Wis. Admin. Code NR § 273.092

Current through May 28, 2024
Section NR 273.092 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available

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 BPT:

Table 9-1

Zirconium-Hafnium

Extrusion Press Hydraulic Fluid Leakage

BPT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/off-kg (pounds per million off-pounds) of zirconium-hafnium extruded

Chromium

0.104

0.043

Cyanide

0.069

0.029

Nickel

0.455

0.301

Ammonia

31.6

13.9

Fluoride

14.1

6.26

Oil and grease

4.74

2.85

Total suspended solids

9.72

4.62

pH

(1)

(1)

(1) Within the range of 7.5 to 10.0 at all times

Table 9-2

Zirconium-Hafnium

Heat Treatment Contact Cooling Water

BPT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/off-kg (pounds per million off-pounds) of zirconium-hafnium heat treated

Chromium

0.151

0.062

Cyanide

0.100

0.041

Nickel

0.659

0.436

Ammonia

45.7

20.1

Fluoride

20.4

9.06

Oil and grease

6.86

4.12

Total suspended solids

14.1

6.69

pH

(1)

(1)

(1) Within the range of 7.5 to 10.0 at all times

Table 9-3

Zirconium-Hafnium

Surface Treatment Spent Baths

BPT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/off-kg (pounds per million off-pounds) of zirconium-hafnium surface treated

Chromium

0.150

0.061

Cyanide

0.099

0.041

Nickel

0.653

0.432

Ammonia

45.3

20

Fluoride

20.3

8.98

Oil and grease

6.80

4.08

Total suspended solids

14

6.63

pH

(1)

(1)

(1) Within the range of 7.5 to 10.0 at all times

Table 9-4

Zirconium-Hafnium

Surface Treatment Rinse

BPT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/off-kg (pounds per million off-pounds) of zirconium-hafnium alkaline cleaned

Chromium

3.91

1.60

Cyanide

2.58

1.07

Nickel

17.1

11.3

Ammonia

1,190

521

Fluoride

529

235

Oil and grease

178

107

Total suspended solids

364

173

pH

(1)

(1)

(1) Within the range of 7.5 to 10.0 at all times

Table 9-5

Zirconium-Hafnium

Alkaline Cleaning Spent Baths

BPT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/off-kg (pounds per million off-pounds) of zirconium-hafnium alkaline cleaned

Chromium

0.704

0.288

Cyanide

0.464

0.192

Nickel

3.07

2.03

Ammonia

214

93.8

Fluoride

95.2

42.3

Oil and grease

32

19.2

Total suspended solids

65.6

31.2

pH

(1)

(1)

(1) Within the range of 7.5 to 10.0 at all times

Table 9-6

Zirconium-Hafnium

Alkaline Cleaning Rinse

BPT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/off-kg (pounds per million off-pounds) of zirconium-hafnium alkaline cleaned

Chromium

13.8

5.65

Cyanide

9.11

3.77

Nickel

60.3

39.9

Ammonia

4,190

1,840

Fluoride

1,870

829

Oil and grease

628

377

Total suspended solids

1,290

613

pH

(1)

(1)

(1) Within the range of 7.5 to 10.0 at all times

Table 9-7

Zirconium-Hafnium

Sawing or Grinding Spent Emulsions

BPT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/off-kg (pounds per million off-pounds) of zirconium-hafnium sawed or ground with emulsions

Chromium

0.124

0.051

Cyanide

0.082

0.034

Nickel

0.540

0.357

Ammonia

37.5

16.5

Fluoride

16.7

7.42

Oil and grease

5.62

3.37

Total suspended solids

11.5

5.48

pH

(1)

(1)

(1) Within the range of 7.5 to 10.0 at all times

Table 9-8

Zirconium-Hafnium

Molten Salt Rinse

BPT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/off-kg (pounds per million off-pounds) of zirconium-hafnium treated with molten salt

Chromium

3.33

1.360

Cyanide

2.20

0.907

Nickel

14.5

9.60

Ammonia

1,010

443

Fluoride

450

200

Oil and grease

151

90.7

Total suspended solids

310

148

pH

(1)

(1)

(1) Within the range of 7.5 to 10.0 at all times

Table 9-9

Zirconium-Hafnium

Sawing or Grinding Contact Cooling Water

BPT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/off-kg (pounds per million off-pounds) of zirconium-hafnium sawed or ground with contact cooling water

Chromium

0.142

0.058

Cyanide

0.093

0.039

Nickel

0.617

0.408

Ammonia

42.8

18.8

Fluoride

6.42

8.48

Oil and grease

13.2

3.85

Total suspended solids

9.72

6.26

pH

(1)

(1)

(1) Within the range of 7.5 to 10.0 at all times

Table 9-10

Zirconium-Hafnium

Sawing or Grinding Rinse

BPT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/off-kg (pounds per million off-pounds) of sawed or ground zirconium-hafnium rinsed

Chromium

0.792

0.324

Cyanide

0.522

0.216

Nickel

3.46

2.29

Ammonia

240

106

Fluoride

107

47.5

Oil and grease

36

21.6

Total suspended solids

73.8

35.1

pH

(1)

(1)

(1) Within the range of 7.5 to 10.0 at all times

Table 9-11

Zirconium-Hafnium

Inspection and Testing Wastewater

BPT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/off-kg (pounds per million off-pounds) of zirconium-hafnium tested

Chromium

0.007

0.003

Cyanide

0.005

0.002

Nickel

0.030

0.020

Ammonia

2.06

0.903

Fluoride

0.917

0.407

Oil and grease

0.308

0.185

Total suspended solids

0.632

0.301

pH

(1)

(1)

(1) Within the range of 7.5 to 10.0 at all times

Wis. Admin. Code Department of Natural Resources § NR 273.092

Cr. Register, September, 1990, No. 417, eff. 10-1-90.