Flocculation and coagulation integrated tank

Abstract

The utility model relates to the technical field of water treatment, in particular to a flocculation and coagulation integrated pool which comprises a pool body, a coagulation area is arranged at the water inlet end of the pool body, and a flocculation area and a sedimentation area which are communicated with each other are arranged in the coagulation area in the water flowing direction. The coagulation area is internally provided with a coagulation efficiency-increasing structure which enables different water flows to collide to form turbulent flow so as to facilitate mixing, and the flocculation area is internally fixedly provided with a flocculation efficiency-increasing structure which enables the water flows to turn back and flow and to be discharged in a split-flow manner; the problem of poor wastewater treatment effect caused by poor coagulation and flocculation effects of integrated water treatment is solved.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, specifically to an integrated flocculation and coagulation tank. Background Technology

[0002] While existing integrated flocculation and coagulation tanks offer advantages such as small footprint and low construction cost, they often fail to achieve satisfactory coagulation and flocculation effects in wastewater treatment, making it difficult to ensure sufficient flocculation and coagulation of the wastewater. For example, an integrated water treatment device, as described in application number "201720402812.8," features flexible design, compact structure, small footprint, and impact resistance, allowing for trailer transport and installation within a few days. Furthermore, this integrated water treatment device boasts high treatment efficiency, low cost, and strong load capacity, making it suitable for purifying polluted water bodies such as rivers, lakes, and canals, as well as treating industrial wastewater with high suspended solids content. However, this integrated water treatment device cannot effectively improve wastewater coagulation and flocculation effects, thus failing to significantly enhance the quality of wastewater treatment.

[0003] Therefore, this utility model provides an integrated flocculation and coagulation tank to solve the above problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing integrated water treatment has poor coagulation and flocculation effects, resulting in poor wastewater treatment effect.

[0005] This utility model provides the following technical solution: a flocculation and coagulation integrated tank, including a tank body, a coagulation zone is provided at the water inlet end of the tank body, the coagulation zone is provided with interconnected flocculation zone and sedimentation zone along the water flow direction, a coagulation efficiency improvement structure is installed in the coagulation zone to cause different water flows to collide and form turbulence to facilitate mixing, and a flocculation efficiency improvement structure is fixedly installed in the flocculation zone to cause the water flow to turn around and be diverted for discharge.

[0006] The coagulation efficiency improvement structure includes an inlet, a first injection port, an energy-dissipating coagulation plate, and a variable speed agitator. The coagulation zone has a parallel inlet and a first injection port fixedly installed near the bottom. The energy-dissipating coagulation plate is fixedly installed at the bottom of the coagulation zone away from the inlet. The variable speed agitator is fixedly installed above the coagulation zone.

[0007] The energy-dissipating concrete slab includes an inclined energy-dissipating slab and a horizontal slab. The inclined energy-dissipating slab is fixedly installed at the bottom of the concrete zone, and the horizontal slab is fixedly installed above the inclined energy-dissipating slab. The length of the horizontal slab is less than the side length of the concrete zone, forming an opening.

[0008] A connecting port is provided above the side of the coagulation zone, and the other end of the connecting port is located at the center of the flocculation zone. A second injection port is fixedly installed opposite the connecting port.

[0009] The flocculation efficiency-enhancing structure includes baffles and baffles. Baffles forming a rotating flow channel are fixedly installed in the flocculation zone, and multiple baffles are fixedly installed at intervals in the baffles.

[0010] A flow divider is fixedly installed on the inner wall of the flocculation zone near the end of the baffle plate.

[0011] The diameter of the rotary channel increases along the direction of water flow.

[0012] A collection hopper is fixedly installed at the bottom of the sedimentation zone, and an inclined sedimentation plate is fixedly installed on the outlet side of the sedimentation zone.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model, through its coagulation efficiency-enhancing structure, guides parallel-flowing wastewater and coagulant to flow uphill and impact the horizontal plate. This generates turbulence while eliminating input kinetic energy, and improves the mixing effect between wastewater and coagulant through turbulence. After impact mixing, the wastewater flows through the openings that contract on the side of the horizontal plate, further accelerating mixing and shortening the reaction time by utilizing the contracted flow channels. This further promotes particle collision and floc formation.

[0015] 2. In this invention, the rotating flow channel formed by the baffle plate can extend the water mixing path to improve the mixing effect, while also generating local turbulence when the water flow turns. This increases the collision frequency between particles, enhances the particle collision effect, and facilitates more efficient aggregation of particles to form larger flocs, thereby improving the flocculation effect. Furthermore, as the water flows along the rotating flow channel, it comes into contact with the baffle plate, which further disturbs the water flow to create turbulence. This turbulent and irregular flow further complicates the trajectory of suspended particles, increasing the number of effective collisions between particles. This, combined with the rotating flow, further enhances the particle collision effect and improves the flocculation effect.

