A filler suitable for anaerobic ammonia oxidizing bacteria attachment and a bioreactor

Abstract

The present invention discloses a filler and a bioreactor suitable for the attachment of anaerobic ammonia oxidizing bacteria, and relates to the technical field of sewage treatment. The filler suitable for the attachment of anaerobic ammonia oxidizing bacteria includes a sphere, a filler body and a top cover. The sphere includes a mounting portion, which is arranged on the cavity wall and arranged opposite to the feed inlet. The filler body is arranged in the accommodating cavity, and the top cover includes a connecting rod and a cover body connected to each other, and the cover body is arranged corresponding to the feed inlet. The connecting rod is used to insert the feed inlet and is threadedly connected with the mounting portion. One end of the connecting rod is fixedly connected to the cover body, and the other end is threadedly connected to the mounting portion of the sphere. While the connecting rod is connected to the mounting portion, the cover body can close the feed inlet of the sphere to prevent the filler body from scattering from the feed inlet. When multiple fillers collide with each other, compared with the existing snap-on connection, the threaded connection adopted by the present invention is not easy to fall off, which reduces the probability of disintegration due to excessive deformation of the filler, has higher reliability, and faster assembly efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a filler and a bioreactor suitable for the attachment of anaerobic ammonia oxidizing bacteria. Background Art

[0002] The suspended filler technology of anaerobic ammonium oxidizing bacteria is an innovative sewage treatment technology. It achieves an efficient and energy-saving denitrification process by pre-attaching anaerobic ammonium oxidizing bacteria to the suspended filler and applying it to the sewage treatment system.

[0003] The commonly used spherical suspended filler is formed by snapping two hemispheres together. This structure has a full three-dimensional structure, a large specific surface area, is easy to form a biofilm and does not clog. This structure allows the filler to fully contact the sewage and improve the efficiency of the biological reaction. However, the filler body in the existing filler is easy to scatter, which will reduce the attachment effect of anaerobic ammonia-oxidizing bacteria and seriously affect the efficiency of sewage treatment. Summary of the invention

[0004] In view of the shortcomings of the related technologies mentioned above, the present application provides a filler and a bioreactor suitable for the attachment of anaerobic ammonia-oxidizing bacteria to solve the above technical problems.

[0005] The present application provides a filler suitable for the attachment of anaerobic ammonia-oxidizing bacteria, comprising a sphere, a filler body and a top cover, wherein the sphere forms a accommodating cavity, the accommodating cavity has a feed inlet, the sphere is provided with a water through hole, the water through hole penetrates the cavity wall forming the accommodating cavity, the sphere comprises a mounting portion, the mounting portion is arranged on the cavity wall and is arranged opposite to the feed inlet, the filler body is arranged in the accommodating cavity, the top cover comprises a connecting rod and a cover body connected to each other, the cover body is arranged corresponding to the feed inlet, the connecting rod is used to be inserted into the feed inlet, and is threadedly connected to the mounting portion, and when the connecting rod is threadedly connected to the mounting portion, the cover body can close the feed inlet.

[0006] In one embodiment of the present application, the sphere also includes a top plate, which is arranged around the feed port and forms a first plane, the cover body has a second plane, and one end of the connecting rod close to the cover body is connected to the second plane, and when the connecting rod is threadedly connected to the mounting portion, the first plane and the second plane abut against each other.

[0007] In one embodiment of the present application, the mounting portion and the feed port are disposed at opposite ends of the same diameter of the sphere, and the length of the top cover is smaller than the diameter of the sphere.

[0008] In one embodiment of the present application, a first limit block is protruded from the first plane, the first limit block has a first inclined surface, and the thickness of the first limit block gradually decreases along the first direction, and a second limit block is protruded from the second plane to cooperate with the first limit block, the second limit block has a second inclined surface, and the thickness of the second limit block gradually decreases along the second direction, the first limit block can move from a first position to a second position along the first direction, when the first limit block is in the first position, the first inclined surface cooperates with the second inclined surface, when the first limit block is in the second position, the second limit block can stop at the first limit block along the second direction, wherein the first direction and the second direction are in opposite directions.

[0009] In one embodiment of the present application, the cover body includes a cover plate and a covering member, the second plane is formed on the cover plate, the covering member is configured as a hollow spherical crown structure, the covering member is connected to the peripheral side of the cover plate and covers the surface of the cover plate away from the connecting rod, the cover plate has a connecting hole, the connecting hole is opened in a partial area of ​​the second plane and passes through the cover plate, the cover body has a driving part, the driving part is protruded on the surface of the covering member away from the cover plate, and a reinforcing structure is provided on the peripheral side of the driving part.

