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WHC-SD-W100-TI-003 Rev. 0
for radioactivity at-keylocations_and di-versioncapability is available to
prevent all but very low level contamination in the stream. There has been
and continues to be some light chemical contamination of the system at times,
making the waste stream hazardous. A waste minimization effort is presently
in place to reduce the overall volume by a factor of 5 to 10 by eliminating
cooling water and other large volume flows. However, this is expected to
increase chemical concentrations in the stream increasing the risk of it being
hazardous more of-the time. A LETF is planned that will use a ferrichydroxide-sulfide
flocculation water treatment method to remove the bulk of
--the chemical contaminants and any residual radionuclides that might be
present. This proposed facility has yet to define-exactl. whatvalume or
composition of mixed waste might be generated. However, ferric hydroxide is
unstable in air to decomposition to ferric oxide hydrate (rust). A surrogate
waste composition of ferric ( iron) oxide, sodium sulfide, polymer flock, and
trace chemicals was weighed, milled, and blended. The chemicals were all dry
(water free) so no drying was performed. There was a batch of ferrichydroxide-sulfide
flock produced, washed, dried, and milled. A sample of the
flock was submitted for analysis and two test cubes were made to verify the
ferric oxi-de surrogate mixture.
The actual ferric oxide mixture used is given below:
r'erric Oxide Sludge Mix
98.7% -
1.3% -
0.07%-
0.01%-
0.01%-
0.01%-
ferric oxide reagent
sodium sulfide
Polymer flock
mercury chloride
trichlorethylene
chromium oxide
ow-Level Mixed Waste Incinerator
---- -- - i'+=Lt^,^J -i-ncj nerator--or -siatfl ar--equipmert i s- pi afiReu' for future i nstal l ati on at
the WRAP facility. The primary waste generated by the incinerator is ash.
Tfie composition of the ash is very dependent upon the materials to be
processed. - Rubber products such as gloves have a high solids residue (>5%).
Plastic materials and resins have a very low residue content (