A concentric circle coagulation and sedimentation integrated device

Abstract

The present invention relates to the technical field of sewage treatment, and specifically discloses a concentric circle coagulation and sedimentation integrated device, comprising a coagulation zone, a flocculation zone and a sedimentation zone, wherein the coagulation zone is a cylindrical structure with a sealed bottom, the flocculation zone and the sedimentation zone are both annular structures, arranged outside the coagulation zone, and the coagulation zone is at the center of the annulus; an agitator is arranged in the coagulation zone, and the agitator is provided with a motor; a water inlet pipe is arranged at the bottom of the coagulation zone, and a diversion hole is arranged at the top of the coagulation zone; a guide plate is arranged in the flocculation zone, and the guide plate divides the flocculation zone into a first flocculation zone and a second flocculation zone; the first flocculation zone and the coagulation zone share a wall, and the second flocculation zone and the sedimentation zone share a wall; an inclined tube sedimentation zone is provided in the sedimentation zone, the sedimentation zone and the second flocculation zone are connected to each other, and a sludge hopper is provided at the bottom of the sedimentation zone; the present invention fully utilizes hydraulic kinetic energy, saves stirring energy consumption, has a compact layout, reduces floor space, and is convenient for inspection, maintenance and cleaning.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, in particular to a concentric circle type coagulation and sedimentation integrated device. Background Art

[0002] Coagulation and sedimentation is a relatively mature method in wastewater treatment. The treatment process primarily consists of coagulation, flocculation, and sedimentation. By adding appropriate reagents, the colloidal double layer in the water is compressed and destabilized during the coagulation phase, forming smaller particles. During the flocculation phase, the particles continue to aggregate, hydrolyze, and condense to form polymers, which then undergo adsorption and bridging to form larger flocs. Finally, under certain sedimentation conditions, this technology is removed. Compared to other technologies, this technology offers simpler equipment, better treatment results, shorter residence times, and a smaller footprint.

[0003] The current macroscopic water flow direction of coagulation and sedimentation sewage treatment is mostly linear, that is, the coagulation zone and flocculation zone are arranged in sequence, and the sedimentation zone is arranged after the flocculation zone or set up separately. Moreover, when the raw water quality is poor, the inclined pipe is prone to blockage. Summary of the Invention

[0004] The purpose of the present invention is to provide a concentric circle coagulation and sedimentation integrated device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a concentric circle coagulation and sedimentation integrated device, comprising a coagulation zone, a flocculation zone and a sedimentation zone, the coagulation zone being a cylindrical structure with a sealed bottom, the flocculation zone and the sedimentation zone both being annular structures, both being arranged outside the coagulation zone, with the coagulation zone being at the center of the annulus; an agitator being provided in the coagulation zone, and the agitator being provided with a motor; a water inlet pipe being provided at the bottom of the coagulation zone, and a diversion hole being provided at the top of the coagulation zone; a guide plate being fixedly provided in the flocculation zone, and the guide plate dividing the flocculation zone into a first flocculation zone and a second flocculation zone; the first flocculation zone and the coagulation zone share a common wall, and the second flocculation zone and the sedimentation zone share a common wall; an inclined tube sedimentation zone being provided in the sedimentation zone, the sedimentation zone and the second flocculation zone being connected to each other, and a sludge hopper being provided at the bottom of the sedimentation zone.

[0006] Preferably, one end of the guide plate is connected to the outer wall of the coagulation zone through an arc plate, and the other end of the guide plate is fixedly connected to the outer wall of the flocculation zone through a baffle.

[0007] Preferably, the angle between the arc plate and the circular outer wall of the coagulation zone is 15°, the guide plate is a five-sixths arc, and the baffle and the outer wall of the flocculation zone are perpendicular to each other.

[0008] Preferably, a gap is left at the bottom of the outer wall of the flocculation zone, and the sedimentation zone is connected with the second flocculation zone through the gap.

[0009] Preferably, the water inlet pipe is tangent to the circular outer wall of the coagulation zone, and the stirring water flow direction of the agitator is countercurrent to the tangential water inlet direction.

[0010] Preferably, the sedimentation area is a five-sixths arc structure, and the other one-sixth arc is the water outlet area; the inclined tube sedimentation area is assembled from fan-shaped modules with a central angle of 60°, and there are six fan-shaped modules, five of which correspond to the five-sixths arc settings of the sedimentation area, and the other fan-shaped module is set in the water outlet area for standby.

[0011] Preferably, the inclined tube sedimentation zone uses a regular hexagonal inclined tube with an inclination angle of 60°.

[0012] Preferably, a buffer zone is provided below the inclined tube sedimentation zone, and the sludge hopper is provided at the bottom of the buffer zone, and the sludge hopper is a funnel-shaped structure.

[0013] Preferably, a circulation pump is provided outside the sedimentation zone, one end of the circulation pump is communicated with the buffer zone, and the other end of the circulation pump is communicated with the coagulation zone.

