CN219239396U

CN219239396U - Modular denitrification deep bed filter system

Info

Publication number: CN219239396U
Application number: CN202320089658.9U
Authority: CN
Inventors: 辜凡; 潘玉萍; 代金山; 吕万元; 江伟
Original assignee: Sichuan Changhe Tongchuang Environmental Technology Co ltd
Current assignee: Sichuan Changhe Tongchuang Environmental Technology Co ltd
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-06-23
Anticipated expiration: 2033-01-31

Abstract

The utility model discloses a modularized denitrification deep bed filter system, which comprises: the filter unit comprises a filter tank body, a filter material and a supporting layer; a backwash unit including a backwash mechanism; a carbon source adding unit and a power unit; the filter tank body is provided with a plurality of filter tank monomers, filter materials and supporting layers are sequentially placed in the filter tank monomers from top to bottom, the carbon source adding unit and the back flushing mechanism are respectively communicated with the filter tank monomers through pipelines, and the power unit provides power for the filter unit and the back flushing unit. When the sewage treatment device is used for small-scale sewage treatment, different modularized units are arranged, steel materials are adopted, the manufacturing period is short, the transportation is convenient, the installation is convenient, the air distribution and water distribution effects are uniform, meanwhile, the system is stable in operation and high in impact load resistance, and has multiple pollutant removal functions.

Description

Modular denitrification deep bed filter system

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a modularized denitrification deep bed filter system.

Background

The denitrification deep bed filter belongs to a treatment process of a deep treatment and filtration process in sewage treatment, and the early 70 th century of 20 th century originates from the United states. The treatment process has the advantages of concentrated functions and flexible operation, and can simultaneously play roles of physically filtering and intercepting SS (suspended substances), removing TP (total phosphorus) by chemical micro flocculation and removing TN (total nitrogen) by biological denitrification.

Generally, a large-scale sewage treatment plant needs to construct a built deep bed filter, and for a small-scale sewage treatment plant, 5000m is needed ³ And the investment of the cost of adopting the civil engineering filter is huge and the construction period is long below/d. The existing integrated denitrification deep bed filter technology can not enter the installation and the condition of uneven gas distribution in partial areas due to higher height of a deep bed filter tank body and higher transportation cost.

Disclosure of Invention

The utility model aims to provide a modularized denitrification deep bed filter system, which is assembled by modularized units manufactured by adopting a steel structure, and meanwhile, the height of a filter tank body is properly selected according to actual conditions, so that the problems that the integrated denitrification deep bed filter in a small sewage treatment field in the prior art is high in tank body height and high in transportation cost, and partial areas cannot enter installation and gas distribution is uneven are solved.

In order to solve the technical problems, the utility model adopts the following scheme:

a modular denitrification deep bed filter system comprising:

the filter unit comprises a filter tank body, a filter material and a supporting layer;

a backwash unit including a backwash mechanism;

a carbon source adding unit and a power unit;

the filter tank body is provided with a plurality of filter tank monomers, filter materials and supporting layers are sequentially placed in the filter tank monomers from top to bottom, the carbon source adding unit and the back flushing mechanism are respectively communicated with the filter tank monomers through pipelines, and the power unit provides power for the filter unit and the back flushing unit.

Preferably, the filter tank body is divided into a second tank body and a first tank body formed by a plurality of small tank bodies in the vertical axis direction, the second tank body is positioned at the upper part of the first tank body, the first tank body is provided with a closed bottom surface, and the bottom of the second tank body is hollow.

Preferably, the first box body and the second box body are installed in a welding mode, and meanwhile square partition plates in the second box body and square partition plates in the first box body are correspondingly arranged to form a plurality of filter tank monomers, and the water treatment amount of the filter tank monomers is 250m ³ /d。

Preferably, an air distribution pipe is arranged at the inner bottom of the first box body, the air distribution pipe is provided with a plurality of main air pipes, one filter unit is communicated with one main air pipe, the main air pipe is communicated with the bottom of the filter unit and then is divided into four branch pipes, and the four branch pipes are uniformly arranged at the lower part of the filter unit.

Preferably, the aperture of the branch pipes is 4mm, and the distance between the branch pipes is 50mm.

Preferably, a supporting seat is arranged beside the branch pipe, and a pore plate, a supporting layer and a filter material are sequentially paved above the supporting seat.

Preferably, the pore plate is a steel plate with the thickness of 5mm, and is perforated with the width of 3mm and the length of 200mm, and the aperture ratio is 4%.

Preferably, the filter tank body, the gas distribution pipe, the supporting seat and the pore plate are all of steel structures.

