Filler beneficial to attachment of anaerobic ammonium oxidation bacteria
By designing a structure of multiple extension plates to separate through holes in the MBBR filler, the problem of anaerobic ammonia oxidizing bacteria is solved, the number of adhesions and sewage treatment effects are improved, the impact of overlapping fillers is avoided, and the sewage treatment capacity is improved.
Patent Information
- Application Number
- CN202422734840.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-11-11
AI Technical Summary
Among the existing MBBR fillers, anaerobic ammonia oxidizing bacteria are not easy to adhere, resulting in a small number and poor sewage treatment effect.
A filler structure including a filler body and a plurality of extension plates is designed. The through-hole inner wall and the extension plate surface are used for adhering to the bacteria. The extension plate separates the internal space of the through-hole to expand the attachment area and limits the extension direction of the extension plate. Balanced separation effect to increase the adhesion of anaerobic ammonia bacteria.
It effectively improves the adhesion area and quantity of anaerobic ammonia oxidizing bacteria, enhances the sewage treatment effect, avoids the phenomenon of filler overlap, and improves the sewage treatment capacity.
Smart Images
Figure CN222181976U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of biological fillers, and in particular relates to a filler which is beneficial to the attachment of anaerobic ammonia oxidizing bacteria. Background Art
[0002] The Moving-Bed Biofilm Reactor (MBBR) process is a new and efficient sewage treatment method. It uses the basic principles of the biofilm method. By adding a certain amount of suspended carriers into the reactor, the carriers are fluidized by the aeration and water flow in the aeration tank, thereby forming suspended activated sludge and attached biofilm. This allows the moving bed biofilm to use the entire reactor space, increase the biomass and biological species in the reactor, and thus improve the treatment efficiency of the reactor.
[0003] In the prior art, MBBR fillers are carriers of microorganisms, providing a place for the reproduction and habitat of microorganisms, and are important supplies for water treatment. Anaerobic bacteria are generally attached to the inside of the fillers, and aerobic bacteria are generally attached to the outside of the fillers. Bacteria involved in the anaerobic ammonium oxidation process are called anaerobic ammonium oxidizing bacteria. Anaerobic ammonium oxidizing bacteria can directly convert ammonia nitrogen into nitrogen gas in the absence of oxygen through the anaerobic ammonium oxidation process, thereby achieving nitrogen removal in sewage. It is of great significance to the global nitrogen cycle and is also an important bacterium in sewage treatment.
[0004] However, in the existing filler structure, anaerobic ammonium oxidizing bacteria are not easy to attach, resulting in a small number of anaerobic ammonium oxidizing bacteria in the filler and a poor sewage treatment effect. Utility Model Content
[0005] The purpose of the present application is to provide a filler that is conducive to the attachment of anaerobic ammonia-oxidizing bacteria, so as to solve the above-mentioned technical problems existing in the prior art.
[0006] This application is implemented by:
[0007] An embodiment of the present application provides a filler that is conducive to the attachment of anaerobic ammonia-oxidizing bacteria, including a filler body and a plurality of extension plates, the filler body having a plurality of through holes, the through holes penetrating the axial ends of the filler body; the extension plates are installed in the through holes, and the extension plates are fixed to the inner walls of the through holes, at least in part of the through holes, including extension plates extending radially along the filler body and extension plates extending circumferentially along the filler body; the inner walls of the through holes and the surfaces of the extension plates are both used for bacterial attachment.
[0008] The beneficial effects of this application are:
[0009] In the present application, an extension plate is fixed on the inner wall of the through hole and the space inside the through hole is divided by the extension plate, thereby expanding the area to which anaerobic ammonia-oxidizing bacteria can attach, improving the convenience of anaerobic ammonia-oxidizing bacteria attachment, and increasing the number of anaerobic ammonia-oxidizing bacteria attachment, thereby improving the sewage treatment effect; and by limiting the extension direction of the extension plate, the separation direction of the through hole by the extension plate is limited, thereby balancing the separation effect of the extension plate on the through hole and improving the utilization rate of the through hole. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments of the utility model or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0011] Figure 1 The overall structure of the filler provided in some embodiments of the present application is shown in FIG. Figure 1 ;
[0012] Figure 2 The overall structure of the filler provided in some embodiments of the present application is shown in FIG. Figure 2 ;
[0013] Figure 3 is a cross-sectional view of a filler provided in some embodiments of the present application;
[0014] Figure 4 The overall structure of the filler provided in some embodiments of the present application is shown in FIG. Figure 3 ;
[0015] Figure 5 This is a schematic diagram of the packing provided in some embodiments of the present application. Figure 1 ;
[0016] Figure 6 This is a schematic diagram of the packing provided in some embodiments of the present application. Figure 2 .
