The steam scraper evaporator is a crystallization and drying system that uses steam as the heat source and is integrated with vacuum technology and a cooling tower. As the vacuum inside the evaporation tank can reach –90 kPa or higher (i.e., a high vacuum), the boiling point of water is significantly lowered, thereby saving energy and improving evaporation efficiency. The built-in scraper design prevents material scaling and blockage. The equipment achieves liquid-solid separation, and the distilled water can be directly discharged to the wastewater station.

This unit can evaporate wastewater directly to a crystalline state. It is particularly suitable for challenging wastewater such as pharmaceutical wastewater, chemical wastewater, and landfill leachate. It maximizes volume reduction and helps enterprises cut outsourced disposal costs.

Scope of Application

Applicable to industries such as mechanical processing, pharmaceuticals, chemicals, food, hazardous waste disposal, semiconductors, landfill leachate, surface treatment, electroplating, PCB, coating, automotive parts, printing, ink, cables, and injection molding.

Oily wastewater, waste emulsion, high-salinity wastewater, MVR mother liquor, multi-effect evaporator mother liquor, pharmaceutical wastewater, scrubber wastewater, cutting fluid wastewater, ultrasonic wastewater, wire-cutting wastewater, membrane concentrate wastewater, RO concentrate, chemical wastewater, nickel-containing wastewater, degreasing wastewater, reactor washing wastewater, flaw detection wastewater, grinding wastewater, rolling waste liquid, wire drawing waste liquid, phosphating wastewater, washing wastewater, developer wastewater, floor cleaning wastewater, NMP wastewater, etc.

Evaporation unit for concentrate density up to 1.4 kg/L:
Fully automatic equipment. Vacuum will be formed once the evaporator starts. After collecting sufficient raw liquid, the feed valve transfers raw liquid into the main tank of the unit. When the boiling chamber reaches the operating liquid level, the heat pump starts operating (thus heating the raw liquid). By means of a pneumatic loading valve, the operating liquid level of the raw liquid in the evaporator is maintained. When the liquid inside the boiling chamber reaches the target density, the waste concentrate will be discharged. The evaporator switches from evaporation mode to concentrate discharge mode, transferring the concentrate into the distillation tank. The final residue is automatically drained from the evaporator by applying overpressure to the boiling chamber in conjunction with pneumatic valves. The unit automatically returns to the mode of drawing in and evaporating new liquid. The boiling point of the raw liquid inside the vacuum evaporator reaches 35–40°C, with an energy consumption of 160 W per liter. Low-energy-consumption models are also available.