of a particular aerator. An aeration system in this
range will provide oxygen transfer for an average
power cost. Insert the efficiency value desired for
the particular design.
The requirement to maintain a minimum dissolved
oxygen concentration of 0.5 mg/L should be omitted
if the designer has provided for an anoxic zone
within the reactor.
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The aeration/mixing system selected shall be based upon the following
process requirements:
a.
Actual Oxygen Requirement (AOR) [_____] kg oxygen per day lbs.
oxygen per day.
b.
Alpha Coefficient [_____].
c.
Beta Coefficient [0.95] [_____].
d.
Theta Coefficient [1.024] [_____].
e.
Wastewater temperature [20] [_____] degrees C [68] [_____] degrees
F.
The aeration/mixing system selected shall provide no less than [_____] mg
oxygen per joule lb. oxygen per hp-hr under standard (clean water)
conditions [and be capable of maintaining a dissolved oxygen concentration
of not less than [0.5] [_____] mg/L anywhere in the CLR]. The Contractor
shall provide factory test results for a similar treatment application and
configuration to substantiate the OTE.
1.3
SUBMITTALS
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NOTE: Submittals must be limited to those necessary
for adequate quality control. The importance of an
item in the project should be one of the primary
factors in determining if a submittal for the item
should be required.
A "G" following a submittal item indicates that the
submittal requires Government approval. Some
submittals are already marked with a "G". Only
delete an existing "G" if the submittal item is not
complex and can be reviewed through the Contractor's
Quality Control system. Only add a "G" if the
submittal is sufficiently important or complex in
context of the project.
For submittals requiring Government approval on Army
projects, a code of up to three characters within
the submittal tags may be used following the "G"
designation to indicate the approving authority.
Codes for Army projects using the Resident
Management System (RMS) are: "AE" for
Architect-Engineer; "DO" for District Office
(Engineering Division or other organization in the
SECTION 11391
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