Sludge densification, concentration and screening device

Abstract

The utility model relates to the technical field of sewage treatment, and provides a sludge densification, concentration and screening device which comprises a body which is of a vertical tank-shaped structure, and a mixing area, a sludge curing area and a settling area are sequentially arranged in the body along a flowing path of a water body; the baffling assembly is arranged between the outlet of the mixing area and the inlet of the sludge curing area, the baffling assembly at least comprises first channels for guiding water to flow in the first direction and second channels for guiding the water to flow in the direction opposite to the first direction, and the first channels and the second channels are sequentially and alternately arranged. According to the sludge densification, concentration and screening device provided by the utility model, the hydraulic path is prolonged by utilizing the first channel and the second channel which are sequentially and alternately arranged in the baffling assembly, and the sludge collision probability can be increased and the mixing effect can be improved when water repeatedly reverses between the first channel and the second channel, so that the sludge is favorably gathered and densified; the sludge concentration effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sludge densification, concentration and screening device. Background Art

[0002] The existing sludge densification, concentration and screening device mainly includes a mixing zone, a sludge maturation zone and a sedimentation zone along the flow path of the water body. After the external water enters, it is stirred and mixed in the mixing zone to aggregate and densify the sludge. The formed mature sludge enters the sludge maturation zone, and finally precipitates and separates in the sedimentation zone. The supernatant and the sludge are screened to achieve sludge concentration. However, in the existing sludge densification, concentration and screening device, the hydraulic path between the mixing zone and the sludge maturation zone is short, and part of the sludge in the mixing zone is transported to the sludge maturation zone before it is aggregated and densified, resulting in poor sludge concentration effect. Utility Model Content

[0003] Therefore, the technical problem to be solved by the utility model is that the hydraulic path between the mixing zone and the sludge maturation zone in the existing sludge densification, concentrating and screening device is relatively short, and part of the sludge in the mixing zone is transported to the sludge maturation zone before it is aggregated and densified, resulting in poor sludge concentration effect, thereby providing a sludge densification, concentrating and screening device.

[0004] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0005] The utility model discloses a sludge densification, concentration and screening device, comprising: a main body, which is a vertical tank-shaped structure, wherein a mixing zone, a sludge maturation zone and a sedimentation zone are sequentially arranged along the flow path of a water body in the main body; and further comprising: a baffle assembly, which is arranged between the outlet of the mixing zone and the inlet of the sludge maturation zone, wherein the baffle assembly at least comprises a first channel for guiding the water body to flow in a first direction, and a second channel for guiding the water body to flow in a direction opposite to the first direction, wherein the first channel and the second channel are alternately arranged in sequence.

[0006] Furthermore, a first ring-shaped member and a second ring-shaped member are arranged in the main body, the first ring-shaped member and the second ring-shaped member are arranged concentrically, and the first ring-shaped member is located in the inner circle; the inner circle space of the first ring-shaped member forms the mixing zone; the space between the first ring-shaped member and the second ring-shaped member forms the sludge maturation zone; the space between the second ring-shaped member and the main body forms the sedimentation zone; the deflection assembly is arranged in the interval between the bottom of the first ring-shaped member and the inner bottom wall of the second ring-shaped member, and the deflection assembly connects the mixing zone and the sludge maturation zone.

[0007] Furthermore, the sludge densification, concentration and screening device also includes a throat and a nozzle; the throat is arranged in the mixing zone; the bottom of the second annular member is a funnel-shaped structure, the small mouth end of the funnel-shaped structure faces the throat, and a return port is left between the two; the nozzle is arranged in the sedimentation zone, the nozzle extends into the large mouth end of the funnel-shaped structure, and the external water enters the throat through the nozzle and the funnel-shaped structure, and the water is released to the mixing zone at the top of the throat, a part of the water in the mixing zone enters the throat through the return port, and another part of the water enters the sludge maturation zone through the deflection assembly.

[0008] Furthermore, the first channel and the second channel are channels arranged obliquely downward relative to the first annular member.

[0009] Furthermore, the deflector assembly also includes a third channel arranged parallel to the throat, and a guide plate is arranged at the entrance of the third channel. The guide plate is arranged obliquely downward relative to the first annular member, and the guide plate is used to guide the water in the mixing zone into the third channel; the outlet of the third channel is connected to the entrance of the first first channel upstream.

