Domestic small sewage treatment biological filter bed

Abstract

The utility model discloses a domestic small -size sewage treatment is with biological filter bed, including filter bed body, the filter screen for the filter of sewage before entering filter bed body is fixedly installed in arc frame, the utility model discloses through arc frame, brush roller and filter screen etc. The design of structure, before the sewage enters filter bed, the sewage enters to arc frame inside, and the big particle impurity and colloidal class suspended solids in the sewage are intercepted and captured through the filter screen in arc frame, prevent the big particle impurity and colloidal class suspended solids from entering the filler layer directly, and fill the filler aperture, and the water flow resistance problem of sudden increase due to the impurity blockage is checked from the root, guarantee filter bed long -term stable operation, and the big particle impurity and colloidal class suspended solids on the filter screen are cleaned through the rotation of the driven brush roller, and the impurity on the filter screen is removed in time through the interception, prevent the filter screen from blocking itself, ensure that the pretreatment link continues effectively, improve the reliability and service life of whole system.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically a small-scale household wastewater treatment biological filter bed. Background Technology

[0002] In the field of domestic wastewater treatment, biofilters are widely used due to their compact structure and stable treatment efficiency. However, the clogging problem during long-term operation has always limited their actual effectiveness. Existing household biofilters generally lack a pretreatment stage for suspended solids in wastewater. Large particulate impurities such as hair and food residue, as well as colloidal suspended solids mixed in the wastewater, can directly enter the packing layer, quickly filling the pores of the packing and causing a sharp increase in water flow resistance. Therefore, we need to propose a small-scale household wastewater treatment biofilter. Utility Model Content

[0003] The purpose of this invention is to provide a small-scale household wastewater treatment biological filter bed to solve the problem mentioned in the background art, which is caused by the lack of wastewater pretreatment, resulting in large particulate impurities and colloidal suspended particles clogging the pores of the packing material and causing a sharp increase in water flow resistance.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A small-scale household wastewater treatment biological filter bed includes a filter bed body, an arc-shaped frame fixedly installed inside the filter bed body, and a filter screen for filtering wastewater before it enters the filter bed body fixedly installed inside the arc-shaped frame. A drive motor is fixedly installed on the side of the filter bed body. The output shaft of the drive motor is fixedly installed with a brush roller for cleaning impurities and suspended solids filtered out by the filter screen through a coupling. The bristles of the brush roller are in contact with the inner wall of the filter screen.

[0005] Preferably, the inner wall of the filter bed body is provided with a collection mechanism for collecting impurities and suspended matter cleaned up by the brush roller. The collection mechanism includes a collection box and an inclined plate. Both the collection box and the inclined plate are fixedly installed on the inner wall of the filter bed body. The inclined plate is fixedly connected to the collection box at an incline. The inclined plate has multiple sets of hanging grooves arranged in a rectangular array for brush roller bristles to avoid the brush roller bristles. Some of the brush roller bristles are located inside the hanging grooves.

[0006] Preferably, a first partition is fixedly connected inside the filter bed body, and the filter bed body is divided into a sedimentation tank and a water passage tank by the first partition. The arc-shaped frame, the collection box and the inclined plate are all located inside the sedimentation tank.

[0007] Preferably, a second mounting shell is fixedly installed on the inner wall of the sedimentation tank. The second mounting shell contains a gravel layer for further filtration of impurities in the sewage. One side of the second mounting shell is fixedly connected to the side of the collection box.

[0008] Preferably, a third mounting shell is fixedly installed on the inner wall of the water passage pool, and the third mounting shell is provided with a volcanic rock biological filler layer and an iron matrix catalytic active biological carrier layer from top to bottom.

[0009] Preferably, a second partition is fixedly installed on the inner wall of the water passage pool, and the interior of the water passage pool is divided into a clear water pool by the second partition. A connecting pipe is fixedly installed on the filter bed body, and the water passage pool and the clear water pool are connected by the connecting pipe. One end of the connecting pipe is connected to a conveying pipe, and multiple sets of drain outlets are symmetrically fixed on the conveying pipe.

