CN218262140U

CN218262140U - Sludge screening device and system

Info

Publication number: CN218262140U
Application number: CN202222759065.7U
Authority: CN
Inventors: 李明; 冯薇; 刘勇; 王睿星
Original assignee: Engebai Beijing Ecological Technology Co ltd
Current assignee: Engebai Beijing Ecological Technology Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-01-10
Anticipated expiration: 2032-10-19

Abstract

The utility model relates to a water treatment technology field, concretely relates to mud sieving mechanism and system, mud sieving mechanism include the main part, pack and receive the mud weir, the inside cavity that is of main part is equipped with the baffle in the cavity, baffle one side is the screening district, the opposite side is the concentration zone, the main part bottom is the opening, the multilayer is packed and is set up in the screening district, be equipped with the multilayer net on the filler, the crisscross setting of net between the adjacent layer, receive the mud weir setting in the screening district, be located the packing top, and it is linked together with the concentration zone to receive the mud weir. The water containing the activated sludge flows upwards from the bottom of the main body, when the water passes through the filler, the grids between adjacent layers on the filler are arranged in a staggered manner, so that the water which can be guided to pass can form a rotational flow, heavy sludge with relatively heavy specific gravity in the water is intercepted below the screener, and light sludge is screened out from the water, thereby improving the sedimentation ratio of the activated sludge, improving the content of the heavy sludge in the water, prolonging the sludge age of the sludge and further improving the water treatment effect.

Description

Sludge screening device and system

Technical Field

The utility model relates to a water treatment technical field, concretely relates to mud sieving mechanism and system.

Background

The activated sludge process is a biological waste water treating technology, and is mainly a biological waste water treating process with activated sludge as main component. This technique mixes and agitates the wastewater with the activated sludge and aerates it to decompose the organic contaminants in the wastewater, and the biosolids are then separated from the treated wastewater and optionally partially returned to the aeration tank. The activated sludge inhabits microbial communities mainly comprising zoogloea, has strong capability of adsorbing and oxidizing organic matters, and decomposes and removes organic pollutants in the sewage by utilizing the biological coagulation, adsorption and oxidation effects of the activated sludge.

In the prior art, activated sludge used for water treatment is mixed with light sludge, and the adsorbability and the oxidability of the light sludge are weak, so that the water treatment effect is poor.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect that the effect of water treatment is poor as light sludge is mixed in the sludge used in the water treatment in the prior art.

In order to solve the technical problem, the utility model provides a sludge screening device, include:

the device comprises a main body, a screening area, a concentration area and a separation plate, wherein a cavity is formed in the main body, the separation plate is arranged in the cavity, one side of the separation plate is the screening area, the other side of the separation plate is the concentration area, and the bottom of the main body is provided with an opening;

the fillers are arranged in the screening area in multiple layers, multiple layers of grids are arranged on the fillers, and the grids between adjacent layers are arranged in a staggered mode;

and the mud collection weir is arranged in the screening area and positioned above the filler, and the mud collection weir is communicated with the concentration area.

Further, in the sludge screening device, the mesh is polygonal.

Further, in the sludge screening device, the grid end is aligned with the center of the grid of the adjacent layer.

Further, according to the sludge screening device, the grid is hexagonal, two short sides of the hexagon are parallel and equal in length, and the rest four sides are parallel in pairs and equal in length.

Furthermore, the sludge screening device is provided with a concentration hopper in the concentration area and is suitable for concentrating sludge.

Further, this sludge screening plant still includes:

and the water outlet pipe is arranged at the upper ends of the screening area and the concentration area respectively and is positioned above the sludge collecting weir.

Furthermore, the bottom of the concentration hopper of the sludge screening device is provided with a sludge discharge pipe.

Further, according to the sludge screening device, the filler is a high polymer material.

The utility model also provides a sludge screening system, including foretell sludge screening device.

Further, this sludge screening system still includes:

the sludge screening device is arranged in the biochemical tank, and the bottom of the main body is communicated with the biochemical tank.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a sludge screening device, including main part, filler and receipts mud weir, the main part is inside to be the cavity, is equipped with the baffle in the cavity, and baffle one side is screening district, and the opposite side is concentrated district, and the main part bottom is the opening, and the multilayer filler sets up in screening district, is equipped with multilayer net on the filler, and the net between the adjacent layer is crisscross to be set up, receives the mud weir setting in screening district, is located the filler top, and receives the mud weir and is linked together with concentrated district.

The water containing activated sludge flows upwards from the bottom of the main body, when the water passes through the filler, the grids between adjacent layers on the filler are arranged in a staggered manner, so that the water which can be guided to pass can form rotational flow, heavy sludge with relatively heavy specific gravity in the water is intercepted below the screener, light sludge with relatively light specific gravity rises along with water flow, and the light sludge falls into the sludge collection weir and then flows into the concentration area under the action of gravity, so that the light sludge can be screened out from the water, the sedimentation ratio of the activated sludge is improved, the content of the heavy sludge in the water is increased, the sludge age of the sludge is prolonged, and the water treatment effect is further improved.

