Sewage flocculation sedimentation tank

Abstract

The utility model discloses a sewage flocculation sedimentation tank which comprises a mixing tank, an inclined plate flocculation tank is arranged on one side of the mixing tank, a flocculation pipe is arranged in the inclined plate flocculation tank, the mixing tank is communicated with the flocculation pipe through a connecting pipe, the lower end of the flocculation pipe is communicated with the inclined plate flocculation tank, an inclined plate is arranged in the middle of the interior of the inclined plate flocculation tank, and the lower end of the flocculation pipe is communicated with the inclined plate flocculation tank. The inclined plate is arranged on the outer side of the flocculation pipe, and the water outlet end of the flocculation pipe is located below the inclined plate. Compared with the prior art in which the mixing tank is directly connected with the inclined plate flocculation tank, the water flow propelling path is prolonged by arranging the flocculation pipe, namely, the flocculation time of suspended matters in water is prolonged, so that the flocculation effect of the suspended matters in the water is improved; and the volume of small flocculates which are not precipitated is further increased through the inclined plate, so that the flocculates are precipitated under the action of gravity.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sewage flocculation sedimentation tank. Background Art

[0002] Flocculation and sedimentation treatment refers to the water treatment process in which flocculants cause suspended particles in the water to coagulate and precipitate. After the coagulant is added to the water, the colloids and dispersed particles of the suspended matter collide with each other and coagulate to form flocs due to the effect of molecular attraction. During the sedimentation process, the size and mass continue to increase, and the sedimentation rate increases with the depth. At this time, the removal rate of suspended matter depends not only on the particle sedimentation rate, but also on the depth of the sedimentation tank. The flocculation process is divided into two types: free flocculation and contact flocculation. The former occurs in the sedimentation tank, while the latter occurs in the suspension clarification tank or contact filter tank. The alum flowers formed after the addition of coagulants to the surface water, the suspended organic matter in the domestic sewage, the activated sludge in the biochemical treatment, etc., all belong to flocculation precipitation in the water.

[0003] Existing treatment units often use folded plate flocculation sedimentation tanks, which are composed of a mixing tank, a folded plate flocculation tank, a transition zone, and a horizontal flow sedimentation tank. The folded plate flocculation tank and the horizontal flow sedimentation tank have good flocculation and separation effects, but the size of the device is too large and the investment cost is high, which is not suitable for use in small sites. There are also small flocculation sedimentation tanks in the prior art, but most of them have a short flocculation sedimentation time and poor flocculation effect, resulting in low water treatment quality. Utility Model Content

[0004] The purpose of the utility model is to provide a sewage flocculation sedimentation tank to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sewage flocculation sedimentation tank, comprising: a mixing tank, a sloping plate flocculation tank is arranged on one side of the mixing tank, a flocculation tube is arranged in the sloping plate flocculation tank, the mixing tank is connected to the flocculation tube through a connecting tube, the lower end of the flocculation tube is connected to the sloping plate flocculation tank, an sloping plate is arranged in the middle position of the sloping plate flocculation tank, the sloping plate is arranged on the outside of the flocculation tube, and the water outlet end of the flocculation tube is located below the sloping plate.

[0006] Furthermore, a partition is arranged in the mixing tank to form a transition tank and a stirring zone, and the connection between the stirring zone and the transition tank is located at the bottom of the mixing tank, and the transition tank is connected to the flocculation tube through a connecting pipe.

[0007] Furthermore, two folding plates are arranged in the transition pool.

[0008] Furthermore, a stirring mechanism is provided in the stirring zone.

[0009] Furthermore, the lower end of the flocculation tube is trumpet-shaped.

[0010] Furthermore, a counterweight block is fixedly connected to the lower end of the flocculation tube.

[0011] Furthermore, a sludge collecting bin is fixedly connected to the bottom of the inclined plate flocculation tank, and a sludge pipe is arranged at the bottom of the sludge collecting bin.

[0012] Furthermore, a raw water pipe is provided on the side of the mixing tank, and a flocculant filling mechanism is provided on the raw water pipe.

[0013] Furthermore, a plurality of water collecting tanks are arranged in the inclined plate flocculation tank, and a filter screen is arranged in the water collecting tank.

