Describes the operation of the mbbr stand
The important element of this treatment process is the moving media with a biofilm layer attached to the surface. These substrates are designed to have a large effective surface area for the biofim film to adhere to the surface of the substrate and create optimal conditions for microbial activity when these substrates are suspended in water. .
All substrates have a density lighter than the density of water, however each type of substrate has a different density. The most important condition of this treatment process is the density of the substrate in the tank. In order for the substrate to move and float in the tank, the density of the substrate accounts for 25 – 50% of the tank volume and is maximum in the tank. MBBR must be less than 67%. In each biofilm treatment process, the diffusion of nutrients (pollutants) inside and outside the membrane layer is an important factor in the treatment process, so the effective thickness of Membrane layer is also one of the important factors affecting treatment efficiency.
Advantages of wastewater treatment using MBBR method
- High density of treatment microorganisms per unit volume: The density of treatment microorganisms per unit volume is higher than the treatment system using the suspended activated sludge method, so The organic load of the MBBR tank is higher.
- Specific types of treatment microorganisms: The biofilm layer develops depending on the type of organic matter and organic load in the treatment tank.
- High processing efficiency.
- Save construction area: the construction area of MBBR is smaller than that of aerobic wastewater treatment systems for urban and industrial wastewater.
- Easy to operate.
- High loading conditions: The density of microorganisms in the biofilm layer is very high, so the organic load in the MBBR tank is very high.
- Withstand high organic load, 2000-10000gBOD/m³day, 2000-15000gCOD/m³day.
- BOD treatment efficiency up to 90%.
- Remove nitrogen from wastewater.
- Save space.
Scope of application
Applicable to most types of wastewater with organic pollution: schools, residential areas, hospitals, fisheries, food and beverage production and processing canning, industrial wastewater, textile dyeing