[0010] In one embodiment of the present application, the first plane includes a first part and a second part, the first part is surrounded by the second part, the feed port is located in the second part, and when the connecting rod is threadedly connected to the mounting part, the cover body closes the second part, and a first step is formed between the first part and the cover body.

[0011] In one embodiment of the present application, the connecting rod is provided with a first through hole, the first through hole passes through the opposite ends of the connecting rod, the mounting portion is provided with a second through hole, the second through hole passes through the cavity wall of the accommodating cavity, and when the connecting rod is threadedly connected to the mounting portion, the first through hole is connected to the second through hole.

[0012] In one embodiment of the present application, the hole wall of the connecting rod is provided with a plurality of protrusion structures, and the plurality of protrusion structures are distributed along the circumference of the hole wall and are arranged at intervals;

[0013] Each of the protrusion structures includes a main body and a plurality of branches, wherein one end of the main body is connected to the hole wall of the first through hole, and the other end extends toward the axis of the first through hole, and one end of each of the branches is connected to the main body, and the other end extends along the circumference of the hole wall.

[0014] In one embodiment of the present application, the sphere includes a plurality of warp structures and a plurality of weft structures, the plurality of warp structures are spaced apart from each other, the plurality of weft structures are spaced apart from each other, the plurality of warp structures and the plurality of weft structures are staggered to form the cavity wall of the accommodating cavity, the mounting portion is interconnected with the plurality of warp structures, the mounting portion includes a first end and a second end that are far away from each other, the first end is protruded from the cavity wall and is located in the accommodating cavity, and the second end is protruded from the cavity wall and is located outside the accommodating cavity.

[0015] In one embodiment of the present application, the plurality of warp structures and the plurality of weft structures are both provided with reinforcing edges, and the reinforcing edges are provided on the inner wall or the outer wall of the sphere.

[0016] In one embodiment of the present application, reinforcing ribs are provided at the connections between the plurality of warp structures and the mounting portion, and one end of each of the reinforcing ribs is connected to the warp structure, and the other end is connected to the first end or the second end.

[0017] In one embodiment of the present application, the connecting rod includes a connecting section and a threaded section, one end of the connecting section is connected to the cover body, and the other end is connected to the threaded section, the threaded section is used to be threadedly connected to the mounting portion, and a second step is arranged between the connecting section and the threaded section.

[0018] To achieve the above-mentioned object and other related objects, the present application provides a bioreactor, comprising at least one container and the filler as described above, wherein the filler is arranged in the container.

[0019] The technical solution adopted by the present invention can achieve the following beneficial effects: the filler includes a sphere, a filler body and a top cover. The filler body can be placed in the accommodating cavity of the sphere via the feed inlet. The top cover includes a cover body and a connecting rod, one end of the connecting rod is fixedly connected to the cover body, and the other end is threadedly connected to the mounting portion of the sphere. While the connecting rod is connected to the mounting portion, the cover body can close the feed inlet of the sphere to prevent the filler body from scattering from the feed inlet. During the sewage treatment process, multiple fillers may collide with each other. Compared with the existing snap-on connection, the threaded connection adopted by the present invention is not easy to fall off, which reduces the probability of disintegration due to excessive deformation of the filler, has higher reliability, and faster assembly efficiency. The structural stability of the filler of the present invention is higher, which is conducive to the attachment of anaerobic ammonia-oxidizing bacteria and effectively ensures the efficiency of sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 is a schematic diagram of the structure of a filler shown in an exemplary embodiment of the present application;

[0022] Figure 2 is an exploded schematic diagram of a sphere and a top cover shown in an exemplary embodiment of the present application;

[0023] Figure 3 is a cross-sectional view of a sphere shown in an exemplary embodiment of the present application;

[0024] Figure 4 is a schematic structural diagram of a sphere and a top cover shown in another exemplary embodiment of the present application;

[0025] Figure 5 is a schematic structural diagram of a top cover shown in an exemplary embodiment of the present application;

[0026] Figure 6 yes Figure 5 Sectional view along line AA;

[0027] Figure 7 yes Figure 5 Sectional view along line BB;

[0028] Figure 8 It is a schematic diagram of the structure of a bioreactor shown in an exemplary embodiment of the present application.

