AWWA MTC69771

This case study describes the Ulu Pandan NEWater Plant in Singapore. NEWater is a high-grade reclaimed water produced by further treating secondary treated effluent using a multi-stage (multiple barrier) water reclamation process involving micro/ultra membrane filtration, reverse osmosis and ultra-violet disinfection. Since 2003, NEWater has been used in Singapore for electronic microchip wafer fabrication, nonpotable applications in manufacturing processes, and air-conditioning cooling towers in commercial buildings. This use of NEWater has freed up a large amount of potable water for other purposes. Presently, a small percentage of the NEWater production is blended with reservoir water and then this blend undergoes additional water treatment for potable use. The Ulu Pandan NEWater Plant started operation in March 2007 and is currently the fourth and largest operational NEWater facility in Singapore. It has a production capacity of 39 million U.S. gallons per day (USmgd), or 148,000 cubic meters per day (m³/d), and was developed under a Design-Build-Own-Operate (DBOO) arrangement between PUB Singapore and Keppel Seghers NEWater Development Company Pte Ltd. MWH served as the Owner's (i.e. PUB's) representative for the development of the bid (tender) documents and evaluation of the bid (tender) submittals, in addition to other engineering and project management tasks. The following information is presented in this case study of the Ulu Pandan NEWater Plant: background and description; the DBOO delivery method and tender (bid) documents; process flow diagram and plant photographs; and, project timeline. Includes 10 references, figures.