[0014] Preferably, the coagulation zone and the flocculation zone are respectively provided with a coagulant dosing pipe and a flocculant dosing pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the present invention adopts a compact annular water flow mode, fully utilizing the relationship between the annular area and the water flow velocity required in the coagulation, flocculation and sedimentation areas, thereby reducing the layout area; the inclined tubes in the sedimentation area are modularized, which is convenient for partial replacement, cleaning or maintenance during operation, and a spare inclined tube sedimentation area is provided for easy cleaning and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 A top view of the present invention;

[0018] Numbers in the figure: 1. Coagulation zone; 101. Agitator; 102. Motor; 103. Water inlet pipe; 104. Diversion hole; 2. Flocculation zone; 201. First flocculation zone; 202. Guide plate; 203. Baffle; 204. Second flocculation zone; 205. Outer wall of flocculation zone; 3. Sedimentation zone; 301. Inclined tube sedimentation zone; 302. Buffer zone; 303. Outlet zone; 304. Sludge hopper; 305. Circulation pump. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0022] See also Figure 1-2 The present invention provides a technical solution: a concentric circle coagulation and sedimentation integrated device, comprising a coagulation zone 1, a flocculation zone 2 and a sedimentation zone 3, wherein the coagulation zone 1 is a cylindrical structure with a sealed bottom, the flocculation zone 2 and the sedimentation zone 3 are both annular structures, both of which are arranged outside the coagulation zone 1, and the coagulation zone 1 is at the center of the annulus; an agitator 101 is provided in the coagulation zone 1, and the agitator 101 is provided with a motor 102; a water inlet pipe 103 is provided at the bottom of the coagulation zone 1, A guide hole 104 is provided at the top of the coagulation zone 1; a guide plate 202 is fixedly provided in the flocculation zone 2, and the guide plate 202 separates the flocculation zone 2 into a first flocculation zone 201 and a second flocculation zone 204; the first flocculation zone 201 shares a wall with the coagulation zone 1, and the second flocculation zone 204 shares a wall with the sedimentation zone 3; an inclined tube sedimentation zone 3 is provided in the sedimentation zone 3, and the sedimentation zone 3 and the second flocculation zone 204 are connected to each other, and a sludge hopper 304 is provided at the bottom of the sedimentation zone 3.

[0023] Furthermore, one end of the guide plate 202 is connected to the outer wall of the coagulation zone 1 through an arc plate, and the other end of the guide plate 202 is fixedly connected to the outer wall 205 of the flocculation zone through a baffle 203 .

[0024] Furthermore, the angle between the arc plate and the circular outer wall of the coagulation zone 1 is 15°, the guide plate 202 is a five-sixths arc, and the baffle 203 and the outer wall 205 of the flocculation zone are perpendicular to each other.

[0025] Furthermore, a gap is left at the bottom of the outer wall 205 of the flocculation zone, and the sedimentation zone 3 is connected to the second flocculation zone 204 through the gap.

[0026] Furthermore, the water inlet pipe 103 is tangent to the circular outer wall of the coagulation zone 1 , and the stirring water flow direction of the agitator 101 is countercurrent to the tangential water inlet direction.

[0027] Furthermore, the sedimentation area 3 is a five-sixths arc structure, and the other one-sixth arc is the water outlet area 303; the inclined tube sedimentation area 301 is assembled from fan-shaped modules with a central angle of 60°, and there are six fan-shaped modules, five of which correspond to the five-sixths arc settings of the sedimentation area 3, and the other fan-shaped module is set in the water outlet area 303 for standby.

[0028] Furthermore, the inclined tube sedimentation zone 301 uses a regular hexagonal inclined tube with an inclination angle of 60°.

[0029] Furthermore, a buffer zone 302 is provided below the inclined tube sedimentation zone 301 , and the sludge hopper 304 is provided at the bottom of the buffer zone 302 . The sludge hopper 304 is a funnel-shaped structure.

[0030] Furthermore, a circulation pump 305 is provided outside the sedimentation zone 3 , one end of the circulation pump 305 is communicated with the buffer zone 302 , and the other end of the circulation pump 305 is communicated with the coagulation zone 1 .

[0031] Furthermore, the coagulation zone 1 and the flocculation zone 2 are respectively provided with a coagulant dosing pipe and a flocculant dosing pipe.

[0032] Working Principle: Sewage enters coagulation zone 1 from the bottom through water inlet pipe 103 along the tangent of the coagulation zone's circular wall. Motor 102 drives agitator 101, which stirs the sewage, ensuring a thorough reaction with the coagulant added via the coagulant dosing pipe. Sewage then enters flocculation zone 2 through diversion holes 104 at the top, first entering first flocculation zone 201. The sewage in flocculation zone 2 moves in a circular motion, with the starting end of guide plate 202 forming a 15° angle with the tangent of the outer cylindrical wall of coagulation zone 1. Upon encountering baffle 203, the sewage enters second flocculation zone 204 from first flocculation zone 201. The outer wall 205 of the flocculation zone shares a common wall with sedimentation zone 3, allowing the sewage to enter sedimentation zone 3 evenly through the gap at the bottom of the outer wall 205. Settling zone 3 includes an inclined tube settling zone 301, which consists of six sector-shaped modules with a central angle of 60°. These modules can be installed and removed as a whole. The settling zone is in the form of a 5 / 6 ring, with five sector-shaped modules installed. The sector corresponding to the remaining 1 / 6 of the circle in settling zone 3 serves as the outlet zone 303, with the remaining sector-shaped module also provided as a backup. The inclined tubes are hexagonal in shape and have a 60° inclination angle. A buffer zone is provided below the inclined tube settling zone 301, allowing water to enter the outlet zone 303 from both ends of the individually placed sector-shaped modules.

