Sulfur autotrophic denitrification filter tank

Abstract

The utility model relates to the technical field of sewage treatment, and discloses a sulfur autotrophic denitrification filter tank which comprises a tank body, two groups of mounting seats are symmetrically arranged on two sides of an inner cavity of the tank body, detachable denitrification components are arranged in the two groups of mounting seats, and a backwashing device is arranged on one side of the tank body; the denitrification assembly comprises a filter box, and a plurality of groups of butt joint holes are formed in one side of the filter box; through cooperation of the backwashing device, the tank body and the denitrification assembly, the filter box is filled with a filter material in a staggered manner, and a cavity communicated with a butt joint hole is not filled with the filter material, so that unclean backwashing caused by the filter material is avoided, and the washing efficiency of the backwashing device is improved; meanwhile, two adjacent groups of filter materials can be conveniently flushed through a plurality of groups of flushing square pipes, so that the flushing efficiency of impurities in the filter materials is improved, sewage after flushing is conveniently discharged, and the service life of the filter materials is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sulfur autotrophic denitrification filter tank. Background Art

[0002] With the development of human industrialization, a large amount of wastewater containing nitrogen enters natural water bodies such as lakes, rivers and oceans, causing eutrophication of natural water bodies, resulting in the massive reproduction of algae, endangering the stability and biodiversity of aquatic ecosystems, and the nitrogen in water bodies also causes significant pollution to human drinking water sources, affecting human health;

[0003] In the prior art, the Chinese utility model with publication number: CN212864269U discloses a sulfur-iron composite double-layer filter media denitrification filter, which includes a sulfur autotrophic denitrification layer, an intermediate water layer, an iron autotrophic denitrification layer and a pebble support layer, which are sequentially distributed from top to bottom. A support plate is fixed below the sulfur autotrophic denitrification layer and the pebble support layer, and a plurality of filter holes are provided on the support plate. The lower part of the sulfur-iron composite double-layer filter media denitrification filter is connected to an inlet pipe and an iron filter media backwash pipe, and the upper part is connected to an outlet pipe. The inlet pipe is also connected to a reflux pipe, and the other end of the reflux pipe is located above the sulfur autotrophic denitrification layer, and the intermediate water layer is connected to a sulfur filter media backwash pipe. The filter can achieve sulfur and iron double-layer denitrification without shortening its service life;

[0004] The above technical solution designs a single-layer but thicker filter layer. Although it has a greater pollutant holding capacity, due to the thick filter layer, only the filter layer close to the flushing water inlet can be cleaned during backwashing. That is, the prior art still has the problem of incomplete backwashing, resulting in residual pollutants on the surface of the filter material that are difficult to remove, and will still accelerate the aging of the filter material and reduce the service life. Therefore, we need to propose a sulfur autotrophic denitrification filter. Utility Model Content

[0005] The utility model aims to provide a sulfur autotrophic denitrification filter tank, in which an integrated filter material layer is arranged as a separate filter material layer, thereby filtering water while ensuring its own nitrification effect, and an inlet and outlet are arranged in the separate interlayer, so as to facilitate backwashing of the separate filter material layer, improve the flushing effect of pollutants in the filter material, and further ensure the service life of the filter material, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a sulfur autotrophic denitrification filter, comprising a tank body, two groups of mounting seats are symmetrically arranged on both sides of the inner cavity of the tank body, and detachable denitrification components are arranged inside the two groups of mounting seats, and a backwashing device is arranged on one side of the tank body;

[0007] The denitrification component comprises a filter box, a plurality of docking holes are provided on one side of the filter box, a plurality of isolation grooves are provided on both sides of the inner cavity of the filter box adjacent to the plurality of docking holes, filter screens are inserted into the corresponding two isolation grooves, the inner cavity of the filter box is formed with a plurality of nitrification chambers through the plurality of filter screens, and the plurality of docking holes are respectively connected to the plurality of nitrification chambers;

[0008] The backwashing device includes an inlet four-way pipe, an outlet four-way pipe and multiple groups of flushing square pipes. Both ends of the multiple groups of flushing square pipes are connected with connecting pipes connected to the inlet four-way pipe and the outlet four-way pipe. One side of the pool body is provided with mounting holes for the multiple groups of flushing square pipes to pass through. The multiple groups of flushing square pipes are connected to the docking holes on the filter box.

