Abstract: A process to purify polar liquid wastes consists in treating the wastes with a flocculating composition formed by a concentrated suspension of montmorillonite into a polar liquid, and preferably into the same polar liquid waste to be treated. Selected pH and concentration ranges are determined in order to obtain short or very short contact times and a complete purification of the treated polar liquid wastes.

Abstract: A process is disclosed for preparing a biomass to improve the kinetics of solid-state oxidative biotransformations. The method comprises pulverizing a biomass comprising a solid culture substrate, mixing the pulverized biomass with an inoculum containing microorganisms, adjusting the moisture content of the mixed biomass to at least 25% (w/w), saturating the biomass with air or oxygen during steps and agglomerating the pulverized, mixed and saturated biomass into granules having a volume of less than 10 cm.sup.3.

Abstract: The device (1) separates two components of a mixture (11) of non-miscible liquids, especially water or salt water and oils. The device (1) consists of a hollow body (2), having an inlet port (4) to feed the mixture (11) and outlet ports (5,6) to discharge the separated components, and a filter (7) formed of a loosely packed hydrophilic material (8) in fibers, and positioned between the inlet port (4) and the outlet port (5) of the separated water. The filter (7), when soaked with clean water, lets through only the water component of the mixture (11), while the oil component is repelled therefrom. The method separates the components of a mixture of non-miscible liquids, making use of the device specified heretofore.