Inorganic phosphates have a long history of being effective corrosion inhibitors however, with the trend to lower phosphate levels in cooling water, a new set of operating guidelines are required to minimize the risk of scaling/deposition. This paper will explore the chemistry of this type of program and outline application criteria that should be used to govern the application, in order to balance corrosion and fouling issues. Cases studies will be used to highlight the primary conclusions.

Subject
Calcium phosphates, Water, Precipitation (solids), Phosphonates, Orthophosphate, Calcium, Cooling water treatment, Polymers, Phosphates, Towers, Corrosion protection, Deposit corrosion, Cooling water
Keywords:
microbiological fouling, phosphate, scaling
© 2004 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2004
Association for Materials Protection and Performance (AMPP)
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