Everything about Suspended Solids totally explained
Suspended solids refers to small solid particles which remain in
suspension in water as a
colloid or due to the motion of the water. It is used as one indicator of
water quality.
It is sometimes abbreviated
SS, but isn't to be confused with
settleable solids, also abbreviated SS, which contribute to the blocking of
sewer pipes.
Explanation
Suspended solids are important as
pollutants and
pathogens are carried on the surface of particles. The smaller the particle size, the greater the surface area per unit mass of particle, and so the greater the pollutant load that's likely to be carried.
Removal
Removal of suspended solids is generally achieved through the use of
sedimentation and/or
water filters (usually at a municipal level).By eliminating most of the suspended solids in a water supply, the significant water is usually rendered close to drinking quality. This is followed by
disinfection to ensure that any free floating pathogens, or pathogens associated with the small remaining amount of suspended solids, are rendered ineffective.
Effectiveness of filtering
The use of a very simple
cloth filter, consisting of a folded cotton
sari, drastically reduces the load of
cholera carried in the water, and is suitable for use by the very poor; in this case, an
appropriate technology method of disinfection might be added, such as
solar water disinfection.
A major exception to this generalization is
arsenic contamination of groundwater, as
arsenic is a very serious pollutant which is soluble, and thus not removed when suspended solids are removed. This makes it very difficult to remove, and finding an alternative water source is often the most realistic option.
Further Information
Get more info on 'Suspended Solids'.
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