Autothermal thermophilic aerobic digestion process and its kinetic model for Pretreating Klebsiella Pneumoniae Waste

摘要

An autothermal thermophilic aerobic digestion (ATAD) and its kinetics were studied for pretreatment of waste Klebsiella pneumoniae strains from 1, 3-propanediol (1, 3-PD) fermented product. The total suspended solids (TSS), pH value, Redox potential and temperature variation by self-heating were investigated, including the numbers of pathogens. The results showed that TSS removal ratio and the temperature reached 62.75% and 65 °C respectively. Besides, the pathogens' removal ratio was 100%. By using a patch-typed process of ATAD for pre-treating waste Klebsiella pneumoniae strains from 1, 3-propanediol, TSS removal ratio can reach 65.0%, solids retention time of 13d. The relative deviation between the calculated and experimental values is less than 12.80%, and the results from the kinetic model developed for the ATAD process had a good agreement with the experimental results.