[0014] In the above technical scheme, the utility model provides a sewage flocculation sedimentation tank with the beneficial effects of:

[0015] Compared with the prior art in which the mixing tank is directly connected to the inclined plate flocculation tank, the utility model provides a flocculation tube, thereby extending the distance of water flow propulsion, that is, extending the flocculation time of suspended matter in the water, thereby improving the flocculation effect of the suspended matter in the water, and further increasing the volume of unprecipitated small pieces of flocculants through the inclined plate so that they are precipitated under the action of gravity.

[0016] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0017] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic structural diagram of an embodiment of the utility model is provided.

[0020] Description of reference numerals:

[0021] 1. Mixing tank; 11. Raw water pipe; 2. Transition tank; 21. Folding plate; 3. Inclined plate flocculation tank; 4. Connecting pipe; 5. Stirring mechanism; 6. Sludge collection bin; 61. Sludge pipe; 7. Flocculation pipe; 71. Counterweight; 8. Inclined plate; 9. Water collecting tank; 91. Filter screen; 10. Flocculant filling mechanism. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0023] See also Figure 1 A sewage flocculation sedimentation tank comprises: a mixing tank 1, a sloping plate flocculation tank 3 is arranged on one side of the mixing tank 1, a flocculation tube 7 is arranged in the sloping plate flocculation tank 3, the mixing tank 1 is connected to the flocculation tube 7 through a connecting pipe 4, the lower end of the flocculation tube 7 is connected to the sloping plate flocculation tank 3, an sloping plate 8 is arranged in the middle position of the sloping plate flocculation tank 3, the sloping plate 8 is arranged on the outside of the flocculation tube 7, and the water outlet end of the flocculation tube 7 is located below the sloping plate 8.

[0024] Specifically, compared with the prior art in which the mixing tank 1 is directly connected to the inclined plate flocculation tank 3, the utility model prolongs the distance of water flow propulsion, that is, prolongs the flocculation time of suspended matter in the water, thereby improving the flocculation effect of the suspended matter in the water, and further increases the volume of the unprecipitated small pieces of flocculants through the inclined plate 8 so that they are settled under the action of gravity.

[0025] Furthermore, a partition is arranged in the mixing tank 1 to form a transition tank 2 and a stirring zone, and the connection between the stirring zone and the transition tank 2 is located at the bottom of the mixing tank 1 , and the transition tank 2 is connected to the flocculation tube 7 through a connecting pipe 4 .

[0026] Specifically, the mixing tank 1 is divided into a stirring zone and a transition tank 2 by a partition. After the flocculant and raw water are mixed in the stirring zone, they enter the transition tank 2, which can gradually stabilize the water and reduce the flow rate of the water entering the flocculation tube 7, thereby extending the flocculation time of suspended matter in the water and improving the flocculation effect.

[0027] Furthermore, two folding plates 21 are arranged in the transition pool 2 .

[0028] Specifically, by arranging two folding plates 21 in the transition tank 2, the folding plates 21 are snapped into the transition tank 2, so that the propulsion stroke of water is extended, and the flocculation time of suspended matter is extended. The bending part of the folding plates 21 can be used to intercept water, slow down the flow rate of water flow, and further extend the flocculation time of suspended matter. At the same time, the flocculation of suspended matter can be promoted by changing the direction of water flow, thereby improving the flocculation effect of water and greatly improving the water treatment quality.

[0029] Furthermore, a stirring mechanism 5 is provided in the stirring zone.

[0030] Specifically, the stirring mechanism 5 includes a driving motor and a stirring paddle. The driving motor is installed on the top of the mixing tank 1. The driving motor drives the stirring paddle to mix the raw water and flocculant in the stirring zone. The installation method and operating principle of the driving motor are common knowledge known to the staff in this field and will not be explained in detail here.

[0031] Furthermore, the lower end of the flocculation tube 7 is trumpet-shaped.

[0032] Specifically, by setting the lower end of the flocculation tube 7 into a trumpet shape, the passing area of ​​the flocculation is increased, thereby preventing the flocculation from piling up when settling.

[0033] Furthermore, a counterweight 71 is fixedly connected to the lower end of the flocculation tube 7 .

[0034] Specifically, the counterweight block 71 increases the weight of the flocculation tube 7 to prevent the flocculation tube 7 from being affected by buoyancy, and the upper end of the flocculation tube 7 is mounted on the top of the inclined plate flocculation tank 3 .

