Wisconsin Administrative Code › Department of Natural Resources › NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System › Chapter NR 274 - Nonferrous metals manufacturing › Subchapter II - Primary Aluminum Smelting › Section NR 274.023 - 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 2-2
Primary Aluminum Smelting Anode and Cathode Paste Plant
					 Wet Air Pollution Control
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of
								  paste
Benzo(a)pyrene
0.005
0.002
Antimony
0.263
0.117
Nickel
0.075
0.050
Aluminum
0.831
0.369
Fluoride
8.092
3.591
Table 2-3
Primary Aluminum Smelting Anode Contact Cooling and
					 Briquette Quenching
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of anodes
								  cast
Benzo(a)pyrene
0.007
0.003
Antimony
0.403
0.180
Nickel
0.115
0.077
Aluminum
1.277
0.566
Fluoride
12.440
5.518
Table 2-4
Primary Aluminum Smelting Anode Bake Plant Wet Air
					 Pollution Control Closed Top Ring Furnace
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg(pounds per 1,000,000 pounds) of anodes
								  baked
Benzo(a)pyrene
0.146
0.067
Antimony
8.346
3.719
Nickel
2.378
1.600
Aluminum
26.420
11.720
Fluoride
257.300
114.200
Table 2-5
Primary Aluminum Smelting
Anode Bake Plant Wet Air Pollution Control
Open Top Ring Furnace With Spray Tower
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per1,000,000 pounds) of anodes
								  baked
Benzo(a)pyrene
0.002
0.001
Antimony
0.097
0.043
Nickel
0.028
0.019
Aluminum
0.306
0.136
Fluoride
2.975
1.320
Table 2-6
Primary Aluminum Smelting
Anode Bake Plant Wet Air Pollution Control
Open Top Ring Furnace With Wet Electrostatic Precipitator
					 and Spray Tower
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of anodes
								  baked
Benzo(a)pyrene
0.025
0.011
Antimony
1.409
0.628
Nickel
0.402
0.270
Aluminum
4.461
1.979
Fluoride
43.440
19.270
Table 2-7
Primary Aluminum Smelting Anode Bake Plant Wet Air
					 Pollution Control Tunnel Kiln
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of anodes
								  baked
Benzo(a)pyrene
0.038
0.018
Antimony
2.197
0.979
Nickel
0.626
0.421
Aluminum
6.953
3.084
Fluoride
67.710
30.050
Table 2-8
Primary Aluminum Smelting
Cathode Reprocessing Operated With Dry Potline
Scrubbing and Not Commingled With Other Process or
					 Nonprocess Wastewaters
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of cryolite
								  recovered
Benzo(a)pyrene
1.181
0.547
Antimony
420.400
189.200
Cyanide
157.600
70.060
Nickel
80.570
35.030
Aluminum
273.200
122.600
Fluoride
29,430.000
13,310.000
Table 2-9
Primary Aluminum Smelting
Cathode Reprocessing Operated With Dry Potline Scrubbing
					 and Commingled With Other Process or Nonprocess Wastewaters
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of cryolite
								  recovered
Benzo(a)pyrene
1.181
0.547
Antimony
67.610
30.120
Cyanide
157.600
70.060
Nickel
19.270
12.960
Aluminum
214.000
94.930
Fluoride
2,084.000
924.800
Table 2-10
Primary Aluminum Smelting Cathode Reprocessing
Operated With Wet Potline Scrubbing
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of cryolite
								  recovered
Benzo(a)pyrene
0.000
Antimony
0.000
0.000
Cyanide
0.000
0.000
Nickel
0.000
0.000
Aluminum
0.000
0.000
Fluoride
0.000
0.000
Table 2-11
Primary Aluminum Smelting Potline Wet Air Pollution
Control Operated Without Cathode Reprocessing
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of
aluminum produced from electrolytic
reduction
Benzo(a)pyrene
0.028
0.013
Antimony
1.618
0.721
Nickel
0.461
0.310
Aluminum
5.120
2.271
Fluoride
49.860
22.130
Table 2-12
Primary Aluminum Smelting Potline Wet Air Pollution
Control Operated With Cathode Reprocessing and Not
Commingled With Other Process or Nonprocess Waters
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds)
of aluminum produced from electrolytic
reduction
Benzo(a)pyrene
0.028
0.013
Antimony
10.060
4.525
Cyanide
3.771
1.676
Nickel
1.928
0.838
Aluminum
6.537
2.933
Fluoride
703.900
318.500
Table 2-13
Primary Aluminum Smelting Potline Wet Air Pollution
Control Operated With Cathode Reprocessing and Commingled
					 With Other Process or Nonprocess Waters
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds)
of aluminum produced from electrolytic
reduction
Benzo(a)pyrene
0.028
0.013
Antimony
1.618
0.721
Cyanide
3.771
1.676
Nickel
0.461
0.310
Aluminum
5.120
2.271
Fluoride
49.860
22.130
Table 2-14
Primary Aluminum Smelting Potroom Wet Air Pollution
					 Control
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds)
of aluminum produced from electrolytic
reduction
Benzo(a)pyrene
0.056
0.026
Antimony
3.204
1.428
Nickel
0.913
0.614
Aluminum
10.140
4.499
Fluoride
98.770
43.830
Table 2-15
Primary Aluminum Smelting Potline Sulfur Dioxide Emissions
					 Wet Air Pollution Control
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds)
of aluminum produced from electrolytic
reduction
Benzo(a)pyrene
0.045
0.021
Antimony
2.588
1.153
Nickel
0.738
0.496
Aluminum
8.194
3.634
Fluoride
79.790
35.400
Table 2-16
Primary Aluminum Smelting Degassing Wet Air Pollution
					 Control
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds)
of aluminum produced from electrolytic
reduction
Benzo(a)pyrene
(1)
(1)
Antimony
5.036
2.244
Nickel
1.435
0.965
Aluminum
15.940
7.071
Fluoride
155.300
68.880
(1) This pollutant has no discharge allowance.
Table 2-17
Primary Aluminum Smelting Pot Repair and Pot
					 Soaking
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds)
of aluminum produced from electrolytic
reduction
Benzo(a)pyrene
0.000
Antimony
0.000
0.000
Nickel
0.000
0.000
Aluminum
0.000
0.000
Fluoride
0.000
0.000
Table 2-18
Primary Aluminum Smelting Direct Chill Casting
					 Contact
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds)
of aluminum produced from direct chill
casting
Benzo(a)pyrene
(1)
(1)
Antimony
2.565
1.143
Nickel
0.731
0.492
Aluminum
8.120
3.602
Fluoride
79.080
35.090
(1) This pollutant has no discharge allowance.
Table 2-19
Primary Aluminum Smelting Continuous Rod Casting Contact
					 Cooling
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of aluminum
								  produced from rod casting
Benzo(a)pyrene
(1)
(1)
Antimony
0.201
0.089
Nickel
0.057
0.038
Aluminum
0.636
0.282
Fluoride
6.188
2.746
(1) This pollutant has no discharge allowance.
Table 2-20
Primary Aluminum Smelting Stationary Casting or
					 Shot
Casting Contact Cooling
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds)
of aluminum produced from stationary
casting or shot casting
Benzo(a)pyrene
0.000
Antimony
0.000
0.000
Nickel
0.000
0.000
Aluminum
0.000
0.000