Falling film evaporator HPD®

rising filmforced circulationprocess

For over 85 years, HPD® — a Veolia Water Technologies subsidiary — has helped industries meet their financial, production and environmental objectives by providing efficient and fully integrated evaporation & crystallization processes that recover valuable products and by-products, reuse/recycle valuable water resources, and reduce effluent volume through unique process design. Evaporation is often used when membrane technologies become impractical at higher concentrations of total dissolved solids (TDS). With more than 1,000 installations in over 30 countries, Veolia Water Technologies has the largest number of successful installations and experience across the widest range of applications for industrial large-scale evaporation and crystallization equipment. This includes treatment of wastewater for zero liquid discharge (ZLD) by concentrating dilute streams, recycling and recovering water for reuse and environmental benefits. This also includes industrial crystallization for the production of premium crystalline chemicals from natural deposits, and recovering of valuable by-products from waste streams. Based on the specific application, we offer several equipment technologies for evaporation that include: • Falling film evaporator • Natural circulation evaporator • Rising film evaporator • Forced circulation evaporator • Enhanced forced circulation evaporator(turbulence enhancers for highly viscous feed) The type of evaporator used will largely depend on the chemistry of the solution to avoid scaling of heat transfer surfaces.