[0016] 3. The rotating flow channel with an increasing cross-sectional area along the water flow direction can continuously reduce the wastewater flow velocity to achieve low turbulence, which facilitates the natural aggregation of suspended particles to form larger and denser flocs. This allows for the phased control of the mixing intensity of flocculation and wastewater, meeting the phased requirements of the flocculation reaction and improving subsequent sedimentation efficiency. Attached Figure Description

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

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a front sectional view of the present invention;

[0020] Figure 3 This is a top view of the structure of this utility model.

[0021] In the diagram: 1. Coagulation zone; 11. Coagulation efficiency improvement structure; 111. Inlet; 112. First injection port; 113. Energy dissipation coagulation plate; 1131. Inclined energy dissipation plate; 1132. Horizontal plate; 114. Variable speed agitator; 115. Opening; 116. Connecting port; 2. Flocculation zone; 21. Flocculation efficiency improvement structure; 211. Baffle plate; 212. Rotary flow channel; 213. Baffle plate; 214. Diverting plate; 22. Second injection port; 3. Sedimentation zone; 31. Collection hopper; 32. Inclined sedimentation plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely represents some embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and "back side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this utility model is conventionally placed during use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0025] It should also be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Based on the technical problem of poor wastewater treatment effect due to poor coagulation and flocculation effect in existing integrated water treatment systems, this disclosure provides an integrated flocculation and coagulation tank, including a tank body. The inlet end of the tank body is provided with a coagulation zone 1. The coagulation zone 1 is provided with a flocculation zone 2 and a sedimentation zone 3 that are interconnected along the water flow direction. A coagulation efficiency improvement structure 11 is installed in the coagulation zone 1 to cause different water flows to collide and form turbulence to facilitate mixing. A flocculation efficiency improvement structure 21 is fixedly installed in the flocculation zone 2 to cause the water flow to turn around and be diverted for discharge.

[0027] In the water treatment process, wastewater is transported using any existing equipment or structure capable of driving liquids. In this embodiment, a water pump is used to transport the wastewater to coagulation zone 1. A coagulant is then added to coagulation zone 1 to neutralize the negative charge on the surface of suspended particles or colloids in the wastewater, causing them to lose stability and collide and aggregate to form micro-flocs (clumps). The coagulant and wastewater collide through the coagulation enhancement structure 11, creating turbulence and allowing for thorough mixing. This improves the mixing effect of the coagulant and wastewater, thereby enhancing the coagulation effect. After entering flocculation zone 2 from coagulation zone 1, the micro-flocs are linked together by the addition of a flocculant to form large-volume flocs. Wastewater containing micro-flocs enters flocculation zone 2 and is circulated through the flocculation enhancement structure 21, saving space, extending the water residence time, and enhancing particle collision, thus improving the flocculation treatment effect. The large-volume flocs then enter sedimentation zone 3 for sedimentation and are subsequently discharged.

[0028] The coagulation efficiency improvement structure 11 includes an inlet 111, a first injection port 112, an energy-dissipating coagulation plate 113, and a variable speed agitator 114. The coagulation zone 1 has parallel inlet 111 and first injection port 112 fixedly installed near the bottom. The energy-dissipating coagulation plate 113 is fixedly installed on the bottom of the coagulation zone 1 away from the inlet 111. The variable speed agitator 114 is fixedly installed above the coagulation zone 1.

[0029] After wastewater enters the coagulation zone 1 through inlet 111 via a pump and pipeline (as in existing technology), wastewater and coagulant are respectively introduced through parallel inlet 111 and first injection port 112. The wastewater and flocculant flow in parallel towards the energy-dissipating coagulation plate 113, which blocks the wastewater and coagulant, thus eliminating their kinetic energy. Simultaneously, the wastewater and coagulant collide with the energy-dissipating coagulation plate 113, generating turbulence. This turbulence enhances the mixing effect between the wastewater and coagulant, thereby improving the coagulation effect. As the wastewater and coagulant flow towards the flocculation zone 2 after contacting the energy-dissipating coagulation plate 113, they also come into contact with the variable-speed agitator 114, further enhancing the mixing effect.

[0030] The water inlet 111 and the first filling port 112 are arranged in parallel in either the horizontal or vertical direction.

