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Project		Sulaibiya Wastewater Treatment and Reclamation Plant
Client		Philipp Holzmann Kharafi Sulaibiya Joint Venture
Country		Kuwait
Time frame		1998-2005

Full design and consulting services for the Sulaibiya WWTP, tendered on BOT basis, for the treatment of Kuwait's municipal wastewater of 2.5 million PE.

The basic idea behind the Sulaibiya Project is to treat the wastewater from Kuwait in a plant to such a level that the treated water meets the WHO drinking water guideline and can be used without restrictions for non-potable water purposes.

The project consists of the following:

• Ardiya Pre-Treatment Plant - measuring unit for raw wastewater flow and quantity, fine screen, sand and grease trap as well as 2 buffer tanks are located at the site of the old Ardiya treatment plant.
• The Ardiya pumping station and the Ardiya-Sulaibiya wastewater pipeline (24km, 3x DN1400) serve to convey the mechanically pre-treated wastewater to the treatment plant in Sulaibiya.
• Sulaibiya treatment plant with biological treatment plant, ultrafiltration and reversed osmosis, sludge treatment.

The Sulaibiya treatment plant is designed for a capacity of 600,000 m³/d wastewater. In the first realisation phase, the plant is constructed for a treatment capacity of 375,000 m³/d. This makes Sulaibiya WWTP the largest of its kind in the world.

About 85% of the treated wastewater can be re-used as product water, the remaining 15% is discharged into the gulf as concentrate.

In 2001 the Kuwaiti government commissioned a consortium headed by the Kuwaiti Kharafi group to carry out the BOT project, including financing, design, construction and operation of the facilities of the Sulaibiya Wastewater Treatment and Reclamation Project. The BOT contract is set to run for 30 years (construction period 3 years, operation 27 years).