Academic
Publications
CASE STUDY - KRANJI HIGH GRADE WATER RECLAMATION PLANT, SINGAPORE

CASE STUDY - KRANJI HIGH GRADE WATER RECLAMATION PLANT, SINGAPORE,M. Thompson,D. Powell

CASE STUDY - KRANJI HIGH GRADE WATER RECLAMATION PLANT, SINGAPORE  
BibTex | RIS | RefWorks Download
Increased water demand from population and economic growth, environmental needs, change in rainfall, flood contamination of good quality wate r and over abstraction of groundwater are all factors that continue to create water shortage problems. These changes combined with new legislation are encouraging the development of sustainable water resource strategies. Many national policies now include the promotion of wastewater reuse. This paper discusses the dual membrane treatment system installed at Kranji in the north of the Singapore Island, and in particular the microfiltration pretreatment as a practical and economical choice for reuse. Initially, the Kranji High Grade Water Reclamation Plant (HGWRP), or NEWater plant, will supply industry including the microelectronics industry, with a small amount supplied for indirect potable reuse. The Singapore Government intend to eventually supplement up to 2.5% of it's drinking water with NEWater from reuse plants like Kranji. 1.0 Project Background A joint venture between the Public Utilities Board (PUB) and the Ministry of the Environment (ENV) of Singapore initiated a Water Reclamation Study (NEWater Study) in 1998. The primary objective of the joint initiative was to determine the suitability of using NEWater as a source of raw water to supplement Singapore's water supply. NEWater is treated used water that has undergone stringent purification and treatment process using advanced dual-membrane (microfiltration and reverse osmosis) and ultraviolet technologies. NEWater could be mixed and blended with reservoir water and then undergo conventional water treatment to produce drinking water (a procedure known as Planned Indirect Potable Use or Planned IPU). The NEWater study included the design, construction and operation of a 10,000 m3/day advanced water reclamation plant using state of the art dual membrane (microfiltration and reverse osmosis) and ultraviolet technologies. This NEWater factory was built at the Bedok Water Reclamation plant and commenced operation in May 2000. PUB selected Memcor's proven CMF technology as the most viable microfiltration system available. An expert panel that consisted of both local and foreign experts in: engineering; biomedical science; chemistry and water technology was formed in January 1999, and oversaw the NEWater study. After evaluating plant performance and extensive testing of final water quality (including physical/chemical analyses; pesticide/herbicide analyses; radionuclides; synthetic and natural hormones and microbiological testing) for a period of 2 years, the expert panel concluded that: • NEWater is considered safe for potable use (and meets the latest requirements of the US EPA's National Primary and Secondary Drinking Water Standards and the WHO's Drinking Water guidelines; and • Singapore should adopt the approach of indirect potable reuse.
Cumulative Annual
View Publication
The following links allow you to view full publications. These links are maintained by other sources not affiliated with Microsoft Academic Search.