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Bubble Aerators

In venturi aerator, the simplest type of bubble aerator, the aerator is kept higher than the pipe carrying the raw water. In the throat region the velocity of flow is so high that the water pressure is less than the atmospheric pressure. As a result air is sucked into the water.

After the throat region water flows through a wider pipe. In this region the velocity of flow decreases and the water pressure increases. The air bubbles are mixed intimately with water and oxygen is absorbed into the water.