Table 5-1.
Example of waste load reductions by in-plant control
In-plant
Flow
BOD Load
Description of
Reduction
Reduction
Control
Method
Percent
Percent
MGD
lb/day
Modification
6,510
11.7
Segregation and
0.4
Incineration of high
0.04
special disposal
strength organic streams
2.7
1.0
Wet scrubber replaced
0.30
560
with afterburner
Process modification
1.60
14.4
4,650
8.3
Repair and replacement of
process equipment
0.25
2.2
1,860
3.3
Unit shutdowns due to
the age of the process
or product*
Substitution
Use of raw materials
o
1.0
0
560
with less pollutant load
0.01
0.1
1.0
Recycling
Reprocessing of specific
560
wastestreams to recover
more product and concentrate
waste
Reduction
7.0
A number of small, varied
0.60
5.4
3,900
projects
Totals
25.2
2.8
18,600
33.3
*These were not caused by environmental considerations but they were a factor.
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