ZLD (Zero Discharge Liquid)

Zero Liquid Discharge (ZLD) is a process that is beneficial to petrochemical plants and industrial organizations as well as the environment because it saves money and no discharge is left over. ZLD systems employ the most advanced wastewater treatment technologies to purify and recycle approximately all of the wastewater produced.

Normally the evaporation-crystallizing section receives the reject from a reverse osmosis section that is concentrates dissolved solids. ZLD technology includes pre-treatment and evaporation of the industrial effluent until the dissolved solids chemical precipitate as crystals. These crystals are removed and dewatered. The water vapor from evaporation is condensed and returned to the process.

Due to environmental sensitivity and long term water supply concerns many industrial companies are considering ways to reduce their water discharges with Zero Liquid Discharge (ZLD) processes.

Treat and recover valuable products from waste streams.

Better manage produced water.