Statutes, codes, and regulations
Wisconsin Administrative Code
Agency - Department of Natural ResourcesEnvironmental Protection - Wisconsin Pollutant Discharge Elimination SystemChapter NR 255 - Battery manufacturing
Subchapter VIII - Zinc Subcategory
Section NR 255.72 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable

Wis. Admin. Code Department of Natural Resources NR 255.72

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Section NR 255.72 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable
(1) Except as provided in 40 CFR 125.30 to 125.32, any existing source subject to this subchapter shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of BAT:

Table 125

Wet Amalgamated Powder Anodes

BAT

POLLUTANT OR

POLLUTANT PROPERTY

MAXIMUM FOR

ANY 1 DAY

MAXIMUM FOR

MONTHLY AVERAGE

Metric units -

mg/kg of zinc

English units -

lb/million lbs of zinc

Chromium

0.24

0.099

Mercury

0.14

0.056

Silver

0.23

0.093

Zinc

0.80

0.34

Manganese

0.37

0.16

Table 126

Gelled Amalgam Anodes

BAT

POLLUTANT OR

POLLUTANT PROPERTY

MAXIMUM FOR

ANY 1 DAY

MAXIMUM FOR

MONTHLY AVERAGE

Metric units -

mg/kg of zinc

English units -

lb/million lbs of zinc

Chromium

0.030

0.012

Mercury

0.017

0.007

Silver

0.028

0.012

Zinc

0.099

0.042

Manganese

0.046

0.020

Table 127

Zinc Oxide Formed Anodes

BAT

POLLUTANT OR

POLLUTANT PROPERTY

MAXIMUM FOR

ANY 1 DAY

MAXIMUM FOR

MONTHLY AVERAGE

Metric units -

mg/kg of zinc

English units -

lb/million lbs of zinc

Chromium

9.53

3.90

Mercury

5.42

2.17

Silver

8.89

3.68

Zinc

31.64

13.22

Manganese

14.74

6.28

Table 128

Electrodeposited Anodes

BAT

POLLUTANT OR

POLLUTANT PROPERTY

MAXIMUM FOR

ANY 1 DAY

MAXIMUM FOR

MONTHLY AVERAGE

Metric units -

mg/kg of zinc deposited

English units -

lb/million lbs of zinc deposited

Chromium

94.47

38.65

Mercury

53.68

21.47

Silver

88.03

36.50

Zinc

313.46

130.97

Manganese

146.00

62.26

Table 129

Silver Powder Formed Cathodes

BAT

POLLUTANT OR

POLLUTANT PROPERTY

MAXIMUM FOR

ANY 1 DAY

MAXIMUM FOR

MONTHLY AVERAGE

Metric units -

mg/kg of silver applied

English units -

lb/million lbs of silver applied

Chromium

13.07

5.35

Mercury

7.43

2.97

Silver

12.18

5.05

Zinc

43.36

18.12

Manganese

20.20

8.61

Table 130

Silver Oxide Powder Formed Cathodes

BAT

POLLUTANT OR POLLUTANT PROPERTY

MAXIMUM FOR ANY 1 DAY

MAXIMUM FOR MONTHLY AVERAGE

Metric units -

mg/kg of silver applied

English units -

lb/million lbs of silver applied

Chromium

8.73

3.57

Mercury

4.96

1.99

Silver

8.14

3.37

Zinc

28.96

12.11

Manganese

13.50

5.76

Table 131

Silver Peroxide Cathodes

BAT

POLLUTANT OR

POLLUTANT PROPERTY

MAXIMUM FOR

ANY 1 DAY

MAXIMUM FOR

MONTHLY AVERAGE

Metric units -

mg/kg of silver applied

English units -

lb/million lbs of silver applied

Chromium

2.09

0.87

Mercury

1.19

9.48

Silver

1.95

0.81

Zinc

6.95

2.90

Manganese

3.24

1.38

Table 132

Nickel Impregnated Cathodes

BAT

POLLUTANT OR

POLLUTANT PROPERTY

MAXIMUM FOR

ANY 1 DAY

MAXIMUM FOR

MONTHLY AVERAGE

Metric units -

mg/kg of nickel applied

English units -

lb/million lbs of nickel applied

Chromium

88.0

36.0

Mercury

50.0

20.0

Nickel

384.0

254.0

Silver

82.0

34.0

Zinc

292.0

122.0

Manganese

136.0

58.0

Table 133

Miscellaneous Wastewater Streams

BAT

POLLUTANT OR

POLLUTANT PROPERTY

MAXIMUM FOR

ANY 1 DAY

MAXIMUM FOR

MONTHLY AVERAGE

Metric units -

mg/kg of cells produced

English units -

lb/million lbs of cells produced

Chromium

0.57

0.23

Cyanide

0.38

0.16

Mercury

0.32

0.13

Nickel

2.48

1.64

Silver

0.53

0.22

Zinc

1.88

0.79

Manganese

0.88

0.37

Table 134

Silver Etch

BAT

POLLUTANT OR

POLLUTANT PROPERTY

MAXIMUM FOR

ANY 1 DAY

MAXIMUM FOR

MONTHLY AVERAGE

Metric units -mg/kg of silver processed

English units - lb/million lbs of silver processed

Chromium

3.27

1.34

Mercury

1.86

0.74

Silver

3.05

1.26

Zinc

10.86

4.54

Manganese

5.06

2.16

Table 135

Silver Peroxide Production

BAT

POLLUTANT OR

POLLUTANT PROPERTY

MAXIMUM FOR

ANY 1 DAY

MAXIMUM FOR

MONTHLY AVERAGE

Metric units - mg/kg of silver in silver peroxide produced

English units - lb/million lbs of silver in silver peroxide produced

Chromium

3.48

1.42

Mercury

1.96

0.79

Silver

3.24

1.34

Zinc

11.56

4.83

Manganese

5.36

2.29

Table 136

Silver Powder Production

BAT

POLLUTANT OR

MAXIMUM FOR

MAXIMUM FOR

POLLUTANT PROPERTY

ANY 1 DAY

MONTHLY AVERAGE

Metric units -mg/kg of silver powder produced

English units -lb/million lbs of silver powder produced

Chromium

1.41

0.58

Mercury

0.80

0.32

Silver

1.32

0.55

Zinc

4.69

1.96

Manganese

2.18

0.93

(2) There may be no discharge allowance for process wastewater pollutants from any battery manufacturing operation other than those battery manufacturing operations listed in tables 125 to 136.

Wis. Admin. Code Department of Natural Resources NR 255.72

Cr. Register, November, 1987, No. 383, eff. 12-1-87; correction in (1) made under s. 13.92(4) (b) 7, Stats., Register April 2013 No. 688.