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Pilot confirmation of enhanced water-treatment process

By Gerald Ondrey |

Teijin Ltd. (Tokyo, Japan; www.teijin.co.jp) announced today that a 10-month pilot test conducted with PUB, Singapore’s national water agency has proven that a Teijin-designed system based on HiPOx, an advanced oxidation process utilizing ozone and hydrogen peroxide, enhances the performance of reverse osmosis membrane and further improves the NEWater quality (NEWater is Singapore’s own brand of ultra-clean, high-grade reclaimed water) in terms of several water parameters. HiPOx is a registered trademark of APTwater Inc. Pleasant Hill, Calif.; www.aptwater.com) Two systems were utilized in the test: a controlled system using the conventional NEWater process combining ultrafiltration and reverse osmosis, and a HiPOx system added between the ultrafiltration and reverse osmosis membranes. Both systems were operated under the same conditions.   The test proved that in the HiPOx-supported system, the reverse osmosis membrane had 66% less blockage than in the controlled system. Moreover, following the reverse osmosis stage, not only was the quality of the product water further improved, the low concentration of pharmaceuticals and personal care products, endocrine-disrupting compounds and other pollutants in residual concentrate…
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