MIL-HDBK-1005/9A
2.5.7
Paint Shops.
The following special methods are
applicable.
2.5.7.1
Paint Stripping. Paint stripping operations are the
source of the most polluted and difficult to treat industrial
wastes at Navy installations. Most Navy paint stripping
operations use phenolic base strippers. The resulting
wastewaters can contain high concentrations of phenols and
substituted phenols, as well as chromate, hexavalent chrome, and
ferrocyanide. If treatment experience on similar wastes is not
available, conduct bench or pilot scale treatability studies.
To reduce pretreatment requirements, emphasize source control
measures.
a) Use gravity separator for control of paint solids
prior to discharge to industrial sewer (if available). Remove
paint solids periodically to offsite drying beds or containerize
for direct landfill disposal. Establish hazardous or
nonhazardous waste nature of solids by the toxicity
characteristic leaching procedure (TCLP) (refer to Title 40 CFR,
Part 261.24).
b) Use nonphenolic base strippers or dry stripping
methods where possible.
2.5.7.2
Paint Booths. Where wet-type booths are utilized,
water should be recirculated in a closed system provided with
solids removal facilities. When discharge is required, the flow
should be tested for TCLP and discharged accordingly. Solids
should be removed and disposed. Establish hazardous or
nonhazardous waste nature by TCLP method. The use of paper or
peel-off floor and wall coverings is recommended.
2.5.8
Fire Training Areas. Wastewater from fire training
areas contains unburned hydrocarbons, burn products, additives
(purple-K-powder, AFFF), and sludges. Where AFFF is used,
wastewater will have significant COD, TOC, BOD, and toxicity
levels. Flow and load equalization should be provided prior to
pretreatment or discharged to a POTW system. For AFFF
wastewater collection and pretreatment recommendations, see
Naval Civil Engineering Laboratory (NCEL) TM M-54-78-06,
Disposal of Wastewater Containing Aqueous Film Forming Foam
(AFFF) and MIL-HDBK-1027 series, Training Facilities.
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