[0010] Preferably, a first mounting shell is fixedly installed inside the clear water tank, and an activated carbon layer is disposed inside the first mounting shell, with the clear water tank disposed above the activated carbon layer.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes a structure consisting of an arc-shaped frame, brush rollers, and a filter screen. Before entering the filter bed, the wastewater enters the arc-shaped frame, where the filter screen intercepts and captures large particles and colloidal suspended solids, preventing them from directly entering the packing layer and filling the packing pores. This fundamentally prevents a sudden increase in water flow resistance caused by impurities clogging the filter bed, ensuring its long-term stable operation. Furthermore, the brush rollers are driven to rotate and clean the large particles and colloidal suspended solids intercepted on the filter screen. By promptly removing the impurities intercepted on the filter screen, clogging of the screen itself is prevented, ensuring the continuous effectiveness of the pretreatment process and improving the reliability and service life of the entire system. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is one of the cross-sectional structural schematic diagrams of this utility model; Figure 3 This is the second cross-sectional structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the structure of the collection box, inclined plate and arc frame of this utility model.

[0013] In the diagram: 1. Filter bed body; 2. First baffle; 3. Sedimentation tank; 4. Water passage tank; 5. Drainage pipe; 6. Second baffle; 7. Clear water tank; 8. First mounting shell; 9. Activated carbon layer; 10. Connecting pipe; 11. Conveying pipe; 12. Drain outlet; 13. Water supply pipe; 14. Arc frame; 15. Drive motor; 16. Brush roller; 17. Water baffle; 18. Collection box; 19. Inclined plate; 20. Material hanging trough; 21. Second mounting shell; 22. Gravel layer; 23. Support mesh plate; 24. Third mounting shell; 25. Volcanic rock biological filler layer; 26. Iron matrix catalytic active biological carrier layer; 27. Filter screen. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4 This utility model provides a technical solution: A small-scale household wastewater treatment biological filter bed includes a filter bed body 1, an arc-shaped frame 14 fixedly installed inside the filter bed body 1, and a filter screen 27 for filtering wastewater before it enters the filter bed body 1. A drive motor 15 is fixedly installed on the side of the filter bed body 1. The output shaft of the drive motor 15 is fixedly installed with a brush roller 16 for cleaning impurities and suspended solids filtered out by the filter screen 27 via a coupling. The bristles of the brush roller 16 are in contact with the inner wall of the filter screen 27.

[0016] It should be noted that after the sewage enters the arc frame 14, it is filtered by the filter screen 27 to intercept and filter large particulate impurities such as hair and food residue mixed in the sewage, as well as colloidal suspended matter. In addition, the drive motor 15 drives the brush roller 16 to clean the impurities and suspended matter intercepted in the filter screen 27 to prevent the filter screen 27 from clogging and affecting the subsequent sewage interception efficiency. A water baffle 17 is fixedly installed on the filter bed body 1. The water baffle 17 is positioned above the arc frame 14. The water baffle 17 prevents the brush roller 16 from throwing out the impurities and suspended matter intercepted on the filter screen 27 when cleaning it.

[0017] In an optional embodiment: such as Figures 2-3As shown, the inner wall of the filter bed body 1 is provided with a collection mechanism for collecting impurities and suspended matter cleaned up by the brush roller 16. The collection mechanism includes a collection box 18 and an inclined plate 19. The collection box 18 and the inclined plate 19 are both fixedly installed on the inner wall of the filter bed body 1. The inclined plate 19 is fixedly connected to the collection box 18 at an incline. Multiple sets of hanging grooves 20 for brush bristles of the brush roller 16 to avoid being opened in a rectangular array on the inclined plate 19. Some of the brush bristles of the brush roller 16 are located inside the hanging grooves 20.

[0018] It should be noted that by opening multiple sets of hanging grooves 20 on the inclined plate 19, the contour of the inclined plate 19 is arranged in a neat row like the teeth of a comb. When the drive motor 15 drives the brush roller 16 to rotate, the brush of the brush roller 16 will enter the inside of the hanging groove 20. The impurities cleaned off the brush roller 16 are cleaned by the inclined plate 19. The cleaned impurities fall into the collection box 18 along the inclined plate 19 and are collected.

[0019] In an optional embodiment: such as Figure 2 and Figure 3 As shown, the filter bed body 1 is fixedly connected to the first partition 2. The filter bed body 1 is divided into a sedimentation tank 3 and a water passage tank 4 by the first partition 2. The arc frame 14, the collection box 18 and the inclined plate 19 are all located inside the sedimentation tank 3.

[0020] It should be noted that by dividing the interior of the filter bed body 1 into a sedimentation tank 3 and a water passage tank, the wastewater can flow and be purified within the filter bed.

[0021] In an optional embodiment: such as Figures 2-4 As shown, a second mounting shell 21 is fixedly installed on the inner wall of the sedimentation tank 3. The second mounting shell 21 contains a gravel layer 22 for further filtration of impurities in the sewage. One side of the second mounting shell 21 is fixedly connected to the side of the collection box 18.

[0022] It should be noted that the gravel layer 22 is made of gravel. After the sewage falls into the sedimentation tank 3, it will slowly overflow the second mounting shell 21 and then filter the impurities and suspended solids in the sewage again through the gravel layer 22.

[0023] In an optional embodiment: such as Figure 2 and Figure 3 As shown, a third mounting shell 24 is fixedly installed on the inner wall of the water passage pool 4. The third mounting shell 24 is provided with a volcanic rock biological filler layer 25 and an iron matrix catalytic active biological carrier layer 26 from top to bottom.

[0024] It should be noted that the particle size of both the volcanic rock biological packing layer 25 and the iron matrix catalytic active biological carrier layer 26 is 20-100mm, which is large and therefore will not cause filter bed clogging. Furthermore, the volcanic rock biological packing layer 25 and the iron matrix catalytic active biological carrier layer 26 purify wastewater in a combination of autotrophic and heterotrophic methods. This combination of autotrophic and heterotrophic methods has low requirements for natural conditions, high efficiency in removing organic matter and nitrogen, and high efficiency in phosphorus removal with long-lasting effects. In an optional embodiment: such as Figure 2 and Figure 3 As shown, a second partition 6 is fixedly installed on the inner wall of the water passage pool 4. The interior of the water passage pool 4 is divided into a clear water pool 7 by the second partition 6. A connecting pipe 10 is fixedly installed on the filter bed body 1. The water passage pool 4 and the clear water pool 7 are connected through the connecting pipe 10. One end of the connecting pipe 10 is connected to a conveying pipe 11. Multiple sets of drain outlets 12 are symmetrically fixed on the conveying pipe 11.

[0025] A water supply pipe 13 for supplying water to the arc frame 14 is fixedly installed on the upper side of one side of the filter bed body 1. The water supply pipe 13 is connected to the sedimentation tank 3. A drain pipe 5 is fixedly installed on the lower side of the other side of the filter bed body 1. The drain pipe 5 is connected to the clear water tank 7.

[0026] It should be noted that the purified wastewater is transported to the clear water tank 7 via the conveying pipe 11 for further purification.

[0027] In an optional embodiment: such as Figure 2 and Figure 3 As shown, a first mounting shell 8 is fixedly installed inside the clear water tank 7, and an activated carbon layer 9 is provided inside the first mounting shell 8. The clear water tank 7 is located above the activated carbon layer 9.

[0028] The first mounting shell 8, the third mounting shell 24, and the third mounting shell 24 are all provided with a support mesh plate 23, which supports the activated carbon layer 9, the gravel layer 22, and the iron matrix catalytic active biological carrier layer 26.

[0029] It should be noted that the support mesh plate 23 is used to support the activated carbon layer 9, the gravel layer 22 and the iron matrix catalytic active biological carrier layer 26.

