Biological fluidized bed reaction zone process

A technology of biological fluidized bed and reaction zone, which is applied in the field of biological fluidized bed, can solve problems such as unsatisfactory solid-liquid separation effect of effluent, unsatisfactory coverage and difficult to realize large-area use, etc., to achieve good biological activity, The effect of strong resistance and fast update speed

Inactive Publication Date: 2021-03-19
BEIJING HUANERKANG TECH DEV
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a biological fluidized bed reaction zone process, which solves the problem that the solid-liquid separation effect of the traditional aerobic biological fluidized bed proposed in th

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Embodiment Construction

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0018] The invention provides a technical scheme: a biological fluidized bed reaction zone process, the specific process steps are as follows:

[0019] a) Choose suitable granular materials to construct the original BFB biofilm. Since BFB uses particles or even powder fillers with a large surface area, it can maintain a high microbial load in the fluidized bed. The microbial load is 40-50g / L, the granular material in the step a can be selected sand, activated carbon powder, coke, polyethylene material or porous ball as carrier, and its filler specific gravity is bounded between 0.96-1.30, and this biological fluidized bed reaction zone technology, BFB can pass through The amount of ...

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Abstract

The invention discloses a biological fluidized bed reaction zone process, relates to the technical field of biological fluidized beds, and in particular relates to a biological fluidized bed reactionzone process which comprises the following steps: a) selecting a proper granular material to construct an original BFB biological membrane, wherein because BFB adopts granules or even powder filler, the surface area is large, higher microbial biomass can be maintained in a fluidized bed, and the microbial biomass is 40-50 g/L. According to the biological fluidized bed reaction zone process, ceramsite, rubber, plastic carriers and the like are used as microbial carriers, and air or pure oxygen with a certain flow rate is introduced, so that sewage, compressed air and the microbial carriers flowupwards in the up-flow zone and flow downwards in the down-flow zone to form hydraulic circulation; and organic matters and nutrient substances in the sewage are adsorbed, oxidized and decomposed byutilizing a biological membrane continuously growing on the surface of the carrier, so that pollutants in the sewage are removed.

Description

technical field [0001] The invention relates to the technical field of biological fluidized beds, in particular to a biological fluidized bed reaction zone process. Background technique [0002] Biological fluidized bed means that in order to improve the treatment efficiency of biofilm method, sand is used as filler and used as a biofilm carrier. Wastewater flows through the sand bed from bottom to top to make the carrier layer in a fluid state, thereby increasing the biofilm and wastewater per unit time. The contact area and sufficient oxygen supply, and the structure that uses the boiling state of the filler to strengthen the wastewater biological treatment process, the surface area of ​​the filler in the structure exceeds 3300m2 / m3 filler, the biofilm growing on the filler rarely falls off, and the secondary sedimentation tank can be omitted. Membrane biological fluidized bed technology is used for advanced sewage treatment. On the basis of the original sewage discharge s...

Claims

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Application Information

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IPC IPC(8): C02F3/12
CPCC02F3/1268C02F2203/006Y02W10/10
Inventor 扈佳玉
Owner BEIJING HUANERKANG TECH DEV
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