Patent ID: 6389757
Filing Date: 2002-05-21
Classification: B01D

Abstract:
A clarifier cover for retaining off-gases inside a clarifier, comprising:first, second, third and fourth walls of a rectangular clarifier; a flexible sheet laid between said first, second, third and fourth walls, said flexible sheet having first, second, third and fourth margins; means for retaining and sealing said first margin to said first wall; means for pulling and releasably sealing said second, third and fourth margins to said second, third and fourth walls respectively; said means for retaining and sealing said first margin to said first wall comprising a first structural angle extending along said first wall and having a leg member aligned upwardly; whereby said first, second, third and fourth walls, and said flexible sheet are usable for containing off-gases inside a clarifier and said first structural angle provides kick plate means for enhancing a safety of workers working along said first wall of said clarifier.