In the United States, sanitary sewage collection systems consist of one of the largest capital investments in the infrastructure. In 2001, Congress appropriated $1.35 billion for wastewater infrastructure improvements, but the actual need is estimated to be approximately 9 times this amount at $12 billion per year.

Corrosion and structural deterioration due to microbiologically influenced sulfate reduction and hydrogen sulfide gas oxidation to sulfuric acid are responsible for much of this expense. This paper explains the mechanism of this biologically induced corrosion, its consequence, and methods to mediate it.

Subject
Sulfur, Water, Materials, Piping, Acid attack, Sewage, Hydrogen attack, Acidity, Bacteria, Cement, Sewage systems, Concrete, Waste water
© 2003 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).
2003
Association for Materials Protection and Performance (AMPP)
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