CN115650418B - Sludge screening device and system - Google Patents
Sludge screening device and systemInfo
- Publication number
- CN115650418B CN115650418B CN202211279128.7A CN202211279128A CN115650418B CN 115650418 B CN115650418 B CN 115650418B CN 202211279128 A CN202211279128 A CN 202211279128A CN 115650418 B CN115650418 B CN 115650418B
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- CN
- China
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- sludge
- screening
- area
- grids
- filler
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Treatment Of Sludge (AREA)
Abstract
本发明涉及水处理技术领域，具体涉及一种污泥筛选装置及系统，污泥筛选装置包括主体、填料和收泥堰，主体内部为空腔，空腔内设有隔板，隔板一侧为筛选区，另一侧为浓缩区，主体底部为开口，多层填料设置在筛选区内，填料上设有多层网格，相邻层间的网格交错设置，收泥堰设置在筛选区内，位于填料上方，且收泥堰与浓缩区相连通。含有活性污泥的水体由主体底部向上流动，当水体通过填料时，由于填料上相邻层间的网格交错设置，可引导通过的水体形成旋流，将水体中比重相对较重的重质污泥拦截在筛选器之下，将轻质污泥从水体中筛选出来，改善了活性污泥的沉降比，提高了水体中重质污泥的含量，使污泥的泥龄得以延长，进一步提高了水处理的效果。
The present invention relates to the field of water treatment technology, and specifically to a sludge screening device and system. The sludge screening device includes a main body, a filler, and a sludge collecting weir. The interior of the main body is a cavity, and a partition is provided in the cavity. One side of the partition is a screening area, and the other side is a concentration area. The bottom of the main body is open, and multiple layers of filler are provided in the screening area. The filler is provided with multiple layers of grids, and the grids between adjacent layers are staggered. The sludge collecting weir is provided in the screening area, located above the filler, and the sludge collecting weir is connected to the concentration area. Water containing activated sludge flows upward from the bottom of the main body. When the water passes through the filler, due to the staggered arrangement of the grids between adjacent layers on the filler, the water passing through can be guided to form a vortex, intercepting heavy sludge with relatively heavy specific gravity in the water below the filter, and screening out light sludge from the water, thereby improving the sedimentation ratio of the activated sludge, increasing the content of heavy sludge in the water, extending the sludge age, and further improving the effect of water treatment.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a sludge screening device and system.
Background
The activated sludge process is a biological treatment technology for wastewater, and is a main method for biological treatment of wastewater with activated sludge as a main body. This technique mixes and agitates the wastewater with activated sludge and aerates the wastewater to decompose organic contaminants in the wastewater, the biosolids are then separated from the treated wastewater, and a portion may be returned to the aeration tank as desired. The activated sludge inhabits the microbiota mainly containing zoogloea, has strong capability of adsorbing and oxidizing organic matters, and utilizes biological condensation, adsorption and oxidation of the activated sludge to decompose and remove organic pollutants in sewage.
In the prior art, the activated sludge used for water treatment is mixed with light sludge, and the adsorptivity and the oxidability of the light sludge are weak, so that the water treatment effect is poor.
Disclosure of Invention
Therefore, the invention aims to overcome the defect that the water treatment effect is poor due to the fact that light sludge is mixed in sludge used for water treatment in the prior art.
In order to solve the technical problems, the invention provides a sludge screening device, which comprises:
The device comprises a main body, wherein a cavity is formed in the main body, a partition plate is arranged in the cavity, one side of the partition plate is a screening area, the other side of the partition plate is a concentration area, and the bottom of the main body is an opening;
The packing, the multilayer of said packing is set up in the said screening area, there are multilayer grids on the said packing, the said grid between the adjacent layers is staggered;
The mud collecting weir is arranged in the screening area and is positioned above the filler, and the mud collecting weir is communicated with the concentration area.
Further, in the sludge screening device, the grid is polygonal.
Further, in the sludge screening device, the grid end is aligned with the grid center position of the adjacent layer.
Further, the grid of the sludge screening device is hexagonal, two short sides of the hexagon are parallel and equal in length, and the other four sides of the hexagon are parallel and equal in length.