[0029] In the figure: 1, bioreactor; 100, filler; 110, sphere; 110a, warp structure; 110b, weft structure; 111, accommodating chamber; 112, feed inlet; 113, water hole; 114, mounting portion; 114a, first end; 114b, second end; 1141, second through hole; 115, reinforcing edge; 116, reinforcing rib; 117, top plate; 1171, first plane; 1171a, first part; 1171b, second part; 120 , filling body; 130, top cover; 131, connecting rod; 1311, connecting section; 1312, threaded section; 1313, second step; 1314, first through hole; 1315, protrusion structure; 1316, main body; 1317, branch; 132, cover body; 1321, second plane; 1322, cover plate; 1323, covering member; 1324, connecting hole; 1325, driving unit; 141, first limit block; 142, second limit block; 200, container. DETAILED DESCRIPTION

[0030] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0031] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0032] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of each component relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0033] The suspended filler technology of anaerobic ammonium oxidizing bacteria is an innovative sewage treatment technology. It achieves an efficient and energy-saving denitrification process by pre-attaching anaerobic ammonium oxidizing bacteria to the suspended filler and applying it to the sewage treatment system.

[0034] The spherical suspended filler commonly used at present is formed by snapping two hemispheres together. This structure has a full three-dimensional structure, a large specific surface area, is easy to form biofilm and does not clog. This structure allows the filler to fully contact the sewage and improve the efficiency of biological reactions. However, during the sewage treatment process, multiple fillers may collide with each other. When the filler is greatly deformed, there is a risk of disengagement, and the spherical structure of the filler is destroyed. This will cause the filler body in the filler to scatter, reduce the attachment effect of anaerobic ammonia-oxidizing bacteria, and seriously affect the efficiency of sewage treatment.

[0035] In order to solve the above technical problems, the present application embodiment provides a filler 100 suitable for the attachment of anaerobic ammonia oxidizing bacteria, which is referred to as filler 100 in the following content. Figure 1, the anaerobic ammonium oxidizing bacteria are attached to the filler 100, and the filler 100 is applied to the sewage treatment system. The filler 100 can facilitate the stable attachment of the anaerobic ammonium oxidizing bacteria and increase the contact area between the anaerobic ammonium oxidizing bacteria and the sewage to achieve an efficient and energy-saving denitrification process.

[0036] Please also read Figure 1 as well as Figure 2 The filler 100 includes a sphere 110 , a filler body 120 and a top cover 130 . The filler body 120 is disposed on the sphere 110 , and the top cover 130 is connected to and seals the sphere 110 .

[0037] More specifically, the shape of the sphere 110 can be roughly spherical, and the spherical structure is conducive to the stable attachment of anaerobic ammonia oxidizing bacteria and increases the contact area between anaerobic ammonia oxidizing bacteria and sewage. The sphere 110 has a certain elasticity and strength, which can buffer external impact. The sphere 110 forms a accommodating cavity 111, and the accommodating cavity 111 has an inlet 112. Among them, the diameter of the inlet 112 can be greater than or equal to the diameter of the sphere 110, and the sphere 110 can be a hemisphere or a spherical segment structure larger than a hemisphere. The inlet 112 connects the accommodating cavity 111 with the outside world, and the filler body 120 can enter the accommodating cavity 111 of the sphere 110 through the inlet 112. The sphere 110 can avoid external impacts that damage the structural stability of the filler body 120, thereby increasing the service life of the filler 100.

[0038] Please continue reading Figure 1 The sphere 110 is provided with a water hole 113. The shape of the water hole 113 can be rectangular, circular or other irregular shapes, etc., which is not limited in the present application. The water hole 113 penetrates through the cavity wall of the accommodating cavity 111. The water hole 113 can be used for sewage circulation, so that the filler body 120 accommodated in the accommodating cavity 111 can be fully in contact with the sewage to complete the sewage treatment. Among them, the number of water holes 113 can be multiple, and multiple water holes 113 can improve the flow effect of sewage and further improve the effect of sewage treatment.

[0039] Preferably, the size of the filler body 120 may be smaller than the water hole 113 to prevent the filler body 120 from falling out of the sphere 110 through the water hole 113 , thereby improving the safety of the filler body 120 .

[0040] See also Figure 2 The sphere 110 may include a mounting portion 114, which may be configured as a cylinder or a cube, etc., which is not limited in this embodiment. The mounting portion 114 may be disposed on the cavity wall of the accommodating cavity 111, and the mounting portion 114 may be integrated with the sphere 110, thereby improving the structural stability of the sphere 110 and increasing the service life of the filler 100.

[0041] See also Figure 3The mounting portion 114 and the feed opening 112 are arranged opposite to each other, and the feed opening 112 allows at least a portion of the top cover 130 to pass through, and this arrangement can facilitate the connection between the mounting portion 114 and the top cover 130. Specifically, the mounting portion 114 and the feed opening 112 are arranged at opposite ends of the same diameter of the sphere 110. The mounting portion 114 and the feed opening 112 are located at opposite ends of the sphere 110. After the mounting portion 114 or the feed opening 112 is impacted by the outside world, the impact force can be evenly transmitted to various parts of the sphere 110, thereby avoiding stress concentration at a certain part of the sphere 110 and affecting the overall stability of the sphere 110.

