Table 15 (Continued)
Chemical-Specific Feeding Recommendations
Feeding Recommendations
Chemical-to-
Suitable
Common Name/
Best
Water Ratio for
Types
Accessory
Handling
Formula
Feeding
Continuous
of
Equipment
Materials for
1
Solutions2
Use
Form
Dissolving
Feeders
Required
Granular or
Dry 0.5 lb/gal
Gravimetric
SODIUM ALUMINATE:
Hopper agitators
Iron, steel,
Soln. dilute as L-I-W
soln. as
for dry form
rubber, 316
Na2Al2O4, anhy.
Volumetric
received
desired
st. s.,
(soda alum)
Helix
Std. grade
Penton,
Ratio Na2O/Al2O3
Universal
produces sludge
concrete,
1/1 or 1.15/1 (high
Solution
on dissolving
Hypalon
purity)
Rotodip
Also Na2A12O43H2O
Diaphragm pump
hydrated form
Plunger pump
Coagulation
Boiler H2O treatment
Granules or
0.3 lb/gal
Gravimetric
SODIUM BICARBONATE:
Hopper agitators
Iron & steel
L-I-W
powder plus TCP
and non-flood
(dilute
NaHCO3 (baking soda)
Belt
(0.4%)
rotor for powder,
solns.:
Activation of silica
Volumetric
if large storage
caution),
pH adjustment
Helix
hopper
rubber, Saran,
Universal
st. steel,
Solution
Hypalon, Tyril
Rotodip
Diaphragm pump
Plunger pump
SODIUM BISULFITE,
Hopper agitators
Glass, carp.
Crystals (do not
0.5 lb/gal
Gravimetric
L-I-W
for powdered
20 ss,
let set)
ANHYDROUS:
Volumetric
grades
PVC-1, Penton,
Storage
Na2S2O5 (NaHSO3)
Helix
difficult
Vent dissolver to
Uscolite,
(Sodium pyrosulfite,
316 st., FRP3,
Universal
outside
sodium meta-bisulfite)
Solution
Tyril, Hypalon
Dechlorination: about
Rotodip
Diaphragm pump
1.4 ppm for each
Plunger pump
ppm C12
Bal. diaphragm
Reducing agent in waste
pump
treatment
(as Cr)
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