[0030] The usage process of this utility model is as follows: Sewage enters the arc frame 14 through the water supply pipe 13. The sewage entering the arc frame 14 can be filtered by the filter screen 27. The filter screen 27 intercepts and captures large particulate impurities and colloidal suspended matter in the sewage. When the filter screen 27 filters the sewage, the drive motor 15 is started. The output shaft of the drive motor 15 drives the brush roller 16 to rotate. When the brush roller 16 rotates, it scrapes and cleans the impurities and suspended matter intercepted in the filter screen 27. The scraped impurities and suspended matter will adhere to the bristles of the brush roller 16. When the bristles of the brush roller 16 pass the inclined plate 19, they will enter the hanging trough 20. The hanging trough 20 cleans the impurities and suspended matter attached to the bristles of the brush roller 16. The cleaned impurities and suspended matter can slide down the inclined plate 19 into the collection box 18 for collection. After the wastewater is filtered by the filter screen 27, the filtered wastewater falls into the sedimentation tank 3. After the wastewater overflows the second mounting shell 21, it passes through the gravel layer 22 to filter impurities and suspended solids in the wastewater again. After filtration, the wastewater can enter the water passage tank 4. After the wastewater enters the water passage tank 4, it can pass through the volcanic rock biological filler layer 25 and the iron matrix catalytic active biological carrier layer 26 in sequence. The wastewater is purified by the volcanic rock biological filler layer 25 and the iron matrix catalytic active biological carrier layer 26. After purification, the wastewater is transported to the interior of the clear water tank 7 through the connecting pipe 10 and the conveying pipe 11. The wastewater can be purified again through the activated carbon layer 9. The purified wastewater can be discharged through the drain pipe 5.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A small-scale household wastewater treatment biological filter bed, characterized in that: Includes a filter bed body (1), an arc-shaped frame (14) is fixedly installed inside the filter bed body (1), a filter screen (27) for filtering sewage before it enters the filter bed body (1) is fixedly installed inside the arc-shaped frame (14), and a water supply pipe (13) for supplying water to the arc-shaped frame (14) is fixedly installed on the upper side of one side of the filter bed body (1). A drive motor (15) is fixedly installed on the side of the filter bed body (1). The output shaft of the drive motor (15) is fixedly installed with a brush roller (16) for cleaning impurities and suspended matter filtered out by the filter screen (27) through a coupling. The bristles of the brush roller (16) are in contact with the inner wall of the filter screen (27). A water baffle (17) is fixedly installed on the filter bed body (1), and the water baffle (17) is located above the arc frame (14); The inner wall of the filter bed body (1) is provided with a collection mechanism for collecting impurities and suspended matter cleaned by the brush roller (16). The collection mechanism includes a collection box (18) and an inclined plate (19). The collection box (18) and the inclined plate (19) are both fixedly installed on the inner wall of the filter bed body (1). The inclined plate (19) is fixedly connected to the collection box (18) at an incline. The inclined plate (19) has multiple sets of hanging grooves (20) arranged in a rectangular array for the brush bristles of the brush roller (16) to avoid each other. Some of the brush bristles of the brush roller (16) are located inside the hanging grooves (20).

2. The household small-scale biological filter bed for sewage treatment according to claim 1, characterized in that: The filter bed body (1) is fixedly connected to the inside of the first partition (2). The filter bed body (1) is divided into a sedimentation tank (3) and a water passage tank (4) by the first partition (2). The arc frame (14), the collection box (18) and the inclined plate (19) are all located inside the sedimentation tank (3).

3. A small-scale household wastewater treatment biological filter bed according to claim 2, characterized in that: The sedimentation tank (3) has a second mounting shell (21) fixedly installed on its inner wall. The second mounting shell (21) has a gravel layer (22) for further filtration of impurities in the sewage. One side of the second mounting shell (21) is fixedly connected to the side of the collection box (18).

4. A small-scale household wastewater treatment biological filter bed according to claim 2, characterized in that: The inner wall of the water tank (4) is fixedly installed with a third mounting shell (24), and the third mounting shell (24) is provided with a volcanic rock biological filler layer (25) and an iron matrix catalytic active biological carrier layer (26) from top to bottom.

5. A small-scale household wastewater treatment biological filter bed according to claim 4, characterized in that: The inner wall of the water passage (4) is fixedly installed with a second partition (6). The interior of the water passage (4) is separated into a clear water pool (7) by the second partition (6). A connecting pipe (10) is fixedly installed on the filter bed body (1). The water passage (4) and the clear water pool (7) are connected by the connecting pipe (10). One end of the connecting pipe (10) is connected to a conveying pipe (11). Multiple sets of drain outlets (12) are symmetrically fixed on the conveying pipe (11).

6. A small-scale household wastewater treatment biological filter bed according to claim 5, characterized in that: The clear water tank (7) is fixedly installed with a first mounting shell (8), and an activated carbon layer (9) is provided inside the first mounting shell (8). The clear water tank (7) is located above the activated carbon layer (9).

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