[0033] The separately placed fan-shaped modules can replace the blocked modules during operation, giving the blocked modules enough time to be cleaned. The sludge hopper 304 collects the settled flocs in the buffer zone 302. Part of the settled flocs is discharged to the sludge treatment system outside the device, and part is sent to the coagulation zone 1 through the circulation pump 305.

[0034] The main rotational motion driven by agitator 101 in coagulation zone 1 is in the same direction as the water flow in first flocculation zone 201 of flocculation zone 2. The guide plate 202 forms a certain angle with the tangent of the outer wall of coagulation zone 1, which facilitates the flocculation swirl. This saves on agitation equipment in flocculation zone 2 and fully utilizes the hydraulic agitation energy of coagulation zone 1 to form flocs in contact with the flocculant, which is added to flocculation zone 2 via a dosing pipe.

[0035] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A concentric circle coagulation and sedimentation integrated device, characterized by: The invention comprises a coagulation zone (1), a flocculation zone (2) and a sedimentation zone (3), wherein the coagulation zone (1) is a cylindrical structure with a sealed bottom, the flocculation zone (2) and the sedimentation zone (3) are both annular structures, both of which are arranged outside the coagulation zone (1), and the coagulation zone (1) is located at the center of the annulus; an agitator (101) is arranged in the coagulation zone (1), and the agitator (101) is provided with a motor (102); a water inlet pipe (103) is arranged at the bottom of the coagulation zone (1), and a diversion hole (104) is arranged at the top of the coagulation zone (1). A guide plate (202) is fixedly provided in the flocculation zone (2), and the guide plate (202) divides the flocculation zone (2) into a first flocculation zone (201) and a second flocculation zone (204); the first flocculation zone (201) and the coagulation zone (1) share a wall, and the second flocculation zone (204) and the sedimentation zone (3) share a wall; an inclined tube sedimentation zone (301) is provided in the sedimentation zone (3), the sedimentation zone (3) and the second flocculation zone (204) are connected to each other, and a sludge hopper (304) is provided at the bottom of the sedimentation zone (3); One end of the guide plate (202) is connected to the outer wall of the coagulation zone (1) via an arc plate, and the other end of the guide plate (202) is fixedly connected to the outer wall (205) of the flocculation zone via a baffle (203); The angle between the arc plate and the circular outer wall of the coagulation zone (1) is 15 degrees, the guide plate (202) is a five-sixths arc, and the baffle (203) and the outer wall (205) of the flocculation zone are perpendicular to each other; A gap is left at the bottom of the outer wall (205) of the flocculation zone, and the sedimentation zone (3) is connected to the second flocculation zone (204) through the gap.

2. The concentric circle coagulation and sedimentation integrated device according to claim 1, characterized in that: The water inlet pipe (103) is tangent to the circular outer wall of the coagulation zone (1), and the stirring water flow direction of the stirrer (101) is countercurrent to the tangential water inlet direction.

3. The concentric circle coagulation and sedimentation integrated device according to claim 1, characterized in that: The sedimentation zone (3) is a five-sixths arc structure, and the other one-sixth arc is the water outlet zone (303); the inclined tube sedimentation zone (301) is assembled from fan-shaped modules with a central angle of 60°, and there are six fan-shaped modules, five of which correspond to the five-sixths arc of the sedimentation zone (3), and the other fan-shaped module is set in the water outlet zone (303) for standby.

4. The concentric circle coagulation and sedimentation integrated device according to claim 1, characterized in that: The inclined tube sedimentation zone (301) uses a regular hexagonal inclined tube with an inclination angle of 60°.

5. The concentric circle coagulation and sedimentation integrated device according to claim 1, characterized in that: A buffer zone (302) is provided below the inclined tube sedimentation zone (301), and the sludge hopper (304) is provided at the bottom of the buffer zone (302). The sludge hopper (304) is a funnel-shaped structure.

6. The concentric circle coagulation and sedimentation integrated device according to claim 5, characterized in that: A circulation pump (305) is provided outside the sedimentation zone (3), one end of the circulation pump (305) is communicated with the buffer zone (302), and the other end is communicated with the coagulation zone (1).

7. The concentric circle coagulation and sedimentation integrated device according to claim 1, characterized in that: The coagulation zone (1) and the flocculation zone (2) are respectively provided with a coagulant dosing pipe and a flocculant dosing pipe.

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