CN211310999U

CN211310999U - MBBR (moving bed biofilm reactor) filler for sewage treatment

Info

Publication number: CN211310999U
Application number: CN201922140714.3U
Authority: CN
Inventors: 王江帆; 夏小凯; 王伟; 张燕
Original assignee: Jiangxi Spring & Autumn Environment Co ltd
Current assignee: Jiangxi Spring & Autumn Environment Co ltd
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-08-21
Anticipated expiration: 2029-12-03

Abstract

The utility model provides a filler for MBBR sewage treatment with novel structural design; the filler body is of a centrosymmetric polyhedral structure, the middle of the filler body is a sphere, two sides of the filler body are respectively composed of six bottomless hexagonal pyramids, the open bottom surface of each hexagonal pyramid is covered by a three-dimensional net structure formed by mutually winding a plurality of spiral wire-shaped materials in a staggered manner, gaps among the spiral wire-shaped materials form gaps through which water can pass, a cavity formed by covering each hexagonal pyramid and the spiral wire-shaped materials is filled with a plurality of microorganism carriers, and the size of the microorganism carriers is larger than that of the gaps among the spiral wire-shaped materials; the whole anoxic microorganism carrier is completely filled in the middle sphere of the filler body; magnetic particles are fixed in the center of the anoxic microorganism carrier filler; a plurality of elastic strands are attached to the outer part of the middle sphere of the filler body, and the bottomless hexagonal cones at the two sides are communicated with the middle sphere.

Description

MBBR (moving bed biofilm reactor) filler for sewage treatment

Technical Field

The utility model relates to a sewage treatment technical field especially relates to a MBBR is filler for sewage treatment.

Background

Moving Bed Biofilm Reactors (MBBR) are another new type of biofilm reactor which has received considerable attention from researchers in recent years, and are an improved new type of composite biofilm reactor which is developed on the basis of fixed bed reactors, fluidized bed reactors and biofilters. The method overcomes the defects that a fixed bed reactor needs regular back flushing, a fluidized bed reactor needs carrier fluidization, and a submerged biological filter is blocked and needs to be cleaned and an aerator needs to be replaced, and also keeps the characteristics of impact load resistance, low sludge yield and long sludge age of the traditional biofilm method. Compared with the activated sludge method, the method has longer sludge age, can keep more nitrifying bacteria and has better denitrification effect. The main principle is that after sewage continuously flows through a reactor filler carrier, a biological film is formed on the carrier, and microorganisms propagate and grow on the biological film in a large quantity and degrade organic pollutants in the sewage, so that the sewage is purified.

The MBBR technique mainly relies on the development of novel filler, but original filler can't form the environment good oxygen in same cell body, facultative anaerobic, oxygen deficiency, can only divide two to three cell body when the denitrogenation, nitrify the denitrification denitrogenation, consequently, the utility model provides a novel filler of structural design realizes that outer good oxygen nitrobacteria is dominant, mainly carries out nitration reaction, and the inlayer is that heterotypic denitrifying bacteria is dominant, mainly carries out denitrification, makes the denitrification of nitrifying go on in same MBBR reactor, has the saving oxygen supply volume, saves the carbon source, reduces the reactor volume, saves the capital construction investment, reduces the advantage of producing mud.

Disclosure of Invention

The utility model aims to overcome the not enough of prior art, adapt to reality needs, provide a novel MBBR sewage treatment of structural design and use filler.

In order to realize the utility model discloses a purpose, the utility model discloses the technical scheme who adopts does:

designing a filler for MBBR sewage treatment, wherein a filler body is of a centrosymmetric polyhedral structure, the middle of the filler body is a sphere, two sides of the filler body are respectively composed of six bottomless hexagonal pyramids, the open bottom surface of each hexagonal pyramid is covered by a three-dimensional reticular structure formed by mutually winding a plurality of spiral filamentary materials in a staggered manner, gaps among the spiral filamentary materials form gaps through which water can pass, a cavity formed by covering each hexagonal pyramid and the spiral filamentary materials is filled with a plurality of microorganism carriers, and the size of the microorganism carriers is larger than the gaps among the spiral filamentary materials; the whole anoxic microorganism carrier is completely filled in the middle sphere of the filler body; magnetic particles are fixed in the center of the anoxic microorganism carrier; a plurality of elastic strands are attached to the outer part of the middle sphere of the filler body, and the bottomless hexagonal cones at the two sides are communicated with the middle sphere.

