i.
Phosphate as PO4_____________________
j.
Silica as SiO4_______________________
k.
Nitrates as NO3______________________
l.
Iron as Fe______________________
m.
Free carbon dioxide as CO2______________________
n.
Total dissolved solids_______________________
o.
Suspended solids______________________
Raw water shall be delivered to the plant [from the water distribution
system of the [_____]] [from [_____]] at a normal pressure of [_____] kPa
(gage) psig measured at the meter to the plant. See NAVFAC MO 225 for
additional guidance on boiler water concentration limits.
2.4.5.2
Water Softener
Equipment shall be of the type, size, and arrangement indicated. When
operating [under the indicated design conditions] [with an inlet water flow
of [_____] liters per second gpm] effluent analysis shall be as follows:
a.
Total hardness as CaCO3 less than [_____] Mg/liter
[b.
pH [_____] to [_____]
c.
Total dissolved solids less than [_____] Mg/liter
d.
[_____]]
(1) Zeolite Water Softener: Conform to WQA S-100 and shall have
[automatic] [manual] controls. The softener(s) shall be equipped
for [a sodium cycle] [a hydrogen cycle] [the type of cycle
necessary to provide the treated water analysis specified above].
[Each softener tank shall be provided an operating valve to permit
the regeneration of one tank while the other is in service.]
(2) Lime Soda Softener:
Conform to MIL-W-17122 for the type
indicated.
(3) Ion Exchange Softener:
Refer to NAVFAC MO 225 for additional
information.
2.4.6
Pressure Filter
Provide [a] pressure filters of the type and arrangement indicated and with
[manual] [automatic] controls. The filter shall conform to FS WW-F-2849.
Performance shall be as specified in FS WW-F-2849with raw water analysis as
specified herein, and operating conditions as indicated. Filter shall be
equipped to operate properly for not less than 2 days without operator
attention to renew or regenerate filter coatings, chemicals, or other
filter media.
SECTION 15516N
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