A high-density tank A1 for flocculation and anti-sedimentation includes a reaction tank 1, a flocculation tank 2, a sedimentation tank 3 and a post-mixing tank 4 arranged sequentially in the direction of water flow. It is used to sequentially perform chemical reaction, flocculation, sedimentation and post-mixing on the influent and output effluent. The flocculation tank 2 is provided with a first partition wall 21, the top of which is fixed to the top of the flocculation tank 2 and the bottom of which is suspended to form a water flow channel, dividing the flocculation tank 2 into a flocculation zone 5 and a push flow zone 6 that are connected in sequence according to the water flow direction. The outlet baffle 61 of the flow-pushing zone 6 is provided with a through-wall hole area, which is located on the upper part of the outlet baffle 61; the through-wall hole area is provided with through-wall holes 611; The through-wall holes 611 are arranged in one row, with two holes in each row, and are evenly distributed along the width of the water outlet baffle wall 61. The diameter of the through hole 611 is 100 mm.

[0058] Example 2 (S2) A high-density flocculation and sedimentation prevention tank A2 differs from Example 1 only in the following ways: The diameter of the through hole 611 is 50 mm.

[0059] Example 3 (S3) A high-density flocculation and sedimentation prevention tank A3 differs from Example 1 only in the following ways: The diameter of the through hole 611 is 200 mm.

[0060] Example 4 (S4) A high-density flocculation and anti-sedimentation tank A4 differs from Example 1 only in the following ways: The opening direction of the through hole 611 is inclined downward at 10° along the water flow direction.

[0061] Example 5 (S5) A high-density flocculation and sedimentation prevention tank A5 differs from Example 1 only in the following ways: The opening direction of the through hole 611 is inclined downward at 5° along the water flow direction.

[0062] Example 6 (S6) A high-density flocculation and anti-sedimentation tank A6 differs from Example 1 only in the following ways: The opening direction of the through hole 611 is inclined downward at 20° along the water flow direction.

[0063] Example 7 (S7) A high-density flocculation and sedimentation prevention tank A7 differs from Example 1 only in the following ways: like Figure 1 , 4 As shown, a row of wall-penetrating holes 611 is provided at the upper part of the wall-penetrating hole area, including 6 wall-penetrating holes 611, and they are evenly arranged from the first end to the second end along the width direction of the water outlet baffle wall 61. A row of through-wall holes 611 is provided in the middle of the through-wall hole area, each row including 4 through-wall holes 611, and they are evenly arranged at the first and second ends of the water outlet baffle wall 61 along its width direction. The lower part of the through-wall hole area is provided with a row of through-wall holes 611, each row including 2 through-wall holes 611, and arranged at the first end and the second end respectively along the width direction of the water outlet baffle 61.

[0064] Example 8 (S8) A high-density flocculation and anti-sedimentation tank A8 differs from Example 1 only in the following ways: The through-wall holes 611 are arranged in two rows, with three holes in each row, and are evenly distributed along the width of the water outlet baffle wall 61. The spacing between adjacent through holes 611 in each row is 6 times the hole diameter.

[0065] Example 9 (S9) A high-density flocculation and anti-sedimentation tank A9 differs from Example 8 only in the following ways: The through-wall holes 611 in adjacent rows are arranged alternately.

[0066] Example 10 (S10) A high-density flocculation and sedimentation prevention tank A10 differs from Example 1 only in the following ways: An aeration pipe 62 is inserted into the flow zone 6. The aeration pipe 62 is provided with aeration holes 621, and its air inlet end is connected to a compressed air pipe 9 for introducing compressed air to aerate the flow zone 6. The aeration intensity of the aeration pipe 62 is 1.0 m. 3 / (h·m 2 ); The aeration hole 621 has a diameter of 7 mm.

[0067] Example 11 (S11) A high-density flocculation and anti-sedimentation tank A11 differs from Example 10 only in the following ways: The aeration intensity of the aeration pipe 62 is 0.5 m. 3 / (h·m 2 ); The aeration hole 621 has a diameter of 5 mm.

[0068] Example 12 (S12) A high-density flocculation and anti-sedimentation tank A12 differs from Example 10 only in the following ways: The aeration intensity of the aeration pipe 62 is 2.0 m. 3 / (h·m 2 ); The aeration hole 621 has a diameter of 10 mm.

[0069] Example 13 (S13) A high-density flocculation and sedimentation prevention tank A13 differs from Example 10 only in the following ways: The aeration hole 621 is inclined downward at 45°.