The two sides of the body are respectively composed of six bottomless hexagonal pyramids, and the bottom surfaces of the hexagonal pyramids are regular hexagons.

The spiral thread material is one or more of polypropylene, polyethylene, polyvinyl chloride and ABS resin.

The outer surface of the spiral thread-like material is subjected to a roughening treatment.

The size range of the microbial carrier filler is 5mm-10 mm.

2-6 microorganism carriers are arranged in a single combined body.

The microbial carrier and the anoxic microbial carrier are one or more of hydrophilic plastics, light-hardening polyurethane resin, polyester fiber balls, polyurethane sponge fillers and the like.

The microbial carrier is of a solid or hollow structure.

The elastic thread line on the outer surface of the middle sphere is made of a mixed copolymer of corrosion-resistant, high-temperature-resistant and aging-resistant polyolefins and polyamide and auxiliary agents such as hydrophilic, adsorption and heat-resistant oxygen, has certain flexibility and rigidity, and is arranged in a three-dimensional uniform arrangement mode.

The magnetic particles have a particle size of 3 to 5 mm.

The beneficial effects of the utility model reside in that:

the filler integrates the advantages of various fillers, makes up the defects of the fillers, plays the advantages of the fillers, integrates the functions of various fillers such as hydrophilic plastics, magnetic fillers, elastic strands and the like, and has the characteristics of long service life, good oxygenation effect, quick film hanging, easy film stripping and updating, high-load impact resistance and no knotting. Meanwhile, due to the special structure, aerobic, facultative and anoxic reactions can be fused into one filler, the magnetism promotes the growth and metabolism of microorganisms, the biochemical reaction is strengthened, the degradation rate of organic pollutants is greatly increased, the number of sewage treatment equipment, the occupied area, the operating cost and the like are reduced, and for high-ammonia nitrogen low-COD wastewater, the power cost and the cost of a supplemented carbon source can be saved.

Drawings

Fig. 1 is a schematic view of the main structure of the present invention in a cross-sectional state;

fig. 2 is a schematic view of the main structure of the present invention.

Reference numbers in the figures: 1. a plurality of spiral thread materials are mutually staggered and wound into a three-dimensional net structure, 2, a microorganism carrier, 3, a bottomless hexagonal cone, 4, an anoxic microorganism carrier, 5, magnetic particles, 6, elastic thread strips, 7 and a middle sphere.

Detailed Description

The invention will be further described with reference to the following figures and examples:

example 1: a filler for MBBR sewage treatment, which is shown in figure 1 and figure 2;

comprises a body; the body comprises middle spheroid 7, six bottomless hexagonal pyramids 3 of both sides constitute centrosymmetric polyhedral structure, and the open bottom surface of every hexagonal pyramid 3 is covered by many spiral filamentous material crisscross winding into three-dimensional network structure 1 each other, and the clearance between many spiral filamentous material constitutes the space that can supply water to pass through, and every hexagonal pyramid covers the cavity that forms with many spiral filamentous material and is filled with a plurality of microorganism carrier 2, and microorganism carrier 2 size is greater than the clearance between many spiral filamentous material.

In this design, many spiral filiform materials are crisscross the winding each other, form the orderly three-dimensional network structure of density, and the space part constitutes the passageway in the middle of the net, and sewage can freely pass through, but can intercept inside microbial packing, and is further, in this design, spiral filiform material is for one or more in polypropylene, polyethylene, polyvinyl chloride, the ABS resin, simultaneously, the surface of spiral filiform material is through rough treatment, and the advantage of this design is: the aeration device has the advantages of large specific surface area, large porosity, easy attachment of microorganisms, large carrying capacity, three-dimensional flow during water flow, good mass transfer condition, high oxygen utilization rate, no blockage, no agglomeration, stable physical and chemical properties, no deformation after long-term use and suitability for various aeration methods.

Further, the whole anoxic microorganism carriers 4 are completely filled in the middle sphere 7 of the filler body; magnetic particles 5 are fixed in the center of the anoxic microorganism carrier 4; a plurality of elastic strands 6 are attached to the outer part of the middle sphere of the filler body, and bottomless hexagonal pyramids 3 on two sides are connected with the middle sphere 7.

Furthermore, in the design, the bottom surface of each bottomless hexagonal pyramid is a regular hexagon.

Furthermore, in the design, the size range of the microbial carrier filler is 5mm-10mm, 2-6 microbial carrier fillers are arranged in a single assembly, the microbial carrier fillers are one or more of hydrophilic plastics, light-cured polyurethane resin, polyester fiber balls, polyurethane sponge fillers and the like, and the microbial carrier fillers are in a solid or hollow structure.