[0042] In this example, please refer to Figure 1 The sphere 110 may include a plurality of warp structures 110a and a plurality of weft structures 110b, the plurality of warp structures 110a are arranged at intervals, the plurality of weft structures 110b are arranged at intervals, and the plurality of warp structures 110a and the plurality of weft structures 110b are arranged alternately to form the cavity wall of the accommodating cavity 111. The combination of the warp structures 110a and the weft structures 110b may form a plurality of regularly distributed water holes 113, which may also make the structure of the sphere 110 more stable and improve the protection capability of the sphere 110.

[0043] To improve the protection capability of the sphere 110, please refer to Figure 1 as well as Figure 3 In this embodiment, the plurality of warp structures 110a and the plurality of weft structures 110b are both provided with reinforcing ridges 115, and the reinforcing ridges 115 are provided on the inner wall of the sphere 110. The reinforcing ridges 115 increase the cross-sectional areas of the plurality of warp structures 110a and the plurality of weft structures 110b, thereby increasing their structural strength, so as to improve the protective capability of the sphere 110.

[0044] In another embodiment, see Figure 4 The plurality of warp structures 110a and the plurality of weft structures 110b are both provided with reinforcing edges 115. The reinforcing edges 115 may be provided on the outer wall of the sphere 110, which will not be described in detail in this embodiment.

[0045] For further information, please refer to Figure 3 The mounting portion 114 is connected to the plurality of warp structures 110a, and the mounting portion 114 includes a first end 114a and a second end 114b that are away from each other. The first end 114a is protruded from the cavity wall and is located inside the accommodating cavity 111. The second end 114b is protruded from the cavity wall and is located outside the accommodating cavity 111. The protruding arrangement of the first end 114a and the second end 114b can help improve the structural strength of the mounting portion 114, thereby improving the connection effect between the sphere 110 and the top cover 130.

[0046] To improve the structural stability of the mounting portion 114, please continue to refer to Figure 3In this embodiment, a reinforcing rib 116 is provided at the connection between the plurality of warp structures 110a and the mounting portion 114, and one end of each reinforcing rib 116 is connected to the warp structure 110a, and the other end is connected to the first end 114a or the second end 114b. More specifically, a portion of the plurality of reinforcing ribs 116 is connected between the warp structure 110a and the first end 114a, and the remaining portion is connected between the warp structure 110a and the second end 114b. This arrangement can significantly improve the structural stability of the mounting portion 114, so that the mounting portion 114 can withstand a larger load or stress, and further improve the connection effect between the sphere 110 and the top cover 130.

[0047] In this example, see Figure 1 The filler body 120 may be an anaerobic ammonium oxidation filler, and the filler body 120 is disposed in the accommodation cavity 111. Further, the number of the filler body 120 may be multiple, and multiple filler bodies 120 are disposed in the accommodation cavity 111. The sphere 110 can protect the filler body 120, prevent external impact from damaging the structural stability of the filler body 120, and improve the service life of the filler 100. In addition, the sphere 110 can relatively fix the filler body 120 to prevent it from being too dispersed.

[0048] In this example, please refer to Figure 2 The top cover 130 may include a connecting rod 131 and a cover body 132, and the connecting rod 131 and the cover body 132 are connected to each other. The connecting rod 131 may be in a rod shape so as to be inserted into the feed port 112. The cover body 132 may be a spherical segment or a spherical cap structure. The cover body 132 may cooperate with the shape of the sphere 110, and the combination of the two may form a complete spherical structure. The cover body 132 is arranged corresponding to the feed port 112, and the size or shape of the cover body 132 and the feed port 112 may be adapted to each other.

[0049] The connecting rod 131 is used to be inserted into the feed port 112 and is threadedly connected to the mounting portion 114. When the connecting rod 131 is threadedly connected to the mounting portion 114, the cover body 132 can close the feed port 112. The cover body 132 connected to the connecting rod 131 can be inserted into the feed port 112 to prevent the filler body 120 from falling out of the filler 100 from the feed port 112, thereby improving the protection capability of the filler body 120. At the same time, compared with the snap connection, the threaded connection of this arrangement is not easy to fall off, thereby ensuring the connection stability between the top cover 130 and the sphere 110. This arrangement can reduce the probability of disintegration due to excessive deformation of the filler 100, and has higher reliability and faster assembly efficiency.