[0070] Example 14 (S14) A high-density flocculation and anti-sedimentation tank A14 differs from Example 10 only in the following ways: The aeration hole 621 is inclined downward at 30°.

[0071] Example 15 (S15) A high-density flocculation and anti-sedimentation tank A15 differs from Example 10 only in the following ways: The aeration hole 621 is inclined downward at 60°.

[0072] Example 16 (S16) A high-density flocculation and anti-sedimentation tank A16 differs from Example 10 only in the following ways: like Figure 1 , 4As shown, the aeration pipe 62 is a closed-loop pipe, and the plane of its closed loop is parallel to the water outlet baffle 61, which is used to aerate the push flow zone 6. The aeration holes 621 are disposed on the closed annular outer ring surface of the aeration pipe 62; and are dispersedly disposed on the closed annular outer ring surface of the aeration pipe 62 along its closed annular direction. The aeration pipe 62 has a closed-loop structure comprising a horizontal pipe, a first vertical pipe, a second vertical pipe, and an arc-shaped pipe. The horizontal pipe is located at the top. The first ends of the first vertical pipe and the second vertical pipe are respectively connected to the two ends of the horizontal pipe. The second ends of the first vertical pipe and the second vertical pipe are respectively connected to the two ends of the arc-shaped pipe, and the arc-shaped pipe protrudes outward. The aeration holes 621 are provided on the first vertical pipe, the second vertical pipe, and the arc-shaped pipe.

[0073] Example 17 (S17) A high-density flocculation and anti-sedimentation tank A17 differs from Example 1 only in the following ways: like Figure 1 , 2 As shown in Figure 3, the push flow zone 6 is also provided with a guide plate 63, the plate surface of which is parallel to the water flow direction, and the first end is fixed to the first partition wall 21, the second end is fixed to the water outlet baffle wall 61, the top end is higher than the through-wall hole area, and the bottom end is fixed to the bottom of the push flow zone 6, which is used to divide the push flow zone 6 into two parallel water flow channels 65.

[0074] Example 18 (S18) A high-density flocculation and sedimentation prevention tank A18 differs from Example 1 only in the following ways: like Figure 1 , 2 As shown in Figure 3, the flow-pushing zone 6 is also provided with three guide plates 63, the surface of which is parallel to the water flow direction. The first end is fixed to the first partition wall 21, the second end is fixed to the water outlet baffle wall 61, the top end is higher than the through-wall hole area, and the bottom end is fixed to the bottom of the flow-pushing zone 6, which are used to divide the flow-pushing zone 6 into four parallel water channels 65.

[0075] Example 19 (S19) A high-density flocculation and sedimentation prevention tank A19 differs from Example 1 only in the following ways: The sedimentation tank 3 is provided with a second partition wall 31, the top of which is fixed to the top of the sedimentation tank 3 and the bottom of which is suspended to form a water flow channel, which is used to divide the sedimentation tank 3 into a first chamber and a second chamber that are connected in sequence according to the water flow direction. The second chamber has a sloping plate layer 32 laid flat at the position corresponding to the second partition wall 31. The sloping plate layer 32 is provided with sloping pipes for water flow, which are used to guide water from bottom to top and output clean water. The second partition wall 31 and the inclined plate layer 32 divide the sedimentation tank 3 into a sedimentation zone 7 and a clear water zone 8 that are connected sequentially in the direction of water flow; the clear water zone 8 is located above the inclined plate layer 32. The sedimentation tank 3 is also provided with a baffle wall 33, which is located at the bottom of the second partition wall 31, for diverting and buffering the water flow from the first chamber; Let the height of the retaining wall 33 be h1 and the height of the inclined plate layer 32 be h2, then h1 / h2 = 1 / 3.

[0076] Example 20 (S20) A high-density flocculation and anti-sedimentation tank A20 differs from Example 19 only in the following ways: h1 / h2=1 / 2.

[0077] Example 21 (S21) A high-density flocculation and anti-sedimentation tank A21 differs from Example 19 only in the following ways: The retaining wall 33 is inclined toward the second chamber at an angle of 45°.

[0078] Example 22 (S22) A high-density flocculation and anti-sedimentation tank A22 differs from Example 19 only in the following ways: The retaining wall 33 is inclined toward the second chamber at an angle of 30°.

[0079] Example 23 (S23) A high-density flocculation and anti-sedimentation tank A23 differs from Example 19 only in the following ways: The retaining wall 33 is inclined toward the second chamber at an angle of 60°.

