Structure type and functional requirements of sewage treatment aerator

- Feb 24, 2019 -

Sewage treatment aerators are more common in sewage treatment. In order to ensure sufficient oxygen supply, it is necessary to rely on a kind of equipment to complete, and sewage treatment aerator is one of them. The types of aeration are roughly divided into two categories: one is blast aeration and the other is mechanical aeration. The blast aeration is an aeration method in which air bubbles are introduced into the water by using an aerator and a diffusion plate or a diffusion pipe. At present, most of the sewage treatment in ethylene plants is in this way. Mechanical aeration refers to an aeration method in which bubbles are introduced by means of an impeller or the like. 

For the user, no matter which type of sewage treatment aerator is used, it should meet three basic functional requirements:

1. It can produce and maintain effective gas-water contact, and maintain a certain dissolved oxygen concentration in the water while the biological oxidation continuously consumes oxygen;

2. Producing sufficient mixing action and circulating flow of water in the aeration zone;

3. Maintain sufficient velocity of the liquid to suspend the biosolids in the water.