The efficiency of the MBBR process is conditioned by operational
conditions as the Filling Ratio (FR), and Dissolved Oxygen (DO). FR is the ratio between the volume occupied by the supports and the total volume of the reactor - VS/VR. This value can be changed and adapted to the desired conditions with an optimal range between 20 and 70% [4]
A moving bed biofilm reactor is a dynamic fixed-film biological treatment process that combines together the benefits of an activated sludge process with that of a trickling filter. Carrier media (that can come in a variety of shapes and sizes) are where the most important biofilm resides. These carriers are designed to maximize their interior surface area so that greater amounts of biofilm can grow. The biofilm has very high concentrations of bacteria and protozoa and is kept thin within the carriers to avoid excess clogging. Using either a diffusing aeration system or a mixer in the case of anaerobic or anoxic decomposition, the carriers are kept aloft within the reactor. The constant motion encourages improved contact between the biofilm and the substrate within the effluent solution. The bacteria absorb and metabolize the organic materials in the effluent and produce some manner of natural elements and compounds depending on whether the process is aerobic, anaerobic, or anoxic.
This mbbr plastic media, upon construction, the whole system can be set at a lower degree, say 40% in the beginning, and will just later move up to 70% through filling more carriers. The mbbr media surface area should also be considered as it is a great basis on the system performance.
MBBR process flow diagram shows a purpose of no more bioclogging and build-up of head loss. This moving bed biofilm reactor helps the system to discard recycling of the sludge through its activated sludge systems which provides a better advantage.
Compactness
Small footprint
Unit scale investment province
Impact resistance
Resistant to impact load and stable processing efficiency
Resistance to temperature changes
Flexibility
Almost any shape of reaction cell type can be used
The existing biological reaction tank can be used for process modification
Scalability
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