MIL-HDBK-1164
Table 9
Water Treatment Plant Residue Disposal Summary
Quantities and
Disposal Possibilities
Type of Waste
Characteristics
Treatment Required
None.
Return to watercourse if
Screenings
Vary widely; evaluate
quantities are small.
particular water source;
check other plants using
Truck to landfill along with
same water source or
other plant solid waste.
other similar plants.
Investigate disposal with
wastewater treatment
plant screenings.
Presedimentation
Vary widely; evaluate
Dewatering in lagoon,
Dredging or draglining
sludges
particular water source;
sand drying bed, or
and hauling to landfill;
check other plants using
mechanical unit may be
multiple, drainage basins
same water source or
required.
make cleaning easier.
other similar plants.
Chemical
Composed of raw water
Gravity thickening is
Send concentrated sludge
clarification
impurities and coagulation
often desir-able,
or continuously withdrawn
sludges
chemicals.
recycling supernatant to
sludge to wastewater
Solids content - 0.1% to
plant influent. (3)
treatment plant.(1)
2%; 75-90% of total is
Sludge concentrations
Haul dried sludge to
suspended; 20-40% of
of 0.5-1.0% can be
landfill
total is volatile.
obtained.
Dry unit weight
3
75-95 lbs/ft .
In addition to gravity
Gelatinous.
thickening, dewatering
processes may also be
used:
Drying beds.
Freeze/thaw
treatment
processes are
effective for
alum sludge
dewatering but
expensive except
in climates where
sludges can be
lagooned and frozen
naturally.
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