Spherical MBBR filler

Abstract

The utility model provides spherical MBBR (Moving Bed Biofilm Reactor) filler, a lower shell comprises a spindle-shaped hollow placing cavity, the bottom end of the placing cavity is closed, the top end of the placing cavity is open, and the top end of the placing cavity is connected with a connecting ring A; arc-shaped fins A are arranged on the outer side face of the containing cavity, the top faces of the fins A are connected with the bottom face of the connecting ring A, and the bottom ends of the fins A are connected with the bottom face of the containing cavity; the sealing cover of the upper shell is connected with the inner side surface of the connecting ring B; the bottom surfaces of the fins B on the sealing cover are planes; the bottom surface of the fin B is connected with the sealing cover and the top surface of the connecting ring B; when the upper shell body and the lower shell body are connected into a whole, the sealing cover seals the top end of the containing cavity, and the outer edges of the arc-shaped fins B and the outer edges of the arc-shaped fins A form discontinuous arcs. Small activated carbon balls are arranged in the placement cavity, and the particle size of the small activated carbon balls is 5-8 mm. The spherical MBBR filler is suitable for microbial growth and biofilm formation, and has a good fluidization effect and a stable structure in sewage treatment.

Description

Technical Field

[0001] The utility model relates to the technical field of microbial sewage treatment, in particular to a spherical MBBR filler. Background Art

[0002] The core part of the moving-bed biofilm reactor (MBBR) is that suspended fillers with a specific gravity close to that of water are directly added into the aeration tank as active carriers of microorganisms. The MBBR is in a fluidized state due to the aeration and water flow in the aeration tank. When microorganisms attach to the carriers, the floating carriers move freely in the reactor with the swirling and turning action of the mixed liquid, thereby achieving the purpose of sewage treatment.

[0003] Traditional MBBR packing is typically flat, square, or columnar, resulting in a small specific surface area, poor microbial adhesion, and slow biofilm formation. These issues lead to lengthy wastewater treatment processes and poor results. Spherical MBBR packing also exists on the market, consisting of two hemispheres with a sponge filling in the middle. However, this type of spherical packing is prone to disintegration during operation.

[0004] It can be seen that providing an MBBR filler with a large specific surface area, conducive to microbial biofilm formation and stable structure is of great significance to the industry. Summary of the Invention

[0005] In light of this, the present invention provides a spherical MBBR packing, specifically a spherical MBBR packing having a spindle-shaped placement cavity, a small ball disposed within the cavity, and arc-shaped fins A disposed on the exterior of the cavity. This spherical MBBR packing has the advantages of a rational design, strong practicality, and high surface roughness. It is suitable for microbial biofilm growth and exhibits good fluidization and structural stability in wastewater treatment.

[0006] Based on the existing technology, the utility model provides a spherical MBBR filler, comprising a lower shell and an upper shell. A connecting ring A is provided at the top end of the lower shell, and a connecting ring B is provided at the bottom end of the upper shell. The connecting rings A and B are hinged on one side and snap-connected on the other side. This arrangement can improve the stability of the MBBR filler structure and ensure smooth sewage treatment.

[0007] The lower shell includes a spindle-shaped hollow placement cavity, the bottom end of the placement cavity is closed and the top end is open, and the top end of the placement cavity is connected to the bottom surface of the connecting ring A;

[0008] An arc-shaped fin A is provided on the outer surface of the placement cavity. The top surface of the fin A is flat and connected to the bottom surface of the connecting ring A. The bottom end of the fin A is connected to the bottom surface of the placement cavity.

[0009] The upper shell includes a cover connected to the inner side of the connecting ring B; a connecting column is provided on the upper side of the cover; an arc-shaped fin B is provided on the cover, and the bottom surface of the fin B is flat; the bottom surface of the fin B is connected to the cover and the top surface of the connecting ring B, and the side surface is connected to the outer side surface of the column;

[0010] When the upper shell and the lower shell are connected as a whole, the cover closes the top of the placement cavity, the position of the arc fin B corresponds to the position of the arc fin A, and the outer edges of the arc fin B and the arc fin A form a discontinuous arc; after the outer edges of all the arc fins B and the arc fin A are connected, a spherical shape is formed;

[0011] Activated carbon balls are placed in the placement chamber, and the particle size of the activated carbon balls is 5-8mm;

[0012] The setting of activated carbon balls can absorb organic matter that is difficult to biodegrade, remove the odor of sewage, and improve the biodegradability and volume load of sewage;

[0013] The spindle-shaped placement cavity provides a relatively large space for the balls, allowing the balls to turn and move smoothly with the action of aeration and water flow, alleviating the current problem of ball clogging affecting the microbial attachment effect, and increasing the specific surface area, which is more conducive to microbial attachment.

