Question

Small particles of sand in river water are removed by the process of
a decantation
b. evaporation
c. filtration​

Answer 1

Answer:

(a) Decantation

Explanation:

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Answer 2

Answer:

Decantation and filtration

Sand filters are used as a step in the water treatment process of water purification. There are three main types; rapid (gravity) sand filters, upward flow sand filters and slow sand filters. All three methods are used extensively in the water industry throughout the world.