What is the activated sludge often used in the domestic sewage treatment equipment?

The sewage treatment industry often talk about activated sludge, sewage treatment equipment in the treatment of sewage is also indispensable.

The key point of activated sludge is its "activity", it does not have the traditional meaning of mud, it is with the ability to adsorb, decomposition of pollutants, particles, flocs. Mainly consists of four parts:

1, with metabolic function of the active microbial population, such as our common bacteria;

2, microbial endogenous respiration and their own oxidation of residues, such as bacterial carcasses and feces;

3, adsorbed difficult to degrade organic matter, such as plastics;

4, and adsorbed inorganic matter, such as fine sand.

Activated sludge plays its role in sewage and wastewater treatment in different forms. It not only helps the bacterial species to grow better, but also ensures that the bacterial species will not be lost with the sewage, as well as degradation of COD, ammonia and nitrogen, adsorption of debris and other functions.

When the activated sludge method is used in wastewater treatment, it is necessary to pay extra attention to its performance indicators, including: mixed liquor suspended solids (MLSS), sludge sedimentation ratio (SV), sludge volume index (SVI), color, odor and so on.