Combined aeration system - for oxygenation of sewage using surface agitator and compressed air feed

摘要

The compressed air is injected from rings, pipes or gratings near the bottom of the tank as in parent patent. To ensure thorough circulation of the bubbles and so prevent premature settling of the activated sludge, deflector plates or alternatively boxes or ducts, at an angle to the walls, or curved, are placed above and to the sides of the air injectors.