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Nitto Denko Group Wins Business Via Singaporean Contractor Big Membrane Order for Chinese Seawater Desalination Plant

2008.07.03

  Japan’s leading diversified materials manufacturer Nitto Denko Corporation (Nitto Denko) and its U.S. subsidiary Hydranautics (HY), hereafter collectively referred to as “Nitto Denko Group”, have landed a large-scale order for the Group’s “SWC5” seawater desalination membrane element, Nitto Denko announced today.

  The order for SWC5 destined for one of the largest Chinese desalination plants being planned in Tianjin, the third-largest Chinese city, was secured via Hyflux Ltd., a Singaporean contractor specializing in water treatment-related business.

  The reverse osmosis (RO) membrane element SWC5 demonstrating the world’s highest-level flow rate and high salt rejection, is already operating at numerous seawater desalination plants at many water-stressed parts of the world.

  In China, there are currently seawater desalination plants each with a water production capacity level of 10,000 ton/day, all using Nitto Denko Group’s RO membranes, at three locations including the city of Qingdao. The Tianjin plant is earmarked to be China’s first large-scale plant with a production capacity in the order of 100,000 ton/day.

  Nitto Denko Group now operates an RO membrane element assembly plant in the Songjiang district of Shanghai, China, and has sales and technical service sites at five locations in that country. The Group looks forward to keeping in close contact with its customers in order to meet the increasing demand for seawater desalination and wastewater treatment in China, and expand its share in that market.

Outline of the Order Received

1. Product: “SWC5” RO membrane elements for seawater desalination
2. Final Destination: Tianjin, China (via Hyflux Ltd. of Singapore)
3. Water Production
    Capacity of Plant: 100,000 ton/day
4. Contract Value: ¥700million
5. On-stream Date: Between late 2008 and 2009

SWC5

Special Features of SWC5

  A superior product demonstrating a high flow rate with high salt rejection, SWC5 received the prestigious “2007 Nihon Keizai Shimbun Award for Excellence”, which is the highest-ranked among the “Nikkei Superior Products and Services Awards” granted each year by Japan’s major economic paper “Nihon Keizai Shimbun”.

  Generally, flow rate and salt rejection in an RO membrane are in a mutual trade-off relationship. However, in SWC5’s case, high flow rate has been achieved without sacrificing salt rejection. With such a high flow rate (*), it is possible to achieve seawater desalination at a required operating pressure lower than the conventional level, thereby contributing to the economics of seawater desalination.

  Note (*): Under Nitto Denko’s evaluation criteria, SWC5 demonstrates salt rejection of 99.8% and flow rate of 34 cubic meter/day.

  With its mother plant at Nitto Denko’s Shiga Plant, Nitto Denko Group commands a top-class market share in the world for RO membranes by conducting production in a global tripolar setup consisting of Japan (Shiga), the U.S. (HY) and Shanghai, and operating a global sales and technical support network covering more than 20 locations around the world.

  The Group plans to actively expand its water treatment-related business by meeting increasing demand not only in China but also in the circum- Mediterranean area, the Middle East, Singapore and India, where water shortage is expected to worsen from now on.

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