1, biological fluidized bed definition:
In order to improve the treatment efficiency of biofilm process, biological fluidized bed is a structure with sand (or anthracite, activated carbon, etc.) as the carrier. ) As filler and biofilm carrier, wastewater flows through the sand bed from bottom to top, making the carrier layer in a flowing state, thus increasing the contact area between biofilm and wastewater and providing sufficient oxygen in unit time, and strengthening the biological treatment process of wastewater by using the boiling state of filler.
2. Advantages: Compared with other bioreactors, the biological fluidized bed has the following advantages:
(1) The biomass per unit volume is large.
(2) The function of substances is strengthened, and the transfer process of organic matter in sewage to microbial cells is accelerated.
(3) The system will not be blocked by the accumulation of biomass.
(4) (4) BOD has high volume load and good treatment effect.
(5) Less floor space and less investment.
Therefore, the biological fluidized bed is an ideal wastewater treatment equipment with high efficiency, low cost and miniaturization, which has broad application prospects in the fields of urban sewage treatment and industrial wastewater.