Development of an emulsion membrane (ELM) was carried out, in view to separate the radioactive metals (cobalt and uranium ions) from the contaminated waters. For this purpose, we have studied by their specific properties, Span 80 (Fluka) as emulsifier, Aliquat 336 (tricapril-methyl-ammonium chloride) and an alkyl phosphoric ester, as carriers. Tests with emulsion membranes on wastewater containing uranium and cobalt radio nuclides were performed.