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Archive for November, 2011

In iron rich water, naturally occuring bacteria can sometimes give the appearance of oil on the surface.

Posted in Identifying a Pollution on November 15, 2011 | Comments Off

Some oil-like films, coatings, and slimes, although they may look bad, are natural phenomena. These phenomena can be caused by bacteria such as Thiobacillus ferrooxidans (Iron Bacteria). Slimes, oil-like films, and rock coatings are often made by bacteria that are reacting to the presence of minerals in the water. Bacteria live in wet areas, including: [...]

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The curse of the Red River! – A simple explanation…

Posted in Identifying a Pollution on November 15, 2011 | Comments Off

In many parts of the country, but especially in areas that are/have been mined for coal, you may seen some watercourses that are bright red or orange. Whilst the discharge itself is usually crystal clear, the bed of the watercourse below the discharge can be coated in a rusty deposit. What is this rusty deposit! ? Well [...]

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