Zero liquid discharge (ZLD)

Paleo Crystal offers a well-engineered Zero liquid discharge (ZLD) system to water treatment where all water is recovered and contaminants are reduced to solid waste. The goal of a zero liquid discharge system is to reduce the volume of wastewater that requires further treatment, economically process wastewater and produce a clean stream suitable for reuse. 

The ZLD System removes dissolved solids (mainly salt) from the wastewater and returns pure water to the process. Reverse osmosis (membrane filtration) is used to concentrate pretreated waste stream and return the clean permeate to the process, funnel the reject to an evaporator, and send the evaporator concentrate to a crystallizer or spray dryer.  The condensate from evaporator also returned to the process.

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