Aeration of activated sludge
WHY AERATION ?
There exist many different systems for ventilation in the process with activated sludge. The choice depends on the composition of wastewater, as well as conditions of construction and installation operation from the technical and economic point of view. The three essential modes are: pneumatic tyre (ventilation under pressure), mechanics (only ventilation of surface) and combined ventilation.
The process with activated sludge is currently the most valid process of biological purification of wastewater. Its great advantages are:
- security with regard to the degree of purification of treated water:
- a greater effectiveness than with the bacterial beds