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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. Identification of Filamentous Micro-Organisms in Sludge (1993 Video)

    Subject
    Engineering
    Distribution
    Sale, Videocassette. Standard formats. col. 14 min., 1999 sale: £25.00 (+VAT +p&p)

    A sample of effluent is taken from a sewage works and is prepared for examination under the microscope. Various micro-organisms are identified.

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  3. Wetlands (1994 Video)

    Director
    Chris Warren
    Producer
    Bob Thorpe
    Subject
    Environmental science; Geography
    Distribution
    Sale, Videocassette. Standard formats. col. 30 min., 2000 sale: £30.00 (+VAT +p&p)

    Wetlands - a term encompassing bogs, marshes, swamps and estuaries, once systematically polluted or destroyed, are seen to be economically significant as a source of employment, agriculturally rich, and...

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  4. Loch Linnhe Project, The (1992 Video)

    Subject
    Agriculture
    Distribution
    Sale, Videocassette. VHS. col. 18 min., 1999 sale: £15.00 (+VAT inc. p&p)

    Nutrient inputs to coastal sea waters from agriculture, aquaculture and effluent disposal have an effect on the productivity of plankton. Excessive enhancement of productivity can affect the ecosystem,...

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  5. Sewage Treatment (1998 Video)

    Producer
    John Bailey
    Subject
    Engineering; Environmental science
    Distribution
    Sale, Videocassette. Standard formats. col. 26 min., 1999 sale: £55.00 (+VAT +p&p) VHS, non-higher education 1999 sale: £150.00 (+VAT +p&p) higher education - master tape for re-editing and copying 2000 sale: £35.00 (+VAT inc. p&p) VHS

    Looks at three sewage treatment plants in the Midlands. Examines in detail at the processes of a conventional sewage works, the large treatment plant at Minworth, following the process from the inlet at...

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  6. 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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  7. Paper (1993 Video)

    Producer
    Tony Jolly
    Subject
    Environmental science; Technology
    Distribution
    Off-air recording licence Sale, Videocassette. Standard formats. col. 24 min., 1998 sale: £145.00 (+VAT +p&p)

    Paper making requires huge volumes of clean waters, consume large amounts of electricity and generates solid and liquid wastes. Looks in detail at a large modern newsprint mill to show how water and heat are...

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  8. Environmental Control in the North Sea (1993 Video)

    Subject
    Environmental science
    Distribution
    Sale, Videocassette. Standard formats. col. 24 min., 1998 sale: £145.00 (+VAT +p&p)

    Looks at waste and water management aboard a North Sea oil platform. Considers not just the inevitable solid and liquid wastes of the accommodation for several hundred workers, but the complex industrial...

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