METHOD FOR COLLECTING OIL SPILT UNDER ICE COVER Russian patent published in 1998 - IPC

FIELD: environment pollution control. SUBSTANCE: according to method, made in ice cover at river shores are openings which are located with displacement in direction of water flow. Openings are connected to each other by crushing ice cover, for example by sawing ice between them. Installed under ice cover at place where it is crushed is flexible chamber which is fixed in opening located upstream as to water flow direction. Chamber is conjugated with shore. In lower opening, chamber is positioned with clearance relative to shore, and installed in this clearance is intake part of pump. To arrange chamber under ice cover, it is secured to rope which is drawn between openings. Oil impurities are retained on surface of water medium under ice cover by flexible chamber and are carried along chamber by water flow towards lower opening where they are sucked in by intake part of pump. Retained water-oil mixture is delivered by pump into vessel where oil is separated from water. EFFECT: higher efficiency. 2 cl