MBBR Technology
Technical Details
The aerated MBBR uses, as the activated sludge process, the whole volume of an open tank. It is defined as a biofilm system, as the biomass is growing on carriers that move freely within the reactor volume and are kept within the reactors by a sieve at the reactor outlet. The system can be used either for aerobic or anoxic processes. In aerobic processes the biofilm carriers are kept in suspension by the agitation created by air from aeration diffusers, while in anoxic processes a mixer keep the carriers in movement. A schematic of the principle in an implementation of the WOCK OLIVER MBBR technology is shown below
(Figure 1).

Figure 1: Schematic showing the principle of the MBBR


Small Boss MBBR Biofilm Carries
We supply a range of biofilter media, This product is sold by the cubic metre. These products are suited to fluidized or moving bed tank systems. These are also called "Biofilm Reactor (MBBR)"systems and are used for treatment of water and wastewater.

Self cleaning due to turbulence:
Due to the turbulent movement of the biofilter media in suspension,the filter media is self-cleaning ,requiring no maintenance.This allows the filter to reach optimum effeciveness without the disturbance of periodic maintenance,avoiding unnecessary loss of bacteria within the filter.This allows stable,low levels of ammonia and nitrite within the water.
The first few of these products are similar to the patented kaldnes media used in fish farming and waste treatment .The design creates an environment for effective nitrification to take place .Twater flow is created by aeration tha circulates the media throughout the vessel .This high suface area of these products traslates into a small physical area needed for the biofiltration unit.
Due to vigorous mixing of the kaldnes-like media through aeration,the media is self-cleaning,Requiring no maintenance.This allows the filter to reach optimum effectiveness
Periodic maintenance is not necessary,preventing the unnecessary loss of bacteria and subsequent ammonia and nitrite spikes in the system.

Media volume needed:
with good turbulence and aeration, a feed rate of between 0.25 kgs and 0.75 kgs of 40% protein food per day requires 50 litres of media.