[0080] Example 24 (S24) A high-density flocculation and anti-sedimentation tank A24 differs from Example 1 only in the following ways: The opening direction of the through hole 611 is inclined downward at 10° along the water flow direction; The upper part of the through-wall hole area is provided with a row of through-wall holes 611, including 6 through-wall holes 611, and they are evenly arranged from the first end to the second end along the width direction of the water outlet baffle 61. A row of through-wall holes 611 is provided in the middle of the through-wall hole area, each row including 4 through-wall holes 611, and they are evenly arranged at the first and second ends of the water outlet baffle wall 61 along its width direction. The lower part of the through-wall hole area is provided with a row of through-wall holes 611, each row including 2 through-wall holes 611, and arranged at the first end and the second end respectively along the width direction of the water outlet baffle 61. A high-density tank for flocculation and anti-sedimentation, compared with Example 1, differs only in the following aspects: An aeration pipe 62 is inserted into the flow zone 6. The aeration pipe 62 is provided with aeration holes 621, and its air inlet end is connected to a compressed air pipe 9 for introducing compressed air to aerate the flow zone 6. The aeration intensity of the aeration pipe 62 is 1.0 m. 3 / (h·m 2 ); The aeration hole 621 has a diameter of 7 mm; The opening direction of the aeration hole 621 is inclined downward at 45°; The aeration pipe 62 is a closed loop pipe, and the plane in which the closed loop is located is parallel to the water outlet baffle 61, which is used to aerate the push flow zone 6. The aeration holes 621 are disposed on the closed annular outer ring surface of the aeration pipe 62; and are dispersedly disposed on the closed annular outer ring surface of the aeration pipe 62 along its closed annular direction. The aeration pipe 62 has a closed-loop structure comprising a horizontal pipe, a first vertical pipe, a second vertical pipe, and an arc-shaped pipe. The horizontal pipe is located at the top. The first ends of the first vertical pipe and the second vertical pipe are respectively connected to the two ends of the horizontal pipe. The second ends of the first vertical pipe and the second vertical pipe are respectively connected to the two ends of the arc-shaped pipe, and the arc-shaped pipe protrudes outward. The aeration holes 621 are provided on the first vertical pipe, the second vertical pipe, and the arc-shaped pipe. The flow-pushing zone 6 is also provided with three guide plates 63, the surface of which is parallel to the water flow direction. The first end is fixed to the first partition wall 21, the second end is fixed to the water outlet baffle wall 61, the top end is higher than the wall hole area, and the bottom end is fixed to the bottom of the flow-pushing zone 6, which are used to divide the flow-pushing zone 6 into four parallel water channels 65. The sedimentation tank 3 is provided with a second partition wall 31, the top of which is fixed to the top of the sedimentation tank 3 and the bottom of which is suspended to form a water flow channel, which is used to divide the sedimentation tank 3 into a first chamber and a second chamber that are connected in sequence according to the water flow direction. The second chamber has a sloping plate layer 32 laid flat at the position corresponding to the second partition wall 31. The sloping plate layer 32 is provided with sloping pipes for water flow, which are used to guide water from bottom to top and output clean water. The second partition wall 31 and the inclined plate layer 32 divide the sedimentation tank 3 into a sedimentation zone 7 and a clear water zone 8 that are connected sequentially in the direction of water flow; the clear water zone 8 is located above the inclined plate layer 32. The sedimentation tank 3 is also provided with a baffle wall 33, which is located at the bottom of the second partition wall 31, for diverting and buffering the water flow from the first chamber; Let the height of the retaining wall 33 be h1 and the height of the inclined plate layer 32 be h2, then h1 / h2 = 5 / 12; The retaining wall 33 is inclined toward the second chamber at an angle of 45°.

[0081] The application results are as follows: The treated water used as influent was processed through high-density tanks A1-24 in Examples 1-24. It was found that by setting the through-wall perforation area, the sludge deposition in the plug flow zone 6 was reduced by at least 70% within a week, and the flocculation effect was significantly improved. Moreover, with aeration at most once a week, the deposited sludge could be mixed with water to form mud-water and then transferred to the sedimentation tank, thus easily solving the sludge deposition problem in the plug flow zone. Over a long period of time, no sludge deposition problem occurred in the plug flow zone, and no manual sludge cleaning was required. The high-density tank operated stably for a long time. Furthermore, the setting of the baffle wall 33 can effectively reduce the short-flow rate in the sedimentation zone to below 8%.