[0010] Furthermore, an inclined tube separation device is provided in the sedimentation zone for separating sludge from the supernatant.

[0011] Furthermore, the sludge densification, concentration and screening device also includes a water collecting trough and a water collecting pipe; the water collecting trough is arranged on the inner wall of the first annular member, and the outlet of the water collecting trough is used to discharge the supernatant; one end of the water collecting pipe is connected to the water collecting trough, and the other end extends into the sedimentation area and is located downstream of the inclined tube separation device, and is used to collect the supernatant in the sedimentation area.

[0012] Furthermore, the sludge densification, concentration and screening device also includes an emptying pipe, one end of which is connected to the bottom of the sludge maturation zone, and the other end of which extends outward to the outside of the main body.

[0013] Furthermore, the sludge densification, concentration and screening device also includes a sludge discharge pipe, one end of which is connected to the bottom of the sedimentation area, and the other end of which extends outward to the outside of the body.

[0014] Furthermore, the main body is a vertical round tank structure.

[0015] The technical solution of the utility model has the following advantages:

[0016] The utility model provides a sludge densification, concentration and screening device, in which a baffle assembly is arranged between the outlet of the mixing zone and the inlet of the sludge maturation zone, and the hydraulic path is extended by utilizing the first channel and the second channel which are alternately arranged in sequence in the baffle assembly. When the water body repeatedly switches between the first channel and the second channel, the probability of sludge collision can be increased, thereby improving the mixing effect, being beneficial to sludge aggregation and densification, and improving the sludge concentration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of a sludge density concentration and screening device in one embodiment of the utility model.

[0019] Description of reference numerals:

[0020] 1. Main body; 2. Mixing zone; 3. Sludge maturation zone; 4. Sedimentation zone; 5. Baffle assembly; 6. First channel; 7. Second channel; 8. Third channel; 9. Guide plate; 10. First annular member; 11. Second annular member; 12. Throat; 13. Nozzle; 14. Funnel-shaped structure; 15. Water inlet pipe; 16. Oblique pipe separation device; 17. Water collecting trough; 18. Water collecting pipe; 19. Drain pipe; 20. Sludge discharge pipe. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] like Figure 1 As shown, a sludge densification and concentrating screening device in this embodiment comprises: a body 1, which is a vertical round can-shaped structure, wherein a mixing zone 2, a sludge maturation zone 3 and a sedimentation zone 4 are sequentially arranged along the flow path of the water body in the body 1; and further comprises: a baffle assembly 5, which is arranged between the outlet of the mixing zone 2 and the inlet of the sludge maturation zone 3, wherein the baffle assembly 5 at least comprises a first channel 6 for guiding the water body to flow in a first direction, and a second channel 7 for guiding the water body to flow in a direction opposite to the first direction, wherein the first channel 6 and the second channel 7 are alternately arranged in sequence. For example, the baffle assembly 5 may have a plurality of plates arranged in parallel and spaced apart, wherein the space between the plates forms the first channel 6 or the second channel 7, wherein the water body changes direction after flowing to the outlet of the first channel 6 and enters the second channel 7 completely, and then changes direction again after flowing to the outlet of the second channel 7 and enters the first channel 6 downstream, and after repeated reciprocation for many times, on the one hand, the hydraulic path is extended, and on the other hand, the collision probability is increased during the repeated reversal of the water body. The number of the first channel 6 and the second channel 7 can be designed according to the demand. For example, the baffle assembly 5 can be designed according to the arrangement of the first channel 6, the second channel 7 and the first channel 6. For example, the baffle assembly 5 can also be designed according to the arrangement of the first channel 6, the second channel 7, the first channel 6, the second channel 7 and the first channel 6, and so on.

[0026] The sludge densification, concentration and screening device provided in this embodiment has a baffle assembly 5 between the outlet of the mixing zone 2 and the inlet of the sludge maturation zone 3. The first channel 6 and the second channel 7 alternately arranged in the baffle assembly 5 are used to extend the hydraulic path. When the water body repeatedly switches between the first channel 6 and the second channel 7, the probability of sludge collision can be increased, thereby improving the mixing effect, which is beneficial to sludge aggregation and densification and improving the sludge concentration effect.

