Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System
Chapter NR 274 - Nonferrous metals manufacturing
Subchapter XXI - Primary Molybdenum and Rhenium
Section NR 274.212 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available
Except as provided in 40 C.F.R. ss. 125.30 to 125.32, any existing point source subject to this subchapter shall achieve the following effluent limitations representing the degree of effluent reduction attainable by application of BPT:
Table 21-1
Primary Molybdenum and Rhenium Molybdenum Sulfide Leachate
|
BPT Effluent Limitations |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/kg (pounds per million pounds) of molybdenum sulfide leached |
|
|
Arsenic |
0.968 |
0.431 |
|
Lead |
0.195 |
0.093 |
|
Nickel |
0.889 |
0.588 |
|
Selenium |
0.570 |
0.255 |
|
Ammonia (as N) |
61.720 |
27.130 |
|
Fluoride |
16.210 |
9.214 |
|
Total suspended solids |
18.980 |
9.029 |
|
pH |
(1) |
(1) |
(1) Within the range of 7.5 to 10.0 at all times.
Table 21-2
Primary Molybdenum and Rhenium Roaster Sulfur Dioxide Scrubber
|
BPT Effluent Limitations |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/kg (pounds per million pounds) of molybdenum sulfide roasted |
|
|
Arsenic |
3.509 |
1.561 |
|
Lead |
0.705 |
0.336 |
|
Nickel |
3.224 |
2.133 |
|
Selenium |
2.065 |
0.924 |
|
Ammonia (as N) |
223.800 |
98.390 |
|
Fluoride |
58.770 |
33.410 |
|
Total suspended solids |
68.840 |
32.740 |
|
pH |
(1) |
(1) |
(1) Within the range of 7.5 to 10.0 at all times.
Table 21-3
Primary Molybdenum and Rhenium Molybdic Oxide Leachate
|
BPT Effluent Limitations |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/kg (pounds per million pounds) of molybdenum contained in molybdic oxide leachate |
|
|
Arsenic |
24.210 |
10.770 |
|
Lead |
4.865 |
2.317 |
|
Nickel |
22.240 |
14.710 |
|
Selenium |
14.250 |
6.371 |
|
Ammonia (as N) |
1,544.000 |
678.800 |
|
Fluoride |
405.400 |
230.500 |
|
Total suspended solids |
474.900 |
225.900 |
|
pH |
(1) |
(1) |
(1) Within the range of 7.5 to 10.0 at all times.
Table 21-4
Primary Molybdenum and Rhenium Hydrogen Reduction Furnace Scrubber
|
BPT Effluent Limitations |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/kg (pounds per million pounds) of molybdenum metal powder produced |
|
|
Arsenic |
47.860 |
21.300 |
|
Lead |
9.617 |
4.580 |
|
Nickel |
43.970 |
29.080 |
|
Selenium |
28.170 |
12.600 |
|
Ammonia (as N) |
3,052.000 |
1,342.000 |
|
Fluoride |
801.400 |
455.700 |
|
Total suspended solids |
938.800 |
446.500 |
|
pH |
(1) |
(1) |
(1) Within the range of 7.5 to 10.0 at all times.
Table 21-5
Primary Molybdenum and Rhenium Depleted Rhenium Scrubbing Solution
|
BPT Effluent Limitations |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/kg (pounds per million pounds) of molybdenum sulfide roasted |
|
|
Arsenic |
1.497 |
0.666 |
|
Lead |
0.301 |
0.143 |
|
Nickel |
1.375 |
0.909 |
|
Selenium |
0.881 |
0.394 |
|
Ammonia (as N) |
95.440 |
41.960 |
|
Fluoride |
25.060 |
14.250 |
|
Total suspended solids |
29.360 |
13.960 |
|
pH |
(1) |
(1) |
(1) Within the range of 7.5 to 10.0 at all times.
