Explain the functioning of a Gravitational Settling Chamber with the help of a diagram

Explain the functioning of a Gravitational Settling Chamber with the help of a diagram.

A Gravitational Settling Chamber is a rectangular chamber in which several horizontal trays are fixed. When the polluted gas enters the chamber, its velocity is kept low so that the particulates get sufficient time to settle down due to gravity. The high density pollutants settle down at the bottom of the chamber which are then removed.
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