How to correct bioreactor dissolved oxygen deficiency on a Veolia Evoqua Memcor MBR system
DO below 1 mg/L in the bioreactor during normal loading means the aeration blowers are not delivering enough air. Check blower speed, discharge pressure, and diffuser condition before raising the DO setpoint.
~60 min6 steps
How to recover from membrane fouling and flux decline on a Veolia Evoqua Memcor MBR system
TMP rising faster than normal or physical cleaning no longer recovering TMP means reversible fouling has crossed into irreversible. Perform a chemical clean-in-place (CIP) with hypochlorite and citric acid.
~120 min6 steps
How to investigate permeate quality deterioration and high turbidity on a Veolia Evoqua Memcor MBR system
Elevated permeate turbidity means a broken fiber or a failed o-ring is allowing mixed liquor to bypass the membrane. Run an integrity test to identify the damaged cassette.
~90 min7 steps