Using steam as the primary heat source, combines an external cooling system, such as a cooling tower or chiller, Heat Pump Low-Temperature Crystallization Equipment heats wastewater while condenses the vapor. Operating under high vacuum conditions lowers the boiling point, allowing water to evaporate at reduced temperatures to protect heat-sensitive materials and improve energy efficiency. Additionally, integrated mechanical stirring enhances heat transfer, resulting in a more efficient and energy-saving evaporation and crystallization process.