The efficiency and ecological aspects of surfactant solutions application for the phase separation of mechanical impurities and oil in oil sludges

The research on the efficiency of mechanical impurity separation from oil sludges that varied in their physical and chemical characteristics using surfactant solutions is conducted. And the waste water toxicity is investigated. Several synthetic surfactant solutions were tested in phase separation of mechanical impurities and oil. These surfactants differed in their technical characteristics and uncertain toxicity degree. Surfactant solutions are shown to be either effective for phase separation in oil sludges but toxic for biota, or to be less effective but stimulate biota. it is necessary to approach to their application in technological process after careful consideration and from the point of view of the ecological reasonableness and economic practicability.