Monthly Archive: January 2016

Organic Matter in Raw Water

Organic Matter in Raw Water Organic matter in raw water can be classified into two categories: naturally occurring and pollutants. Naturally organic matter will be present in raw water from a surface water or groundwater source influenced by surface water,...
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Bacterial Endotoxins in Water

Bacterial Endotoxins Raw water always contains Bacteria and Bacterial endotoxins that exists in a dynamic state. Dynamic state means the bacterial count is always variable, depending on environmental conditions controlling the rate of growth, bacteria will continually proliferate, while other...
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Microorganisms in Water

Microorganisms Raw water is contaminated with numerous microorganisms. Microorganisms can include viable bacteria, nonviable bacteria, slime, algae, viruses, and cysts. Measured bacterial levels in raw water supplies are significantly affected by the enumeration culture media. A heterotrophic plate count, as...
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Dissolved Gases in Raw Water

Dissolved Gases Dissolved gases are considered to be impurities and these are of two types wiz Non-reactive gases and Reactive gases. Non-reactive Gases: Nonreactive gases are dissolved gases, such as oxygen and nitrogen, that do not react with water to...
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Particulate Matter

Particulate matter Particulate matter is material which is non-soluble inorganic or organic impurities that may be exist in a water supply. It can be considered as the residue present on a filter media after water is passed through the filter. These can...
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Impurities in raw water - Ultra Pure Water

Impurities in raw water To discuss the various unit operations configured in a water purification system we need to know impurities present in raw water. The nature, type, and concentration of various impurities should define the water purification system. Definition...
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