Zero Liquid Discharge Plant

Eliminating all liquid waste from a system is the aim of the Zero Liquid Discharge (ZLD) treatment plant. Reducing wastewater economically and producing clean, reuse-ready water are the main goals of ZLD.

Traditionally, ZLD technologies have consisted of brine concentrators and crystallizers, which use thermal evaporation to convert brine into extremely pure water and solid dry products suitable for disposal in landfills or salt recovery.

The most widely used systems in ZLD processes are evaporator/crystallizer systems, but other promising technologies (ED/EDR, FO, and MD, which will be discussed later) with high recoveries have gained traction and are employed in various combinations to reduce costs and improve system efficiency.

When water is limited or the nearby water bodies are legally protected, ZLD is required because of the government’s progressively stricter rules regarding the release of brine due to its environmental impact. To address this issue, several industrial facilities and brine effluent contributors who, up until now, had either discharged brine to wastewater treatment plants or the adjacent available surface water or the sea.

Benefits of Zero Liquid Discharge

Zero-low discharge reduces the quantity of wastewater that requires treatment. This may reduce the burden on treatment facilities and contribute to the conservation of water resources.
this enables a substantial volume of water to be recovered from wastewater. After recovery, this water can be used again for agricultural, industrial activities, or other purposes.
It can help in reducing a facility’s dependence on freshwater sources by recycling wastewater. This is especially important in locations with limited water supplies.
The elimination of wastewater is subject to strict regulations in some places. Through the elimination of liquid waste discharge, ZLD can assist facilities in keeping to these rules.
By lowering water pollution and saving water, ZLD can assist in enhancing a facility’s environmental performance.

Applications of ZLD

Power Plants: ZLD is used to treat effluent from flue gas desulfurization systems and cooling towers in power plants.
Chemical Industry: Wastewater from various operations, such as the manufacturing of plastics, dyes, and medications, is treated using ZLD in this industry.
Mining Sector: Wastewater from extraction and mineral processing activities is treated using ZLD in the mining sector.
Oil and Gassector: Produced water and drilling wastewater are treated with ZLD in the oil and gas sector.
Food & Beverage Industry: ZLD is utilized in this sector to treat wastewater resulting from cleaning, hygiene, and processing processes.
Pulp and Paper Industry: Wastewater from the pulping, bleaching, and papermaking processes is treated in this industry using ZLD.

PTC WaterTech is particularly a manufacturer of Zero Liquid Discharge plants, they do provide industrial sand filters for water treatment. For information regarding the Zero Liquid Discharge plantand its availability, think about getting in touch with PTC WaterTech directly.