[0031] It should be noted that the variable speed mixer 114 uses a variable speed motor to drive the mixing blades to rotate, which facilitates variable speed mixing and enhances its adaptability in use.

[0032] The energy-dissipating concrete slab 113 includes an inclined energy-dissipating slab 1131 and a horizontal slab 1132. The inclined energy-dissipating slab 1131 is fixedly installed at the bottom of the concrete zone 1, and the horizontal slab 1132 is fixedly installed above the inclined energy-dissipating slab 1131. The length of the horizontal slab 1132 is less than the side length of the concrete zone 1, forming an opening 115.

[0033] During the parallel flow of wastewater and coagulant towards the energy-dissipating coagulation plate 113, the wastewater and coagulant first come into contact with the inclined energy-dissipating plate 1131 and are guided by the inclined energy-dissipating plate 1131 to flow uphill towards the horizontal plate 1132, thereby dissipating the kinetic energy input by the wastewater and coagulant. Then, the wastewater and coagulant flow along the inclined energy-dissipating plate 1131 to the horizontal plate 1132 and collide with the horizontal plate 1132 to generate turbulence. This prolongs the flow and mixing contact time during the uphill flow of the wastewater and coagulant, and enhances the turbulence and shear force to promote particle dispersion and mixing with the coagulant, thereby improving the mixing effect of the wastewater and coagulant.

[0034] After the wastewater and coagulant flow through the inclined energy dissipation plate 1131 and the horizontal plate 1132, they flow upward through the opening 115 on the side of the horizontal plate 1132. After passing through the horizontal plate 1132, the opening 115 can accelerate the mixing and shorten the reaction time by utilizing the narrowing flow channel. At the same time, it can also promote particle collision and floc formation.

[0035] A connecting port 116 is provided above the side of the coagulation zone 1, and the other end of the connecting port 116 is located at the center of the flocculation zone 2. A second injection port 22 with the vertical connecting port 116 is fixedly installed near the bottom of the center of the flocculation zone 2. After coagulation, the micro-flocculation particles are input into the center of the flocculation zone 2 through the connecting port 116 by a water pump in the prior art. At the same time, the second injection port 22 can be used to input flocculant, so that the flocculant and the wastewater containing micro-flocculation particles will impact each other when they are input, which is conducive to the thorough mixing of the wastewater containing micro-flocculation particles and the flocculant.

[0036] The flocculation efficiency improvement structure 21 includes a baffle plate 211 and a baffle plate 213. A baffle plate 211 forming a rotating flow channel 212 is fixedly installed in the flocculation zone 2, and multiple baffle plates 213 are fixedly installed at intervals in the baffle plate 211.

[0037] During the mixing of wastewater containing micro-flocs and flocculant, the particles move along the baffles 211 forming the rotating flow channel 212. This rotating flow channel 212 extends the mixing path and time, improving the mixing effect. Furthermore, the rotation and turning generate local turbulence, disrupting the steady flow and increasing the collision frequency between particles. This enhanced particle collision facilitates more efficient particle aggregation into larger flocs, thus improving the flocculation effect. Simultaneously, as the wastewater and flocculant move along the baffles 211 forming the rotating flow channel 212, they come into contact with the turbulence plates 213. These turbulence plates further disturb the flow, creating turbulence. This irregular turbulent flow complicates the trajectory of suspended particles, increasing the number of effective collisions between particles. This further enhances the particle collision effect on top of the rotating flow, thus improving the flocculation effect.

[0038] A flow divider 214 is fixedly installed on the inner wall of the flocculation zone 2 near the end of the baffle 211.

[0039] After the wastewater and flocculant are fully mixed and flocculated by the diversion plate 214 and leave the baffle plate 211, the flocculated wastewater will come into contact with the diversion plate 214, thus diverting the wastewater to both sides of the flocculation zone 2 for discharge. The flocculated wastewater can enter the sedimentation zone 3 through both sides of the flocculation zone 2, thereby dispersing the water flow impact force, which helps to maintain a stable water flow and improve the flocculation and sedimentation effect. In addition, the diversion discharge can flexibly adjust the flow rate, so that when the flow rate is large, it can be diverted through multiple outflow branches, and when the flow rate is small, the diversion channel can be closed to reduce energy consumption and operating costs.

[0040] The cross-sectional area of ​​the rotary flow channel 212 increases along the water flow direction. This increasing cross-sectional area allows the wastewater flow velocity to continuously decrease; that is, the wastewater flow velocity is lower at locations with larger cross-sectional areas than at locations with smaller cross-sectional areas. This continuous reduction in turbulence facilitates the natural aggregation of suspended particles, forming larger and denser flocs. This allows for phased control of the mixing intensity between flocculation and wastewater, achieving gradient control that meets the staged requirements of the flocculation reaction and improves subsequent sedimentation efficiency.

