disinfection system at the existing wastewater
treatment plant.
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The continuous flow of wastewater and disinfection shall be maintained
until the new system is tested, approved and fully operational. No
discharge of untreated wastewater, reduction in existing hydraulic capacity
or organic treatment capacity will be allowed.
1.10
EXTRA MATERIALS
Spare parts shall be new, exact replacements, and separately packaged.
Package shall have bill of materials with quantity, item description, and
part number. The following spare parts and safety equipment shall be
furnished:
a. One completely assembled lamp module.
b. Ten percent of the total number of the syatem lamps.
c. Five percent of the total number of the system ballasts.
d. Ten percent of the total number of the system lamp sleeves.
e. Ten sets of lamp end seals.
f. Ten sets of lamp socket connectors.
g. [Four] [_____] personnel safety shields which block out UV
wavelengths between 200 and 400 nm.
PART 2
PRODUCTS
2.1
DESIGN CONDITIONS
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NOTE: Determine or estimate plant flows, total
suspended solids (TSS), UV transmittance, and
influent microorganism count. A value for UV
transmittance must be determined from an independent
laboratory. Occasionally, a wastewater quality may
be encountered which exceeds the experience of
design engineers (e.g. due to an unfamiliar process
design, a familiar but poorly operated process, an
under-designed plant, an unusual influent to the
treatment plant, etc.). In these cases, a pilot
study should be conducted to provide information
required for design. Channels must be designed for
peak design flow.
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2.1.1
Effluent Characteristics
Ultraviolet equipment shall disinfect wastewater effluent with the
following characteristics:
a.
Peak flow, cubic meter per sec. (Mgd):
Initial [_____].
Design [_____].
b.
Average flow, cu. meter/sec. (Mgd):
Initial [_____].
Design [_____].
c.
Minimum flow, cu. meter/sec. (Mgd):
[_____].
d.
Total suspended solids (TSS), mg/L:
[_____].
SECTION 11376
Page 9
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