[0050] In addition, during the process of threaded connection between the connecting rod 131 and the mounting portion 114, the connecting rod 131 is always inserted into the feed port 112. The connecting rod 131 can reduce the conduction area of ​​the feed port 112 to limit the filler body 120 from falling out of the filler 100 through the feed port 112, further improving the protection capability of the filler body 120.

[0051] In a more specific implementation, please continue to refer to Figure 2 The connecting rod 131 may include a connecting section 1311 and a threaded section 1312, one end of the connecting section 1311 is connected to the cover body 132, and the other end is connected to the threaded section 1312. The threaded section 1312 is used for threaded connection with the mounting portion 114. For example, the threaded section 1312 is provided with an external thread, and the mounting portion 114 is provided with an internal thread, and the external thread and the internal thread cooperate with each other so that the connecting rod 131 is threadedly connected to the mounting portion 114. Preferably, this embodiment can also improve the structural strength of the external thread and the internal thread by adjusting the parameters such as the tooth angle and the pitch of the external thread and the internal thread, and improve the strength and service life of the threaded connection.

[0052] In addition, a second step 1313 is disposed between the connecting section 1311 and the threaded section 1312. When the threaded section 1312 is threadedly connected to the mounting portion 114, the second step 1313 can abut against the surface of the mounting portion 114 close to the connecting rod 131. The second step 1313 can limit the relative position between the connecting rod 131 and the mounting portion 114. This arrangement can prevent the connecting rod 131 from rotating excessively, thereby preventing the ball 110 from being excessively deformed, and thus ensuring the structural stability of the ball 110.

[0053] It is understandable that in some other cases, the threaded section 1312 can also be configured as an internal thread, the mounting portion 114 is set as an external thread, and the second step 1313 is located in the inner wall of the connecting rod 131, which is not repeated in this embodiment.

[0054] In another embodiment, see Figure 2 as well as Figure 5, the sphere 110 may further include a top plate 117, and the top plate 117 may be configured in a circular ring shape, etc. The top plate 117 is arranged around the feed port 112 and forms a first plane 1171. The first plane 1171 may be perpendicular to a certain diameter of the sphere 110. The cover body 132 has a second plane 1321. Exemplarily, the cover body 132 may be a spherical segment body, and the second plane 1321 may be the bottom surface of the cover body 132, and the second plane 1321 and the first plane 1171 are arranged correspondingly. One end of the connecting rod 131 close to the cover body 132 is connected to the second plane 1321. When the connecting rod 131 is threadedly connected to the mounting portion 114, the first plane 1171 and the second plane 1321 abut against each other. In addition to the self-locking of the threads between the connecting rod 131 and the mounting portion 114 , the friction between the first plane 1171 and the second plane 1321 can prevent the top cover 130 and the sphere 110 from sliding relative to each other, further improving the connection stability between the top cover 130 and the sphere 110 .

[0055] Preferably, the length of the top cover 130 is smaller than the diameter of the sphere 110, in other words, the length of the connecting rod 131 is smaller than the distance between the first plane 1171 and the mounting portion 114. When the connecting rod 131 is threadedly connected to the mounting portion 114, this arrangement can force the sphere 110 and / or the cover 132 to elastically deform and generate elastic force, which acts on the first plane 1171 and / or the second plane 1321, thereby increasing the squeezing force between the sphere 110 and the cover 132. The squeezing force can increase the friction between the first plane 1171 and the second plane 1321, while also improving the self-locking effect of the thread between the connecting rod 131 and the mounting portion 114.

[0056] In this example, see Figure 2 The first plane 1171 is provided with a first stopper 141, and the second plane 1321 is provided with a second stopper 142, and the first stopper 141 cooperates with the second stopper 142. The protruding arrangement of the first stopper 141 and the second stopper 142 can force the deformation between the top cover 130 and the sphere 110 to increase, and the extrusion force increases synchronously, thereby increasing the friction between the first plane 1171 and the second plane 1321, and also improving the thread self-locking effect between the connecting rod 131 and the mounting portion 114.

[0057] Please continue reading Figure 2 The thickness of the first limit block 141 is along the first direction (eg Figure 2 The thickness of the second limit block 142 decreases gradually along the second direction (as shown in L1 of FIG. 1 ), and the surface of the first limit block 141 close to the top cover 130 is set as a first inclined surface. Figure 2L2 as shown in the figure gradually decreases, and the surface of the second limit block 142 close to the top cover 130 is set as a second inclined surface. Among them, the first direction and the second direction are opposite, and are set around the axis of the feed port 112. For example, the first direction can be counterclockwise, and the second direction can be clockwise. The first limit block 141 can move from the first position to the second position along the first direction. When the first limit block 141 is in the first position, the first inclined surface cooperates with the second inclined surface. During the movement, the first limit block 141 and the second limit block 142 can be separated from each other along the axial direction of the sphere 110, and the sphere 110 and the cover body 132 squeeze each other and deform until the first inclined surface is separated from the second inclined surface, the sphere 110 and the cover body 132 resume deformation, and the first limit block 141 and the second limit block 142 are close to each other again, and the first limit block 141 reaches the second position at this time.

