PROCEDE DE TRAITEMENT D'UN MILIEU AQUEUX POLLUE PAR DES HYDROCARBURES ET COMPOSITION DESEMULSIFIANTE ET DISPERSANTE A BASE D'ESTERS DE POLYGLYCEROLS

摘要

Treatment of an aqueous medium polluted with petroleum hydrocarbons comprises contacting the petroleum with a solution of a mixture of polyglycerol esters in an amount of at least 50 (200-10,000, especially 500-6000) ppm by weight, to inhibit formation of a water in petroleum oil emulsion and at least partially to break any emulsion that has already formed.