CN212609798U - MBBR suspended biological filler - Google Patents
MBBR suspended biological filler Download PDFInfo
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- CN212609798U CN212609798U CN202020848104.9U CN202020848104U CN212609798U CN 212609798 U CN212609798 U CN 212609798U CN 202020848104 U CN202020848104 U CN 202020848104U CN 212609798 U CN212609798 U CN 212609798U
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- suspended biological
- biological filler
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The utility model discloses a MBBR suspended biological filler, the surface is crude, and effective specific surface area is big, and easy microbial growth adheres to, can effectively improve MBBR suspended biological filler in town domestic sewage biochemical treatment's biochemical treatment efficiency, improves COD degradability and denitrification function.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to an MBBR suspended biological filler for strengthening denitrification.
Background
Moving bed biofilm process (MBBR) is a high-efficiency biochemical sewage treatment technology. Since the first set of biological moving bed process units was built in 1989, thousands of municipal and industrial wastewater treatment facilities have been built in more than 50 countries, with good results. The process uses suspended biological fillers as growth carriers for microorganisms, and realizes efficient treatment of sewage through sufficient fluidization of the suspended biological fillers. The MBBR technology not only overcomes the defects that a fixed bed reactor needs regular back flushing, a fluidized bed reactor needs carrier fluidization, and the submerged biological filter is polluted and blocked and needs the complex operations of cleaning filter materials and replacing an aerator, but also keeps the characteristics of impact load resistance, low sludge yield and long sludge age of the traditional biomembrane method. Compared with the activated sludge method, the method has longer sludge age, can keep more nitrifying bacteria and has better denitrification effect.
In the MBBR process, the growth speed and the attachment amount of microorganisms on suspended biological fillers are important factors influencing the sewage treatment efficiency. The growth speed, the attachment amount and the tight combination degree of the microorganisms on the suspended biological filler and the biological film are not only related to the characteristics of the microorganisms, but also related to the characteristics of the suspended biological filler. The surface characteristics, pore structures and specific surface areas of the suspended biological fillers have very important influence on the adsorption, mass transfer and water treatment performance of microorganisms.
Disclosure of Invention
The invention aims to prepare the MBBR suspended biological filler which has large specific surface area, is suitable for the growth of microorganisms and has stronger denitrification and denitrification functions by optimizing a forming process.
In order to achieve the purpose, the invention provides an MBBR suspended biological filler, the center of the MBBR suspended biological filler is a regular hexagon, two to five layers of outer layers of the MBBR suspended biological filler are hollow regular hexagons, the side length of each regular hexagon is 2-5mm, each regular hexagon comprises a raised toothed structure, the projecting length of each toothed structure is 1-2mm, each toothed structure is symmetrically distributed, the outermost layer of each regular hexagon is in an uneven arc lace shape, the height of the MBBR suspended biological filler is 8-20mm, the structure is large in comparison area, the biofilm formation area of microorganisms on the suspended biological filler can be effectively increased, and the MBBR suspended biological filler has good fluidization performance.
Drawings
FIG. 1 is a schematic structural diagram of the MBBR suspended biological filler of the invention.
Detailed Description
The MBBR suspended biological filler is shown in figure 1, the center of the MBBR suspended biological filler is a regular hexagon 1, two to five layers of outer layers of the MBBR suspended biological filler are hollow regular hexagons, the side length of each regular hexagon is 2-5mm, each regular hexagon comprises a convex dentate structure 2, the protruding length of each dentate structure 2 is 1-2mm, the regular hexagons are symmetrically distributed, the outermost layer of each MBBR suspended biological filler is an uneven arc lace shape 3, and the height of the MBBR suspended biological filler overall structure 1 is 8-20 mm.
And (3) testing the biochemical treatment performance of the MBBR suspended biological filler: the same amount of examples and comparative examples (commercial MBBR suspended bio-filler) was taken and placed in 5 parallel bioreactors for testing, and the MBBR suspended bio-filler packing rate was 40%. The culture of the biological membrane adopts the following method: taking activated sludge of a certain urban sewage treatment plant, adding nutrient solution (C: N: P =100:5: 1) into a membrane bioreactor for culture, controlling anaerobic and aerobic time by adopting an intermittent aeration mode during the culture, and introducing sewage at a biochemical treatment inlet of the sewage treatment plant for acclimatization after 7 days of culture. The water temperature is about 25-30 ℃, the COD, ammonia nitrogen, total nitrogen and total phosphorus content of the effluent are sampled and detected every day, the effluent index is basically stable and then the suspended filler MBBR is considered to be finished by film forming, and the biochemical treatment enters a stabilization period. The experimental result shows that the biofilm formation time of the MBBR suspended biological filler is shorter, wherein the average biofilm formation time is 12 days, and the comparative example is 16 days.
And the MBBR suspended biological filler detects the water outlet indexes of the bioreactors after the biofilm formation is stable for 30 days continuously, and compares the sewage biochemical treatment performance of the MBBR suspended biological filler by taking an average value. Experimental results show that the MBBR suspended biological filler has better COD (chemical oxygen demand) and ammonia nitrogen removal effects in sewage treatment. The main reasons are as follows: the surface of the suspended biological filler is rough, the effective specific surface area is improved, the film forming starting time is shortened, and the film forming amount is increased.
The above embodiments are intended to illustrate the concept and features of the present invention, but the design concept of the present invention is not limited thereto, and the present embodiments do not limit the scope of the present invention, and all the persons skilled in the art who use the concept to make insubstantial changes or equivalent substitutions on the present invention shall fall within the scope of the present invention.
Claims (1)
1. The utility model provides a MBBR suspended biological filler which characterized in that, MBBR suspended biological filler center is a regular hexagon (1), and outer two to five layers are hollow regular hexagon, and regular hexagon's length of side is 2-5mm, contains bellied dentate structure (2), and dentate structure protrusion length is 1-2mm, is the symmetric distribution, and the outmost is unevenness's circular arc lace shape (3), and the height is 8-20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020848104.9U CN212609798U (en) | 2020-05-20 | 2020-05-20 | MBBR suspended biological filler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020848104.9U CN212609798U (en) | 2020-05-20 | 2020-05-20 | MBBR suspended biological filler |
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| Publication Number | Publication Date |
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| CN212609798U true CN212609798U (en) | 2021-02-26 |
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| CN202020848104.9U Active CN212609798U (en) | 2020-05-20 | 2020-05-20 | MBBR suspended biological filler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111439830A (en) * | 2020-05-20 | 2020-07-24 | 内蒙古圣清科技有限公司 | MBBR suspended biological filler and preparation method thereof |
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2020
- 2020-05-20 CN CN202020848104.9U patent/CN212609798U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111439830A (en) * | 2020-05-20 | 2020-07-24 | 内蒙古圣清科技有限公司 | MBBR suspended biological filler and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A MBBR suspended biological filler Effective date of registration: 20220801 Granted publication date: 20210226 Pledgee: Bank of China Limited Xilinhot branch Pledgor: Inner Mongolia Shengqing Technology Co.,Ltd. Registration number: Y2022150000080 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |