Ca2+ augmentation for enhancement of aerobically grown microbial granules in sludge blanket reactors.
Two sequential aerobic sludge blanket reactors were concurrently operated to examine the effect of Ca2+ augmentation on aerobic granulation. Augmentation with 100 mg Ca2+ l(-1) significantly decreased the time to cultivate aerobically grown microbial granules from 32 d to 16 d. Ca2+-fed granules were denser and more compact, showed better settling and strength characteristics, and had higher polysaccharide contents.
Jiang
He-Long
HL
Environmental Engineering Research Centre, School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798.
Tay
Joo-Hwa
JH
Liu
Yu
Y
Tay
Stephen Tiong-Lee
ST
D000332:Aerobiosis; D001420:Bacteria, Aerobic / Q000166:cytology / Q000187:drug effects* / Q000502:physiology* / Q000648:ultrastructure; D001422:Bacterial Adhesion / Q000187:drug effects / Q000502:physiology; D018533:Biomass; D019149:Bioreactors / Q000382:microbiology*; D002118:Calcium / Q000494:pharmacology*; D002452:Cell Count; D002455:Cell Division / Q000187:drug effects / Q000502:physiology; D012722:Sewage / Q000382:microbiology*
D012722:Sewage; D002118:Calcium