[0009] Preferably, the water inlet end of the inlet four-way pipe is connected to the water inlet pipe, two groups of water outlet ends of the inlet four-way pipe are connected to the inlet connecting pipes on multiple groups of flushing square pipes, and the other group of water outlet ends of the inlet four-way pipe is connected to the external flushing pipe.

[0010] Preferably, the water outlet end of the outlet four-way pipe is connected to a water outlet pipe, two groups of water inlet ends of the outlet four-way pipe are connected to outlet connecting pipes on multiple groups of flushing square pipes, and the other group of water inlet ends of the outlet four-way pipe is connected to an external return water pipe.

[0011] Preferably, the three groups of water outlet ends of the inlet four-way pipe are all provided with water inlet valves, the three groups of water inlet ends of the outlet four-way pipe are all provided with water outlet valves, and the three groups of flushing ends of the external flushing pipe are alternately arranged with the two groups of filter boxes.

[0012] Preferably, a baffle is detachably connected to the other side of the filter box, and multiple groups of plug-ins are fixedly connected to both ends of one side of the baffle. Plug holes for plugging multiple groups of plug-ins are provided on the other side of the filter box.

[0013] Preferably, the upper surface of the pool body is connected to a water injection valve pipe, and the lower surface of the pool body is connected to a water discharge valve pipe, and the axis of the water injection valve pipe and the axis of the water discharge valve pipe are both arranged on the same straight line.

[0014] Preferably, a plurality of groups of support seats are fixedly connected to the lower surface of the pool body, and the plurality of groups of support seats are arranged in a rectangular array.

[0015] Preferably, two groups of rectangular holes are formed on a side of the pool body opposite to the multiple groups of mounting holes, and one end of the two groups of rectangular holes is hinged with an inspection door.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model mainly realizes the coordination among the backwashing device, the tank body and the denitrification component. The filter material is filled in the filter box in a staggered form, and the cavity connected with the docking hole is not filled with the filter material, thereby avoiding unclean backwashing after the filter material passes through, and improving the flushing efficiency of the backwashing device. At the same time, multiple groups of flushing square tubes are used to facilitate flushing between two adjacent groups of filter materials, thereby improving the flushing efficiency of impurities in the filter material, and then facilitating the discharge of sewage after flushing, thereby increasing the service life of the filter material. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall front structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the pool body of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the backwashing device of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the denitrification component of the utility model.

[0022] In the figure: 1. pool body; 2. inspection door; 3. water injection valve pipe; 4. drainage valve pipe; 5. support seat; 6. backwashing device; 61. water inlet pipe; 62. water outlet pipe; 63. inlet four-way pipe; 64. outlet four-way pipe; 65. water inlet valve; 66. water outlet valve; 67. external flushing pipe; 68. external return pipe; 69. flushing square pipe; 610. connecting pipe; 7. mounting seat; 8. mounting hole; 9. denitrification component; 91. filter box; 92. baffle; 93. socket; 94. plug block; 95. isolation tank; 96. filter screen; 97. docking hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in 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 in 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.

[0024] See also Figure 1-4 The utility model provides a technical solution: a sulfur autotrophic denitrification filter, comprising a tank body 1, two groups of mounting seats 7 are symmetrically arranged on both sides of the inner cavity of the tank body 1, and detachable denitrification components 9 are arranged inside the two groups of mounting seats 7, and a backwashing device 6 is arranged on one side of the tank body 1;

[0025] The denitrification component 9 includes a filter box 91, one side of the filter box 91 is provided with a plurality of docking holes 97, and both sides of the inner cavity of the filter box 91 adjacent to the plurality of docking holes 97 are provided with a plurality of isolation grooves 95, and filter screens 96 are inserted into the corresponding two isolation grooves 95. The inner cavity of the filter box 91 is formed with a plurality of nitrification chambers through the plurality of filter screens 96, and the plurality of docking holes 97 are respectively connected to the plurality of nitrification chambers;

[0026] The two groups of denitrification components 9 are respectively a sulfur autotrophic denitrification component and an iron autotrophic denitrification component. The filter layer structure of the sulfur autotrophic denitrification component is filled with sulfur particles, and the filter layer structure of the iron autotrophic denitrification component is filled with plastic tennis balls. The plastic tennis balls are made of sponge iron and can use the energy released by inorganic substances during oxidation to reduce nitrates and achieve denitrification. After the iron autotrophic denitrification component, NO3 in the sewage can be reduced. - The content.