The utility model has the beneficial effects that: in the modularized denitrification deep bed filter system, when the requirements of small-scale sewage treatment are met, different modularized units are arranged, steel materials are adopted, the manufacturing period is short, the transportation is convenient, the installation is convenient, the air distribution and the water distribution are uniform, meanwhile, the system is stable in operation and high in impact load resistance, has various pollutant removal functions TN/TP/SS and the like, meets the water outlet standard, and can reach TN <8mg/L, TP <0.5mg/L and SS <10mg/L stably.

Drawings

FIG. 1 is a schematic plan view of the present utility model;

FIG. 2 is a schematic diagram of the structure of the present utility model;

fig. 3 is a left side view of the present utility model.

Reference numerals: the filter comprises a 1-filtering unit, a 2-back flushing unit, a 3-carbon source adding unit, a 4-power unit, a 11-filtering tank body, a 12-filtering tank unit, a 13-first tank body, a 14-second tank body, a 15-square partition board, a 16-gas distribution pipe, a 17-main gas pipe, a 18-branch pipe, a 19-supporting seat, a 20-pore plate, a 21-pore opening, a 22-supporting layer, a 23-filter material, a 24-cover plate and an exhaust cover plate, a 25-water inlet and distribution device, a 26-back flushing overflow port vertebral canal, a 27-supporting layer I, a 28-supporting layer II, a 29-supporting layer III, a 30-supporting layer IV and a 31-supporting layer V.

Detailed Description

The present utility model will be described in further detail with reference to examples and drawings, but embodiments of the present utility model are not limited thereto.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and for simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "configured," "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; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples

The embodiment of the utility model relates to a modularized denitrification deep bed filter system, which comprises a filter unit 1, a back flushing unit 2, a carbon source adding unit 3 and a power unit 4 as shown in fig. 1, 2 and 3. The filter unit 1 comprises a filter tank body 11, a filter material 23 and a supporting layer 22, wherein the filter tank body 11 is provided with a plurality of filter tank monomers 12, and the filter material 23 and the supporting layer 22 are sequentially arranged in the filter tank monomers 12 from top to bottom; the backwash unit 2 comprises a backwash mechanism. The carbon source adding unit 3 and the back flushing mechanism are respectively communicated with the filter tank unit 12 through pipelines, and the power unit 4 provides power for the filter unit 1 and the back flushing unit 2. A control monitoring unit can also be arranged for liquid level and water quality monitoring and the like.

Meanwhile, each modularized unit manufactured by the steel structure is assembled in sequence, so that the manufacturing period is short, the cost is low, the modularized assembly is adopted, the tank body can be transversely placed, the transportation is convenient, and the on-site splicing is convenient.

Further, as shown in fig. 2, the filter tank 11 is divided into a first tank 13 and a second tank 14 on a vertical axis, and the second tank 14 is located at an upper portion of the first tank 13. The first tank 13 has a height of 3m, the second tank 14 has a height of 1.5 m, and the first tank 13 may be formed by welding a plurality of small tanks in advance. Meanwhile, the second tank 14 can be additionally arranged according to the actual field condition so as to set the proper height of the filter tank 11.

Further, square partition plates 15 are arranged in the first box 13 and the second box 14 respectively and correspondingly to form a filter unit 12. The first box 13 has a bottom confined face, and the second box 14 is a hollow box, when carrying out whole filtering pond box 11 installation again, earlier place the bottom surface of first box 13 in mounting platform's upper surface, install second box 14 simultaneously, adopt welded mode to install in the junction of first box 13 and second box 14, strengthen steadiness and leakproofness between the box. Meanwhile, a water inlet and distribution device 25 is arranged on one side of the interior of the filter tank unit 12, a backwash overflow orifice cone 26 is arranged on the other side, and a cover plate and an exhaust cover plate 24 are arranged on the upper part of the second tank body 14, so that nitrogen removal and secondary pollution in the filter tank unit 12 are effectively avoided.

Specifically, each filter cell 12 in the filter tank 11 can process 250m ³ The water quantity/d, in FIG. 2, is at least 1000m for the whole filter tank 11 ³ And/d, and an expansion pipeline is arranged at the tail end of the water volume, so that the tank body is additionally arranged for use in preparation for increasing the treatment capacity. The volume of the filter tank 11 can be set to be corresponding according to the sewage amount actually required to be treated.

Further, an air distribution pipe 16 is arranged at the inner bottom of the first box 13, the air distribution pipe 16 is provided with a plurality of main air pipes 17, one filter unit 12 is communicated with one main air pipe 17, the main air pipe 17 is communicated with the bottom of the filter unit 12 and then is divided into four branch pipes 18, and the four branch pipes 18 are uniformly arranged at the lower part of the filter unit 12.

Further, the diameter of the branch pipes 18 was 4mm, and the interval between each branch pipe 18 was 50mm. Meanwhile, the end of the branch pipe 18 is provided with a sealing head, and the sealing head is provided with a 4mm air hole, so that the effect of uniform air distribution can be achieved when the back flushing procedure is performed.

