This chapter presents a comprehensive survey of equipment applied in biological waste treatment. Firstly, it introduces the turner, describing its structure, applications, classification, models, and operational principles. Secondly, fermentation drums are detailed, with attention to their structural design, application scenarios, main types, and workings. Thirdly, the flip-flow screen is examined, highlighting its structure, applications, classification, working principle, essential safety devices, and regulatory requirements. Fourthly, the chapter discusses pneumatic and bouncing separators, outlining their introductions, structures, applications, classifications, and principles. Finally, biochemical treatment equipment is reviewed with respect to its overview, structure, applications, model classification, and operational principles. By systematically examining each equipment type, the chapter offers valuable technical insights and guidance for professionals engaged in biological waste management.