[0058] On the other hand, when the first limit block 141 is located in the second position, the second limit block 142 can stop at the first limit block 141 along the second direction, that is, the side of the second limit block 142 abuts against the side of the first limit block 141, and the second limit block 142 can limit the first limit block 141 from rotating along the second direction. When the first limit block 141 is located in the second position, the first limit block 141 can rotate along the first direction. This setting realizes one-way rotation through the first inclined surface and the second inclined surface, and the one-way rotation setting can cooperate with the threaded connection, that is, the first direction is the pre-tightening direction of the threaded connection, and the second direction is the loosening direction of the threaded connection. The installer easily installs the top cover 130 and the sphere 110. The cooperation of the one-way rotation setting and the threaded connection can prevent the top cover 130 from detaching from the sphere 110, thereby improving the stability of the filler 100.

[0059] It is understandable that when the top cover 130 is detached from the sphere 110, the installer can squeeze the sphere 110 in the axial direction, so that the sphere 110 is compressed and deformed in the axial direction. In the axial direction of the sphere 110, the first limit block 141 and the second limit block 142 gradually move away from each other until they are relatively separated, and the limiting effect between the first limit block 141 and the second limit block 142 is released, and the installer can easily release the threaded connection between the top cover 130 and the sphere 110.

[0060] In addition, the number of the first limit block 141 and the second limit block 142 can be multiple, and the multiple first limit blocks 141 are arranged at intervals, and the multiple second limit blocks 142 are arranged at intervals. This arrangement can improve the force effect of the first limit block 141 and the second limit block 142, avoid excessive deformation of the sphere 110 and the top cover 130 in a single direction, so that the force on the two is more uniform.

[0061] In some other cases, one of the first plane 1171 and the second plane 1321 is provided with a convex stopper, and the other is provided with a concave stopper corresponding to the stopper. The stopper and the stopper can be provided with a first inclined surface and a second inclined surface that cooperate with each other, which can also achieve a one-way rotation effect between the top cover 130 and the sphere 110.

[0062] Preferably, see Figure 2 , the first plane 1171 may include a first portion 1171a and a second portion 1171b, the first portion 1171a is surrounded by the second portion 1171b, the feed port 112 is located at the second portion 1171b, when the connecting rod 131 is threadedly connected to the mounting portion 114, the cover 132 closes the second portion 1171b, and a first step is formed between the first portion 1171a and the cover 132. This arrangement can ensure that the edge of the cover 132 does not extend out of the first plane 1171, avoid stress concentration at the edge of the cover 132, and further affect the structural stability of the filler 100. In addition, this arrangement can ensure that the outer contour of the filler 100 is more rounded, ensure its own movement performance, and facilitate the movement of the filler 100 in sewage.

[0063] In some other cases, when the connecting rod 131 is threadedly connected to the mounting portion 114 , the cover 132 can simultaneously close the first portion 1171a and the second portion 1171b , thereby increasing the contact area between the first plane 1171 and the second plane 1321 and improving the structural stability of the filler 100 .

[0064] In this example, see Figure 2 , the cover body 132 may include a cover plate 1322 and a cover 1323. The cover 1323 is configured as a hollow spherical cap structure. In other words, the cover 1323 may be a spherical cap structure, and the cover 1323 is provided with a plurality of through holes for sewage to flow, thereby forming a hollow spherical cap structure. The cover 1323 of the hollow spherical cap structure can ensure that the outer contour of the filler 100 is more rounded, ensure its own movement performance, and facilitate the movement of the filler 100 in the sewage, and can also improve the flow effect of the sewage, further ensure that the anaerobic ammonia-oxidizing bacteria and the sewage are in full contact, and improve the sewage treatment effect of the filler 100.

[0065] Please also read Figure 2 as well as Figure 5, the second plane 1321 is formed on the cover plate 1322. The cover 1323 is connected to the peripheral side of the cover plate 1322 and covers the surface of the cover plate 1322 away from the connecting rod 131. The cover plate 1322 has a connecting hole 1324, and the connecting hole 1324 can be used for sewage to flow, so as to prevent the cover plate 1322 from affecting the flow effect of sewage and the top cover 130. The connecting hole 1324 is opened in a partial area of ​​the second plane 1321 and passes through the cover plate 1322. This arrangement not only ensures that the second plane 1321 of the cover plate 1322 has a sufficient contact area with the first plane 1171, ensures the structural stability of the filler 100, but also further improves the flow effect of sewage and improves the sewage treatment effect of the filler 100.

