Biwater system selected for Hong Kong boundary crossing facility

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The Biwater seawater system will ensure that all associated buildings are fully ventilated with water-cooled air conditioning units.

Seawater will be sourced from Urmston Road waters where it will be screened and disinfected before passing through an extensive system of seawater pumpsets and accompanying pipework, which will include penstocks, travelling bandscreens, and automatic backwash strainers. Biwater will also provide the low voltage power supply system and supervisory control and data acquisition (SCADA) system.

“This is a significant project for us, as it builds upon our successful track record of delivering bespoke seawater systems and pumping stations for the Hong Kong Government, which complements our more widely known capabilities in desalination and membrane treatment for water supply and reuse projects around the world,” said John Jennings, Biwater International Ltd’s regional director for Asia Pacific.

To reduce corrosion of the seawater system, Biwater will coat all equipment that is in contact with seawater with corrosion-resistant material or construct it of high grade stainless steel. Ductile iron pipes with cement mortar internal linings and vertical split casting seawater pumps with duplex stainless steel impellers will be used throughout the system.

The Hong Kong-Zhuhai-Macau bridge will be the region’s first major combined bridge and tunnel sea-crossing incorporating extensive infrastructure works and the creation of two artificial islands.