Filter tank filtering device for sewage treatment

Abstract

The utility model relates to the technical field of filter devices, and provides a filter device of a filter tank for sewage treatment, which comprises a filter tank main body, the common filter material layer and the biological filler layer are both arranged at the bottom of the filter tank main body, and the common filter material layer is positioned above the biological filler layer; the gas distribution device is arranged at the bottom of the filter tank main body, is positioned below the biological filler layer, and is used for cleaning the common filter material layer and the biological filler layer. According to the technical scheme, the problems that in the prior art, the water quality purification effect of a traditional filter tank cannot meet the deep inlet water quality requirement, meanwhile, cleaning is complex, and the occupied area of a cleaning structure is large are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, and in particular to a filter tank filtering device for sewage treatment. Background Art

[0002] Sewage treatment filter is a very important part of the sewage treatment process. It can use physical, chemical and biological methods to remove pollutants in sewage to achieve the purpose of purifying water quality. According to the structure and working principle of the filter, sewage treatment filter can be divided into many types. Each type has its own characteristics and scope of application, namely anaerobic biological filter, denitrification filter and filter media filter. Among them, filter media filter is distinguished according to the type and structure of filter media. There are many types of filter media, such as quartz sand, anthracite, etc., but filter media filter has the following problems during use:

[0003] The water purification effect of traditional filter tanks cannot meet the water quality requirements of deep water inlet. At the same time, it is more complicated to clean and the cleaning structure occupies a large area. Utility Model Content

[0004] The utility model provides a filter tank filtration device for sewage treatment, which solves the problems in the related art that the water purification effect of the traditional filter tank cannot meet the water quality requirements of deep water inlet, and the cleaning is relatively complicated and the cleaning structure occupies a large area.

[0005] The technical solution of the utility model is as follows:

[0006] A filter tank filtering device for sewage treatment, comprising:

[0007] Filter body;

[0008] A common filter material layer and a biological filler layer, wherein both the common filter material layer and the biological filler layer are arranged at the bottom of the filter tank body, and the common filter material layer is located above the biological filler layer;

[0009] An air distribution device is arranged at the bottom of the filter tank body and below the biological filler layer. The air distribution device is used to clean the common filter material layer and the biological filler layer.

[0010] As a further technical solution, the ratio of the thickness of the common filter material layer to the thickness of the biological filler layer is 1:2.

[0011] As a further technical solution, the bottom of the filter tank body has a filter plate portion, the filter plate portion has filter holes, and the filter plate portion is located between the biological filler layer and the air distribution device.

[0012] As a further technical solution, the filter tank body is V-shaped.

[0013] As a further technical solution, the air distribution device includes:

[0014] An air supply pipe is arranged at the bottom of the filter tank body, and the air supply pipe is configured in a grid shape.

[0015] As a further technical solution, the air distribution device further includes:

[0016] A plurality of nozzles are arranged on the air supply pipe, are communicated with the air supply pipe, are arranged at equal intervals, and face the filter holes.

[0017] As a further technical solution, the interval between two adjacent nozzles is 20 cm.

[0018] As a further technical solution, the thickness of the common filter material layer is 0.5m, and the thickness of the biological filler layer is 1m.

[0019] The working principle and beneficial effects of the utility model are:

[0020] In the utility model, the core of this scheme is to change the traditional filter material laying structure and air supply method to improve the purification effect of the filter tank, ensure the deep treatment of water inlet indicators, and extend the service life. The air distribution device arranged at the bottom of the filter tank body can realize the backwashing cleaning function, ensuring that the filter material is evenly stressed during the air washing of the filter tank body, avoiding the phenomenon of material shortage and material stacking, effectively improving the filtering effect, and at the same time not occupying a large area.

[0021] Instead of the traditional single filter media layer method, an ordinary filter media layer and a biological filler layer are installed at the bottom of the filter tank body. The ordinary filter media layer has a relatively small effective filtering space and a better interception effect on suspended solids. The biological filler layer has the functions of removing SS, COD, BOD, nitrification and denitrification, and removing nitrogen and phosphorus. It integrates biological oxidation and interception of suspended solids, so that the filtration effects of ordinary filter media and biological fillers are superimposed, which greatly improves the deep treatment water production capacity and extends the service life of various deep treatment equipment and facilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] Figure 1 This is a schematic structural diagram of a filter tank filtration device for sewage treatment in the utility model from a first perspective;

[0024] Figure 2 This is a schematic structural diagram of a filter tank filtration device for sewage treatment in the utility model from a second viewing angle;

[0025] Figure 3 For this utility model Figure 2Enlarged view of part A in the middle;

[0026] In the figure: 1. filter tank body, 101. filter plate part, 102. filter hole, 2. ordinary filter material layer, 3. biological filler layer, 4. air distribution device, 401. air supply pipe, 402. nozzle. DETAILED DESCRIPTION

[0027] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0028] like Figure 1~Figure 3 As shown, this embodiment provides a filter tank filtering device for sewage treatment, comprising:

[0029] Filter tank body 1;

[0030] A common filter material layer 2 and a biological filler layer 3, wherein the common filter material layer 2 and the biological filler layer 3 are both arranged at the bottom of the filter tank body 1, and the common filter material layer 2 is located above the biological filler layer 3;

[0031] The air distribution device 4 is arranged at the bottom of the filter tank body 1 and below the biological filler layer 3 . The air distribution device 4 is used to clean the common filter material layer 2 and the biological filler layer 3 .