[0066] In addition, please refer to Figure 2 The cover body 132 has a driving part 1325, which is convexly arranged on the surface of the cover 1323 away from the cover plate 1322. The driving part 1325 can be held and rotated by the installer, which is conducive to improving the operability of the threaded connection. In addition, a reinforcement structure is arranged on the peripheral side of the driving part 1325, which can prevent the driving part 1325 from being impacted by the outside world, and can also improve the connection effect between the driving part 1325 and the cover 1323, and prevent the driving part 1325 from falling off during the rotation process.

[0067] See also Figure 6 The connecting rod 131 is provided with a first through hole 1314, and the first through hole 1314 passes through the opposite ends of the connecting rod 131. The first through hole 1314 can increase the surface area of ​​the connecting rod 131 and improve the attachment area of ​​anaerobic ammonia oxidizing bacteria. The first through hole 1314 can be used for sewage circulation to ensure that the anaerobic ammonia oxidizing bacteria and the sewage are in full contact. The mounting portion 114 is provided with a second through hole 1141, and the second through hole 1141 passes through the cavity wall of the accommodating cavity 111. When the connecting rod 131 is threadedly connected to the mounting portion 114, the first through hole 1314 is connected to the second through hole 1141. The second through hole 1141 can prevent the mounting portion 114 from blocking the first through hole 1314, thereby ensuring the flow effect of sewage in the first through hole 1314.

[0068] In a more specific embodiment, see Figure 7, the hole wall of the connecting rod 131 is provided with a plurality of protrusion structures 1315, that is, a plurality of protrusion structures 1315 are formed on the hole wall of the first through hole 1314. More specifically, the plurality of protrusion structures 1315 are distributed circumferentially along the hole wall of the first through hole 1314 and are arranged at intervals from each other, and each protrusion structure 1315 includes a main body 1316 and a plurality of branches 1317, one end of the main body 1316 is connected to the hole wall of the first through hole 1314, and the other end extends toward the axis of the first through hole 1314. One end of each branch 1317 is connected to the main body 1316, and the other end extends circumferentially along the hole wall of the first through hole 1314. Exemplarily, the plurality of branches 1317 connected to the same main body 1316 are distributed radially along the hole wall of the first through hole 1314. Moreover, in the radial direction of the hole wall of the first through hole 1314, the lengths of the plurality of branches 1317 decrease sequentially. The protrusion structure 1315 can significantly increase the attachment area of ​​the anaerobic ammonium oxidizing bacteria, thereby increasing the contact area between the anaerobic ammonium oxidizing bacteria and sewage, and significantly improving the sewage treatment effect of the filler 100.

[0069] See also Figure 8 , which is a bioreactor 1 shown in another exemplary embodiment of the present application, and the bioreactor 1 may include a plurality of fillers 100 as described above and at least one container 200. The container 200 may be a bioreactor pool or a bioreactor tank, etc., which is not limited in this embodiment. A plurality of fillers 100 are arranged in the container 200. The sewage flows into the container 200 and is fully contacted with the anaerobic ammonia-oxidizing bacteria in the filler 100 to complete the sewage treatment.

[0070] The filler 100 and the bioreactor 1 suitable for the attachment of anaerobic ammonia-oxidizing bacteria provided in this embodiment include a sphere 110, a filler body 120 and a top cover 130. The filler body 120 can be placed in the accommodating cavity 111 of the sphere 110 via the feed port 112. The top cover 130 includes a cover 132 and a connecting rod 131, one end of the connecting rod 131 is fixedly connected to the cover 132, and the other end is threadedly connected to the mounting portion 114 of the sphere 110. While the connecting rod 131 is connected to the mounting portion 114, the cover 132 can close the feed port 112 of the sphere 110 to prevent the filler body 120 from scattering from the feed port 112. During the sewage treatment process, multiple fillers 100 may collide with each other. Compared with the existing snap-on connection, the threaded connection between the sphere 110 and the top cover 130 in this embodiment is not easy to fall off, which reduces the probability of disintegration due to excessive deformation of the filler 100, and has higher reliability and faster assembly efficiency. The filler 100 of the present embodiment has a higher structural stability, which is conducive to the attachment of anaerobic ammonia-oxidizing bacteria and effectively ensures the efficiency of sewage treatment.

[0071] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0072] In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0073] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A filler suitable for the attachment of anaerobic ammonia-oxidizing bacteria, characterized in that: include: A sphere, wherein the sphere is a spherical segment structure larger than a hemispherical shell, the sphere forms a receiving cavity, the receiving cavity has a material inlet, the sphere is provided with a water hole, the water hole penetrates through a cavity wall of the receiving cavity, and the sphere includes a mounting portion, the mounting portion is arranged on the cavity wall and is arranged opposite to the material inlet; A filler body, wherein the filler body is disposed in the accommodating cavity; as well as The top cover includes a connecting rod and a cover body connected to each other, the cover body is arranged corresponding to the feed port, the connecting rod is used to be inserted into the feed port and is threadedly connected to the mounting portion, and when the connecting rod is threadedly connected to the mounting portion, the cover body can close the feed port.

2. The filler according to claim 1, characterized in that The sphere also includes a top plate, which is arranged around the feed port and forms a first plane. The cover body has a second plane. One end of the connecting rod close to the cover body is connected to the second plane. When the connecting rod is threadedly connected to the mounting portion, the first plane and the second plane abut against each other.

3. The filler according to claim 2, characterized in that The mounting portion and the feed port are disposed at opposite ends of the same diameter of the sphere, and the length of the top cover is smaller than the diameter of the sphere; And / or, a first limit block is convexly provided on the first plane, the first limit block has a first inclined surface, and the thickness of the first limit block gradually decreases along the first direction, and a second limit block is convexly provided on the second plane to cooperate with the first limit block, the second limit block has a second inclined surface, and the thickness of the second limit block gradually decreases along the second direction, the first limit block can move from a first position to a second position along the first direction, when the first limit block is in the first position, the first inclined surface cooperates with the second inclined surface, when the first limit block is in the second position, the second limit block can stop at the first limit block along the second direction, wherein the first direction and the second direction are in opposite directions.

4. The filler according to claim 2, characterized in that The cover body comprises a cover plate and a covering member, the second plane is formed on the cover plate, the covering member is configured as a hollow spherical crown structure, the covering member is connected to the peripheral side of the cover plate and covers the surface of the cover plate away from the connecting rod, the cover plate has a connecting hole, the connecting hole is opened in a partial area of ​​the second plane and passes through the cover plate, the cover body has a driving part, the driving part is convexly arranged on the surface of the covering member away from the cover plate, and a reinforcing structure is arranged on the peripheral side of the driving part; And / or, the first plane includes a first part and a second part, the first part is surrounded by the second part, the feed port is located in the second part, when the connecting rod is threadedly connected to the mounting part, the cover body closes the second part, and a first step is formed between the first part and the cover body.

5. The filler according to claim 1, characterized in that The connecting rod is provided with a first through hole, which passes through the opposite ends of the connecting rod. The mounting portion is provided with a second through hole, which passes through the cavity wall of the accommodating cavity. When the connecting rod is threadedly connected to the mounting portion, the first through hole is connected with the second through hole.

6. The filler according to claim 5, characterized in that The hole wall of the connecting rod is provided with a plurality of protrusion structures, and the plurality of protrusion structures are distributed along the circumference of the hole wall and are arranged at intervals; Each of the protrusion structures includes a main body and a plurality of branches, wherein one end of the main body is connected to the hole wall of the first through hole, and the other end extends toward the axis of the first through hole, and one end of each of the branches is connected to the main body, and the other end extends along the circumference of the hole wall.

7. The filler according to claim 1, characterized in that The sphere includes a plurality of warp structures and a plurality of weft structures, wherein the plurality of warp structures are spaced apart from each other, and the plurality of weft structures are spaced apart from each other, and the plurality of warp structures and the plurality of weft structures are staggered to form the cavity wall of the accommodating cavity, and the mounting portion is interconnected with the plurality of warp structures, and the mounting portion includes a first end and a second end that are far away from each other, the first end protruding from the cavity wall and located in the accommodating cavity, and the second end protruding from the cavity wall and located outside the accommodating cavity.

8. The packing according to claim 7, characterized in that The plurality of warp structures and the plurality of weft structures are all provided with reinforcing edges, and the reinforcing edges are provided on the inner wall or the outer wall of the sphere; And / or, reinforcing ribs are provided at the connections between the plurality of warp structures and the mounting portion, and one end of each of the reinforcing ribs is connected to the warp structure, and the other end is connected to the first end or the second end.

9. The filler according to claim 1, characterized in that The connecting rod includes a connecting section and a threaded section, one end of the connecting section is connected to the cover body, and the other end is connected to the threaded section, the threaded section is used for threaded connection with the mounting portion, and a second step is arranged between the connecting section and the threaded section.

10. A bioreactor, characterized in that: The method comprises at least one container and the filler according to any one of claims 1 to 9, wherein the filler is arranged in the container.

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