Biological fluidized bed reaction zone process

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...

AI Technical Summary

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 the background technology is not ideal, and its coverage cannot meet people's needs. Use requirements, as well as the response requirements of river sewage, and the production cost of its filler materials is high, and it is difficult to achieve large-scale use, etc.