A biological wastewater treatment plant works thanks to a natural process carried out by microorganisms. For these microorganisms to break down organic matter efficiently and for treatment to be stable, the plant often needs one important component: a biological sewerage compressor.
Simply put, the compressor supplies air. This air is used in the plant for aeration, which helps keep the active microorganisms working. Without aeration the biological process weakens, and the plant can start working erratically: odours appear, treatment quality drops and the risk of problems increases.
What exactly does the compressor do?
The compressor’s main job is to supply air to the aeration zone. In practice this means maintaining an environment in the plant in which the āgood bacteriaā can work efficiently. This is especially important if the house has a regular load, uses a washing machine and dishwasher, and the daily volume of wastewater varies.
The compressor may run continuously or in cycles, depending on the plant’s design and controls. This is normal operation, not a fault. What matters more is that the compressor runs evenly and has a sufficient air supply.
How can you tell the compressor needs maintenance?
The compressor is a mechanical device and over time it may need maintenance. The most common signs are:
- the compressor is louder than usual
- the air flow decreases (for example, the filter is clogged)
- the compressor stops working or works intermittently
Sometimes cleaning or replacing the filter is enough; other times a service check is needed.
What not to do, so you don’t damage the compressor and treatment
- don’t disconnect the compressor for long periods if the plant is in daily use
- don’t use large amounts of aggressive chemicals, as they damage the biological process
- don’t leave the compressor where it can get wet or flooded
Frequently asked questions
If you suspect the compressor isn’t working as it should, the safest option is to book maintenance in good time. This often costs less than a situation where the problem has been left too long and the whole system has to be restored.
