(2 TO 7% OIL)
Figure 6-2. Emulsified oil removal by cracking and chemical coagulation.
(c) Application to military wastes. Due to
corrosion-resistant to prevent leakage from corro-
the extreme need for providing a fail-safe system,
sion caused by high pressure injection of acids
deep well injection is an expensive undertaking.
and salts. Duplicate wells should be drilled if
Because of uncertainties with deep well opera-
there is no alternative treatment or holding
tions (well leaks or clogging), careful comparison
capacity in case the disposal well should fail. In
should be made of all other possible treatment
addition, a number of sample wells must be
alternatives prior to initiating a deep well system.
drilled and maintained in order to monitor any
Present U.S. EPA and Army policies discourage
leakage into ground water (72)(107). Trace leakage
deep well disposal. The U.S. EPA requires proof
may be impossible to identify.