A robust solution for intensive BOD and Nitrogen removal
The AGAR® Moving Bed Bio Reactor (MBBR) configuration offers a treatment process based on a bio-film which provides organic carbon removal, as well as nitrification and de-nitrification where needed, without circulation of activated sludge.
The process is simple, robust, and requires minimal operator intervention. Wastewater is introduced into a single or multiple-stage system (depending on whether Nitrogen removal is required), each of which contains the suitable volume of Aqwise Biomass Carriers.
The process configuration designed for BOD removal only is a once-through design, with 1 to 2 process stages in series. The number of stages is determined according to the required effluent quality. Wastewater enters the reactor, and effluent exits the reactor to a solids separation unit such as a clarifier, a DAF unit, media filtration, etc. In this configuration, there is no sludge recycle to the aeration tank, and all of the biological activity takes place in the bio-film on the carriers.
When Nitrogen removal is also required, the process will include a larger number of process stages, and an internal circulation of nitrified effluent to a pre-denitrification basin, but other than this, there is no sludge recycle from the solids separation unit.
The MBBR configuration is extremely well suited for a wide range of applications: from pre-treatment of RBC of industrial wastewater in order to cut down the organic load, to full treatment of municipal wastewater to the most stringent effluent requirements, as a stand alone solution or as a polishing of existing solutions such as lagoons.
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