Fixed / Surface Aerator
Fixed / Surface Aerator:
Surface Aerator is a mechanical device uesed to dissolve Oxygen in water. There are different types of surface areators are available such as 1. Fixed aerator, 2. Floating Aerator.
Fixed aerators are most common for industrial purposes. Slow running industrial agitator fitted on a large lagoon acts as surface areator.
Aerators are efficient circulators, drawing liquid from below and distributing it with intense disturbance over the liquid surface. This positive circulating action is the reason for continuous, rapid and complete mixing which occurs in an aeration tank and which is fundamental to the success of the activated sludge method of treatment.
Conventional methods of aeration involve the use of reinforced concrete tanks or channels with fixed aerators supported by substantial bridges spanning the tank or channel in which they operate.
An alternative to this is the floating aerator in which the unit is mounted on a catamaran-type or four-pod support structure depending on the degree of stability demanded by the application.
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