Further, the sludge screening device is characterized in that a concentration hopper is arranged in the concentration area and is suitable for concentrating sludge.
Further, this mud sieving mechanism still includes:
The screening area and the upper end of the concentration area are respectively provided with a water outlet pipe, and the water outlet pipe is positioned above the mud collecting weir.
Further, in the sludge screening device, a sludge discharge pipe is arranged at the bottom of the concentration hopper.
Further, in the sludge screening device, the filler is a high polymer material.
The invention also provides a sludge screening system which comprises the sludge screening device.
Further, this sludge screening system still includes:
The biochemical pond, the mud sieving mechanism sets up in the biochemical pond, the main part bottom with the biochemical pond is linked together.
The technical scheme of the invention has the following advantages:
1. The invention provides a sludge screening device which comprises a main body, a filler and a sludge collecting weir, wherein a cavity is formed in the main body, a partition plate is arranged in the cavity, one side of the partition plate is a screening area, the other side of the partition plate is a concentrating area, the bottom of the main body is an opening, a plurality of layers of fillers are arranged in the screening area, a plurality of layers of grids are arranged on the filler, grids between adjacent layers are arranged in a staggered manner, the sludge collecting weir is arranged in the screening area and is positioned above the filler, and the sludge collecting weir is communicated with the concentrating area.
When the water body passes through the filler, the grids between adjacent layers on the filler are staggered, so that the water body which can be guided to pass through forms rotational flow, heavy sludge with relatively heavy specific gravity in the water body 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 receiving weir under the action of gravity and flows into the concentration area, so that the light sludge can be screened out from the water body, the sedimentation 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, and the water treatment effect is further improved.
2. According to the sludge screening device provided by the invention, the grid ends are aligned with the grid center positions of the adjacent layers, so that the grids between the adjacent layers are uniformly and alternately arranged, when a water body flows upwards from the grid at the bottom layer, the upward water flow is divided into a plurality of strands by the grids which are arranged in a staggered way, the flowing water body is disturbed by the grids at the plurality of layers, the water body which is guided to pass through the grids is lifted to form rotational flow, so that heavy sludge can naturally subside, light sludge is lifted to a sludge collecting weir along with the water flow to flow into a concentration zone, the sedimentation ratio of 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 sludge screening device has the advantages of simple structure and obvious treatment effect.
3. According to the sludge screening device provided by the invention, the concentration hopper is arranged in the concentration area, and the light sludge collected by the sludge collecting weir flows into the concentration hopper in the concentration area for concentration, so that the concentrated sludge can be reused conveniently, and the utilization rate of the sludge is improved.
4. According to the sludge screening device provided by the invention, the upper ends of the screening area and the concentration area are respectively provided with the water outlet pipes, the water outlet pipes are positioned above the sludge collecting weir, and lighter water flow rises to the water outlet pipes to be discharged along with the light sludge falling into the sludge collecting weir and the concentration bucket under the action of gravity.
5. The invention provides a sludge screening system which comprises a sludge screening device and a biochemical tank, wherein the sludge screening device is arranged in the biochemical tank, and the sludge screening device is communicated with the biochemical tank.
The water body containing the activated sludge in the biochemical tank 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 tank for water treatment again, so that the content of the heavy sludge in the water body is improved, and light sludge with relatively light specific gravity is screened into 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 that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
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 the packing in the sludge screening apparatus provided in embodiment 1 of the present invention;
FIG. 3 is a top view of a single layer of mesh in the sludge screening apparatus according to 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 according to 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 according to embodiment 3 of the present invention;
fig. 8 is a front view of a mud screening system provided in an embodiment of the present invention.
