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A pre-film fluidized bed filler and its preparation method and application

A pre-membrane fluidized bed and fluidized bed technology are applied in the field of pre-membrane fluidized bed packing and its preparation to achieve the effect of enhancing the activity of microorganisms

Active Publication Date: 2021-08-03
常功法
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the growth cycles and conditions of various microorganisms in the flora are not the same, how to ensure the effective amount of membrane-hanging microorganisms has become a major technical problem

Method used

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  • A pre-film fluidized bed filler and its preparation method and application
  • A pre-film fluidized bed filler and its preparation method and application
  • A pre-film fluidized bed filler and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] A pre-film fluidized bed packing, comprising:

[0070] Filler core, the specific surface area is about 650m 2 / m 3 , the surface of the filler core is hydrophilic, and the θ angle is about 75°. The specific components are shown in the following table:

[0071]

[0072] The preparation method of above-mentioned pre-film fluidized bed packing, comprises the steps:

[0073] (1) Put the filler material core in the Bacillus megaterium bacterial liquid, and cultivate it at 28-32°C for 18-22 hours to prepare the filler with Bacillus megaterium on the surface;

[0074] (2) Place the filler loaded with Bacillus megaterium on the surface prepared in step (1) in the photosynthetic bacteria liquid, and control the dissolved oxygen concentration at 0.5-1mg / L to cultivate for 3-6 days under the condition of 28-32°C to produce Obtain the filler of photosynthetic bacteria loaded on the surface;

[0075] (3) placing the filler loaded with photosynthetic bacteria on the surface pr...

Embodiment 2

[0081] The pre-film fluidized bed filler as described in Example 1, the difference is that the pre-film microbial layer contains nitrifying bacteria and actinomycetes successively from the inside to the outside.

Embodiment 3

[0083] The pre-film fluidized bed filler as described in Example 1, the difference is that the pre-film microbial layer comprises photosynthetic bacteria, Bacillus megaterium, Bacillus subtilis, nitrifying bacteria and actinomycetes successively from inside to outside.

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PUM

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Abstract

The invention relates to a pre-film fluidized bed filler and its preparation method and application. A pre-film fluidized bed filler includes: a filler core with a specific surface area greater than 600m 2 / m 3 , the specific gravity is between 0.95 and 0.98; the pre-film microbial layer, coated on the surface of the filler core, contains at least two different microbial film layers from the inside to the outside, of which the nitrifying bacteria film layer is located in the actinomycete film layer layer inside. For the first time in the present invention, the surface of the filler material core is coated with multiple layers of different microbial coating layers. The nitrifying bacteria coating layer is located inside the actinomycetes coating layer. The nitrifying bacteria efficiently catalyze the nitrification reaction under aerobic conditions and convert ammonia nitrogen into Nitrate; Actinomycetes use their own large mycelium to provide strong stress resistance and protect the activity of the bacterial agent during the storage of the filler.

Description

technical field [0001] The invention relates to a pre-film fluidized bed filler, a preparation method and application thereof, and belongs to the technical field of sewage treatment. Background technique [0002] The biological fluidized bed process in sewage treatment uses the biofilm attached to the suspended filler to purify sewage. Its biomass is 2 to 3 times that of ordinary activated sludge method, and the efficiency of removing organic matter and total nitrogen is much higher than that of ordinary activated sewage. clay method. The application of MBBR technology can significantly reduce the floor space and operating costs of municipal sewage treatment plants, and is receiving more and more attention and application. [0003] The core equipment of the MBBR process is the fluidized bed packing where various functional bacteria fully grow and attach, so that the main functional bacteria such as ordinary heterotrophic bacteria that degrade COD, nitrifying bacteria and de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/10C02F3/34
CPCC02F3/107C02F3/108C02F3/34Y02W10/10
Inventor 常功法
Owner 常功法