[0017] In the figure: 100 - filler body, 110 - through hole, 120 - first annular plate, 130 - second annular plate, 140 - connecting plate, 200 - extension plate, 300 - first protrusion, 400 - second protrusion. DETAILED DESCRIPTION
[0018] The following description provides many different embodiments or examples for implementing different features of the present invention. The components and arrangements described in the following specific examples are only used to simplify the present invention and are only used as examples, not to limit the present invention.
[0019] The present application embodiment provides a filler that is conducive to the attachment of anaerobic ammonia oxidizing bacteria, referring to Figures 1 to 6 As shown. The filler provided in the embodiment of the present application includes a filler body 100 and a plurality of extension plates 200. The filler body 100 is the main structure of the filler, and the filler body 100 has a plurality of through holes 110, and the through holes 110 are arranged at both axial ends of the filler body 100. The through holes 110 form a space for water to flow through, and the inner wall of the through hole 110 is used for the attachment of anaerobic ammonia oxidizing bacteria. A plurality of extension plates 200 are installed in the through holes 110. Generally, only the extension plates 200 are installed in the through holes 110 with larger sizes, and the extension plates 200 are fixed to the inner wall of the through holes 110. The surface of the extension plates 200 is also used for the attachment of anaerobic ammonia oxidizing bacteria. The extension plates 200 are used to separate the internal space of the through holes 110, expand the area where anaerobic ammonia oxidizing bacteria can attach, improve the convenience of anaerobic ammonia oxidizing bacteria attachment, and increase the number of anaerobic ammonia oxidizing bacteria attachment, thereby improving the sewage treatment effect.
[0020] In at least part of the through hole 110, the through hole 110 includes an extension plate 200 extending in the radial direction of the packing body 100 and an extension plate 200 extending in the circumferential direction of the packing body 100. Figures 1 to 3 As shown. By limiting the extension direction of the extension plate 200, the separation direction of the extension plate 200 on the through hole 110 is limited, thereby balancing the separation effect of the extension plate 200 on the through hole 110 and improving the utilization rate of the through hole 110. Furthermore, by limiting the installation position of the extension plate 200, the extension plates 200 in the same through hole 110 are distributed as evenly as possible along the circumference of the through hole 110, and the length of the extension plate 200 is generally less than half of the size of the through hole 110, which fully improves the separation effect of the extension plate 200 on the through hole 110.
[0021] The extension direction of the extension plate 200 means that one end of the extension plate 200 is fixed to the inner wall of the through hole 110, and the other end extends toward the through hole 110, and the extension direction of the other end in the through hole 110 is the extension direction of the extension plate 200. In some embodiments of the present application, in the axial direction of the filler body 100, the length of the extension plate 200 is equal to the length of the through hole 110, and the two ends of the extension plate 200 are flush with the two ends of the through hole 110, so as to fully expand the surface area of the extension plate 200 that can be used for attaching bacteria without affecting the overall size of the filler.
[0022] In the specific use of the filler, the filler is put into the reactor. The filler is in a fluidized state mainly by aeration and the lifting effect of water flow. In actual engineering, it is easy to have partial overlap of the filler. The two end faces of the filler are flat, and it is not easy for the filler to separate after stacking, which eventually causes part of the filler on the top to be exposed to the water surface. Microorganisms cannot survive on this part of the filler, and the normal function of this part of the filler is affected, which will lead to a decrease in the sewage treatment capacity of the reactor.
[0023] To solve the above problem, in some embodiments of the present application, the filler further includes a first protrusion 300, and the first protrusion 300 is a ring-shaped structure. Figures 1 to 5 As shown, the first protrusion 300 is fixed to the axial end surface of the filler body 100. The first protrusion 300 destroys the flatness of the axial end surface of the filler body 100. Even if the upper and lower fillers overlap, the contact between the two fillers is not stable, the upper filler is easy to shake, and the contact area between the two fillers is small. Under the action of water flow, the two are easy to separate, thereby releasing the overlapping state, thereby avoiding the overlap of the fillers affecting the treatment effect of sewage.
