Classic water conditioning of large industrial cooling circuits requires a practical chemical approach to control corrosion, scaling, and fouling. One or more of these areas may be destabilized when a system experiences a change in its applied cooling water chemical treatment technology. When determining the consequences of alternative chemical water treatment programs, special attention to biofilm formation must be given, since this type of fouling represents the potential for subsequent microbiologically induced corrosion (MIC). During the evaluation stage, a fouling monitor can be used to assess the formation of a biofilm, to determine its effect on corrosion rates, and to evaluate treatment efficacy for the control of sessile microorganisms Such a model was used to develop a water treatment recommendation for a cooling system which will be required to convert to an alternative water treatment technology. This approach to MIC prevention can be applied to related systems which may be subject to underdeposit corrosion.

Subject
Corrosion prevention, Nonoxidizing biocides, Water, Corrosion rate, Biofilms, Cooling systems, Heat, Corrosion data, Cooling water, Cooling towers, Fouling, Microbiologically influenced corrosion, Water treatment facilities
Keywords:
MIC, cooling water conditioning, fouling monitor, biofilm, inhibition
© 1995 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).
1995
Association for Materials Protection and Performance (AMPP)
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