Technology

Through its years refining an infrastructure-scale desalination solution using vapor distillation, Water Desalination International has recognized the need for an alternative process that carries lower up-front costs for installation operation and reliable, low-maintenance operation. Thus the sole focus of our technical development is now the Passarell Vapor Eschange System (P-VES):

An optimized flash distillation/evaporation process with the circulating thermal energy loop and using advanced process controls and materials
Energy input is minimized with precise temperature, flow, pressure control, and intensive heat recovery
Combines the benefits of distillation and evaporation - a Zero Liquid Discharge process
Designed to required volume in a compact cellular unit with a small footprint
Flexible rate of production

The development of this process was also undertaken with the intent of avoiding the practical constraints of the two major desalination approaches most widely in use, multi-stage flash distillation (MSF) and reverse osmosis (RO). The benefits of the P-VES process include the following:

No pre or post treatment, membrane washing, or waste brine - solid byproduct may even have value
Low maintenance design due to anti-scaling, corrosion resistance material techologies
Can tolerate many feedwater conditions, regardless of salinity or solids
Plant operating capacity can be configured to required production
Easily transported
Rapidly deployed