[0041] A collection hopper 31 is fixedly installed at the bottom of the sedimentation zone 3, and an inclined sedimentation plate 32 is fixedly installed on the outlet side of the sedimentation zone 3, the inclined sedimentation plate 32 being 20-60°.

[0042] After the wastewater in the flocculation zone 2 is flocculated by the baffle plate 211 and the turbulence plate 213, it enters the sedimentation zone 3 from both sides of the flocculation zone 2 through the diversion plate 214. Then the wastewater will pass through the inclined sedimentation plate 32 and be discharged through the outlet. Thus, when the flocculated wastewater passes through the inclined sedimentation plate 32, it will overflow in an incline. As a result, the large flocs after flocculation cannot cross the inclined sedimentation plate 32 due to their own weight, thus ensuring that the large flocs after flocculation can settle in the sedimentation zone 3 to a limited extent and fall into the collection hopper 31 at the bottom for collection by their own weight.

[0043] It should be noted that the large volume flocs deposited in the collection hopper 31 can be discharged by any method in the prior art that can discharge flocs. For example, a sludge discharge valve can be fixedly installed at the bottom of the collection hopper 31, and the flocs in the collection hopper can be discharged by opening and closing the sludge discharge valve. In addition, the flocs can also be discharged by a sludge scraper or a sludge suction machine, which will not be elaborated on here.

[0044] During the wastewater treatment process, after the wastewater enters the coagulation zone 1 through the inlet 111, the parallel inlet 111 and the first injection port 112 respectively input wastewater and coagulant, and the wastewater and flocculant flow in parallel to the energy dissipation coagulation plate 113. During the parallel flow of wastewater and coagulant towards the energy-dissipating coagulation plate 113, the wastewater and coagulant first come into contact with the inclined energy-dissipating plate 1131 and are guided by it to flow uphill towards the horizontal plate 1132, thereby dissipating the kinetic energy input by the wastewater and coagulant. Then, the wastewater and coagulant flow along the inclined energy-dissipating plate 1131 to the horizontal plate 1132 and collide with the horizontal plate 1132 to generate turbulence. This uphill flow of the wastewater and coagulant prolongs the flow and mixing contact time, enhances turbulence and shear force to promote particle dispersion and mixing with the coagulant, thereby improving the mixing effect of the wastewater and coagulant and eliminating the kinetic energy in the wastewater and coagulant, thus improving the coagulation effect.

[0045] After the wastewater and coagulant flow through the inclined energy dissipation plate 1131 and the horizontal plate 1132, they flow upward through the opening 115 on the side of the horizontal plate 1132. After passing through the horizontal plate 1132, the flow through the opening 115 utilizes the contracting flow channel to accelerate mixing and shorten the reaction time. At the same time, it can also promote particle collision and floc formation.

[0046] As the wastewater and coagulant flow from the energy-dissipating coagulation plate 113 to the flocculation zone 2, they will also come into contact with the variable speed agitator 114, thereby further improving the mixing effect between the wastewater and the coagulant through the variable speed agitator 114.

[0047] After coagulation, the wastewater containing tiny flocs is fed into the center of the flocculation zone 2 through the connecting port 116. At the same time, the second injection port 22 can be used to inject flocculant, so that the flocculant and the wastewater containing tiny flocs will impact each other when they are injected, which is conducive to the thorough mixing of the wastewater containing tiny flocs and the flocculant.

[0048] During the mixing process of wastewater containing micro-flocs and flocculant in flocculation zone 2, the particles move along the baffles 211 forming the rotating flow channel 212. This rotating flow channel 212 extends the mixing path and time, improving the mixing effect. Furthermore, the rotation and turning of the flow channel generates local turbulence, disrupting the steady flow and increasing the collision frequency between particles. This enhanced particle collision facilitates more efficient particle aggregation into larger flocs, thereby improving the flocculation effect. Simultaneously, as the wastewater containing micro-flocs and flocculant move along the baffles 211 forming the rotating flow channel 212, they come into contact with the baffles 213. The baffles 213 further disturb the flow, creating turbulence. This irregular turbulent flow complicates the trajectory of suspended particles, increasing the number of effective collisions between particles. This further enhances the particle collision effect on top of the rotating flow, thus improving the flocculation effect. Furthermore, the rotating channel 212, with its cross-sectional area increasing along the water flow direction, can continuously reduce the wastewater flow velocity, thereby achieving low turbulence and facilitating the natural aggregation of suspended particles to form larger and denser flocs. This allows for phased control of the mixing intensity between flocculation and wastewater, meeting the phased requirements of the flocculation reaction and improving subsequent sedimentation efficiency.

