UASB or EGSB Reactors use gas/liquid/solids (GLS) separators and overflow weirs in the reactor top section to separate biogas and biomass and settle and return biomass to the reactor sludge bed. IB-MR developed a novel type of GLS separator with special emphasis on simple design with good hydraulic characteristic in order to achieve optimal retention of granular and floccullant sludge particles.
IB-MR GLS separtors can be used in round aswell as rectangular tanks. They are suitable for new UASB plants and tanks adapted for use as UASB Reactors.
As a result of longterm experience with UASB- and EGSB-Reactors AAT prefers design and implementation of UASB plants mainly because of their superior operational stability.