Further, a supporting seat 19 is arranged beside the branch pipe 18, and a pore plate 20, a bearing layer 22 and a filter material 23 are sequentially paved above the supporting seat 19.

Specifically, the filter material 23 is sea sand with the particle size of 1.75-3.25mm, and the filler height is 1830mm; the supporting layer 22 is located below the filter material 23, and the supporting layer 22 comprises five pebbles with different particle sizes and different filler heights, specifically: a first supporting layer 27, which is made of pebbles with the particle size of 6-12mm and has a filling height of 100mm; a second supporting layer 28, which is made of pebbles with the particle size of 3-6mm and has a filling height of 100mm; bearing layer three 29, its particle size is pebbles of 6-12mm, the packing height is 100mm; a fourth supporting layer 30, which is made of pebbles with the particle size of 12-20mm and has a filler height of 50mm; and a fifth supporting layer 31, which is made of pebbles with the particle size of 20-38mm and has a filler height of 100mm. The sewage can remove or retain pollutants through the sea sand filter material 23 with the depth of more than 1.83m, has strong pollutant receiving capacity, can be stably treated to SS less than or equal to 10, and has strong SS impact load resistance.

Further, the orifice plate 20 is a steel plate with the thickness of 5mm, the orifice plate 20 is provided with openings 21, the size of the openings 21 is 3mm wide and 200mm long, the aperture ratio of the orifice plate 20 reaches 4%, and the effects of water and gas distribution are uniformly achieved in the back flushing process.

Further, the filter tank body 11, the gas distribution pipe 16, the supporting seat 19 and the pore plate 20 are all made of steel structures. The manufacturing period is short, the cost is low, the modular assembly is adopted, the filter tank body 11 is only required to be assembled, the filter tank body 11 is connected with other prefabricated equipment through a pipeline, the assembly time is shortened, and the assembly and the splicing are convenient.

The foregoing description of the preferred embodiment of the utility model is not intended to limit the utility model in any way, but rather to cover all modifications, equivalents, improvements and alternatives falling within the spirit and principles of the utility model.

Claims

1. A modular denitrification deep bed filter system comprising:

the filter unit (1) comprises a filter tank body (11), a filter material (23) and a supporting layer (22);

a back flushing unit (2) comprising a back flushing mechanism;

a carbon source adding unit (3) and a power unit (4);

the filter tank body (11) is provided with a plurality of filter tank monomers (12), filter materials (23) and supporting layers (22) are sequentially placed inside the filter tank monomers (12) from top to bottom, the carbon source adding unit (3) and the back flushing mechanism are respectively communicated with the filter tank monomers (12) through pipelines, and the power unit (4) provides power for the filter unit (1) and the back flushing unit (2).

2. A modular denitrification deep bed filter system according to claim 1, wherein the filter tank (11) is divided into a second tank (14) and a first tank (13) comprising a plurality of small tanks along the vertical axis, the second tank (14) is located at the upper part of the first tank (13), the first tank (13) has a closed bottom surface, and the bottom of the second tank (14) is hollow.

3. A modular denitrification deep bed filter system according to claim 2, wherein the first tank (13) and the second tank (14) are installed by welding, and square partition plates (15) in the second tank (14) are correspondingly arranged with the square partition plates (15) in the first tank (13) to form a plurality of filter monomers (12), and the water treatment amount of the filter monomers is 250m ³ /d。

4. A modular denitrification deep bed filter system according to claim 2, wherein an air distribution pipe (16) is arranged at the inner bottom of the first box body (13), the air distribution pipe (16) is provided with a plurality of main air pipes (17), one filter unit (12) is communicated with one main air pipe (17), the main air pipe (17) is communicated with the bottom of the filter unit (12) and then is divided into four branch pipes (18), and the four branch pipes (18) are uniformly arranged at the lower part of the filter unit (12).

5. A modular denitrification deep bed filter system according to claim 4, wherein the aperture of the branch pipes (18) is 4mm and the spacing between the branch pipes (18) is 50mm.

6. A modular denitrification deep bed filter system according to claim 4, wherein a support base (19) is provided beside the branch pipe (18), and an orifice plate (20), a bearing layer (22) and a filter material (23) are sequentially laid above the support base (19).

7. A modular denitrification deep bed filter system according to claim 6, wherein the orifice plate (20) is a steel plate with a thickness of 5mm, and an opening (21) with a width of 3mm and a length of 200mm is made in the orifice plate (20), and the opening ratio is 4%.

8. The modular denitrification deep bed filter system according to claim 6, wherein the filter tank (11), the gas distribution pipe (16), the support seat (19) and the orifice plate (20) are all steel structures.