Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System
Chapter NR 255 - Battery manufacturing
Subchapter VIII - Zinc Subcategory
Section NR 255.71 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available
Current through August 26, 2024
(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 BPT:
Table 113
Wet Amalgamated Powder Anodes
BPT
|
POLLUTANT OR POLLUTANT PROPERTY |
MAXIMUM FOR ANY 1 DAY |
MAXIMUM FOR MONTHLY AVERAGE |
|
Metric units - |
mg/kg zinc |
|
|
English units - |
lb/million lbs of zinc |
|
|
Chromium |
1.67 |
0.68 |
|
Mercury |
0.95 |
0.38 |
|
Silver |
1.56 |
0.65 |
|
Zinc |
5.55 |
2.32 |
|
Manganese |
2.58 |
1.10 |
|
Oil and grease |
76.0 |
45.6 |
|
TSS |
155.8 |
74.1 |
|
pH |
(1) |
(1) |
1Within the range of 7.5 to 10.0 at all times.
Table 114
Gelled Amalgam Anodes
BPT
|
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 |
0.30 |
0.12 |
|
Mercury |
0.17 |
0.07 |
|
Silver |
0.28 |
0.12 |
|
Zinc |
0.99 |
0.42 |
|
Manganese |
0.46 |
0.20 |
|
Oil and grease |
13.6 |
8.16 |
|
TSS |
27.9 |
13.26 |
|
pH |
(1) |
(1) |
1Within the range of 7.5 to 10.0 at all times.
Table 115
Zinc Oxide, Formed Anodes
BPT
|
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 |
62.9 |
25.7 |
|
Mercury |
35.8 |
14.3 |
|
Silver |
58.7 |
24.3 |
|
Zinc |
208.8 |
87.2 |
|
Manganese |
97.2 |
41.5 |
|
Oil and grease |
2,860.0 |
1,716.0 |
|
TSS |
5,863.0 |
2,789.0 |
|
pH |
(1) |
(1) |
1Within the range of 7.5 to 10.0 at all times.
Table 116
Electrodeposited Anodes
BPT
|
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 |
1,404.0 |
574.0 |
|
Mercury |
798.0 |
319.0 |
|
Silver |
1,308.0 |
543.0 |
|
Zinc |
4,657.0 |
1,948.0 |
|
Manganese |
2,169.0 |
925.0 |
|
Oil and grease |
63,800.0 |
38,280.0 |
|
TSS |
130,700.0 |
62,210.0 |
|
pH |
(1) |
(1) |
1Within the range of 7.5 to 10.0 at all times.
Table 117
Silver Powder, Formed Cathodes
BPT
|
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 |
86.2 |
35.3 |
|
Mercury |
49.0 |
19.6 |
|
Silver |
80.4 |
33.3 |
|
Zinc |
286.2 |
119.6 |
|
Manganese |
133.3 |
56.8 |
|
Oil and grease |
3,920.0 |
2,350.0 |
|
TSS |
8,036.0 |
3,822.0 |
|
pH |
(1) |
(1) |
1Within the range of 7.5 to 10.0 at all times.
Table 118
Silver Oxide Powder, Formed Cathodes
BPT
|
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 |
57.7 |
23.6 |
|
Mercury |
32.8 |
13.1 |
|
Silver |
53.7 |
22.3 |
|
Zinc |
191.3 |
79.9 |
|
Manganese |
89.1 |
38.0 |
|
Oil and grease |
2,620.0 |
1,570.0 |
|
TSS |
5,370.0 |
2,554.0 |
|
pH |
(1) |
(1) |
1Within the range of 7.5 to 10.0 at all times.
Table 119
Silver Peroxide Cathodes
BPT
|
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 |
13.8 |
5.65 |
|
Mercury |
7.85 |
3.14 |
|
Silver |
12.9 |
5.34 |
|
Zinc |
45.8 |
19.2 |
|
Manganese |
21.4 |
9.11 |
|
Oil and grease |
628.0 |
377.0 |
|
TSS |
1,287.0 |
612.0 |
|
pH |
(1) |
(1) |
1Within the range of 7.5 to 10.0 at all times.
Table 120
Nickel Impregnated Cathodes
BPT
|
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 |
721.6 |
295.2 |
|
Mercury |
410.0 |
164.0 |
|
Nickel |
3,149.0 |
2,083.0 |
|
Silver |
672.4 |
279.0 |
|
Zinc |
2,394.4 |
1,000.4 |
|
Manganese |
1,115.2 |
475.6 |
|
Oil and grease |
32,800.0 |
19,680.0 |
|
TSS |
67,240.0 |
31,980.0 |
|
pH |
(1) |
(1) |
1Within the range of 7.5 to 10.0 at all times.
Table 121
Miscellaneous Wastewater Streams
BPT
|
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 |
3.85 |
1.58 |
|
Cyanide |
2.54 |
1.05 |
|
Mercury |
2.19 |
0.68 |
|
Nickel |
16.82 |
11.12 |
|
Silver |
3.59 |
1.49 |
|
Zinc |
12.79 |
5.34 |
|
Manganese |
5.96 |
2.54 |
|
Oil and grease |
175.20 |
105.12 |
|
TSS |
359.16 |
170.82 |
|
pH |
(1) |
(1) |
1Within the range of 7.5 to 10.0 at all times.
Table 122
Silver Etch
BPT
|
POLLUTANT OR |
MAXIMUM FOR |
MAXIMUM FOR |
|
POLLUTANT PROPERTY |
ANY 1 DAY |
MONTHLY AVERAGE |
|
Metric units - |
mg/kg of silver processed |
|
|
English units - |
lb/million lbs of silver processed |
|
|
Chromium |
21.6 |
8.84 |
|
Mercury |
12.3 |
4.91 |
|
Silver |
20.2 |
8.35 |
|
Zinc |
71.7 |
30.0 |
|
Manganese |
33.4 |
14.3 |
|
Oil and grease |
982.0 |
589.2 |
|
TSS |
2,013.1 |
957.5 |
|
pH |
(1) |
(1) |
1Within the range of 7.5 to 10.0 at all times.
Table 123
Silver Peroxide Production
BPT
|
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 |
23.0 |
9.40 |
|
Mercury |
13.1 |
5.22 |
|
Silver |
21.4 |
8.88 |
|
Zinc |
76.2 |
31.80 |
|
Manganese |
35.5 |
15.10 |
|
Oil and grease |
1,044.0 |
627.00 |
|
TSS |
2,140.0 |
1,018.00 |
|
pH |
(1) |
(1) |
1Within the range of 7.5 to 10.0 at all times.
Table 124
Silver Powder Production
BPT
|
POLLUTANT OR POLLUTANT PROPERTY |
MAXIMUM FOR ANY 1 DAY |
MAXIMUM FOR MONTHLY AVERAGE |
|
Metric units - mg/kg of silver powder produced |
||
|
English units - lb/million lbs of silver powder produced |
||
|
Chromium |
9.33 |
3.82 |
|
Mercury |
5.30 |
2.12 |
|
Silver |
8.69 |
3.61 |
|
Zinc |
30.95 |
12.93 |
|
Manganese |
14.42 |
6.15 |
|
Oil and grease |
424.0 |
254.40 |
|
TSS |
869.0 |
413.40 |
|
pH |
(1) |
(1) |
1Within the range of 7.5 to 10.0 at all times.
(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 113 to 124.
