Bio-drying of municipal solid waste with high water content by aeration procedures regulation and inoculation.
To improve the water content reduction of municipal solid waste with high water content, the operations of supplementing a hydrolytic stage prior to aerobic degradation and inoculating the bio-drying products were conducted. A 'bio-drying index' was used to evaluate the bio-drying performance. For the aerobic processes, the inoculation accelerated organics degradation, enhanced the lignocelluloses degradation rate by 10.4%, and lowered water content by 7.0%. For the combined hydrolytic-aerobic processes, the inoculum addition had almost no positive effect on the bio-drying efficiency, but it enhanced the lignocelluloses degradation rate by 9.6% and strengthened the acidogenesis in the hydrolytic stage. Compared with the aerobic processes, the combined processes had a higher bio-drying index (4.20 for non-inoculated and 3.67 for the inoculated trials). Moreover, the lowest final water content occurred in the combined process without inoculation (50.5% decreased from an initial 72.0%).
Zhang
Dong-Qing
DQ
College of Environmental Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China.
He
Pin-Jing
PJ
Jin
Tai-Feng
TF
Shao
Li-Ming
LM
D000388:Air; D002947:Cities; D003890:Desiccation / Q000379:methods*; D004798:Enzymes / Q000378:metabolism; D005110:Extracellular Space / Q000201:enzymology; D010100:Oxygen; D013696:Temperature; D013997:Time Factors; D014866:Waste Products; D014867:Water / Q000378:metabolism*
D004798:Enzymes; D014866:Waste Products; D014867:Water; D010100:Oxygen