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Technology / ZLD Technology

As Egypt strategy to save water consumption in both domestic and industrial usage, Ethydco take lead in new trend in water reuse technology to have Zero Liquid Discharge (ZLD), that will maximize the usage of incoming water as much as possible which lead to reduce/ Save the imported water from the River Nile.

Accordingly AQUATECH has been awarded a contract by the Egyptian Ethylene and Derivatives Company (ETHYDCO) to provide a water treatment facility that includes the first integrated Zero Liquid Discharge (ZLD) plant in Egypt.

The awarding of this contract was commemorated on Monday, 25 March as a bold initiative undertaken by ETHYDCO, which will be the pioneer in installing a Zero Liquid Discharge plant. The feed water to the plant will be a composite mix of treated effluent and water from River Nile, having inconsistent water chemistry throughout the year.


After a lot of due diligence done by ETHYDCO and its consultant Enppi, Aquatech’s proposed schematic was selected because it can optimally treat this type of feed water.

“With this plant in place, ETHYDCO shall meet all the requisite norms of Zero Liquid Discharge established by the Egyptian government to protect their only life-giving aquifer, The River Nile. The success of this project is keenly viewed by the Egyptian government and the industry in this region. Once successful, it shall become a beacon for other industries not only in Egypt, but also GCC countries, to follow.”

The ZLD plant was installed at ETHYDCO’s site in Alexandria. A subsidiary of Egyptian Holding Co. for Petrochemical (ECHEM), ETHYDCO produces ethylene and other petroleum derivatives at this site. The plant designed and installed by Aquatech will treat wastewater from this facility and cooling tower blow down to get cooling tower makeup water, Demineralized water and achieve Zero Liquid Discharge.

The technology provided by Aquatech is a microfiltration system, a High Efficiency Reverse Osmosis (HEROTM) system, followed by Fractional Electro Deionization (FEDITM) and brine concentrator, and finally a crystallizer and sludge treatment system.