The Reduction and Effect of Tetracycline during Thermal Pretreatment of Dewatered Sludge and Subsequent High Solid Anaerobic Digestion

摘要

This paper studied the centralised treatment of dewatered sludge by high solid anaerobic digestion, especially focused on tetracycline (TC) fate during disposal process. Firstly, TC reduction was evaluated during different types of high solid anaerobic digestion using dewatered sludge. Secondly, the performance of high solid anaerobic digestion of dewatered sludge was investigated, including biogas production and system stability. The results showed that thermal pretreatment was not only efficient to TC reduction, but also was conducive to sludge solubilisation for high biogas production. The existing of TC had no negative effect on high solid anaerobic digestion with dewatered sludge.