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Question
Suspended impurities can not be removed by :
Suspended impurities can not be removed by :
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Solution
The correct option is D electromagnetic method
Suspended and dissolved impurities can be removed by sedimentation, filtration, coagulation, flocculation.
The process of consolidation of colloidal particles, terminating in precipitation of the substances removed from the treated water by settling or filtration is called coagulation.
The process of coagulation could be improved by adding special reagents known as flocculants.
Flocculants are the particles absorbed on the dispersed particles and on coagulants flakes to convert them into particles of reasonable large size and high stability.
Starch, sodium poly alginate, polyacrylamide etc. are examples of flocculants.
Hence the correct option is D.
Suspended and dissolved impurities can be removed by sedimentation, filtration, coagulation, flocculation.
The process of consolidation of colloidal particles, terminating in precipitation of the substances removed from the treated water by settling or filtration is called coagulation.
The process of coagulation could be improved by adding special reagents known as flocculants.
Flocculants are the particles absorbed on the dispersed particles and on coagulants flakes to convert them into particles of reasonable large size and high stability.
Starch, sodium poly alginate, polyacrylamide etc. are examples of flocculants.
Hence the correct option is D.
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