ZLD (Zero Liquid Discharge)

Zero Liquid Discharge (ZLD) technology is an advanced water treatment system designed to eliminate the release of wastewater into the sewer or surface.

This process aims to recover and reuse the treated water, generating as waste a concentrated liquid solution and a solid part that will be disposed of in specialized companies.

How ZLD (Zero Liquid Discharge) technology works

• Physico-chemical pretreatment: involves the removal of suspended solids and coarse materials from water.
• Primary and secondary treatment: involves the use of technologies such as reverse osmosis and evaporation to concentrate salts and other impurities.
• Crystallization: refers to a further concentration and crystallization of the residues in order to obtain dry solids and reduce further the water destined for external disposal.
• Solids management: means that the resulting solids are collected and disposed of or reused safely.

Applications of ZLD technology for zero exhaust systems

• Chemical and petrochemical industry: for the treatment of waste water containing hazardous chemicals.
• Textile industry: for water recovery and reuse in dyeing and finishing processes.
• Thermal power plants: for the management of cooling and process water.
• Mining: for the treatment of process and waste water, reducing environmental impact.
• Food and beverage industry: to ensure that waste water is treated in a way that does not contaminate the environment.

The ZLD technology  is particularly useful in areas with water scarcity or where environmental regulations are very strict, ensuring a sustainable use of water resources and protection of the environment. Visit the page dedicated to our zero -emission systems for further information.