MIL-HDBK-1005/9A
(4) Residuals. Oxidation can create precipitates
that must be separated by subsequent clarification and
filtration. Need for additional treatment should be determined
during bench testing study.
c) Process Control. Use electronic recorder-
controllers with self-cleaning probes for pH and ORP.
2.6.5.4
Activated Carbon. Table 9 presents additional
considerations for granular-activated carbon (GAC) which may be
used to provide effluent polishing following treatment of
specific industrial wastes.
a) GAC should be included in heavy metal waste
treatment facilities only as a standby treatment unit for use
during process upsets or outages for maintenance. GAC may be
required for polishing effluent prior to direct discharge under
a NPDES permit. It should not be required for continuous use as
pretreatment prior to discharge to a POTW.
GAC treatment economics dictate that precipitation,
flocculation, and filtration processes be upgraded and
controlled prior to installation of GAC columns.
b) Powdered-activated carbon (PAC) addition to
activated sludge systems should be considered for treatment of
wastewaters containing biorefractory organic compounds.
However, adsorption of these compounds to PAC and subsequent
discharge with waste-activated sludge may create a sludge that
is a hazardous waste.
2.6.5.5
Other Treatment Processes and Operations. Other
treatment processes that are applied to industrial wastes are
sedimentation, coagulation, and flotation. Sedimentation and
coagulation are discussed in MIL-HDBK-1005/8. Flotation for
oily waste treatment is discussed in Section 3.
2.6.6
Naval Aviation Depot (NADEP)
2.6.6.1
Operations. Typical operations at NADEP include metal
surface cleaning, metal fabricating, metal finishing, metal
plating, and aircraft paint stripping and spraying.
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