[0049] After the wastewater and flocculant are fully mixed and flocculated, leaving the baffle plate 211, the flocculated wastewater will come into contact with the diversion plate 214, thus diverting the wastewater to both sides of the flocculation zone 2 for discharge. The flocculated wastewater can enter the sedimentation zone 3 through both sides of the flocculation zone 2, thereby dispersing the water flow impact force, which helps to maintain a stable water flow and improve the flocculation and sedimentation effect. In addition, the diversion discharge can flexibly adjust the flow rate, so that when the flow rate is large, it can be diverted through multiple outflow branches, and when the flow rate is small, the diversion channel can be closed to reduce energy consumption and operating costs.

[0050] After the wastewater in the flocculation zone 2 is flocculated by the baffle plate 211 and the turbulence plate 213, it enters the sedimentation zone 3 from both sides of the flocculation zone 2 through the diversion plate 214. Then the wastewater will pass through the inclined sedimentation plate 32 and be discharged through the outlet. Thus, when the flocculated wastewater passes through the inclined sedimentation plate 32, it will overflow in an incline. As a result, the large flocs after flocculation cannot cross the inclined sedimentation plate 32 due to their own weight, thus ensuring that the large flocs after flocculation can settle in the sedimentation zone 3 to a limited extent and fall into the collection hopper 31 at the bottom for collection by their own weight.

[0051] The wastewater is discharged after sedimentation in sedimentation zone 3, thus completing the wastewater treatment process.

[0052] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flocculation-coagulation integrated tank, comprising a tank body, characterized in that: The pool body is provided with a coagulation zone (1) at the water inlet end. The coagulation zone (1) is provided with a flocculation zone (2) and a sedimentation zone (3) that are interconnected along the water flow direction. The coagulation zone (1) is equipped with a coagulation efficiency improvement structure (11) that causes different water flows to collide and form turbulence for easy mixing. The flocculation zone (2) is fixedly equipped with a flocculation efficiency improvement structure (21) that causes the water flow to turn back and divert and be discharged.

2. The flocculation-coagulation integrated tank according to claim 1, characterized in that: The coagulation efficiency improvement structure (11) includes an inlet (111), a first injection port (112), an energy-dissipating coagulation plate (113), and a variable speed agitator (114). The coagulation zone (1) is fixedly installed with parallel inlets (111) and first injection ports (112) near the bottom. The energy-dissipating coagulation plate (113) is fixedly installed on the bottom side of the coagulation zone (1) away from the inlet (111). The variable speed agitator (114) is fixedly installed above the coagulation zone (1).

3. The flocculation and coagulation integrated tank according to claim 2, characterized in that: The energy dissipation slab (113) includes an inclined energy dissipation slab (1131) and a horizontal slab (1132). The inclined energy dissipation slab (1131) is fixedly installed at the bottom of the slab zone (1), and the horizontal slab (1132) is fixedly installed above the inclined energy dissipation slab (1131). The length of the horizontal slab (1132) is less than the side length of the slab zone (1) to form an opening (115).

4. The flocculation-coagulation integrated tank according to claim 1, characterized in that: A connecting port (116) is provided on the upper side of the coagulation zone (1). The other end of the connecting port (116) is located at the center of the flocculation zone (2). A second injection port (22) is fixedly installed opposite to the connecting port (116).

5. The flocculation-coagulation integrated tank according to claim 1, characterized in that: The flocculation efficiency improvement structure (21) includes a baffle plate (211) and a baffle plate (213). A baffle plate (211) forming a rotating flow channel (212) is fixedly installed in the flocculation zone (2). Multiple baffle plates (213) are fixedly installed at intervals in the baffle plate (211).

6. The flocculation-coagulation integrated tank according to claim 5, characterized in that: A flow divider (214) is fixedly installed on the inner wall of the flocculation zone (2) near the end of the baffle plate (211).

7. The flocculation-coagulation integrated tank according to claim 6, characterized in that: The diameter of the rotary channel (212) increases along the direction of water flow.

8. The flocculation-coagulation integrated tank according to claim 1, characterized in that: A collection hopper (31) is fixedly installed at the bottom of the sedimentation zone (3), and an inclined sedimentation plate (32) is fixedly installed on the outlet side of the sedimentation zone (3).

Images