Describe the mechanical and chemical processes required to prepare water for human consumption
What will be an ideal response?
The mechanical and chemical processes used to prepare water for human consumption consist of three stages. In
the first stage, larger pieces of solid materials that are floating or suspended in the water are filtered out. In the
second stage, smaller particles are coagulated into larger clumps that can be allowed to settle out in the form of
sedimentation. During both the first and second stages, biological decomposition of organic contaminants takes
place and most of the resulting decomposed materials are either filtered or settled out. During the third stage,
chemical treatment of the water is used to remove most of the remaining impurities.
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