Novel coagulating sedimentation device for water treatment

Abstract

The utility model discloses a novel coagulative precipitation device for water treatment, which comprises a tank body, a hydraulic mixing device, an inclined plate filler, a water outlet weir plate, a water pipeline, a water outlet pipeline, a sludge discharge pipeline and a dosing pipeline, the sludge discharge pipeline is mounted on the lower side wall of the tank body, the inclined plate filler is fixedly mounted in the tank body, and the water outlet weir plate is fixedly mounted in the tank body. A hydraulic mixing device is fixedly mounted in the center of the inclined plate filler, a water inlet pipe and a dosing pipe are respectively arranged on the side end face of the upper end of the hydraulic mixing device, a water outlet weir plate is fixedly mounted on the side wall of the tank body above the inclined plate filler, and a water outlet pipe is fixedly mounted on the side wall of the tank body in the water outlet weir plate; according to the utility model, the hydraulic mixing device can be used for carrying out energy dissipation treatment on inlet water and medicaments, so that the water inlet pressure energy is prevented from being too large to damage alumen ustum formed in the coagulative precipitation tank, and the hydraulic mixing device cannot damage the alumen ustum generated by the coagulation reaction, so that the generated large-particle suspended matters can have a higher removal effect in the precipitation tank.

Description

Technical Field

[0001] The utility model relates to the field of water treatment equipment, in particular to a novel coagulation and sedimentation device for water treatment. Background Art

[0002] In water treatment projects, water treatment processes are often divided into physical and chemical pretreatment, biochemical treatment and deep treatment. In physical and chemical treatment and deep treatment, coagulation and sedimentation processes are often used to remove suspended matter and heavy metal substances in water. It mainly involves adding chemical agents to aggregate colloidal particles and tiny suspended matter in the water to form larger particles, and then separating these particles from the water through gravity. Coagulation and sedimentation include two processes: coagulation and flocculation:

[0003] Coagulation: In this process, the added coagulant destabilizes the colloidal particles, forming tiny aggregates. Coagulation primarily relies on double layer compression and adsorption charge neutralization. When an electrolyte is added to the solution, the ion concentration increases, the thickness of the diffusion layer decreases, the zeta potential of the colloidal particles decreases, and the mutual repulsion decreases, allowing the particles to rapidly coagulate.

[0004] Flocculation: During the flocculation process, destabilized colloids or fine suspended matter coalesce into larger flocs under the action of a flocculant. Flocculants are typically water-soluble, chain-like polymers that, through electrostatic forces, van der Waals forces, and hydrogen bonding, adsorb and bridge colloids and suspended particles to form larger flocs, which ultimately settle by gravity.

[0005] The commonly used coagulation method is mechanical stirring, which has the characteristics of good mixing effect and rapid mixing, but consumes a lot of energy for water treatment.

[0006] Sedimentation tanks often use vertical flow, inclined plate, horizontal flow and radial flow types. Vertical flow and inclined plate sedimentation tanks have the advantages of low energy consumption and small footprint, but low removal rate, low impact load resistance and are only suitable for small water plants. Horizontal flow and radial flow sedimentation tanks have good removal rate effects, but they occupy a large area and consume more energy, and are suitable for large and medium-sized water plants.

[0007] Therefore, there is an urgent need for a coagulation and sedimentation device with low operating cost, small footprint, strong impact load resistance and suitable for various water plants. Utility Model Content

[0008] The main purpose of the utility model is to provide a novel coagulation and sedimentation device for water treatment.

[0009] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0010] A new coagulation and sedimentation device for water treatment includes a tank body, a hydraulic mixing device, an inclined plate filler, an outlet weir, an inlet pipe, an outlet pipe, a sludge discharge pipe and a dosing pipe. A sludge discharge pipe is installed on the lower side wall of the tank body, an inclined plate filler is fixedly installed in the tank body, a hydraulic mixing device is fixedly installed at the center of the inclined plate filler, an upper end face of the hydraulic mixing device is respectively provided with an inlet pipe and a dosing pipe, an outlet weir is fixedly installed on the side wall of the tank body above the inclined plate filler, and an outlet pipe is fixedly installed on the side wall of the tank body inside the outlet weir.

[0011] Furthermore, a V-shaped slope is provided on the lower end surface of the pool body.

[0012] Furthermore, the outlet weir plate is L-shaped.

[0013] Furthermore, the hydraulic mixing device includes a main pipe, a left-rotating blade, a right-rotating blade, a water outlet bell and an upper connecting pipe. The upper and lower ends of the main pipe are fixedly connected to the upper connecting pipe and the water outlet bell respectively, and the left-rotating blade and the right-rotating blade are fixedly installed on the inner wall of the main pipe.

[0014] Furthermore, the left-rotating blades and the right-rotating blades complement each other and interfere with each other.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model adopts a coagulation sedimentation device that combines a hydraulic mixing device + vertical flow + inclined plate, which can improve the removal rate of suspended matter and heavy metal substances and has low operating costs;

[0017] The hydraulic mixing device adopts a special method of left and right rotating blades, which can achieve the characteristics of energy dissipation, energy saving and good mixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 This is a structural schematic diagram of the hydraulic mixing device of the present utility model.

