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The project enhances Singapore’s water sustainability, and boosts PUB’s capability to reclaim, and recycle used water.

Singapore: Xylem Inc., a leading global water technology company, has announced its appointment by Koh Brothers Building & Civil Engineering Pte Ltd, a subsidiary of SGX Catalist-listed sustainable engineering solutions provider, Koh Brothers Eco Engineering Ltd., to supply biological aeration diffuser systems to the upcoming Tuas Water Reclamation Plant in Singapore.

Franz Cerwinka, Senior Vice President and President, Xylem Emerging Markets, said, “We’re delighted to be partnering with Koh Brothers and providing our technologies for the Tuas Water Reclamation Plant. Singapore is a world leader in building technologically advanced water systems, and we’re proud of our role in helping Singapore reclaim and recycle water in a sustainable way.”

As part of the project, Xylem will design and supply over 19,000 units of its Sanitaire ceramic disc diffuser systems to the Tuas facility, for treating non-domestic used water that will subsequently be reused by industries.

Choo Siew Meng, Deputy Chairman of Koh Brothers Building & Civil Engineering, said, “We were impressed by the Sanitaire disc diffusers’ track record for high aeration density and deep tank installations. What’s also valuable is the peace of mind that the equipment offers with its durability and reliability. Furthermore, Xylem’s entire team has been proactively engaging us and providing the necessary technical support from the start.”

The Tuas Water Reclamation Plant is part of PUB, Singapore’s National Water Agency’s Deep Tunnel Sewerage System Phase 2 (DTSS2) project, and will be the world’s largest industrial used water treatment facility that features ceramic membrane technology when it is completed in 2026. Capable of treating 75,000m3 of used water daily*, the plant will enhance Singapore’s water sustainability by boosting PUB’s capability to reclaim and recycle used water.

Given its durability, the ceramic disc diffuser requires minimum effort from users, as it enables easy maintenance and features a long service life, which typically spans 20 or more years. Sanitaire ceramic discs are resilient against chemical damage, rendering them suitable for biological aeration of challenging, non-domestic used water. By providing a continuous supply of oxygen during the treatment process, the diffusers support bacteria growth and activity, which then facilitates the breakdown and removal of organic matter in the water. Sanitaire disc diffusers feature specialized compression molding that delivers high oxygen transfer efficiency at low operating pressures and promotes uniform airflow distribution. Collectively, this contributes to lower system head loss, energy consumption, and operating costs for the facility operator.

[*] There will be two Industrial Liquids Modules (ILM) at Tuas WRP with a combined daily treatment capacity of 150,000m3. The contract for installing ILM2 has yet to be tendered out by PUB.

Xylem (XYL) is a leading global water technology company committed to solving critical water and infrastructure challenges with innovation. Its 17,000 diverse employees delivered revenue of $5.2 billion in 2021. It is helping communities in more than 150 countries become water-secure.

Koh Brothers Group is the single largest shareholder of SGX Catalist-listed Koh Brothers Eco Engineering Limited (Koh Brothers Eco), a sustainable engineering solutions group that provides engineering, procurement, and construction services for water and wastewater treatment, hydro-engineering, bio-refinery, and bio-energy projects. Its subsidiary, Koh Brothers Building & Civil Engineering Pte. Ltd. (KBCE), has jointly clinched a S$668.2 million contract from PUB, Singapore’s National Water Agency, to construct the Influent Pumping Stations (“IPS”) at Tuas Water Reclamation Plant (TWRP). Koh Brothers Eco has further secured a S$200.7 million contract from PUB to carry out mechanical, electrical and instrumentation control and automation (MEICA) works for the first of two Industrial Liquids Modules (ILMs) at TWRP.

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