[0024] The annular structure of the first protrusion 300 can be a continuous annular structure. In other embodiments, the first protrusion 300 can also be an annular structure formed by a plurality of protrusions arranged in a circle. The protrusions are spaced a certain distance apart. Under this structure, the stability of the overlap of the upper and lower fillers can be further weakened, and the contact area between the two can be reduced. In addition, it should be noted that the distance between two adjacent protrusions needs to be greater than or less than the size of the protrusions, so as to prevent the protrusion of any filler from being stuck between the protrusions of another filler, resulting in the situation where the two overlapping fillers cannot be separated.
[0025] In some preferred embodiments of the present application, the first protrusion 300 is coaxially arranged with the packing body 100. The packing body 100 is generally a rotationally symmetrical structure, and the first protrusion 300 is coaxial with the packing body 100 to ensure the stability of the center of gravity of the packing as a whole. The diameter of the first protrusion 300 is greater than or equal to one-half of the diameter of the packing body 100. The diameter of the first protrusion 300 should not be too small, and its minimum diameter needs to be greater than the radius of the packing body 100.
[0026] In this layout, even if the upper and lower fillers overlap and the fit between them is relatively stable, refer to Figure 5 As shown, the first protrusion 300 of the upper filler is attached to the end surface of the filler body 100 of the lower filler, and the first protrusion 300 of the lower filler is attached to the end surface of the filler body 100 of the upper filler. Due to the size limitation of the first protrusion 300, the gravity direction of the upper filler is located outside the lower filler, and the upper and lower fillers are more likely to separate. Figure 5In the figure, the direction of gravity of the upper filler is indicated by a dotted arrow.
[0027] In some preferred embodiments of the present application, reference is made to Figures 1 to 3 As shown, the first protrusion 300 is formed by extending a portion of the packing body 100 along its axial direction in a direction away from the packing body 100. The first protrusion 300 is formed as an extension of the packing body 100 and does not affect the fluidity of the water flow in the packing body 100. Specifically, the first protrusion 300 is generally formed by extending a portion of the side wall of a through hole 110 along its axial direction. In addition, it should be explained that in Figures 1 to 3 In order to distinguish the specific setting position of the first protrusion 300, the first protrusion 300 and the filler body 100 are separated by a solid line. However, in actual production, the first protrusion 300 and the filler body 100 are an integrally formed structure.
[0028] Generally, there are two first protrusions 300, which are respectively located at two axial end surfaces of the packing body 100. When the packing is in use, the two axial end surfaces of the packing body 100 are not likely to overlap with other packing bodies 100. In addition, the two axial end surfaces of the packing body 100 are both provided with first protrusions 300, and the overall structure of the packing is symmetrically arranged to maintain the stability of the center of gravity of the packing.
[0029] In some embodiments of the present application, the filler further includes a second protrusion 400, referring to Figures 1 to 6 As shown, the second protrusion 400 is fixed to the axial end face of the filler body 100, and is located on the same axial end face of the filler body 100 as the first protrusion 300, and the second protrusion 400 is located outside the first protrusion 300. The second protrusion 400 is used in conjunction with the first protrusion 300, and the second protrusion 400 can only be provided when the first protrusion 300 is provided on the axial end face of the filler body 100. The second protrusion 400 is located outside the first protrusion 300, destroying the flatness of the axial end face of the filler body 100 located outside the first protrusion 300, making it more difficult to overlap two fillers when feeding, and further avoiding the overlap of fillers.
[0030] In some preferred embodiments, in the axial direction of the filler body 100, the height of the first protrusion 300 is greater than the height of the second protrusion 400. There is a difference between the height of the first protrusion 300 and the height of the second protrusion 400, and the height of the first protrusion 300 is higher. When the upper and lower fillers overlap, it is more difficult for the fillers to contact stably. Specifically, due to the height difference between the first protrusion 300 and the second protrusion 400, when the upper and lower fillers contact, in order to stabilize the contact, the two fillers will tilt, thereby increasing the contact point and contact area between the two. However, after the filler is tilted, it is easier to separate the upper and lower overlapping fillers under the action of the water flow, so that the overlap between the fillers can be further avoided.
