| Subject |
Two-pass Seawater Nanofiltration at Long Beach, US |
Date |
28 SEP 2005 |
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| Woongjin Chemical developed and launched the NF membrane NE 8040-90S for seawater desalination. The new product is designed to fit double pass NF seawater desalination process and is scheduled to supply to the demo plant for Long Beach Water Department in USA. Related information was published in the September 26th issue of Water Desalination Report. |
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Original Manuscript - Water Desalination Report, 41 (40), 26 September, 2005:
LONG BEACH TWO-PASS SEAWATER NF
Long Beach Water Department (LBWD) is set to start up a 300,000 gpd (1135 m3/d) seawater desalination plant using a two-pass nanofiltration technology at a 30th September ceremony at the Haynes Generating Station in Long Beach, California.
LBWD deputy general manager Robert Cheng told WDR that the initial test period was set for 18-months, but a grant received as part of California Proposition 50 will allow up to 12 months of additional testing to evaluate pretreatment alternatives.
The NF/NF arrangement is expected to reduce desalination system energy consumption by lowering the overall operating pressures to 550 psi (38 bar) in the first stage and 250 psi (17.5 bar) in the second stage.
The plant will initially demonstrate the process performance using Filmtec’s NF90 membrane alongside a conventional Hydranautics SWRO membrane.
After approximately six months of testing, the plant will be outfitted with Woongjin Chemical's newly developed NE8040-90S NF membranes.
This represents an important opportunity for Woongjin Chemical to introduce their membrane products to the US market. On a separate note, Woongjin Chemical recently reported the development of a SWRO membrane with a 99.75% NaCl rejection, and 96% boron rejection at pH 8.0. |
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