The reference numerals indicate 1, a main body, 11, a partition board, 12, a screening area, 13, a concentration area, 2, a filler, 21, a grid, 3, a mud collecting weir, 31, a mud collecting pipe, 4, a concentration hopper, 41, a mud discharging pipe, 5, a water outlet pipe, 6 and a biochemical pool.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured 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, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
As shown in fig. 1, the sludge screening device provided by the invention comprises a main body 1, a filler 2 and sludge receiving weirs 3, wherein a cavity is formed in the main body 1, a partition plate 11 is arranged in the cavity, one side of the partition plate 11 is provided with a screening area 12, the other side of the partition plate is provided with a concentration area 13, the bottom of the main body 1 is provided with an opening, a plurality of layers of filler 2 are arranged in the screening area 12, a plurality of layers of grids 21 are arranged on the filler 2, the grids 21 between adjacent layers are arranged in a staggered manner, a plurality of sludge receiving weirs 3 are arranged in the screening area 12 and are positioned above the filler 2, a sludge receiving pipe 31 is connected below the sludge receiving weirs 3, and the sludge receiving pipe 31 is communicated with the concentration area 13.
The filler 2 is not particularly limited in this embodiment, and four layers of the mesh 21 are provided on the filler 2 in this embodiment to conform to the actual situation.
The filler 2 is made of a polymer material, and specifically, in this embodiment, 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, as the grids 21 between adjacent layers on the filler 2 are staggered, the water body which can be guided to pass through forms rotational flow, heavy sludge with relatively large specific gravity and dense 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, filiform bacteria and the like flows upwards along with the water flow direction and falls into the sludge receiving weir 3 under the action of gravity and then flows into the concentration zone 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 sedimentation ratio of the sludge is improved, the microorganism concentration in the water body is increased, the sludge age of the sludge is prolonged, and the biological denitrification and dephosphorization effects in the water treatment are improved.
As shown in fig. 2 and 3, the grids 21 of the filler 2 are polygonal, the ends of the grids 21 are aligned with the central positions of the grids 21 of the adjacent layers, so that the grids 21 between the adjacent layers are uniformly and alternately arranged, when a water body flows upwards from the bottom grid 21, the upward water flow is divided into multiple strands by the grids 21 which are alternately arranged, the flowing water body is disturbed by the multiple layers of grids 21, the water body which is guided to pass through forms rotational flow, so that heavy sludge can naturally settle, 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 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, the grid 21 in this embodiment is hexagonal, two short sides of the hexagon are parallel and have equal length, and the other four sides are parallel and have equal length.
As shown in fig. 1, a concentration hopper 4 is disposed in the concentration zone 13, a sludge discharge pipe 41 is disposed at the bottom of the concentration hopper 4, and light sludge collected by the sludge collecting weir 3 flows into the concentration hopper 4 in the concentration zone 13 for concentration, and the concentrated sludge can be reused after being output by the sludge discharge pipe 41, so that 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 positioned above the sludge collecting weir 3, and the lighter water flow rises to the water outlet pipe 5 for discharging as the light sludge falls into the sludge collecting weir 3 and the concentration hopper 4 under the action of gravity. The water outlet pipes 5 are 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-described embodiment in that the mesh 21 in the present embodiment has an equilateral triangle shape, 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 embodiment in that the mesh 21 is square in shape in the present embodiment, in which the vertices of one layer of mesh 21 coincide with the center of the mesh 21 of an adjacent layer.
Example 4
As shown in fig. 8, the present invention provides a sludge screening system, which adopts the sludge screening device in the above embodiment, and further comprises a biochemical tank 6, wherein the biochemical tank 6 is filled with sewage containing activated sludge, the sludge screening device is arranged in the biochemical tank 6, and the bottom of the screening area of the main body 1 is communicated with the biochemical tank 6.
