Do they have a proper water sewage system in leather industry? plss anss!
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Sewage treatment generally involves three stages, called primary, secondary and tertiary treatment. Primary treatment consists of temporarily holding the sewage in a quiescent basin where heavy solids can settle to the bottom while oil, grease and lighter solids float to the surface.
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No,because most of the industries even though they have sewage system,they don't use the sewage system properly.They excrete the waste as it is without even bothering about the pollution and harms caused by the waste.Very few industries are only concerned about the pollution and take care of the treatment properly.
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