CN210286884U

CN210286884U - Biological fluidized bed filler

Info

Publication number: CN210286884U
Application number: CN201920290061.4U
Authority: CN
Inventors: 杨林; 杨英治; 杨世杰
Original assignee: Individual
Current assignee: Dalian Bodo Science And Technology Development Co ltd
Priority date: 2019-03-07
Filing date: 2019-03-07
Publication date: 2020-04-10
Anticipated expiration: 2029-03-07

Abstract

The utility model provides a biological fluidized bed filler, include: the biological fluidized bed filler comprises a filler main body, wherein a plurality of large holes and small holes are formed in the filler main body, and the density of the biological fluidized bed filler can be changed by changing the distribution quantity ratio of the large holes to the small holes in the filler main body. Microorganisms can be fixed in the filler, an anaerobic environment is formed inside the biological fluidized bed filler, and an aerobic environment is formed outside the biological fluidized bed filler, so that the biological fluidized bed filler can be more easily formed into a film.

Description

Biological fluidized bed filler

Technical Field

The utility model relates to a sewage treatment packs, especially relates to a biological fluidized bed filler.

Background

In a general activated sludge treatment system, sludge bulking, sludge floating and sludge loss exist; the sludge discharge amount is large, and the sludge disposal cost is high; short sludge retention time, low sludge concentration and load, large tank volume, and unfavorable culture of nitrobacteria and removal of total nitrogen of ammonia nitrogen.

Therefore, there are systems that employ biofilm filtration systems and use biological fillers for culturing microorganisms and the like. But the existing biofilm method of most fillers is as follows: under the same volume, the inner space of the filler is not fully utilized, which is reflected in that the specific surface area is small, the biological concentration is low, the mass transfer efficiency is not high, the inward transmission of substances such as dissolved oxygen, nitrate nitrogen, carbon source and the like is insufficient or even interrupted, and the multiphase coexistence of organisms can not be formed.

In addition, in the biofilm filtration system, some of the packing may sink directly to the bottom and cannot be treated throughout the tank. Moreover, some microorganisms are fallen in the filler to grow and are not easy to attach, which is not beneficial to the culture of the microorganisms.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem who mainly solves provides a biological fluidized bed filler can fix the microorganism in the filler, the inside anaerobic environment that forms of biological fluidized bed filler, outside formation aerobic environment makes biological fluidized bed filler can form the membrane more easily.

In order to solve the technical problem, the utility model provides a following technical scheme:

a biological fluidized bed packing, comprising:

the biological fluidized bed filler comprises a filler main body, wherein a plurality of large holes and a plurality of small holes are formed in the filler main body, the density of the biological fluidized bed filler can be changed by changing the distribution quantity ratio of the large holes to the small holes in the filler main body, the filler main body further comprises an anaerobic layer and an aerobic layer, the aerobic layer is arranged on the outer side of the filler main body, and the anaerobic layer is arranged on the inner side of the filler main body.

Preferably, the biological fluidized bed filler further comprises an oxygen channel, and the oxygen channel is communicated with the anaerobic layer and the aerobic layer.

Preferably, the biological fluidized bed filler is configured as a cube filler, and the large holes and the small holes are densely distributed on the surface of the cube filler.

Preferably, the large holes and the small holes are uniformly and densely distributed on the surface of the cubic filler.

Preferably, the large holes and the small holes are irregularly and densely distributed on the surface of the cubic filler.

Preferably, wherein the distribution density of said large pores and said small pores ranges from 10 to 70 PPI.

Preferably, wherein the pore size of said large pores and said small pores ranges from 1 to 20 microns.

By adopting the technical scheme, the biological fluidized bed filler can change the density of the biological fluidized bed filler, so that the biological fluidized bed filler can be suspended in liquid in the treatment process, and the comprehensive treatment of sewage is ensured. In addition, the surface of the biological fluidized bed filler has larger specific surface area, so that more microorganisms can be accommodated, and the used filler can be reduced in the same tank volume.

Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the appended claims.

Drawings

Fig. 1 is a schematic diagram of the application of the biological fluidized bed filler of the present invention.

Fig. 2 is an external schematic view of the biological fluidized bed packing of the present invention.

Fig. 3 is an internal schematic view of the biological fluidized bed packing of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

As shown in fig. 1, the present invention provides a biological fluidized bed packing 10, wherein the biological fluidized bed packing 10 is suitable for an aerobic tank in a high salinity sewage treatment system. And aerating the dissolved oxygen in the aerobic tank through an aeration device, so that the sewage in the aerobic tank is rolled. Thus, a typical packing may float on the surface of the liquid or sink to the bottom of the liquid during this process. The biological fluidized bed filler 10 in this embodiment can be suspended in the liquid in the aerobic tank and tumbled up and down with the liquid. It is advantageous to ensure that the biological fluidized bed packing 10 does not locally become clogged or locally have no microorganisms grown.

