文档介绍：CECW-ET Department of the Army EM 1110-2-501
. Army Corps of Engineers
Engineer Manual Washington, DC 20314-1000 1 February 1999
1110-2-501
Design, Construction, and Operation
SMALL WASTEWATER SYSTEMS
Distribution Restriction Statement
Approved for public release; distribution is
unlimited.
DEPARTMENT OF THE ARMY EM 1110-2-501
. Army Corps of Engineers
CECW-ET Washington, DC 20314-1000
Manual
No. 1110-2-501 1 February 1999
Design, Construction, and Operation
SMALL WASTEWATER SYSTEMS
1. Purpose. This manual is intended to provide guidance and criteria for the design and selection of
small-scale wastewater treatment facilities. It provides both the information necessary to select, size, and
design such wastewater treatment unit processes, and guidance to generally available and accepted refer-
ences for such information. For the purpose of this manual, small-scale wastewater treatment systems are
those with average daily design flows less than 379 000 liters per day (L/d) or 100,000 gallons per day
(gal/d), including septic tanks for flows less than 18 900 L/d (5000 gal/d), small prefabricated or package
plants for flows between 18 900 L/d (5000 gal/d) and 190 000 L/d (50,000 gal/d), and larger prefabricated
treatment systems with capacities of no more than 379 000 L/d (100,000 gal/d).
2. Applicability. This manual applies to all mands having responsibility for civil works
projects.
3. Distribution Statement. Approved for public release; distribution is unlimited.
FOR MANDER:
ALBERT J. TI, JR.
Major General, USA
Chief of Staff
This manual supersedes EM 1110-2-501, Part 1, dated 29 September 1978; Part 2, dated 30 September
1980; and Part 3, dated 31 May 1983.
DEPARTMENT OF THE ARMY EM 1110-2-501
. Army Corps of Engineers
CECW-ET Washington, DC 20314-1000
Manual
No. 1110-2-501 1 February 1999
Design, Construction, and Operation
SMALL WASTEWATER SYSTEMS
Table of Contents
Subject Paragraph Page
Chapter