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Tue March 02 2021

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Singapore awards engineering contract for mega-sewer

4 Jun 14 Singapore’s national water agency, PUB, has appointed a joint venture between Black & Veatch and Aecom to provide engineering services for a scheme that includes more than 18 miles of tunnelling and a 7.5-mile outfall.

The joint venture team will work with PUB to shape the second phase of the Deep Tunnel Sewerage System (DTSS). DTSS Phase 2 will extend DTSS to the western side of Singapore through an 18.6-mile-long tunnel, nearly 44 miles of link sewers, the Tuas Water Reclamation Plant (WRP) and an estimated 7.5-mile deep-sea outfall. The overall DTSS will result in a 50% reduction in land taken by used-water infrastructure with three centralized collection and treatment points: Changi WRP in the east; Kranji WRP in the north; and Tuas WRP in the west.

“The project’s vision underlines PUB’s innovation and global leadership in sustainable water solutions,” said Cindy Wallis-Lage, president of Black & Veatch’s water business. “It is a privilege to team with Aecom and PUB in setting a new standard in reliable, flexible and energy-efficient infrastructure that promotes water sustainability for the future.”

“We have assembled a compelling joint venture team of world-class local and global experts, who look forward to delivering a sustainable infrastructure solution,” said Michael Burke, Aecom president and chief executive officer. “We are honoured to be a part of the DTSS project, which will enhance Singapore’s water sustainability and resilience — solidifying its place as a leader in the global water industry.”

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A water production facility will be integrated with the Tuas WRP and an integrated waste management facility will be co-located at the site. This offers potential opportunities to integrate used-water and solid-waste treatments to maximise energy and resource recovery.

The Black & Veatch and Aecom joint venture will conduct a feasibility study and preliminary design as part of the first stage of the project. As the lead consultant, the team will programme manage the delivery of DTSS Phase 2 in the second stage of the project. Supporting Black & Veatch and Aecom will be Ramboll.

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