As shown in fig. 2, in the present embodiment, the biological fluidized bed filler 10 can change its density, wherein the biological fluidized bed filler 10 includes a filler main body 100, wherein the filler main body 100 has a plurality of large holes 11 and a plurality of small holes 12, the spacing between the large holes is 0.2-0.6mm, and the spacing between the large holes is not affected by the size of the large holes, so that when the large holes 11 are larger than the small holes 12, the filler density of the biological fluidized bed filler 10 in the same volume is larger. When the pore diameter of the large pore 11 is smaller than the small diameter 12, the packing density of the biological fluidized bed filler 10 with the same volume is smaller.

Therefore, after the biofilm formation of the sewage and the biological fluidized bed filler 10, the density of the biological fluidized bed filler 10 is made to be equivalent to that of the sewage, so that the biological fluidized bed filler 10 can be suspended in the sewage.

As shown in fig. 3, further, the biological fluidized bed filler 10 has an anaerobic layer 101 and an aerobic layer 102, wherein the anaerobic layer 101 is disposed inside the biological fluidized bed filler 10, and the aerobic layer 102 is disposed outside the biological fluidized bed filler 10. An anaerobic environment is formed in the anaerobic layer 101, and an aerobic environment is formed in the aerobic layer 102. The biological fluidized bed packing 10 is capable of immobilizing the microorganisms therein when the microorganisms are growing in the pore size and avoiding sludge bulking in the contaminated water.

The biological fluidized bed packing material 10 is easy to form a biofilm by microorganisms during the growth of the microorganisms. The biofilm is located between the anaerobic layer 101 and the aerobic layer 102, so that the biofilm structure can be suitable for synchronous denitrification.

In this embodiment, the biological fluidized bed filler 10 is a polyurethane foam sponge, which is characterized in that the polyurethane foam sponge is soft and elastic, and has physical properties of oil resistance, acid and alkali resistance, aging resistance, and the like, and the pore diameter of the surface can be irregularly distributed.

The biological fluidized bed filler 10 forms an oxygen channel 103 between the anaerobic layer 101 and the aerobic layer 102, and the oxygen channel 103 communicates the anaerobic layer 101 and the aerobic layer 102 and can provide oxygen so that microorganisms inside can also maintain a certain amount of oxygen.

The biological fluidized bed packing 10 has a square appearance, and the large pores 11 and the small pores 12 are uniformly distributed from the surface to the inside.

In another embodiment, the large holes 11 and the small holes 12 are irregularly distributed on the surface and inside of the biological fluidized bed packing 10. Wherein the distribution density of the large pores 11 and the small pores 12 is in the range of 10-70 PPI. PPI refers to how many pores per square centimeter.

In another embodiment, the distribution density of the large pores 11 and the small pores 12 is in the range of 10-20 PPI.

In another embodiment, the distribution density of the large pores 11 and the small pores 12 is in the range of 20-30 PPI.

Further wherein the pore size of said large pores 11 and said small pores 12 is in the range of 1-20 microns.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims

1. A biological fluidized bed packing, comprising:

the filler main body is provided with a plurality of large holes and a plurality of small holes, the density of the biological fluidized bed filler can be changed by changing the distribution quantity ratio of the large holes and the small holes in the filler main body, the filler main body further comprises an anaerobic layer and an aerobic layer, the aerobic layer is arranged on the outer side of the filler main body, and the anaerobic layer is arranged on the inner side of the filler main body.

2. The biological fluidized bed filler of claim 1, further comprising an oxygen channel communicating the anaerobic layer and the aerobic layer.

3. The biological fluidized bed filling according to claim 1, wherein the biological fluidized bed filling is configured as a cube filling, and the large holes and the small holes are densely distributed on the surface of the cube filling.

4. The biological fluidized bed packing of claim 3, wherein the large pores and the small pores are uniformly densely distributed on the surface of the cubic packing.

5. The biological fluidized bed packing of claim 3, wherein the large holes and the small holes are irregularly densely distributed on the surface of the cubic packing.

6. The biological fluidized bed packing according to any one of claims 1-5, wherein the distribution density of the large pores and the small pores is in the range of 10-70 PPI.

7. The biological fluidized bed packing of claim 6, wherein the large and small pores have a pore size in the range of 1-20 microns.