[0020] Figure numerals: 1. Tank body; 2. Hydraulic mixing device; 3. Inclined plate filler; 4. Water outlet weir plate; 5. Water inlet pipe; 6. Water outlet pipe; 7. Mud discharge pipe; 8. Dosing pipe; 10. Main pipe; 11. Left-rotating blade; 12. Right-rotating blade; 13. Water outlet bell mouth; 14. Upper connecting pipe. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0022] A new coagulation and sedimentation device for water treatment includes a tank body 1, a hydraulic mixing device 2, an inclined plate filler 3, an outlet weir 4, an inlet pipe 5, an outlet pipe 6, a sludge discharge pipe 7 and a dosing pipe 8. A sludge discharge pipe 7 is installed on the lower side wall of the tank body 1, and an inclined plate filler 3 is fixedly installed in the tank body 1. The hydraulic mixing device 2 is fixedly installed at the center of the inclined plate filler 3. The upper end face of the hydraulic mixing device 2 is respectively provided with an inlet pipe 5 and a dosing pipe 8. An outlet weir 4 is fixedly installed on the side wall of the tank body 1 above the inclined plate filler 3, and an outlet pipe 6 is fixedly installed on the side wall of the tank body 1 inside the outlet weir 4.

[0023] The lower end surface of the tank body 1 is provided with a V-shaped slope.

[0024] The outlet weir plate 4 is L-shaped.

[0025] The hydraulic mixing device 2 includes a main pipe 10, a left-rotating blade 11, a right-rotating blade 12, a water outlet bell mouth 13 and an upper connecting pipe 14. The upper and lower ends of the main pipe 10 are fixedly connected to the upper connecting pipe 14 and the water outlet bell mouth 13 respectively, and the left-rotating blade 11 and the right-rotating blade 12 are fixedly installed on the inner wall of the main pipe 10.

[0026] The left-hand rotating blade 11 and the right-hand rotating blade 12 are complementary to each other.

[0027] The water is added while the water inlet pipe is taking in water, and the water and the agent are mixed in the hydraulic mixing device 2. The hydraulic mixing device 2 adopts the left and right rotating blades 12, which has the following advantages: First, it can dissipate energy of the incoming water and the agent to prevent the incoming water pressure from being too high and destroying the alum flowers formed in the coagulation sedimentation tank; second, the hydraulic mixing device 2 adopts the left and right rotating blades 12 to make the water flow streamlined, reduce the water head loss, save energy consumption, increase the mixing reaction time of the agent and water, and make the mixing reaction effect more and more uniform; third, the hydraulic mixing device 2 will not destroy the alum flowers produced by the coagulation reaction, so that the generated large-particle suspended matter can have a higher removal effect in the sedimentation tank.

[0028] The sedimentation unit in this coagulation sedimentation device adopts a process that combines vertical flow and inclined plate sedimentation tanks. When the sinking speed of suspended particles is greater than the water flow speed, the particles can be directly removed in the sedimentation tank. When the sinking speed of suspended particles is less than the water flow speed, the particles can be removed in the inclined plate, thereby improving the removal effect of the sedimentation tank.

[0029] The supernatant in the sedimentation tank enters the outlet weir plate 4 and then enters the next treatment unit through the outlet pipe, and the sludge is discharged through the sludge discharge pipe.

[0030] The tank body 1 can be made of carbon steel anti-corrosion material or reinforced concrete material, and the hydraulic mixing device 2 is made of carbon steel anti-corrosion material, which can be selected according to the quality of the wastewater and has a long service life.

[0031] The above description is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the content disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A novel coagulation and sedimentation device for water treatment, comprising a tank body (1), a hydraulic mixing device (2), an inclined plate filler (3), a water outlet weir plate (4), an inlet pipe (5), an outlet pipe (6), a sludge discharge pipe (7) and a dosing pipe (8), characterized in that: A mud discharge pipe (7) is installed on the lower side wall of the tank body (1), an inclined plate filler (3) is fixedly installed in the tank body (1), a hydraulic mixing device (2) is fixedly installed at the center of the inclined plate filler (3), and an upper end surface of the hydraulic mixing device (2) is respectively provided with a water inlet pipe (5) and a dosing pipe (8), a water outlet weir plate (4) is fixedly installed on the side wall of the tank body (1) above the inclined plate filler (3), and a water outlet pipe (6) is fixedly installed on the side wall of the tank body (1) inside the water outlet weir plate (4).

2. A novel coagulation and sedimentation device for water treatment according to claim 1, characterized in that: The lower end surface of the tank body (1) is provided with a V-shaped slope.

3. A novel coagulation and sedimentation device for water treatment according to claim 2, characterized in that: The outlet weir plate (4) is L-shaped.

4. A novel coagulation and sedimentation device for water treatment according to claim 3, characterized in that: The hydraulic mixing device (2) comprises a main pipe (10), a left-rotating blade (11), a right-rotating blade (12), a water outlet bell mouth (13) and an upper connecting pipe (14). The upper and lower ends of the main pipe (10) are respectively fixedly connected to the upper connecting pipe (14) and the water outlet bell mouth (13). The left-rotating blade (11) and the right-rotating blade (12) are fixedly installed on the inner wall of the main pipe (10).

5. A novel coagulation and sedimentation device for water treatment according to claim 4, characterized in that: The left-hand rotating blade (11) and the right-hand rotating blade (12) are complementary and interfere with each other.

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