Cascade Aerator

A cascade aerator is a type of water treatment device used to increase the oxygen content of water by exposing it to air. It is commonly employed in water treatment plants, wastewater treatment facilities, and aquaculture systems for removal of dissolved gases, organic matter, iron & manganese (if present in high amount).

Process Description

The aerator operates by allowing water to flow down a series of steps or trays, creating a cascading effect. As the water cascades down, it comes into contact with the air, facilitating the transfer of oxygen from the air to the water. This process increases the dissolved oxygen levels in the water, which is beneficial for various reasons.

Significance & Advantages

The primary purpose of using cascade aerators in water treatment is to enhance the dissolved oxygen content, as adequate oxygen levels are crucial for the survival of aquatic organisms and the overall health of the aquatic ecosystem. By increasing the oxygen concentration, cascade aerators promote the growth of beneficial aerobic bacteria that aid in the decomposition of organic matter, helping to remove pollutants from the water.

Cascade aerators are also used to remove volatile gases, such as carbon dioxide and hydrogen sulfide, from the water. These gases can contribute to unpleasant odors and can be harmful to aquatic life if present in excessive amounts. By exposing the water to air, cascade aerators facilitate the release of these gases, improving water quality.