This submersible mechanical aerator incorporates a pump and ejector mechanism so that both agitation and aeration can be carried out simultaneously. The BER pump features extremely high oxygen dissolution efficiency and a non-clog shaver mechanism.

The TR model is a submersible mechanical aerator that applies an innovative principle of operation. Negative pressure is created by the combination of rear blade action and the stream generated by a special open impeller. Air sucked in by this negative pressure creates a convective agitation effect. This results in extremely high oxygen dissolution efficiency and a uniform concentration at the internal MLSS.

The TRN is a modified version of the TR aerator, and is equipped with a non-clog impeller for aeration tanks in which large quantities of impurities are mixed.