Evaluation of continuous mesophilic anaerobic sludge digestion after high temperature microwave pretreatment.
Effect of microwave pretreatment (MW) high temperature (175 degrees C) and MW intensity to waste activated sludge digested with acclimatized inoculum in single- and dual-stage semi-continuous mesophilic anaerobic digesters at different sludge retention times (SRTs) (20, 10 and 5 days) were investigated. MW pretreatment led to similar sludge stabilization at low SRTs (5 and 10 days). Although lowering MW intensity slightly improved sludge solubilization, it had a negative effect on digestion at low SRTs. Single-stage digesters with MW pretreatment surpass dual-stage digesters performances.
Toreci
Isil
I
Department of Chemical and Biological Engineering, University of Ottawa, 161, Louis Pasteur Room A412, Ottawa, ON K1N6N5, Canada. toreci@eng.uottawa.ca
Kennedy
Kevin J
KJ
Droste
Ronald L
RL
D000064:Acclimatization / Q000528:radiation effects; D000693:Anaerobiosis / Q000528:radiation effects; D001419:Bacteria / Q000528:radiation effects; D019149:Bioreactors; D006358:Hot Temperature; D008872:Microwaves; D010100:Oxygen; D012722:Sewage / Q000382:microbiology*; D012995:Solubility / Q000528:radiation effects; D014835:Volatilization / Q000528:radiation effects; D014865:Waste Disposal, Fluid
D012722:Sewage; D010100:Oxygen