Wis. Admin. Code NR § 274.023

Current through May 28, 2024
Section NR 274.023 - 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 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

Wis. Admin. Code Department of Natural Resources § NR 274.023

Cr. Register, March, 1991, No. 423, eff. 4-1-91.