IMPORTANT NOTICE

The material presented in this publication has been prepared in accordance with generally recog-

nized engineering principles and practices and is for general information only. This information

IMPORTANT NOTICE
The material presented in this publication has been prepared in accordance with generally recog-
nized engineering principles and practices and is for general information only. This information
should not be used without first securing competent advice with respect to its suitability for any
general or specific application.
The contents of this publication are not intended to be a standard of the Water Environment
 Federation (WEF) and are not intended for use as a reference in purchase specifications,
 contracts, regulations, statutes, or any other legal document.
No reference made in this publication to any specific method, product, process, or service con-
stitutes or implies an endorsement, recommendation, or warranty thereof by WEF.
WEF makes no representation or warranty of any kind, whether expressed or implied, concern-
ing the accuracy, product, or process discussed in this publication and assumes no liability.
Anyone using this information assumes all liability arising from such use, including but not
 limited to infringement of any patent or patents.
Wastewater Treatment Plant Design Handbook
Copyright  2012 by the Water Environment Federation. All Rights Reserved.
Permission to copy must be obtained from WEF.
Water Environment Research, WEF, and WEFTEC are registered trademarks of the
Water Environment Federation.
ISBN 978-1-57278-271-6
About WEF
Formed in 1928, the Water Environment Federation (WEF) is a not-for-profit
technical and educational organization with members from varied disciplines
who work towards WEF's vision to preserve and enhance the global water
 environment.
For information on membership, publications, and conferences, contact
Water Environment Federation
601 Wythe Street
Alexandria, VA 22314-1994 USA
(703) 684-2400
http://www.wef.org

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