Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System
Chapter NR 274 - Nonferrous metals manufacturing
Subchapter XXIII - Primary Nickel and Cobalt
Section NR 274.233 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable
Except as provided in 40 CFR 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 BAT:
Table 23-5
Primary Nickel and Cobalt Raw Material Dust Control
|
BAT Effluent Limitations |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/kg (pounds per million pounds) of copper, nickel, and cobalt in crushed raw material |
|
|
Copper |
0.099 |
0.047 |
|
Nickel |
0.042 |
0.028 |
|
Ammonia (as N) |
10.260 |
4.512 |
|
Cobalt |
0.011 |
0.005 |
Table 23-6
Primary Nickel and Cobalt Nickel Wash Water
|
BAT Effluent Limitations |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/kg (pounds per million pounds) of nickel powder washed |
|
|
Copper |
0.043 |
0.021 |
|
Nickel |
0.019 |
0.013 |
|
Ammonia (as N) |
4.515 |
1.985 |
|
Cobalt |
0.005 |
0.002 |
Table 23-7
Primary Nickel and Cobalt Nickel Reduction Decant
|
BAT Effluent Limitations |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/kg (pounds per million pounds) of nickel produced |
|
|
Copper |
16.250 |
7.744 |
|
Nickel |
6.982 |
4.697 |
|
Ammonia (as N) |
1,692.000 |
743.900 |
|
Cobalt |
1.777 |
0.889 |
Table 23-8
Primary Nickel and Cobalt Cobalt Reduction Decant
|
BAT Effluent Limitations |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/kg (pounds per million pounds) of cobalt produced |
|
|
Copper |
27.390 |
13.050 |
|
Nickel |
11.770 |
7.917 |
|
Ammonia (as N) |
2,852.000 |
1,254.000 |
|
Cobalt |
2.996 |
1.498 |
