NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)
NEMA ICS 1
(2000) Industrial Control and Systems:
General Requirements
NEMA MG 1
(2003; R 2004) Motors and Generators
THE SOCIETY FOR PROTECTIVE COATINGS (SSPC)
SSPC PS 13.01
(1982; R 2000) Epoxy-Polyamide Painting
System
SSPC SP 6
(2000) Commercial Blast Cleaning
1.2
SYSTEM DESCRIPTION
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NOTE: A continuous loop reactor or oxidation ditch
utilizes biological action to degrade organics in
the wastewater. Consideration should be given to
wastewaters from industrial facilities to ensure
there are no components detrimental to
microorganisms. In addition, Army facilities
utilizing continuous loop reactors should include
pretreatment equipment such as bar screens,
comminuters and a grit chamber as required by the
process conditions. Final clarification, sludge
handling and disinfection equipment is also
generally required. These and other possible
components of the complete treatment system guide
are not covered under this section.
As required for military construction, only sprayed
concrete (shotcrete) or placed reinforced concrete
will be acceptable for the basin construction. Clay
lined or synthetic membrane lined basins (even those
protected from erosion) are not acceptable.
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The work required by this section consists of furnishing and installing a
continuous loop reactor (CLR). The system shall be a modified form of the
activated sludge process and classified as an extended aeration system.
The basin shall be an [earthen channel with an impervious sprayed concrete
surface] [reinforced concrete structure], constructed at the depth and
configuration indicated. The basin shall include all aeration/mixing
equipment, [piping,] [pumps,] [baffles,] [weirs] and [turning walls]
necessary for proper performance and operation.
1.2.1
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NOTE: Some states and regulatory agencies require a
minimum detention time of 24 hours. Check the
governing regulations for activated sludge/extended
aeration processes for the project location.
Insert average daily and peak daily flow rates and
the required BOD5 removal efficiency. Typically,
90-95 percent removal can be achieved in a
SECTION 11391
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