China ZLD Electric Heat Pump Wastewater Treatment Low Temp Evaporator Machine - Trusted Suppliers from Longhope Factory
1. Vacuum Evaporation Principle
Lower pressure reduces the boiling point. Under vacuum conditions (-95 to -97 kPa), the boiling chamber maintains a temperature of 35–37°C. This negative pressure enables automatic suction of raw materials into the chamber.
2. Compressor System Principle
A Freon-based compressor system facilitates heating and cooling. Notably, the system eliminates the need for a feeding pump—materials are drawn into the boiling chamber, transferred to a heat exchanger, and water is evaporated. A forced circulation pump ensures continuous atomization, while the evaporation chamber’s liquid level is auto-regulated. Once concentration targets are met, a built-in device discharges the concentrated liquid.
We specialize in high-quality corrosion-resistant materials including stainless steel (304, 316), duplex steels (2205, 2507), and titanium material. All our systems are certified with CE and other international standards.
By operating under negative pressure conditions (-95 to -97 kPa), the boiling point of the liquid is significantly reduced. This allows evaporation to occur at lower temperatures (35–37°C), which saves energy while maintaining optimal treatment performance.
No, the system eliminates the need for a feeding pump. The negative pressure created inside the boiling chamber automatically draws the raw materials into the system for evaporation.
Our vacuum evaporators are highly effective for treating oil emulsion, metal cleaning wastewater, printing & dyeing effluent, cutting fluid recycling, electroplating wastewater, and wastewater from the food & beverage and chemical industries.
Please contact us and share your specific wastewater type, daily treatment capacity, testing data, and desired treatment outcomes. Our professional R&D team will analyze the details to provide an accurate quotation and tailor-made solution.