[0014] Preferably, the placement cavity includes annular rings of different diameters, and all the annular rings are connected into a spindle-shaped structure by dividing strips; there are six annular rings and nine dividing strips; the maximum diameter of the placement cavity is 10 mm and the minimum diameter is 8 mm, which facilitates water circulation.

[0015] Preferably, the diameter of the spherical MBBR filler is 25-35 mm; the spherical MBBR filler is an integrally molded injection molded part with better wear resistance and impact resistance.

[0016] Preferably, the surfaces of the arcuate fins A and B are both rough or serrated, which increases the specific surface area and is more conducive to the attachment and biofilm formation of microorganisms; fan-shaped channels are formed between adjacent arcuate fins A. When the MBBR filler is used in sewage, the presence of the fan-shaped channels can make the sewage flow more uniform, avoiding the situation where the local water flow is too fast or too slow, thereby improving the mass transfer efficiency.

[0017] Preferably, a horizontal partition is provided between adjacent arc-shaped fins A, and the two sides of the partition are respectively connected to the two adjacent arc-shaped fins A; an annular fixing ring is provided on the outer side of the arc-shaped fin A; through the partition and the fixing ring, the arc-shaped fin A can be made more stable on the outer surface of the placement cavity.

[0018] Preferably, there are twelve arc-shaped fins A.

[0019] Compared with the prior art, the beneficial effect of the present invention is that, by arranging the arc-shaped fins A, arc-shaped fins B and the spindle-shaped placement cavity, sufficient growth space can be provided for microorganisms, and small balls are placed in the placement cavity to increase the volume load, thereby avoiding problems such as blockage in sewage treatment, improving sewage treatment efficiency, and reducing treatment time; the effective specific surface area of ​​the spherical MBBR filler of the present application is greater than 1100m 2 / m 3 The porosity is greater than 89%, and the density is 0.97-1.03, which is close to the density of water, ensuring that the filler can be suspended in the water, which can effectively improve the sewage treatment effect; the filler is an overall spherical design with a density close to water; its surface roughness is large, which is suitable for microbial growth and biofilm; the fluidization effect is good, and disintegration can be prevented. 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 following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 Schematic diagram of the structure of spherical MBBR packing when it is opened.

[0022] Figure 2 This is an enlarged view of the M section.

[0023] Figure 3 Schematic diagram of the structure of spherical MBBR packing when it is closed.

[0024] In the figure, 1-lower shell, 101-placing cavity, 1011-annular ring, 1012-dividing bar, 102-fin A, 2-upper shell, 201-cover, 202-connecting column, 203-fin B, 3-connecting ring A, 4-connecting ring B, 5-clip, 6-clamp, 7-partition, 8-fixing ring, 9-activated carbon ball. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0026] Combine Figure 1-Figure 3The utility model provides a spherical MBBR filler, including a lower shell 1 and an upper shell 2. A connecting ring A3 is provided at the top end of the lower shell 1, and a connecting ring B4 is provided at the bottom end of the upper shell 2. The connecting ring A3 and the connecting ring B4 are hinged on one side and connected by a buckle 5 on the other side. In this embodiment, the connecting ring A3 is provided with a buckle 5, and the connecting ring B4 is provided with a clamping member 6, which is used in conjunction with the buckle 5. This arrangement can improve the stability of the MBBR filler structure and ensure the smooth progress of the sewage treatment process.

[0027] The lower housing 1 includes a spindle-shaped hollow placement cavity 101, the bottom end of the placement cavity 101 is closed and the top end is open, and the top end of the placement cavity 101 is connected to the bottom surface of the connecting ring A3;

[0028] The placement chamber 101 includes annular rings 1011 of different diameters, all of which are connected by separators 1012 to form a spindle-shaped structure. There are six annular rings 1011 and nine separators 1012. The maximum diameter of the placement chamber 101 is 10 mm, and the minimum diameter is 8 mm, which facilitates water circulation.

[0029] An arc-shaped fin A102 is provided on the outer surface of the placement cavity 101. The top surface of the fin A102 is flat and connected to the bottom surface of the connecting ring A3. The bottom end of the fin A102 of the fin B203 placement cavity 101 is connected to the bottom surface of the placement cavity 101.

[0030] The upper housing 2 includes a cover 201 connected to the inner side of the connecting ring B4; a connecting column 202 is provided on the upper surface of the cover 201; an arc-shaped fin B203 is provided on the cover 201, and the bottom surface of the fin B203 is flat; the bottom surface of the fin B203 is connected to the cover 201 and the top surface of the connecting ring B4, and the side surface is connected to the outer side surface of the column;

[0031] When the upper shell 2 and the lower shell 1 are connected as a whole, the cover 201 closes the top of the placement cavity 101, the position of the arc fin B203 corresponds to the position of the arc fin A102, and the outer edges of the arc fin B203 and the arc fin A102 form a discontinuous arc; all the arc fins B203 and the outer edges of the arc fin A102 are connected to form a spherical shape;

[0032] There are twelve curved fins A102;

[0033] Activated carbon balls 9 are placed in the placement chamber 101. The particle size of the activated carbon balls 9 is 5-8 mm. In this embodiment, the activated carbon balls 9 are 5 mm.

