 The process of the gas phase treatment to remove CsOH and Cs2MoO4 radioactive aerosols labeled with cesium-137 (hereinafter, 137CsOH and 137Cs2MoO4) was studied using a setup containing elements of a submerged bed scrubber and a spiral filtering element. Water, basalt wool with a fiber diameter of 2.0 μm, perlite, and a mixture of perlite with Ca(OH)2 were used as the submerged bed. With this setup, it is possible to remove more than 99% of 137CsOH and 137Cs2MoO4 radioactive aerosols removed from the gas flow.