Operation and Maintenance
Most MBRs employ chemical maintenance cleaning on a weekly basis, which lasts 30-60 min,
and recoverycleaning when filtration is no longer durable, which occurs once or twice a year.
A deposit that cannot be removed by available methods of cleaning is called ˇ°ir-recoverable foulingˇ±.
This fouling builds up over the years of operation and eventually determines the membrane
life-time (RADJENOVIC et al. 2008). All O&M tasks have to be done by skilled workers.
