Bidboland Persian Gulf Gas Refinery Launches ZLD Water Recycling Package

Bidboland Persian Gulf Gas Refinery Launches ZLD Water Recycling Package
(Saturday, January 25, 2025) 15:39

TEHRAN (NIPNA) – Bidboland Persian Gulf Gas Refinery has inaugurated its state-of-the-art Zero Liquid Discharge (ZLD) water recycling package, capable of recycling one million liters of wastewater per day into industrial water. The project, completed with an investment of €4.2 million, aims to maximize water reuse and minimize waste discharge.

According to the refinery's public relations office, the ZLD package, now in its final phase of operation, includes advanced technologies such as clariflocculators, sand filters, ultrafiltration units, reverse osmosis (RO) systems, and decanters for sludge dewatering. These technologies work in synergy to achieve a recycling efficiency of 97%, reducing wastewater discharge to nearly zero.

In the final stage of the process, the ZLD unit treats high-hardness wastewater with more than 80,000 ppm, producing purified water for industrial use while isolating dry salt. Previously discharged wastewater streams, including blowdown from boilers, cooling towers, and RO systems, are now fully recycled into the refinery’s industrial water system, with only 3% remaining as unrecoverable crystallized salt and sludge.

Executed under an EPCC contract with Middle East Absan Energy, the project aligns with international standards and underscores the company’s commitment to environmental sustainability. By eliminating the need for evaporation ponds, the system significantly reduces environmental impact while safeguarding water resources.

This project, part of Bidboland Persian Gulf Gas Refinery’s broader environmental initiatives, supports sustainable development and resource conservation in Iran. Following rigorous performance and operational testing, the ZLD package was officially launched in February 2025, coinciding with the refinery's fourth anniversary.

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