MIL-HDBK-1005/9A
c) Plant equipment should
be operated immediately
upon installation. Equipment should
not be allowed to sit idle
and deteriorate from lack of usage.
Equipment performance
should be in demonstrated compliance
with specifications and
testing procedures.
d) Operator work requirements should be minimized by
designing treatment chemicals in liquid form to be pumped, or in
powder form to be automatically fed.
e) Use of computer control systems with total manual
backup should be considered for larger installations.
f) After removing solids from the units, a steam
line/wand or air supply should be provided for cleaning filter
press gaskets and flanges.
g) Develop contingency plans for plant shutdown and
chemical spills and treatment process performance failure.
2.7.4
Equipment Selection.
The following points should be
considered:
a) For solids separation following chemical
precipitation (particularly plating waste), parallel plate or
tube separators should be evaluated. Manual or automatic means
of cleaning plugged plates or tubes must be provided.
b) Plate and frame filter presses have been
particularly successful in dewatering chemical sludges for
direct disposal and should be used unless special circumstances
dictate otherwise.
c) Electrically powered agitators are preferred over
air spargers.
d) Mixer shafts should be constructed of solid
corrosion-resistant materials rather than coated.
2.7.5
Material Selection. The most critical factors that
have caused unfavorable conditions at industrial waste
facilities operated by the Navy have been material selection and
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