[0035] Furthermore, a sludge collecting bin 6 is fixedly connected to the bottom of the inclined plate flocculation tank 3 , and a sludge pipe 61 is provided at the bottom of the sludge collecting bin 6 .

[0036] Specifically, the flocculants are precipitated in the sludge collecting bin 6 to form sludge, which is discharged through the sludge pipe 61. The sludge pipe 61 can be connected to an external sludge suction device.

[0037] Furthermore, a raw water pipe 11 is provided on the side of the mixing tank 1 , and a flocculant filling mechanism 10 is provided on the raw water pipe 11 .

[0038] Specifically, the raw water pipe 11 is connected to the mixing tank 1 , the raw water enters the mixing tank 1 from the raw water pipe 11 , the flocculant filling mechanism 10 is connected to the raw water pipe 11 , and the flocculant is added into the raw water through the flocculant filling mechanism 10 .

[0039] Furthermore, a plurality of water collecting tanks 9 are provided in the inclined plate flocculation tank 3 , and a filter screen 91 is provided in the water collecting tank 9 .

[0040] Specifically, the filter screen 91 is detachably installed in the water collection tank 9, and the clean water in the upper layer of the inclined plate flocculation tank 3 is filtered by the filter screen 91 in the water collection tank 9 and then discharged.

[0041] In the present invention, the flow direction of water is Figure 1In the direction of the arrow in the figure, the water first enters the stirring zone through the raw water pipe 11, and is stirred by the stirring mechanism 5 to mix the raw water and the flocculant. The water flows into the transition tank 2 and is blocked by the folding plate 21, thereby changing the direction of the water flow and extending the water flow propulsion stroke, thereby extending the flocculation time of the suspended matter in the water, and then enters the flocculation pipe 7 through the connecting pipe 4. Under the action of gravity and water flow power, the flocculants sink, and finally the unprecipitated small flocculants pass through the inclined plate 8 and flocculate into large flocculants and settle in the sludge collection bin 6. Then the treated water is discharged through the sump 9.

[0042] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A sewage flocculation sedimentation tank, comprising: A mixing tank (1), characterized in that: an inclined plate flocculation tank (3) is arranged on one side of the mixing tank (1), a flocculation tube (7) is arranged in the inclined plate flocculation tank (3), the mixing tank (1) is connected to the flocculation tube (7) through a connecting tube (4), the lower end of the flocculation tube (7) is connected to the inclined plate flocculation tank (3), an inclined plate (8) is arranged in the middle position of the inclined plate flocculation tank (3), the inclined plate (8) is arranged on the outside of the flocculation tube (7), and the water outlet end of the flocculation tube (7) is located below the inclined plate (8).

2. A sewage flocculation sedimentation tank according to claim 1, characterized in that: A partition is arranged in the mixing tank (1) to form a transition tank (2) and a stirring zone, and the connection point between the stirring zone and the transition tank (2) is located at the bottom of the mixing tank (1), and the transition tank (2) and the flocculation tube (7) are connected via a connecting pipe (4).

3. A sewage flocculation sedimentation tank according to claim 2, characterized in that: Two folding plates (21) are arranged in the transition pool (2).

4. A sewage flocculation sedimentation tank according to claim 2, characterized in that: A stirring mechanism (5) is arranged in the stirring zone.

5. A sewage flocculation sedimentation tank according to claim 1, characterized in that: The lower end of the flocculation tube (7) is trumpet-shaped.

6. A sewage flocculation sedimentation tank according to claim 5, characterized in that: A counterweight (71) is fixedly connected to the lower end of the flocculation tube (7).

7. A sewage flocculation sedimentation tank according to claim 1, characterized in that: The bottom of the inclined plate flocculation tank (3) is fixedly connected to a sludge collection bin (6), and the bottom of the sludge collection bin (6) is provided with a sludge pipe (61).

8. The sewage flocculation sedimentation tank according to claim 1, characterized in that: A raw water pipe (11) is arranged on the side of the mixing tank (1), and a flocculant filling mechanism (10) is arranged on the raw water pipe (11).

9. The sewage flocculation sedimentation tank according to claim 1, characterized in that: A plurality of water collecting tanks (9) are arranged in the inclined plate flocculation tank (3), and a filter screen (91) is arranged in the water collecting tank (9).

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