2. The utility model provides a sludge screening device, the net tip aligns with the net central point of adjacent layer, make the even crisscross setting of net between the adjacent layer, when the water upwards flows from the bottom net, the net of crisscross setting divide into the stranded with ascending rivers, the multilayer net produces the disturbance to the water that flows, the ascending formation whirl of water that the guide passes through, make heavy matter mud can subside naturally, light weight mud then rises to receiving the mud weir flow and goes into concentrated district along with the rivers, activated sludge's settlement ratio has been improved, heavy matter mud's content in the water has been improved, make the mud age of mud prolong, the effect of water treatment has further been improved, and the sewage treatment device is simple in structure, and the treatment effect is obvious.

3. The utility model provides a mud sieving mechanism is provided with concentrated fill in the concentrated district, and the light sludge who collects through receipts mud weir flows into and concentrates behind the concentrated fill in the concentrated district, is convenient for reuse the mud after the concentration, has improved the utilization ratio of mud.

4. The utility model provides a sludge screening device, screening district and concentrated district upper end are provided with the outlet pipe respectively, and the outlet pipe is located receipts mud weir top, and along with light mud falls into under the action of gravity and receives mud weir and concentrated fill in, light rivers then rise to the outlet pipe and discharge.

5. The utility model provides a sludge screening system, including sludge screening device and biochemical pond, sludge screening device sets up in the biochemical pond, sludge screening device is linked together with biochemical pond.

The water body containing the activated sludge in the biochemical pool enters a screening area in the sludge screening device from the bottom, heavy sludge with relatively heavy specific gravity in the water body is screened out by the sludge screening device and then flows back to the biochemical pool for water treatment again, so that the content of the heavy sludge in the water body is improved, light sludge with relatively light specific gravity is screened out in a concentration area for concentration, the sludge age of the sludge is prolonged, and the water treatment effect is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of a mud screening apparatus provided in an embodiment of the present invention;

FIG. 2 is a top view of a filler in a sludge screening apparatus provided in example 1 of the present invention;

fig. 3 is a top view of a single layer of mesh in the sludge screening apparatus provided in embodiment 1 of the present invention;

FIG. 4 is a top view of the packing in the sludge screening apparatus provided in embodiment 2 of the present invention;

fig. 5 is a top view of a single layer of mesh in the sludge screening apparatus provided in embodiment 2 of the present invention;

FIG. 6 is a top view of the packing in the sludge screening apparatus provided in embodiment 3 of the present invention;

FIG. 7 is a top view of a single layer of mesh in the sludge screening apparatus provided in example 3 of the present invention;

fig. 8 is a front view of a mud screening system provided in an embodiment of the present invention.

Description of the reference numerals: 1. a main body; 11. a partition plate; 12. a screening area; 13. a concentration zone; 2. a filler; 21. a grid; 3. a mud collection weir; 31. a mud collecting pipe; 4. a concentration hopper; 41. a sludge discharge pipe; 5. a water outlet pipe; 6. a biochemical pool.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

As shown in fig. 1, for the utility model provides a pair of sludge screening device, including main part 1, pack 2 and receipts mud weir 3, the inside cavity that is of main part 1 is equipped with baffle 11 in the cavity, 11 one sides on the baffle are screening district 12, the opposite side is concentrated district 13, 1 bottom of main part is the opening, the multilayer is packed 2 and is set up in screening district 12, be equipped with multilayer net 21 on packing 2, the crisscross setting of net 21 between the adjacent layer, a plurality of receipts mud weir 3 sets up in screening district 12, be located 2 tops of packing, and receive 3 below of mud weir to be connected with receipts mud pipe 31, it is linked together with concentrated district 13 to receive mud pipe 31.

In this embodiment, the filler 2 is not specifically limited, and in order to meet the actual situation, the grid 21 on the filler 2 has four layers in total.

The filler 2 is made of a high polymer material, and specifically, in this embodiment, the material of the filler 2 is made of modified PVC (Polyvinyl Chloride).

When the water body containing the activated sludge flows upwards from the bottom of the main body 1, when the water body passes through the filler 2, the grids 21 between adjacent layers on the filler 2 are staggered, the water body which can pass through can be guided to form rotational flow, dense heavy sludge with relatively large specific gravity in the water body is intercepted below the filler 2, loose light sludge with relatively light specific gravity such as flocculent sludge, free bacteria, filamentous bacteria and the like flows upwards along with the flow direction of water, and falls into the sludge receiving weir 3 under the action of gravity and then flows into the concentration area 13, so that the light sludge can be screened out from the water body, the content of the heavy sludge in the water body is improved, the intercepted heavy sludge prefers the population of microorganisms, the sludge settlement ratio is improved, the concentration of the microorganisms in the water body is increased, the sludge age of the sludge is prolonged, and the biological nitrogen and phosphorus removal effect in water treatment is improved.