The water body containing the activated sludge in the biochemical tank 6 is conveyed to the sludge screening device from the bottom of the screening area of the main body 1, the heavy sludge with relatively large specific gravity and dense specific gravity in the water body is intercepted at the bottom of the main body 1 by the sludge screening device, loose light sludge such as flocculent sludge, free bacteria, filiform bacteria and the like with relatively light specific gravity flows upwards along with the flow direction of water, and falls into the sludge receiving weir 3 under the action of gravity and 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 sedimentation ratio of the sludge is improved, the concentration of microorganisms in the water body is increased, the sludge age of the sludge is prolonged, and the biological denitrification and dephosphorization effects in the water treatment are improved.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (6)
1. The utility model provides a mud screening system, its characterized in that includes mud sieving mechanism and biochemical pond (6), mud sieving mechanism sets up in biochemical pond (6), mud sieving mechanism includes:
The biochemical pond comprises a main body (1), wherein a cavity is formed in the main body, a partition plate (11) is arranged in the cavity, a screening area (12) is arranged on one side of the partition plate (11), a concentration area (13) is arranged on the other side of the partition plate, an opening is formed in the bottom of the main body (1), and the bottom of the main body (1) is communicated with the biochemical pond (6);
The packing (2) is arranged in the screening area (12), four layers of grids (21) are arranged on the packing (2), the grids (21) between adjacent layers are arranged in a staggered mode, the grids (21) are polygonal, and the end parts of the grids (21) are aligned with the central positions of the grids (21) of the adjacent layers;
The mud collecting weir (3) is arranged in the screening area (12) and is positioned above the packing (2), and the mud collecting weir (3) is communicated with the concentration area (13).
2. Sludge screening system according to claim 1, characterized in that the grid (21) is hexagonal, two short sides of the hexagon being parallel and of equal length, the remaining four sides being parallel and of equal length.
3. Sludge screening system according to claim 2, characterized in that a concentration hopper (4) is arranged in the concentration zone (13), adapted to concentrate the sludge.
4. A sludge screening system as claimed in claim 3, further comprising:
the screening area (12) and the upper end of the concentration area (13) are respectively provided with a water outlet pipe (5), and the water outlet pipe (5) is positioned above the mud collecting weir (3).
5. The sludge screening system as claimed in claim 4, wherein the bottom of the concentration hopper (4) is provided with a sludge discharge pipe (41).
6. The sludge screening system as claimed in claim 5, wherein the filler (2) is a polymeric material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211279128.7A CN115650418B (en) | 2022-10-19 | 2022-10-19 | Sludge screening device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211279128.7A CN115650418B (en) | 2022-10-19 | 2022-10-19 | Sludge screening device and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115650418A CN115650418A (en) | 2023-01-31 |
| CN115650418B true CN115650418B (en) | 2025-08-29 |
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ID=84990145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211279128.7A Active CN115650418B (en) | 2022-10-19 | 2022-10-19 | Sludge screening device and system |
Country Status (1)
| Country | Link |
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| CN (1) | CN115650418B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108654151A (en) * | 2018-05-29 | 2018-10-16 | 北京中地加荷环境工程有限公司 | Energy-saving and water-saving is without mechanical agitation increment upgrading microvovtex coagulating sedimentation clarifying basin |
| CN112707505A (en) * | 2020-12-15 | 2021-04-27 | 北京工业大学 | Anaerobic ammonia oxidation reaction system based on granular sludge enhanced separation device and operation method |
| CN218262140U (en) * | 2022-10-19 | 2023-01-10 | 恩格拜(北京)生态科技有限公司 | Sludge screening device and system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202054715U (en) * | 2011-05-04 | 2011-11-30 | 陈凯华 | Activated sludge screening and separating device |
| CN214130492U (en) * | 2020-11-26 | 2021-09-07 | 重庆市排水有限公司 | Sewage filtering tank |
| CN114716116A (en) * | 2022-05-24 | 2022-07-08 | 湖南五方环境科技研究院有限公司 | Sewage treatment system and method based on low-speed cyclone separation |
-
2022
- 2022-10-19 CN CN202211279128.7A patent/CN115650418B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108654151A (en) * | 2018-05-29 | 2018-10-16 | 北京中地加荷环境工程有限公司 | Energy-saving and water-saving is without mechanical agitation increment upgrading microvovtex coagulating sedimentation clarifying basin |
| CN112707505A (en) * | 2020-12-15 | 2021-04-27 | 北京工业大学 | Anaerobic ammonia oxidation reaction system based on granular sludge enhanced separation device and operation method |
| CN218262140U (en) * | 2022-10-19 | 2023-01-10 | 恩格拜(北京)生态科技有限公司 | Sludge screening device and system |
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| CN115650418A (en) | 2023-01-31 |
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