[0082] The above embodiments / examples are only used to illustrate the content of this utility model and are not limited thereto. Any simple changes made to this utility model based on the concept of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A high-density flocculation and sedimentation prevention tank, characterized in that, The high-density tank includes a reaction tank (1), a flocculation tank (2), a sedimentation tank (3) and a post-mixing tank (4) arranged sequentially in the direction of water flow. It is used to perform chemical reaction, flocculation, sedimentation and post-mixing on the influent in sequence, and output effluent. The flocculation tank (2) is provided with a first partition wall (21), the top of which is fixed to the top of the flocculation tank (2) and the bottom of which is suspended to form a water flow channel, dividing the flocculation tank (2) into a flocculation zone (5) and a push flow zone (6) that are connected in sequence according to the water flow direction. The outlet baffle (61) of the flow-pushing zone (6) is provided with a through-wall hole area, which is located on the upper part of the outlet baffle (61); the through-wall hole area is provided with through-wall holes (611). The through-wall holes (611) are arranged in at least one row, with at least two holes in each row, along the width of the water outlet baffle (61).

2. The high-density pool according to claim 1, characterized in that, The diameter of the through-wall hole (611) is 50~200 mm; and / or, The opening direction of the through hole (611) is inclined downward at 5~20° along the water flow direction.

3. The high-density pool according to claim 1, characterized in that, The upper part of the through-wall hole area is provided with at least one row of through-wall holes (611), each row including at least 3 through-wall holes (611), and they are evenly arranged from the first end to the second end along the width direction of the water outlet baffle (61); and / or, At least one row of through-wall holes (611) is provided in the middle of the through-wall hole area, each row including at least two through-wall holes (611), and they are evenly arranged at the first and second ends of the water outlet baffle (61) along the width direction; and / or, The lower part of the through-wall hole area is provided with at least one row of through-wall holes (611), each row including at least two through-wall holes (611), and they are evenly arranged at the first and second ends of the water outlet baffle (61) along the width direction.

4. The high-density pool according to claim 1, characterized in that, The through-wall holes (611) are arranged in at least two rows, with at least two holes in each row, along the width of the water outlet baffle (61); wherein, The through-wall holes (611) in adjacent rows are staggered; and / or, The spacing between adjacent through holes (611) in each row is 5 to 10 times the hole diameter.

5. The high-density pool according to any one of claims 1-4, characterized in that, The propulsion zone (6) is equipped with an aeration pipe (62), which has an aeration hole (621) and its air inlet is connected to a compressed air pipe (9) for aeration of the propulsion zone (6).

6. The high-density pool according to claim 5, characterized in that, The aeration hole (621) has a diameter of 5~10 mm.

7. The high-density pool according to claim 5, characterized in that, The aeration hole (621) is inclined downward at a direction of 30~60°.

8. The high-density pool according to any one of claims 1-4 and 6-7, characterized in that, The push flow zone (6) is also provided with at least one guide plate (63), the plate surface of which is parallel to the water flow direction, and the first end is fixed to the first partition wall (21), the second end is fixed to the water outlet baffle wall (61), the top end is higher than the wall hole area, and the bottom end is fixed to the bottom of the push flow zone (6), for dividing the push flow zone (6) into at least two parallel water flow channels (65).

9. The high-density pool according to any one of claims 1-4 and 6-7, characterized in that, The sedimentation tank (3) is provided with a second partition wall (31), the top of which is fixed to the top of the sedimentation tank (3) and the bottom of which is suspended to form a water flow channel, which is used to divide the sedimentation tank (3) into a first chamber and a second chamber that are connected in sequence according to the water flow direction. The second chamber has a sloping plate layer (32) laid flat at the position corresponding to the second partition wall (31). The sloping plate layer (32) is provided with sloping pipes for water flow, which are used to guide water from bottom to top and output clean water. The second partition wall (31) and the inclined plate layer (32) divide the sedimentation tank (3) into a sedimentation zone (7) and a clear water zone (8) that are connected sequentially in the direction of water flow; the clear water zone (8) is located above the inclined plate layer (32); The sedimentation tank (3) is also provided with a baffle wall (33), which is located at the bottom of the second partition wall (31) for diverting and buffering the water flow from the first chamber.

10. The high-density pool according to claim 9, characterized in that, Let the height of the retaining wall (33) be h1 and the height of the inclined plate layer (32) be h2, then h1 / h2 = 1 / 3 to 1 / 2; and / or, The retaining wall (33) is inclined toward the second chamber at an angle of 30~60°.

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