MIL-HDBK-1005/16
a)
Using detergents to clean up work areas increases
emulsification and inhibits gravity oil/water separation. Use of
high-pressure water also causes emulsification but is generally
less detrimental to oil/water separation than the use of
detergents.
b)
Use of dry absorbents should be considered to
minimize the amount of oils reaching sewers. Dry absorbents may
be collected and disposed of with solid waste materials. If
possible, wet processes should be replaced with dry processes,
and floor drains should be plugged.
c)
Implementation of point source controls may
eliminate or reduce the wastewater volume and contaminant
concentrations. For example, used oils may be segregated for
disposal or reuse rather than allowing them to enter the
wastewater stream. Implementing point source controls may also
be more economical than providing a wastewater treatment system.
Point source control techniques include process change or
modification, material recovery, material substitution,
wastewater segregation, and water reuse/recycling.
d)
Consider changing the point of discharge to
negotiate less stringent requirements and to protect sensitive
environmental areas. For example, it may be practical to reroute
a stormwater permitted outfall to a sanitary indirect discharge
when the stormwater flows are low and the permitted stormwater
discharge limits are overly restrictive. Extraneous stormwater
should be excluded from sanitary systems.
e)
The stormwater pollution prevention plan should
implement best management practices which will minimize or
eliminate the need for oil water separators in most instances.
f)
The formation of oil emulsions should be minimized
and emulsions should be segregated for special treatment whenever
possible. Emulsions are usually complex, and bench or pilot
plant testing is generally necessary to determine an effective
method for emulsion breaking.
g)
Current process operating practices should be
investigated to determine if good housekeeping practices are
employed and if changes can be made to reduce waste materials or
use of excess water. In many cases, proper attention to control
of operations can greatly reduce the amount of soluble oil
requiring treatment. Minimizing leaks, avoiding spills, using
69
Previous Page
