Wisconsin Administrative Code › Department of Natural Resources › NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System › Chapter NR 274 - Nonferrous metals manufacturing › Subchapter XI - Primary Columbium-Tantalum › Section NR 274.113 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable

Current through June 24, 2024
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 11-12
Primary Columbium-Tantalum Concentrate Digestion Wet Air
					 Pollution Control
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of concentrate
								  digested
Lead
0.174
0.081
Zinc
0.635
0.261
Ammonia (as N)
82.910
36.450
Fluoride
21.770
12.440
Table 11-13
Primary Columbium-Tantalum Solvent Extraction
					 Raffinate
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per concentra
million pounds) of te digested
Lead
2.592
1.203
Zinc
9.442
3.888
Ammonia (as N)
1,233.000
542.500
Fluoride
324.000
185.100
Table 11-14
Primary Columbium-Tantalum Solvent Extraction Wet Air
					 Pollution Control
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of concentrate
								  digested
Lead
0.069
0.032
Zinc
0.251
0.103
Ammonia (as N)
32.790
14.420
Fluoride
8.610
4.920
Table 11-15
Primary Columbium-Tantalum Precipitation and
					 Filtration
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of concentrate
								  digested
Lead
3.833
1.780
Zinc
13.960
5.750
Ammonia (as N)
1,825.000
802.200
Fluoride
479.100
273.800
Table 11-16
Primary Columbium-Tantalum Precipitation and Filtration Wet
					 Air Pollution Control
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of concentrate
								  digested
Lead
1.778
0.826
Zinc
6.478
2.668
Ammonia (as N)
846.600
372.200
Fluoride
222.300
127.000
Table 11-17
Primary Columbium-Tantalum Tantalum Salt Drying
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of tantalum
								  salt dried
Lead
16.950
7.871
Zinc
61.750
25.430
Ammonia (as N)
8,070.000
3,548.000
Fluoride
2,119.000
1,211.000
Table 11-18
Primary Columbium-Tantalum Oxides Calcining Wet Air
					 Pollution Control
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of
								  columbium-tantalum oxide dried
Lead
1.076
0.500
Zinc
3.919
1.614
Ammonia (as N)
512.200
225.200
Fluoride
134.500
76.840
Table 11-19
Primary Columbium-Tantalum Reduction of Tantalum Salt to
					 Metal
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of tantalum
								  salt reduced
Lead
46.500
21.590
Zinc
169.400
69.750
Ammonia (as N)
22,140.000
9,732.000
Fluoride
5,813.000
3,322.000
Table 11-20
Primary Columbium-Tantalum Reduction of Tantalum Salt to
					 Metal Wet Air Pollution Control
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of tantalum
								  salt reduced
Lead
0.572
0.266
Zinc
2.084
0.858
Fluoride
71.510
40.860
Table 11-21
Primary Columbium-Tantalum Tantalum Powder Wash
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of tantalum
								  powder washed
Lead
5.721
2.656
Zinc
20.840
8.582
Ammonia (as N)
2,724.400
1,198.000
Fluoride
715.200
408.700
Table 11-22
Primary Columbium-Tantalum Consolidation and Casting
					 Contact Cooling
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of columbium or
								  tantalum cast or consolidated
Lead
0.000
0.000
Zinc
0.000
0.000
Ammonia (as N)
0.000
0.000
Fluoride
0.000
0.000