Cleaning

Clogged membrane before cleaning (courtesy of Dr.-Ing. Frey)
Cleaning
To prevent the membranes from fouling it is strongly recommended to clean the membranes periodically.
The most common techniques are:
- Running the diffusers with the maximum overload airflow (air bumping) for a short period of time.
- Inject formic acid into the airflow
- Flush the whole system with acid or alkaline solution
- Dewater the tank and blow off the fouling with an high-pressure water jet

Flushing the membrane with acid solution (courtesy of Dr.-Ing. Frey)
One way to clean the membrane is to flush it with acid solution.