Press Information

PUB and Mitsubishi build demo-scale plant to test technologies for future Tuas Water Reclamation Plant

Public Utility Board
Mitsubishi Corporation
MiMitsubishi Heavy Industries Asia Pacific Pte. Ltd

Tokyo, 7 Sep 2015 - National water agency PUB is building a demonstration-scale Integrated Validation Plant to test the technologies that could potentially be implemented at the future Tuas Water Reclamation Plant (WRP). These technologies are aimed at enhancing cost savings and energy efficiency of the used water treatment process at Tuas WRP.

Slated for completion in February 2017, the demonstration plant will allow PUB to validate the efficacy of the new process innovations planned for the future Tuas WRP. The tender for the plant was awarded to Mitsubishi Corporation last month. Mitsubishi Heavy Industries Asia Pacific Pte Ltd (MHI-AP) has been contracted by Mitsubishi Corporation to undertake the construction of the plant.

Located within PUB's Ulu Pandan WRP, the demonstration plant with a capacity of 12,500 cubic meters a day will be designed to be a fully automated plant to reduce the manpower required to operate the plant. The demonstration plant will also serve as a training ground for the operators and to validate parameters for optimum used water treatment.

The future Tuas WRP will incorporate technologies to improve energy efficiency and manpower requirements. It is the key component of the Deep Tunnel Sewerage System (DTSS) Phase 2, a superhighway for the collection, treatment, disposal and reclamation of used water. Phase 2 of the DTSS will extend the system to cover the western parts of the island.

Harry Seah, Chief Technology Officer, PUB, said, "The treatment and subsequent reclamation of used water is a cornerstone in ensuring a sustainable supply of water for Singapore. The demonstration plant is a living model of the future Tuas WRP to allow us to test and validate the new technologies that will eventually be used at the Tuas WRP. These new and tested technologies will enable Tuas WRP to be more eco-friendly, produce less sludge and have the capability of producing more biogas for power, while consuming lesser energy than conventional plants."

MHI-AP and PUB signed a Memorandum of Understanding (MOU) during the Singapore International Water Week in 2012 which saw them collaborating on a test-bedding project to treat high strength industrial used water at Jurong WRP. MHI-AP will continue to cooperate with PUB on R&D projects for water sustainability.

MHI-AP will be working closely with Mitsubishi Corporation to provide engineering support from the construction to the commissioning and operational phase of the project. It will also receive support from MHI (Mitsubishi Heavy Industries, Ltd.) Technology & Innovation Headquarters and an MHI group company, Mitsubishi Heavy Industries Mechatronics Systems, Ltd. (MHI-MS).

With this project, MHI-AP will also continue to work to further sophisticate its water treatment/recycling technology so as to expand its presence in water treatment business markets.

About MHI Group

Mitsubishi Heavy Industries (MHI) Group is one of the world’s leading industrial groups, spanning energy, smart infrastructure, industrial machinery, aerospace and defense. MHI Group combines cutting-edge technology with deep experience to deliver innovative, integrated solutions that help to realize a carbon neutral world, improve the quality of life and ensure a safer world. For more information, please visit or follow our insights and stories on