Furthermore, the anoxic microorganism carrier filler is one or more of hydrophilic plastics, light-cured polyurethane resin, polyester fiber balls and polyurethane sponge filler, is wholly and completely filled in the central spherical part of the filler and is used for loading anoxic microorganisms, and the pores are large. The design has the advantages of large specific surface area, large porosity, easy attachment of microorganisms, large loading capacity, high film forming speed, strong load impact resistance and low sludge yield.

Further, the magnetic particles have a particle size of 3 to 5mm, and are wrapped with the anoxic microorganism carrier filler and fixed in the middle. The advantages are that: the magnetism promotes the growth and metabolism of microorganisms, strengthens biochemical reaction and greatly increases the degradation rate of organic pollutants.

In conclusion, the filler integrates the advantages of various fillers, makes up the defects of the fillers, plays the advantages of the fillers, integrates the functions of various fillers such as hydrophilic plastics, magnetic fillers, elastic threads and the like, and has the characteristics of long service life, good oxygenation effect, quick film hanging, easy film stripping and updating, high-load impact resistance and no knotting. Meanwhile, due to the special structure, aerobic, facultative and anoxic reactions can be fused into one filler, the magnetism promotes the growth and metabolism of microorganisms, the biochemical reaction is strengthened, the degradation rate of organic pollutants is greatly increased, the number of sewage treatment equipment, the occupied area, the operating cost and the like are reduced, and for high-ammonia nitrogen low-COD wastewater, the power cost and the cost of a supplemented carbon source can be saved.

The embodiment of the present invention discloses a preferred embodiment, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention according to the above embodiment, and make different extensions and changes, but do not depart from the spirit of the present invention, all of which are within the protection scope of the present invention.

Claims

1. A filler for MBBR sewage treatment is characterized in that a filler body is of a centrosymmetric polyhedral structure, the middle of the filler body is a sphere, two sides of the filler body are respectively composed of six bottomless hexagonal pyramids, the open bottom surface of each hexagonal pyramid is covered by a three-dimensional reticular structure formed by mutually winding a plurality of spiral filamentary materials in a staggered manner, gaps among the spiral filamentary materials form gaps through which water can pass, a cavity formed by covering each hexagonal pyramid and the spiral filamentary materials is filled with a plurality of microorganism carriers, and the size of the microorganism carriers is larger than the gaps among the spiral filamentary materials; the whole anoxic microorganism carrier is completely filled in the middle sphere of the filler body; magnetic particles are fixed in the center of the anoxic microorganism carrier; a plurality of elastic strands are attached to the outer portion of the middle sphere of the filler body, and bottomless hexagonal cones at two sides of the filler body are connected with the middle sphere.

2. The filler for MBBR sewage treatment of claim 1, wherein: the two sides of the body are respectively composed of six bottomless hexagonal pyramids, and the bottom surfaces of the hexagonal pyramids are composed of regular hexagons.

3. The filler for MBBR sewage treatment of claim 1, wherein: the spiral thread material is one or more of polypropylene, polyethylene, polyvinyl chloride and ABS resin.

4. The filler for MBBR sewage treatment of claim 3, wherein: the outer surface of the spiral thread-like material is subjected to a roughening treatment.

5. The filler for MBBR sewage treatment of claim 1, wherein: the size range of the microbial carrier filler is 5mm-10 mm.

6. The filler for MBBR sewage treatment of claim 1, wherein: 2-6 microorganism carriers are arranged in a single combined body.

7. The filler for MBBR sewage treatment of claim 1, wherein: the microbial carrier and the anoxic microbial carrier are one or more of hydrophilic plastics, light-hardening polyurethane resin, polyester fiber balls and polyurethane sponge fillers.

8. The filler for MBBR sewage treatment of claim 1, wherein: the microbial carrier is of a solid or hollow structure.

9. The filler for MBBR sewage treatment of claim 1, wherein: the elastic thread line on the outer surface of the middle ball is made of mixed copolymer of corrosion-resistant, high temperature-resistant and aging-resistant polyolefin and polyamide matched with hydrophilic, adsorption, heat-resistant and other assistants, has certain flexibility and rigidity, and is arranged in a three-dimensional uniform arrangement.

10. The filler for MBBR sewage treatment of claim 1, wherein: the magnetic particles have a particle size of 3 to 5 mm.