As shown in fig. 2 and 3, the grid 21 of the filler 2 is polygonal, the end of the grid 21 is aligned with the center of the grid 21 of the adjacent layer, so that the grids 21 between the adjacent layers are uniformly arranged in a staggered manner, when the water body flows upwards from the grid 21 at the bottom layer, the upwards water flow is divided into a plurality of strands by the staggered grid 21, the multilayer grid 21 disturbs the flowing water body, and the passing water body is guided to form a rotational flow, so that the heavy sludge can be naturally settled, the light sludge rises to the sludge receiving weir 3 along with the water flow and flows into the concentration area 13, the settlement ratio of the activated sludge is improved, the content of the heavy sludge in the water body is improved, the sludge age of the sludge is prolonged, the water treatment effect is further improved, and the water treatment device has the advantages of simple structure and obvious treatment effect.

As shown in fig. 3, in the present embodiment, the grid 21 is hexagonal, two short sides of the hexagon are parallel and equal in length, and the remaining four sides are parallel and equal in length.

As shown in fig. 1, a concentration hopper 4 is arranged in the concentration zone 13, a sludge discharge pipe 41 is arranged at the bottom of the concentration hopper 4, the light sludge collected by the sludge collection weir 3 flows into the concentration hopper 4 in the concentration zone 13 for concentration, the concentrated sludge can be reused after being output by the sludge discharge pipe 41, and the utilization rate of the sludge is improved.

As shown in fig. 1, the upper ends of the screening area 12 and the concentration area 13 are respectively provided with a water outlet pipe 5, the water outlet pipe 5 is located above the sludge collection weir 3, the light sludge falls into the sludge collection weir 3 and the concentration hopper 4 under the action of gravity, and the light water flow rises to the water outlet pipe 5 to be discharged. The water outlet pipe 5 is arranged at different heights, so that the height of the liquid level in the main body 1 can be controlled, and the rising water flow can be further controlled.

Example 2

As shown in fig. 4 and 5, the present embodiment is different from the above embodiments in that the mesh 21 in the present embodiment is an equilateral triangle, and the triangles of the mesh 21 between adjacent layers are arranged in opposite directions.

Example 3

As shown in fig. 6 and 7, the present embodiment is different from the above embodiments in that the mesh 21 in the present embodiment has a square shape, and the vertex of one layer of mesh 21 coincides with the center of the mesh 21 in the adjacent layer.

Example 4

As shown in FIG. 8, the utility model provides a sludge screening system has adopted the sludge screening device in the above-mentioned embodiment, still includes biochemical pond 6, has held the sewage that contains activated sludge in biochemical pond 6, and sludge screening device sets up in biochemical pond 6, main part 1 screening district bottom is linked together with biochemical pond 6.

The water body containing activated sludge in the biochemical pool 6 is conveyed to the sludge screening device from the bottom of the screening area of the main body 1, dense heavy sludge with relatively high specific gravity in the water body is intercepted at the bottom of the main body 1 through the sludge screening device, loose light sludge with relatively low specific gravity such as flocculent sludge, free bacteria, filamentous bacteria and the like flows upwards along with the flow direction of water flow and flows into the concentration area 13 after falling into the sludge receiving weir 3 under the action of gravity, so that the light sludge can be screened out from the water body, the content of the heavy sludge in the water body is increased, the intercepted heavy sludge prefers the population of microorganisms, the sludge settlement ratio is improved, the concentration of the microorganisms in the water body is increased, the sludge age of the sludge is prolonged, and the biological nitrogen and phosphorus removal effect in water treatment is improved.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A sludge screening device, comprising:

the device comprises a main body (1), wherein a cavity is formed in the main body, a partition plate (11) is arranged in the cavity, one side of the partition plate (11) is a screening area (12), the other side of the partition plate (11) is a concentration area (13), and the bottom of the main body (1) is provided with an opening;

the packing (2) is arranged in the screening area (12) in multiple layers, multiple layers of grids (21) are arranged on the packing (2), and the grids (21) between adjacent layers are arranged in a staggered mode;

and the mud collection weir (3) is arranged in the screening area (12) and positioned above the filler (2), and the mud collection weir (3) is communicated with the concentration area (13).

2. Sludge screening apparatus according to claim 1, wherein the mesh (21) is polygonal.

3. Sludge screening apparatus according to claim 2, characterized in that the grid (21) ends are aligned with the grid (21) centre position of the adjacent layer.

4. The sludge screening device according to claim 2 or 3, wherein the grid (21) is hexagonal, two short sides of the hexagon are parallel and equal in length, and the other four sides are parallel two by two and equal in length.

5. Sludge screening apparatus according to claim 4, wherein a thickening hopper (4) is arranged in the thickening zone (13) adapted to thicken the sludge.

6. The sludge screening apparatus as claimed in claim 5, further comprising:

outlet pipe (5), screening district (12) with concentrate district (13) upper end is provided with outlet pipe (5) respectively, outlet pipe (5) are located receive mud weir (3) top.

7. Sludge screening apparatus according to claim 6, characterized in that the bottom of the concentration hopper (4) is provided with a sludge discharge pipe (41).

8. The sludge screening apparatus according to claim 7, wherein the filler (2) is a polymer material.

9. A sludge screening system comprising the sludge screening apparatus according to any one of claims 1 to 8.

10. The sludge screening system of claim 9, further comprising:

the sludge screening device is arranged in the biochemical tank (6), and the bottom of the main body (1) is communicated with the biochemical tank (6).