What is the function and main composition of activated sludge blast aeration system?

The function of aeration system is to supply oxygen to aerobic activated sludge, so that microorganisms can consume organic matter to remove most organic matter, and supply oxygen to nitrifying bacteria to nitrify nitrogen pollutants (one of the main reactions to remove nitrogen pollutants).

Aeration system generally consists of aerator, pipeline system and aeration system.

Aerators are generally divided into blast aeration and mechanical aeration;

Piping system includes butterfly valve, check valve, exhaust valve and air conveying piping system at the outlet of fan;

There are many ways of aeration system, which are generally divided into perforated aeration and aerator aeration. Perforated aeration is to arrange aeration pipes at the bottom of the pond, and directly punch holes in the pipes, so that air can enter the pond through holes to achieve aeration effect. Generally, only micro and small sewage treatment stations are designed in this way to save costs, and more aerators such as disc aerators are used for aeration to achieve the purpose of uniform aeration and high oxygen utilization rate.

In addition, if mechanical aeration is used, aeration system and pipeline system are generally not needed. Mechanical aerators are generally used in micro and small sewage treatment stations and are directly installed in aerobic tanks.