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Presenter Dan Snow traces the evolution of three of the world’s major cities, from the perspective of their unhygienic pasts, looking at how Paris, London and New York have evolved into paradigms of the...
Briefly summarises the evolution and current practice of drainage in the UK. The first part of the film highlights, using a variety of contemporary images, texts and photographs, the problems of disease and...
Aimed at employees who regularly work with sewage, sewage sludge and polluted waters. The programme identifies the risks employees are at from the many biological and chemical agents that inhabit sewage and...
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.
Illustrates the appropriate use of control measures to reduce the risk of what can be serious diseases. It describes the causes of illnesses like diarrhoea, gastro-enteritis and salmonella. The industries...
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...
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