[0034] The surfaces of the curved fins A102 and B203 are both rough or serrated, which increases the specific surface area and is more conducive to the attachment and biofilm formation of microorganisms. Fan-shaped channels are formed between adjacent curved fins A102. When the MBBR filler is used in sewage, the presence of fan-shaped channels can make the sewage flow more uniform, avoid the situation where the local water flow is too fast or too slow, and thus improve the mass transfer efficiency.

[0035] A horizontal partition 7 is provided between adjacent arc-shaped fins A102, and both sides of the partition 7 are connected to two adjacent arc-shaped fins A102 respectively; an annular fixing ring 8 is provided on the outer side of the arc-shaped fin A102; the partition 7 and the fixing ring 8 can make the arc-shaped fin A102 more stable on the outer surface of the placement cavity 101;

[0036] The diameter of the spherical MBBR filler is 25-35 mm; in this embodiment, the diameter of the spherical MBBR filler is 30 mm;

[0037] Spherical MBBR filler is an integral injection molded part with better wear resistance and impact resistance;

[0038] The setting of the activated carbon balls 9 can adsorb organic matter that is difficult to biodegrade, remove the odor of sewage, and improve the biodegradability and volume load of sewage;

[0039] The spindle-shaped arrangement of the placement chamber 101 provides a relatively large space for the balls, allowing the balls to turn and move smoothly with the action of aeration and water flow, alleviating the current problem of ball clogging affecting the microbial attachment effect, and increasing the specific surface area, which is more conducive to microbial attachment.

[0040] The above is a detailed introduction to the present invention. The "up", "down", "left" and "right" in this embodiment are described relative to the positions in the drawings of the specification. Although the present invention has been described in detail with reference to the drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, ordinary technicians in this field can make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions should be within the scope of the present invention / any technician familiar with this technical field can easily think of changes or substitutions within the technical scope disclosed in the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A spherical MBBR filler, characterized in that: comprising an upper shell and a lower shell that are detachably connected; The lower shell includes a spindle-shaped hollow placement cavity, the bottom end of the placement cavity is closed and the top end is open, and the top end of the placement cavity is connected to the bottom surface of the connecting ring A; An arc-shaped fin A is provided on the outer surface of the placement cavity. The top surface of the fin A is flat and connected to the bottom surface of the connecting ring A. The bottom end of the fin A is connected to the bottom surface of the placement cavity. The upper shell includes a cover connected to the inner side of the connecting ring B; a connecting column is provided on the upper side of the cover; an arc-shaped fin B is provided on the cover, and the bottom surface of the fin B is flat; the bottom surface of the fin B is connected to the cover and the top surface of the connecting ring B, and the side surface is connected to the outer side surface of the column; When the upper shell and the lower shell are connected as a whole, the cover closes the top of the placement cavity, the position of the arc-shaped fin B corresponds to the position of the arc-shaped fin A, and the outer edges of the arc-shaped fin B and the arc-shaped fin A form a discontinuous arc; Activated carbon balls are arranged in the placement cavity, and the particle size of the activated carbon balls is 5-8 mm.

2. The spherical MBBR filler according to claim 1, characterized in that A connecting ring A is provided at the top end of the lower shell, and a connecting ring B is provided at the bottom end of the upper shell. One side of the connecting ring A and the connecting ring B is hinged, and the other side is snap-connected.

3. The spherical MBBR filler according to claim 1, characterized in that The placement cavity includes annular rings of different diameters, and all the annular rings are connected to form a spindle-shaped structure through separators; there are six annular rings and nine separators; the maximum diameter of the placement cavity is 10 mm, and the minimum diameter is 8 mm.

4. The spherical MBBR filler according to claim 1, characterized in that The diameter of the spherical MBBR filler is 25-35 mm; the spherical MBBR filler is an integrally formed injection molded part.

5. The spherical MBBR filler according to claim 1, characterized in that The surfaces of the arc-shaped fins A and B both have rough structures or serrated structures.

6. The spherical MBBR filler according to claim 5, characterized in that A horizontal partition is provided between adjacent arc-shaped fins A, and two sides of the partition are respectively connected to two adjacent arc-shaped fins A; an annular fixing ring is provided on the outer side of the arc-shaped fin A.

7. The spherical MBBR filler according to claim 1, characterized in that There are twelve arc-shaped fins A.

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