[0032] In this embodiment, the core of this solution is to change the traditional filter material laying structure and air supply method to improve the purification effect of the filter bed, ensure the deep treatment of water inlet indicators, and extend the service life. The air distribution device 4 arranged at the bottom of the filter bed main body 1 can realize the backwashing cleaning function, ensuring that the filter material is evenly stressed when the filter bed main body 1 is air washed, avoiding material shortage and material stacking, effectively improving the filtering effect, and at the same time not occupying a large area.

[0033] Instead of the traditional single filter layer method, an ordinary filter layer 2 and a biological filler layer 3 are installed at the bottom of the filter tank body 1, and the ordinary filter layer 2 is used to comprehensively utilize the characteristics of relatively small effective filtering space and better interception effect of suspended solids. In addition, the biological filler layer 3 can remove SS, COD, BOD, nitrify and denitrify, and remove nitrogen and phosphorus. It integrates biological oxidation and interception of suspended solids, so that the filtration effects of ordinary filter media and biological fillers are superimposed, which greatly improves the deep treatment water production capacity and extends the service life of various deep treatment equipment and facilities.

[0034] Furthermore, the thickness ratio of the common filter material layer 2 to the biological filler layer 3 is 1:2.

[0035] In this embodiment, in order to ensure the filtering effect while controlling the cost of the filter material layer as much as possible, the thickness ratio of the common filter material layer 2 to the biological filler layer 3 is designed to be 1:2. Specifically, the thickness of the common filter material layer 2 is 0.5m, and the thickness of the biological filler layer 3 is 1m.

[0036] Furthermore, the filter tank body 1 has a filter plate portion 101 at the bottom, the filter plate portion 101 has filter holes 102 , and the filter plate portion 101 is located between the biological filler layer 3 and the air distribution device 4 .

[0037] In this embodiment, in order to ensure the normal use of the entire filtration device, a filter plate portion 101 is arranged between the biological filler layer 3 and the air distribution device 4. The filter plate portion 101 has filter holes 102 for filtration. The air distribution device 4 is located below it, which can better utilize the backwashing function. In addition to cleaning the two filter material layers, the filter plate portion 101 of the filter tank body 1 can also be cleaned.

[0038] Furthermore, the filter tank body 1 is V-shaped.

[0039] In this embodiment, the core technical points are applied to the V-shaped filter body 1. The V-shaped filter has the characteristics of large capacity and high cleaning efficiency, so the functions of the V-shaped filter body 1, adsorption, biological treatment, etc. are maximized, thereby ensuring the operating conditions of deep treatment.

[0040] Further, the air distribution device 4 comprises:

[0041] The air supply pipe 401 is arranged at the bottom of the filter tank body 1, and the air supply pipe 401 is configured in a grid shape.

[0042] Furthermore, the air distribution device 4 further comprises:

[0043] A plurality of nozzles 402 are disposed on the air supply pipe 401 , are connected to the air supply pipe 401 , and are arranged at equal intervals. The nozzles 402 face the filter holes 102 .

[0044] Furthermore, the interval between two adjacent nozzles 402 is 20 cm.

[0045] Furthermore, the thickness of the common filter material layer 2 is 0.5 m, and the thickness of the biological filler layer 3 is 1 m.

[0046] In this embodiment, the air distribution device 4 is composed of a plurality of air supply pipes 401 arranged at intervals and a plurality of nozzles 402 connected thereto and arranged at intervals. To ensure uniform effect, two adjacent nozzles 402 are arranged 20 cm apart. The grid-shaped air supply pipe 401 has a distance of 20 cm between two adjacent root tubes. When supplying air, the nozzle 402 evenly discharges the gas in the pipe to the filter hole 102, thereby achieving uniform cleaning of the filter plate portion 101 and the two different filter material layers.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A filter tank filtration device for sewage treatment, characterized in that: include: Filter body (1); A common filter material layer (2) and a biological filler layer (3), wherein the common filter material layer (2) and the biological filler layer (3) are both arranged at the bottom of the filter tank body (1), and the common filter material layer (2) is located above the biological filler layer (3); An air distribution device (4), the air distribution device (4) being arranged at the bottom of the filter tank body (1) and below the biological filler layer (3), the air distribution device (4) being used to clean the common filter material layer (2) and the biological filler layer (3).

2. A filter tank filtration device for sewage treatment according to claim 1, characterized in that: The ratio of the thickness of the common filter material layer (2) to the thickness of the biological filler layer (3) is 1:

2.

3. A filter tank filtration device for sewage treatment according to claim 1, characterized in that: The filter tank body (1) has a filter plate portion (101) at the bottom, the filter plate portion (101) has filter holes (102), and the filter plate portion (101) is located between the biological filler layer (3) and the air distribution device (4).

4. A filter tank filtration device for sewage treatment according to any one of claims 1 to 3, characterized in that: The filter tank body (1) is V-shaped.

5. A filter tank filtration device for sewage treatment according to claim 3, characterized in that: The air distribution device (4) comprises: An air supply pipe (401), the air supply pipe (401) is arranged at the bottom of the filter tank body (1), and the air supply pipe (401) is configured in a grid shape.

6. A filter tank filtration device for sewage treatment according to claim 5, characterized in that: The air distribution device (4) further comprises: A plurality of nozzles (402), each of the nozzles (402) being disposed on the air supply pipe (401) and connected to the air supply pipe (401), and the plurality of nozzles (402) being arranged at equal intervals, and the nozzles (402) facing the filter hole (102).

7. A filter tank filtration device for sewage treatment according to claim 6, characterized in that: The interval between two adjacent nozzles (402) is 20 cm.

8. A filter tank filtration device for sewage treatment according to claim 2, characterized in that: The thickness of the common filter material layer (2) is 0.5 m, and the thickness of the biological filler layer (3) is 1 m.

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