Sludge and organic waste pretreatment device and method and waste treatment system

The invention relates to the technical field of sludge recycling of municipal drainage engineering, and provides a sludge and organic waste pretreatment device and method and a waste treatment system. The sludge and organic waste pretreatment device comprises a pre-reaction tank, a mechanical circulating pretreatment device and a circulating pump, a circulating pipeline is formed between the pre-reaction tank and the mechanical circulating pretreatment device, the pre-reaction tank further comprises a feed port and a steam injection port, the mechanical circulating pretreatment device further comprises a composite agent inlet and is provided with crushing equipment, and the circulating pump is arranged on the circulating pipeline. The cooperative pretreatment mode can accelerate the pre-reaction rate, improve the anaerobic digestion biogas productivity, and make the system run more stably. 本发明涉及市政排水工程污泥资源化技术领域，提供一种污泥和有机废弃物预处理装置与方法以及废弃物处理系统。该污泥和有机废弃物预处理装置包括预反应罐、机械循环预处理装置、循环泵；预反应罐与机械循环预处理装置之间形成循环管路，预反应罐还包括进料口和蒸