This process involves pre treating waste spinning materials through methods such as splitting, crushing, and drying, and then sending them to a depolymerization equipment to recover DMT. After polymerization and granulation, PET slices are produced and spun into regenerated silk.The equipment used in the process of producing regenerated fibers from waste chemical fiber products mainly relies on electricity as the energy source. The waste pollutants generated during the preparation process are mainly dust, which is captured by a bag filter system. The solid waste produced in production mainly includes waste buttons, oligomer waste residue, solution filtration residue, waste residue, waste slices, slag, etc. The wastewater generated by the project is mainly domestic wastewater, and the main components of the waste gas pollutants produced are SO2, NOx, etc; Dust solid particles are generated during the pretreatment, polymerization reaction, and spinning process stages.This dataset is applicable to the process of producing regenerated fibers from waste synthetic fibers. "