Nitrification enhanced suspended filler with high specific surface area

Abstract

The utility model relates to a high-specific-surface-area nitrification-enhanced suspended filler which comprises an outer wall and a first partition plate, and the outer wall is of a cylindrical structure; a plurality of first partition plates are arranged on the inner side of the outer wall; the first partition plate is of a rectangular sheet structure; the plurality of first partition plates are fixedly connected to form a polygonal hole; the axial direction of the polygonal hole is parallel to that of the outer wall; the first partition plate is fixedly connected with the inner side of the outer wall to form an annular hole; the axial direction of the annular hole is parallel to the axial direction of the outer wall. According to the utility model, the specific surface area of the filler is increased; the hydrophilicity of the filler is improved; the biofilm culturing number of microorganisms is increased; the abundance of the functional microbial flora is improved; the denitrification performance of the MBBR system is improved; the structural strength of the filler is improved, and the risk that the cylindrical filler is deformed and damaged due to external force is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a nitrification-enhanced suspended filler with a high specific surface area. Background Art

[0002] Among the many sewage treatment processes, MBBR, as an economical and efficient sewage treatment technology, is widely used in sewage treatment, especially in the upgrading and transformation of sewage treatment plants. Filler is the core component of MBBR, and the filler material will have a significant impact on the sewage treatment effect of MBBR. Most traditional fillers are made of polyethylene, which has good strength but has problems such as poor surface hydrophilicity and poor bioaffinity, resulting in long biofilm formation time and substandard effluent water quality. Although there have been some studies on the modification of suspended biological carriers, these studies mostly improve the carrier bioaffinity and microbial activity through hydrophilic modification, electrophilic modification, magnetic modification, etc., lack functional design for different water quality characteristics, which restricts the further improvement of the system treatment performance.

[0003] The defects of the prior art are:

[0004] 1. Since most traditional fillers are made of polyethylene, they have good strength but poor surface hydrophilicity and poor biological affinity, which leads to problems such as long film formation time and substandard water quality.

[0005] 2. Since existing technologies mostly improve the carrier bioaffinity and microbial activity through hydrophilic modification, electrophilic modification, magnetic modification, etc., there is a lack of functional design targeting different water quality characteristics, which restricts the further improvement of the system treatment performance. Summary of the Invention

[0006] In response to the above problems, the utility model provides a high specific surface area nitrification enhanced suspended filler, the purpose of which is to increase the specific surface area of the filler; improve the hydrophilicity of the filler; increase the number of microbial biofilms; increase the abundance of functional microbial flora; improve the denitrification performance of the MBBR system; increase the structural strength of the filler, and reduce the risk of deformation and damage of the cylindrical filler due to external forces.

[0007] In order to solve the above problems, the technical solution provided by the present invention is as follows:

[0008] A high specific surface area nitrification-enhanced suspended filler comprises an outer wall and a first partition plate, wherein: the outer wall is a cylindrical structure; a plurality of the first partition plates are provided on the inner side of the outer wall; the first partition plates are a rectangular sheet structure; the plurality of the first partition plates are fixedly connected to form a polygonal hole; the axial direction of the polygonal hole is parallel to the axial direction of the outer wall; the first partition plate is fixedly connected to the inner side of the outer wall to form an annular hole; the axial direction of the annular hole is parallel to the axial direction of the outer wall.

[0009] Preferably, the polygonal holes are distributed in a honeycomb shape with the axis of the outer wall as the center; the cross-sectional shape of the polygonal holes is a regular hexagon; and the annular holes are distributed in an annular shape along the inner side of the outer wall.

[0010] Preferably, a second partition plate is provided in the inner diameter direction of the outer wall; the second partition plate is a rectangular sheet structure; one end of the second partition plate is fixedly connected to the midpoint of the first partition plate on the polygonal hole provided at the axis center of the outer wall, and the other end is fixedly connected to the inner side of the outer wall.

[0011] Preferably, the number of the polygonal holes is 51; the number of the annular holes is 54; the number of the second partition plates is 6, and the angle between two adjacent second partition plates is 60°; the second partition plate divides the 24 polygonal holes connected to it into 48 half holes.

[0012] Preferably, a concave-convex structure is provided on the outer side of the outer wall; and an edge of the cross section of the outer wall perpendicular to the radial direction is wavy.

[0013] Preferably, the outer wall has a diameter of 36 mm and a height of 4 mm.

