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

Current through June 24, 2024
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.