Experimental test of TOYOBO membranes for seawater desalination at Las Palmas, Spain

CEDEX (Centro de Estudios y Experimentacion de Obras Publicas) and EMALSA (Empresa Mixta de Aguas de Las Palmas, S.A. ) had been performing experimental tests for seawater desalination at Las Palmas, Gran Canaria Is., Spain, using a TOYOBO hollow-fiber membrane. A Hollosep HM10255FI module made by TOYOBO is used in the largest desalination plants around the world, especially in the Middle East. CEDEX and EMALSA confirm that the Hollosep module can produce stable water production and high-quality water for long-term operation without any chemical cleanings during 4600 h operation thanks to the its high chlorine resistance and anti-biofouling tolerance.

1. Hollosep is a high chlorine resistance membrane which can present high quality and stable volume ratio of permeate water for a long time operation for RO desalination plants having open sea intake water. 2. Hollosep can perform long-term operation without chemical treatments due to CTA membrane material which has high chlorine tolerance. The Hollosep brings seawater desalination plant operation easily using CCI or ICI. Acknowledgments We express our appreciation to Mr. Jose Antonio Medina of CEDEX and Mr. Javier Alday Ansola of EMALSA, giving us the opportunity to test at Las Palmas-3. We also thank all the staff of EMALSA for their great help.