[0014] Preferably, the effective specific surface area of the high specific surface area nitrification enhanced suspension filler is 1200m 2 / m 3 .

[0015] Preferably, the high specific surface area nitration-enhanced suspension filler is made of polyethylene modified for hydrophilicity and electrophilicity.

[0016] Preferably, the high specific surface area nitration-enhanced suspended filler is made of polyethylene that has been nitration-enhanced modified.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. Since the utility model can effectively increase the specific surface area of the filler, and at the same time, through the modification of the hydrophilicity and electrophilicity of the filler, the number of microbial biofilms is effectively increased.

[0019] 2. Since the utility model effectively promotes the enrichment of functional microbial flora on the surface of suspended filler through nitrification enhancement modification of filler, the abundance of functional microbial flora is increased, thereby effectively improving the denitrification performance of MBBR system.

[0020] 3. Since the utility model can effectively increase the structural strength of the filler through the arrangement of the second partition support, the risk of deformation and damage of the cylindrical filler caused by external force is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic front view of a specific embodiment of the utility model;

[0022] Figure 2 It is a side view schematic diagram of a specific embodiment of the utility model.

[0023] Among them: 1. outer wall, 2. first partition plate, 3. polygonal hole, 4. annular hole, 5. second partition plate, 6. half hole, 7. concave-convex structure. DETAILED DESCRIPTION

[0024] The present invention is further illustrated below with reference to specific examples. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, modifications of various equivalent forms of the present invention made by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0025] like Figure 1 and Figure 2 As shown, the high specific surface area nitrification enhanced suspended filler comprises an outer wall 1 and a first partition plate 2, wherein: the outer wall 1 is a cylindrical structure; a plurality of first partition plates 2 are provided on the inner side of the outer wall 1; the first partition plates 2 are rectangular sheet structures; the plurality of first partition plates 2 are fixedly connected to form polygonal holes 3; the axial direction of the polygonal holes 3 is parallel to the axial direction of the outer wall 1; the first partition plate 2 is fixedly connected to the inner side of the outer wall 1 to form an annular hole 4; the axial direction of the annular hole 4 is parallel to the axial direction of the outer wall 1.

[0026] It should be noted that the cylindrical outer wall 1 forms a packing ring, and a concave-convex structure 7 is provided on the outer side of the outer wall 1; the edge of the cross section of the outer wall 1 perpendicular to the radial direction is wavy to prevent the packings from sticking to each other.

[0027] In this specific embodiment, the outer wall 1 has a diameter of 36 mm and a height of 4 mm.

[0028] It should be noted that the polygonal holes 3 are distributed in a honeycomb shape with the axis of the outer wall 1 as the center; the cross-section of the polygonal holes 3 is a regular hexagon; and the annular holes 4 are distributed in an annular shape along the inner side of the outer wall 1 .

[0029] It should be noted that a second partition plate 5 is provided in the inner diameter direction of the outer wall 1; the second partition plate 5 is a rectangular sheet structure; one end of the second partition plate 5 is fixedly connected to the midpoint of the first partition plate 2 on the polygonal hole 3 arranged at the axial center of the outer wall 1, and the other end is fixedly connected to the inner side of the outer wall 1.

[0030] It should be further explained that the provision of the second partition plate 5 support can effectively increase the structural strength of the packing and reduce the risk of deformation and damage of the cylindrical packing due to external forces.

[0031] In this specific embodiment, the number of polygonal holes 3 is 51; the number of annular holes 4 is 54; the number of second partition plates 5 is 6, and the angle between two adjacent second partition plates 5 is 60°; the second partition plate 5 divides the 24 polygonal holes 3 connected to it into 48 half holes 6.

[0032] It should be further explained that the formed through-hole structure effectively increases the specific surface area of the filler.

[0033] In this specific embodiment, the effective specific surface area of the high specific surface area nitrification enhanced suspension filler is 1200m 2 / m 3 .

[0034] It should be noted that the high specific surface area nitration-enhanced suspension filler is made of polyethylene with hydrophilic and electrophilic modifications.

[0035] It should be noted that the high specific surface area nitration-enhanced suspended filler is made of polyethylene that has been nitration-enhanced modified.