[0031] There are multiple second protrusions 400, which are evenly distributed around the first protrusion 300. The second protrusions 400 divide the axial end surface of the filler body 100, reduce the area of each area, thereby reducing the maximum contact surface that can be had when two adjacent fillers overlap, and reducing the overlapping stability between the two fillers.
[0032] Further preferably, the second protrusion 400 is arranged to extend radially along the filler body 100. The closer to the first protrusion 300, the smaller the gap between two adjacent second protrusions 400. In the case where the upper and lower fillers overlap, Figure 6 As shown, the axial end faces of the two fillers without the first protrusion 300 and the second protrusion 400 gradually contact each other, and the gradually narrowing gap between the two adjacent second protrusions 400 can also prevent the increase of the contact area between the two fillers. The second protrusion 400 limits the position of the other filler, thereby reducing the possibility of filler stacking. The contact area between the upper and lower fillers is small, the overlap between the two is small, and the distance between the centers of gravity of the two is far, so the two are easier to separate under the action of water flow.
[0033] Due to the size limitation of the through hole 110 of the filler body 100, the number of the second protrusions 400 should not be too large. At the same time, in order to ensure that the second protrusions 400 can play a limiting role, the number of the second protrusions 400 should not be too small. In some preferred embodiments, the number of the second protrusions 400 is generally between six and eight.
[0034] Similar to the first protrusion 300, the second protrusion 400 is also formed by extending a portion of the filler body 100 along its axial direction in a direction away from the filler body 100. Figure 1 and Figure 3As shown, in order to more conveniently show the second protrusion 400, a dotted line is used to separate the second protrusion 400 and the filler body 100. In actual production, the second protrusion 400 and the filler body 100 are integrally formed. The second protrusion 400 is actually formed by extending the side wall of a portion of the through hole 110 along its axial direction, which can maintain the fluidity of the fluid in the filler without a significant change.
[0035] In the case where both ends of the packing body 100 are provided with the first protrusions 300, in some embodiments of the present application, both axial end surfaces of the packing body 100 are provided with second protrusions 400. Both end surfaces of the packing body 100 are not easy to overlap with other packing bodies 100.
[0036] In some embodiments of the present application, the packing body 100 can be regarded as being formed by connecting a plurality of plates, and the specific connection method can be an integral connection. Specifically, the packing body 100 includes a first annular plate 120, a plurality of second annular plates 130 and a plurality of connecting plates 140. Figures 1 to 3 As shown, the plurality of second annular plates 130 are sleeved outside the first annular plate 120, and the first annular plate 120 and the plurality of second annular plates 130 are coaxially arranged. The plurality of second annular plates 130 have different radial dimensions and are sleeved outside the first annular plate 120 in sequence. The connecting plate 140 plays a connecting role. A connecting plate 140 is connected between any two adjacent second annular plates 130, and the connecting plate 140 fixes the positions of the two adjacent second annular plates 130. A connecting plate 140 is also connected between the first annular plate 120 and the two adjacent second annular plates 130, and the connecting plate 140 fixes the positions of the first annular plate 120 and the second annular plates 130. The first annular plate 120 can enclose a through hole 110, and the first annular plate 120, the second annular plate 130 and the connecting plate 140 can enclose a part of the through hole 110, and the two adjacent second annular plates 130 can enclose a through hole 110.
[0037] The second annular plate 130 adjacent to the first annular plate 120 is sleeved outside the first annular plate 120, and the connecting plate 140 divides the space between the first annular plate 120 and the second annular plate 130, and forms a through hole 110. Generally, there are multiple connecting plates 140 between the two annular plates, preferably greater than or equal to six, to divide the annular cavity between the two annular plates. The annular cavity formed between two adjacent second annular plates 130 is also divided by the connecting plate 140.
[0038] The first annular plate 120, the second annular plate 130 and the connecting plate 140 can fix the extension plate 200. The extension plate 200 is generally mainly located in the larger through hole 110. In addition, the distribution of the extension plate 200 in the through hole 110 is more balanced, which is more conducive to the attachment of bacteria.
