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Video-based teaching pack containing visual evidence of key scientific phenomena. All the video sequences have been chosen to show some aspect of the principles of biology as described in many new curriculum...
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...
Illustrates the modified Bailenger method for estimating the numbers of intestinal nematode eggs in waste water and MPN method for estimating the numbers of faecal coliform bacteria in wastewater.
A sample of effluent is taken from a sewage works and is prepared for examination under the microscope. Various micro-organisms are identified.
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 -...
Explains Advanced Water Treatment, an initiative that includes the use of granular activated carbon, ozone, and various other materials and techniques to improve the taste and odour of drinking water and...
Shows the treatment processes needed to make water from a reservoir fit for human consumption. Using animation and live action the path of water is followed through a typical European treatment plant dealing...
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...
Considers the pollution of the River Thames, tracing the history of the problem from the 19th century and showing the improvement brought about in recent years by the construction of two sewage treatment works.
Part 1: To maintain the quality of mains water, collected, treated and distributed by the water authorities requires close control of waste water discharges by industry at all stages. Costs of supplying and...
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