[0036] It should be further explained that the high specific surface area nitrification-enhanced suspended filler selected in the present invention is prepared by mixing granular polyethylene, clinoptilolite, talcum powder, iron oxide powder, and polyquaternium-10 in a certain proportion and then extruding through a single-screw extruder. Traditional polyethylene is used as the base material to provide the overall framework raw material for the filler; natural zeolite is a porous hydrous silicate crystal with a tetrahedral skeleton structure that has good adsorption and ion exchange properties for ammonia nitrogen. The addition of natural clinoptilolite enables the carrier to have the ability to adsorb ammonia nitrogen and enrich nitrifying bacteria, thereby functionally modifying the filler; the addition of polyiron oxide and quaternary ammonium-10 improves the hydrophilicity and electrophilicity of the filler. After modification, the contact angle between the surface of the suspended filler and water is reduced from 92.0° to 60.2°, and the surface potential of the filler is increased from -38.6mV to 11.7±1.1mV, greatly increasing the adhesion of microorganisms. The utility model provides a high specific surface area nitrification enhanced suspended filler, which can successfully form biofilms in 8 days. Compared with ordinary suspended fillers, the abundance of nitrifying functional bacteria in the surface biofilm is increased, and the nitrification efficiency can be increased by nearly 15%.

[0037] In the foregoing detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that embodiments of the claimed subject matter require more features than are expressly recited in each claim. On the contrary, as reflected in the appended claims, the invention comprises less than all the features of any individual disclosed embodiment. The appended claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

[0038] The above description of the disclosed embodiments is intended to enable any person skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure is not limited to the embodiments presented herein but is intended to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0039] The foregoing description includes examples of one or more embodiments. Of course, it is not possible to describe all possible combinations of components or methods for the purposes of describing the above embodiments, but one of ordinary skill in the art will recognize that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to encompass all such changes, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent the term "comprising" is used in the specification or claims, the term is intended to be encompassed in a manner similar to the term "including," as explained in terms of "including," used as a transitional word in the claims. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or."

[0040] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high specific surface area nitrification enhanced suspension filler, characterized by: The invention comprises an outer wall (1) and a first partition plate (2), wherein: the outer wall (1) is a cylindrical structure; a plurality of the first partition plates (2) are provided on the inner side of the outer wall (1); the first partition plates (2) are a rectangular sheet structure; the plurality of the first partition plates (2) are fixedly connected to form a polygonal hole (3); the axial direction of the polygonal hole (3) is parallel to the axial direction of the outer wall (1); the first partition plate (2) is fixedly connected to the inner side of the outer wall (1) to form an annular hole (4); the axial direction of the annular hole (4) is parallel to the axial direction of the outer wall (1); the polygonal holes (3) are distributed in a honeycomb shape with the axis of the outer wall (1) as the center; the cross-sectional shape of the polygonal hole (3) is a regular hexagon; the annular hole (4) is a regular hexagon; the polygonal hole (3 ... The holes (4) are distributed in an annular manner along the inner side of the outer wall (1); a second partition plate (5) is provided in the inner diameter direction of the outer wall (1); the second partition plate (5) is a rectangular sheet structure; one end of the second partition plate (5) is fixedly connected to the midpoint of the first partition plate (2) on the polygonal hole (3) provided at the axis of the outer wall (1), and the other end is fixedly connected to the inner side of the outer wall (1); the number of the polygonal holes (3) is 51; the number of the annular holes (4) is 54; the number of the second partition plates (5) is 6, and the angle between two adjacent second partition plates (5) is 60°; the second partition plate (5) divides the 24 polygonal holes (3) connected thereto into 48 half holes (6).

2. The high specific surface area nitrification enhanced suspension filler according to claim 1, characterized in that: The outer side of the outer wall (1) is provided with a concave-convex structure (7); the edge of the cross section of the outer wall (1) perpendicular to the radial direction is wavy.

3. The high specific surface area nitrification enhanced suspension filler according to claim 2, characterized in that: The outer wall (1) has a diameter of 36 mm and a height of 4 mm.

4. The high specific surface area nitrification enhanced suspension filler according to claim 3, characterized in that: The effective specific surface area of the high specific surface area nitrification enhanced suspended filler is 1200m 2 / m 3 .

5. The high specific surface area nitrification enhanced suspension filler according to claim 4, characterized in that: The high specific surface area nitration-enhanced suspension filler is made of polyethylene modified for hydrophilicity and electrophilicity.

6. The high specific surface area nitrification enhanced suspension filler according to claim 5, characterized in that: The high specific surface area nitration-enhanced suspended filler is made of polyethylene that has been subjected to nitration-enhanced modification.

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