[0027] The backwash device 6 includes an inlet four-way pipe 63, an outlet four-way pipe 64 and multiple groups of flushing square pipes 69. Both ends of the multiple groups of flushing square pipes 69 are connected with connecting pipes 610 connected to the inlet four-way pipe 63 and the outlet four-way pipe 64. One side of the pool body 1 is provided with mounting holes 8 for the multiple groups of flushing square pipes 69 to pass through. The multiple groups of flushing square pipes 69 are all connected to the docking holes 97 on the filter box 91.

[0028] The water inlet end of the inlet four-way pipe 63 is connected to the water inlet pipe 61, two groups of water outlet ends of the inlet four-way pipe 63 are connected to the inlet connecting pipe 610 on the multiple groups of flushing square pipes 69, and the other group of water outlet ends of the inlet four-way pipe 63 is connected to the external flushing pipe 67. The inlet four-way pipe 63 is convenient for diverting water, and the external flushing pipe 67 is convenient for flushing the cavity between the pool body 1 and the filter box 91, and then it is convenient to flush the filter material between the filter boxes 91, thereby improving the efficiency of flushing impurities, increasing the water inlet flushing points, and thus improving the efficiency of flushing impurities in the filter material.

[0029] The water outlet end of the four-way pipe 64 is connected to the water outlet pipe 62, two groups of water inlet ends of the four-way pipe 64 are connected to the connecting pipes 610 on the multiple groups of flushing square pipes 69, and the other group of water inlet ends of the four-way pipe 64 is connected to the external return pipe 68. The connecting pipe 610 and the external return pipe 68 are used to facilitate the recovery of water containing impurities, thereby improving the centralized treatment efficiency of impurities.

[0030] The three water outlet ends of the inlet four-way pipe 63 are all provided with water inlet valves 65, the three water inlet ends of the outlet four-way pipe 64 are all provided with water outlet valves 66, and the three flushing ends of the external flushing pipe 67 are alternately arranged with the two groups of filter boxes 91. The backwashing device 6 is conveniently controlled by the water inlet valve 65 and the water outlet valve 66, so as to facilitate the flushing of the filter material in the denitrification component 9.

[0031] A baffle plate 92 is detachably connected to the other side of the filter box 91, and multiple groups of plug blocks 94 are fixedly connected to both ends of one side of the baffle plate 92. A plug hole 93 for plugging multiple groups of plug blocks 94 is provided on the other side of the filter box 91. The baffle plate 92 facilitates the sealing of the filter box 91 filled with filter material to prevent the filter material from leaking out. At the same time, filter holes are provided on the upper and lower surfaces of the filter box 91 to facilitate the passage of water.

[0032] The upper surface of the pool body 1 is connected to a water injection valve pipe 3, and the lower surface of the pool body 1 is connected to a drainage valve pipe 4. The axis of the water injection valve pipe 3 and the axis of the drainage valve pipe 4 are both arranged on the same straight line, so that water can be easily introduced through the water injection valve pipe 3, and then discharged from the drainage valve pipe 4 after reaction of the two groups of denitrification components 9.

[0033] A plurality of support seats 5 are fixedly connected to the lower surface of the pool body 1 , and the plurality of support seats 5 are arranged in a rectangular array, so that the stability of the pool body 1 is improved by the support seats 5 .

[0034] Two groups of rectangular holes are provided on the side of the tank body 1 opposite to the multiple groups of mounting holes 8, and one end of the two groups of rectangular holes is hinged with an inspection door 2, through which the denitrification component 9 can be easily removed, so as to facilitate regular replacement of the filter material.

