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公开(公告)号：US3617552A
公开(公告)日：1971-11-02
申请号：US3617552D
申请日：1970-03-18
Applicant: STANDARD OIL CO
Inventor： WILL ROBERT G , GRUTSCH JAMES F
CPC classification number: E02B15/104 , Y02A20/204
Abstract: Oil-contaminated water is purified using apparatus having a revolving polyurethane foam belt which is mounted on an incline relative to the horizontal. The contaminated water moves past and through the revolving belt or the belt is mounted on a boat which moves the belt through the water. In either case, as the belt and water move relative to each other, the oil-contaminated water filters through the belt and is purified. The belt is then squeezed twice. First gently to remove water, and then vigorously to remove oil. The belt may include inner and outer abutting sections which are reinforced by a network of threads. The outer section which first contacts the contaminated water has a larger pore structure than the inner section.
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