[0027] Among them, a first ring-shaped member 10 and a second ring-shaped member 11 are arranged in the main body 1, the first ring-shaped member 10 and the second ring-shaped member 11 are arranged concentrically, and the first ring-shaped member 10 is located in the inner circle; the axial dimension of the second ring-shaped member 11 is smaller than the axial dimension of the first ring-shaped member 10, and the inner circle space of the first ring-shaped member 10 forms an annular mixing zone 2; the space between the first ring-shaped member 10 and the second ring-shaped member 11 forms an annular sludge maturation zone 3; the space between the second ring-shaped member 11 and the main body 1 forms an annular sedimentation zone 4; the deflector assembly 5 is arranged in the interval between the bottom of the first ring-shaped member 10 and the inner bottom wall of the second ring-shaped member 11, and the deflector assembly 5 connects the mixing zone 2 and the sludge maturation zone 3.

[0028] Among them, the sludge densification, concentration and screening device also includes a throat 12 and a nozzle 13; the throat 12 is concentrically arranged with the first ring member 10 in the mixing zone 2; the bottom of the second ring member 11 is a funnel-shaped structure 14, the small mouth end of the funnel-shaped structure 14 faces the throat 12, and a return water port is left between the two; the nozzle 13 is arranged in the sedimentation zone 4, the nozzle 13 extends into the large mouth end of the funnel-shaped structure 14, and the nozzle 13 transports the external water into the throat 12 through the nozzle 13 and the funnel-shaped structure 14 through the water inlet pipe 15, and the water is released to the mixing zone 2 at the top of the throat 12, a part of the water in the mixing zone 2 enters the throat 12 through the return water port, and the other part of the water enters the sludge maturation zone 3 through the deflection component 5.

[0029] The baffle assembly 5 further includes a third channel 8 arranged parallel to the throat 12, and a guide plate 9 is arranged at the entrance of the third channel 8 to prevent the water in the mixing zone 2 from directly entering the third channel 8 during the falling process. The guide plate 9 is arranged obliquely downward relative to the first annular member 10, and the guide plate 9 is used to guide the water in the mixing zone 2 to enter the third channel 8 obliquely upward. In addition, the guide plate can guide the water to the return water port; the outlet of the third channel 8 is connected to the entrance of the first first channel 6 upstream. Such an arrangement increases the difficulty of the water in the mixing zone 2 entering the baffle assembly 5, ensures effective water return at the return water port, and prolongs the time of the water in the mixing zone 2.

[0030] The first channel 6 and the second channel 7 are both channels arranged obliquely downward relative to the first annular member 10. For example, the first channel and the second channel can be designed to be parallel to the guide plate. In this way, the first channel 6 and the second channel 7 will not have dead corner deposition, and can also be full flow without gas accumulation.

[0031] Among them, an inclined tube separation device 16 is arranged near the top of the main body 1 in the sedimentation area 4. When the water in the sedimentation area 4 passes through the inclined tube separation device 16 upward, the sludge in the supernatant can be separated to ensure clear effluent.

[0032] The sludge densification, concentration and screening device further includes a water collecting tank 17 and a water collecting pipe 18; the water collecting tank 17 is arranged on the inner wall of the first annular member 10, and the outlet of the water collecting tank 17 can discharge the supernatant liquid out of the body 1 through the connected outlet pipe; one end of the water collecting pipe 18 is connected to the water collecting tank 17, and the other end extends into the sedimentation area 4 and is located downstream of the inclined tube separation device 16, and is used to collect the supernatant liquid in the sedimentation area 4. The water collecting pipe 18 is provided with a water collecting hole, and the supernatant liquid infiltrates into the water collecting pipe 18 through the water collecting hole.

[0033] The sludge densification, concentration and screening device further comprises an emptying pipe 19 , one end of which is connected to the bottom of the sludge maturation zone 3 , and the other end of which extends outward to the outside of the main body 1 , for emptying the sludge in the sludge maturation zone 3 .