[0035] When in use, sewage is injected into the tank body 1 through the water injection valve pipe 3, and denitrification is carried out through the two groups of denitrification components 9, thereby reducing the sulfur and nitrogen content in the sewage. The denitrification components 9 can be easily disassembled, replaced and repaired by opening the inspection door 2. After treating the sewage for a long time, the water injection valve pipe 3 and the drainage valve pipe 4 are closed, and then the water inlet valve 65 and the water outlet valve 66 are opened. Water is introduced into the water inlet pipe 61 and flows to the external flushing pipe 67 and the flushing square pipe 69 through the inlet four-way pipe 63. The external flushing pipe 67 is used to flush the filter box 91 and the tank body 1. The filter material between the flushing square pipe 69 is flushed, and the filter material in the filter box 91 is flushed, and then the two adjacent groups of filter materials are flushed, thereby improving the flushing effect of the filter material and the efficiency of flushing impurities on the surface of the filter material. The sewage containing impurities after flushing is recovered through the connecting pipe 610 on the flushing square pipe 69, and the sewage is collected through the outlet four-way pipe 64 and the water outlet pipe 62, which increases multiple flushing points and reduces the thickness of the filter material, thereby avoiding excessive aging of the filter material and increasing the service life of the filter material.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sulfur autotrophic denitrification filter, It is characterized in that include: A tank body (1), wherein two groups of mounting seats (7) are symmetrically arranged on both sides of the inner cavity of the tank body (1), and detachable denitrification components (9) are arranged inside the two groups of mounting seats (7); and a backwashing device (6) is arranged on one side of the tank body (1); The denitrification component (9) comprises a filter box (91), a plurality of docking holes (97) are provided on one side of the filter box (91), a plurality of isolation grooves (95) are provided on both sides of the inner cavity of the filter box (91) adjacent to the plurality of docking holes (97), a filter screen plate (96) is inserted into the corresponding two isolation grooves (95), the inner cavity of the filter box (91) is formed with a plurality of nitrification chambers through the plurality of filter screen plates (96), and the plurality of docking holes (97) are respectively connected to the plurality of nitrification chambers; The backwashing device (6) comprises an inlet four-way pipe (63), an outlet four-way pipe (64) and a plurality of groups of flushing square pipes (69); both ends of the plurality of groups of flushing square pipes (69) are connected to connecting pipes (610) connected to the inlet four-way pipe (63) and the outlet four-way pipe (64); one side of the pool body (1) is provided with mounting holes (8) for the plurality of groups of flushing square pipes (69) to pass through; the plurality of groups of flushing square pipes (69) are connected to docking holes (97) on the filter box (91).

2. A sulfur autotrophic denitrification filter according to claim 1, Features: The water inlet end of the inlet four-way pipe (63) is connected to the water inlet pipe (61), two groups of water outlet ends of the inlet four-way pipe (63) are connected to the inlet connecting pipes (610) on the multiple groups of flushing square pipes (69), and the other group of water outlet ends of the inlet four-way pipe (63) is connected to the external flushing pipe (67).

3. A sulfur autotrophic denitrification filter according to claim 2, Features: The water outlet end of the outlet four-way pipe (64) is connected to the water outlet pipe (62), two groups of water inlet ends of the outlet four-way pipe (64) are connected to the outlet connecting pipes (610) on the plurality of groups of flushing square pipes (69), and the other group of water inlet ends of the outlet four-way pipe (64) is connected to the external return water pipe (68).

4. A sulfur autotrophic denitrification filter according to claim 3, Features: The three groups of water outlet ends of the inlet four-way pipe (63) are all provided with water inlet valves (65), the three groups of water inlet ends of the outlet four-way pipe (64) are all provided with water outlet valves (66), and the three groups of flushing ends of the external flushing pipe (67) are alternately arranged with the two groups of filter boxes (91).

5. A sulfur autotrophic denitrification filter according to claim 4, Features: The other side of the filter box (91) is detachably connected to a baffle (92), and both ends of one side of the baffle (92) are fixedly connected to multiple groups of plug blocks (94). The other side of the filter box (91) is provided with plug holes (93) for plugging the multiple groups of plug blocks (94).

6. The sulfur autotrophic denitrification filter according to claim 1, Features: The upper surface of the pool body (1) is connected to a water injection valve pipe (3), and the lower surface of the pool body (1) is connected to a water discharge valve pipe (4). The axis of the water injection valve pipe (3) and the axis of the water discharge valve pipe (4) are both arranged on the same straight line.

7. The sulfur autotrophic denitrification filter according to claim 1, Features: A plurality of groups of support seats (5) are fixedly connected to the lower surface of the pool body (1), and the plurality of groups of support seats (5) are arranged in a rectangular array.

8. The sulfur autotrophic denitrification filter according to claim 1, Features: Two groups of rectangular holes are provided on one side of the tank body (1) opposite to the multiple groups of mounting holes (8), and one end of each of the two groups of rectangular holes is hinged with an inspection door (2).

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