[0039] The first protrusion 300 is generally formed by extending the first annular plate 120 or the second annular plate 130 along the axial direction thereof, and the second protrusion 400 is generally formed by extending the connecting plate 140 along the axial direction of the packing body 100 .
[0040] Compared with the filler in the prior art, the size of the first annular plate 120 is larger than the innermost annular cavity of the prior filler. Under such a layout, the size of the second annular plate 130 can be increased accordingly, thereby increasing the radial size of the first protrusion 300. The annular cavity corresponding to the first annular plate 120 is larger in size, and the cavity can be separated by the extension plate 200 to provide sufficient attachment area for the bacterial colony.
[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A filler that facilitates the attachment of anaerobic ammonium-oxidizing bacteria, characterized in that: include: A packing body (100), the packing body (100) having a plurality of through holes (110), the through holes (110) being arranged through two axial ends of the packing body (100); a plurality of extension plates (200), the extension plates (200) being installed in the through hole (110) and fixed to the inner wall of the through hole (110), at least partially in the through hole (110), including the extension plates (200) extending in the radial direction of the filler body (100) and the extension plates (200) extending in the circumferential direction of the filler body (100); The inner wall of the through hole (110) and the surface of the extension plate (200) are both used for bacterial colonies to attach.
2. A filler that facilitates the attachment of anaerobic ammonium oxidizing bacteria according to claim 1, characterized in that: The filler further comprises a first protrusion (300), the first protrusion (300) is an annular structure, and the first protrusion (300) is fixed to the axial end surface of the filler body (100).
3. A filler that facilitates the attachment of anaerobic ammonia-oxidizing bacteria according to claim 2, characterized in that: The first protrusion (300) is coaxially arranged with the filler body (100), and the diameter of the first protrusion (300) is greater than or equal to half the diameter of the filler body (100).
4. A filler that facilitates the attachment of anaerobic ammonia-oxidizing bacteria according to claim 2, characterized in that: The first protrusion (300) is formed by extending a portion of the filler body (100) along its axial direction in a direction away from the filler body (100); And / or, there are two first protrusions (300), and the two first protrusions (300) are respectively located on two axial end surfaces of the filler body (100).
5. A filler that facilitates the attachment of anaerobic ammonia-oxidizing bacteria according to claim 2, characterized in that: The filler further comprises a second protrusion (400), the second protrusion (400) being fixed to the axial end surface of the filler body (100) and being located on the same axial end surface of the filler body (100) as the first protrusion (300), and the second protrusion (400) being located outside the first protrusion (300).
6. A filler that facilitates the attachment of anaerobic ammonia-oxidizing bacteria according to claim 5, characterized in that: In the axial direction of the filler body (100), the height of the first protrusion (300) is greater than the height of the second protrusion (400).
7. A filler that facilitates the attachment of anaerobic ammonia-oxidizing bacteria according to claim 5, characterized in that: There are a plurality of the second protrusions (400), and the plurality of the second protrusions (400) are evenly distributed around the first protrusion (300).
8. The filler that facilitates the attachment of anaerobic ammonia-oxidizing bacteria according to claim 5, characterized in that: The second protrusion (400) is arranged to extend radially of the filler body (100).
9. A filler that facilitates the attachment of anaerobic ammonia-oxidizing bacteria according to claim 5, characterized in that: The second protrusion (400) is formed by extending a portion of the filler body (100) along its axial direction in a direction away from the filler body (100); And / or, both axial end surfaces of the filler body (100) are provided with the second protrusion (400).
10. The filler that facilitates the attachment of anaerobic ammonia-oxidizing bacteria according to claim 1, characterized in that: The packing body (100) comprises a first annular plate (120), a plurality of second annular plates (130) and a plurality of connecting plates (140); the plurality of second annular plates (130) are sleeved outside the first annular plate (120); the first annular plate (120) and the plurality of second annular plates (130) are coaxially arranged; any two adjacent second annular plates (130) are connected to the connecting plate (140); and the first annular plate (120) and the second annular plate (130) adjacent thereto are connected to the connecting plate (140); The first annular plate (120) encloses the through hole (110), the first annular plate (120) and the second annular plate (130) and the connecting plate (140) can enclose part of the through hole (110), and two adjacent second annular plates (130) and the connecting plate (140) can enclose part of the through hole (110).