[0034] The sludge densification, concentration and screening device further comprises a sludge discharge pipe 20 , one end of which is connected to the bottom of the sedimentation area 4 , and the other end of which extends outward to the outside of the main body 1 , for discharging the sludge in the sedimentation area 4 .

[0035] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A sludge density concentration screening device, characterized in that: include: The main body (1) is a vertical tank-shaped structure, wherein a mixing zone (2), a sludge maturation zone (3) and a sedimentation zone (4) are sequentially arranged along the flow path of the water body in the main body (1); and further comprising: The baffle assembly (5) is arranged between the outlet of the mixing zone (2) and the inlet of the sludge maturation zone (3), and the baffle assembly (5) comprises at least a first channel (6) for guiding the water body to flow in a first direction, and a second channel (7) for guiding the water body to flow in a direction opposite to the first direction, and the first channel (6) and the second channel (7) are arranged alternately in sequence.

2. The sludge density concentration and screening device according to claim 1 is characterized in that: A first annular component (10) and a second annular component (11) are arranged in the body (1), the first annular component (10) and the second annular component (11) are arranged concentrically, and the first annular component (10) is located in the inner ring; The inner ring space of the first annular member (10) forms the mixing zone (2); The space between the first annular member (10) and the second annular member (11) forms the sludge maturation zone (3); The space between the second annular member (11) and the body (1) forms the sedimentation zone (4); The deflector assembly (5) is arranged in the interval between the bottom of the first annular member (10) and the inner bottom wall of the second annular member (11), and the deflector assembly (5) connects the mixing zone (2) and the sludge maturation zone (3).

3. The sludge density concentration and screening device according to claim 2 is characterized in that: It also includes a throat (12) and a nozzle (13); The throat (12) is arranged in the mixing zone (2); The bottom of the second annular member (11) is a funnel-shaped structure (14), the small opening of the funnel-shaped structure (14) faces the throat (12), and a water return port is left between the two; The nozzle (13) is arranged in the sedimentation zone (4), and the nozzle (13) extends into the large mouth of the funnel-shaped structure (14). External water enters the throat (12) through the nozzle (13) and the funnel-shaped structure (14), and the water is released to the mixing zone (2) at the top of the throat (12). A part of the water in the mixing zone (2) enters the throat (12) through the return port, and another part of the water enters the sludge maturation zone (3) through the baffle assembly (5).

4. The sludge density concentration and screening device according to claim 3 is characterized in that: The first channel (6) and the second channel (7) are channels arranged obliquely downward relative to the first annular member (10).

5. The sludge density concentration and screening device according to claim 4 is characterized in that: The baffle assembly (5) further comprises a third channel (8) arranged parallel to the throat (12); a guide plate (9) is arranged at the entrance of the third channel (8); the guide plate (9) is arranged obliquely downward relative to the first annular member (10); the guide plate (9) is used to guide the water in the mixing zone (2) to enter the third channel (8); The outlet of the third channel (8) is communicated with the inlet of the first upstream first channel (6).

6. The sludge density concentration and screening device according to claim 2, characterized in that: An inclined tube separation device (16) is provided in the sedimentation zone (4) for separating sludge from the supernatant.

7. The sludge density concentration and screening device according to claim 6, characterized in that: It also includes a water collecting tank (17) and a water collecting pipe (18); The water collecting tank (17) is arranged on the inner wall of the first annular member (10), and the outlet of the water collecting tank (17) is used to discharge the supernatant; One end of the water collecting pipe (18) is connected to the water collecting tank (17), and the other end extends into the sedimentation zone (4) and is located downstream of the inclined tube separation device (16) for collecting the supernatant in the sedimentation zone (4).

8. The sludge density concentration and screening device according to claim 2, characterized in that: It also includes an emptying pipe (19), one end of which is connected to the bottom of the sludge maturation zone (3) and the other end of which extends outward to the outside of the main body (1).

9. The sludge density concentration and screening device according to claim 1, characterized in that: It also comprises a mud discharge pipe (20), one end of which is connected to the bottom of the sedimentation area (4) and the other end of which extends outward to the outside of the body (1).

10. The sludge density concentration and screening device according to claim 1, characterized in that: The main body (1) is a vertical round tank structure.

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