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  1. Treatment of Sewage, The (1979 Film, Video)

    Director
    Joyce Begbie
    Producer
    Joyce Begbie
    Subject
    Engineering
    Distribution
    Film (16mm)

    Follows the primary settlement and secondary biological treatment of sewage from a small town in the west of Scotland, using the activated sludge process. Describes the organisms in activated sludge are...

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  2. Sewage Treatment 1 (1992 Video)

    Subject
    Chemistry; Environmental science
    Distribution
    Sale, Videocassette. VHS. col. 22 min., 1997 sale: £28.75 (+VAT +p&p)

    Looks at the technical response to changing community standards on sewage treatment: 40 years ago - public health (primary treatment - screening, settling, anaerobic digestion, chlorination); 20 years ago -...

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