A method for controlled concentration and/or recovery of substantially dry solids, wherein the method comprises: a) providing a system for the recovery of substantially dry solids, said system comprising a container module, gas pressurizing means, vapor extraction means, and optional filters, wherein said container module comprises a first container that is provided with perforated base for passage of pressurized gas, a second container disposed in said first container so as to form a first continuous annular space on the sides as well as to define space between the base of said first container and the base of said second container to enable gas flow, wherein said first annular space is closed on the top, wherein the base of said second container has a substantially flat bottom, a third container disposed inside said second container to define a second continuous annular space on the sides as well as to define the space between the base of said third container and the base of said second container, wherein said second annular space is closed from top, the base of said third container being provided with perforations or passages; the base of said first container is operably connected with the outlet of the pressurized gas source, said container module is integrated in a housing with vapor extraction means at the top and an optional filter; b) filling a liquid medium selected from solution, dispersion, emulsion, slurry, gel or semisolid into said third container; c) making a pressurized gas to flow from the base of said first container through said first continuous annular space into said second continuous annular space and further from the passages in the base of said third container to mix with said liquid medium; d) causing the solvent to evaporate to concentrate the liquid medium and drying the solids in said system for recovery. a) providing a system for the recovery of substantially dry solids, said system comprising a container module, gas pressurizing means, vapor extraction means, and optional filters, wherein said container module comprises a first container that is provided with perforated base for passage of pressurized gas, a second container disposed in said first container so as to form a first continuous annular space on the sides as well as to define space between the base of said first container and the base of said second container to enable gas flow, wherein said first annular space is closed on the top, wherein the base of said second container has a substantially flat bottom, a third container disposed inside said second container to define a second continuous annular space on the sides as well as to define the space between the base of said third container and the base of said second container, wherein said second annular space is closed from top, the base of said third container being provided with perforations or passages; the base of said first container is operably connected with the outlet of the pressurized gas source, said container module is integrated in a housing with vapor extraction means at the top and an optional filter; b) filling a liquid medium selected from solution, dispersion, emulsion, slurry, gel or semisolid into said third container; c) making a pressurized gas to flow from the base of said first container through said first continuous annular space into said second continuous annular space and further from the passages in the base of said third container to mix with said liquid medium; d) causing the solvent to evaporate to concentrate the liquid medium and drying the solids in said system for recovery.