Wis. Admin. Code Department of Natural Resources NR 273.102
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 10-1
Metal Powders
Metal Powder Production Atomization 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 powder wet atomized | |
Copper | 9.58 | 5.04 |
Cyanide | 1.46 | 0.605 |
Lead | 2.12 | 1.01 |
Oil and grease | 101 | 60.5 |
Total suspended solids | 207 | 98.3 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 10-2
Metal Powders
Sizing 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 powder sized | |
Copper | 0.028 | 0.015 |
Cyanide | 0.004 | 0.002 |
Lead | 0.006 | 0.003 |
Oil and grease | 0.292 | 0.175 |
Total suspended solids | 0.599 | 0.285 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 10-3
Metal Powders
Steam Treatment
Wet Air Pollution Control Scrubber Blowdown
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 powder metallurgy parts steam treated | |
Copper | 1.51 | 0.792 |
Cyanide | 0.230 | 0.095 |
Lead | 0.333 | 0.159 |
Oil and grease | 15.9 | 9.51 |
Total suspended solids | 32.5 | 15.5 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 10-4
Metal Powders
Tumbling, Burnishing, and Cleaning 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 powder metallurgy parts tumbled, burnished, or cleaned | |
Copper | 8.36 | 4.40 |
Cyanide | 1.28 | 0.528 |
Lead | 1.85 | 0.880 |
Oil and grease | 88.0 | 52.800 |
Total suspended solids | 181 | 85.8 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 10-5
Metal Powders
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 powder metallurgy parts sawed or ground with emulsion | |
Copper | 0.035 | 0.018 |
Cyanide | 0.005 | 0.002 |
Lead | 0.008 | 0.004 |
Oil and grease | 0.362 | 0.217 |
Total suspended solids | 0.742 | 0.353 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 10-6
Metal Powders
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 powder metallurgy parts sawed or ground with contact cooling water | |
Copper | 3.08 | 1.62 |
Cyanide | 0.470 | 0.195 |
Lead | 0.681 | 0.324 |
Oil and grease | 32.4 | 19.5 |
Total suspended solids | 66.4 | 31.6 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 10-7
Metal Powders
Hot Pressing 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 powder cooled after pressing | |
Copper | 16.7 | 8.80 |
Cyanide | 2.55 | 1.06 |
Lead | 3.70 | 1.76 |
Oil and grease | 176 | 106 |
Total suspended solids | 361 | 172 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 10-8
Metal Powders
Mixing Wet Air Pollution Control Scrubber Blowdown
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 powder mixed | |
Copper | 15.0 | 7.90 |
Cyanide | 2.29 | 0.948 |
Lead | 3.32 | 1.58 |
Oil and grease | 158 | 94.8 |
Total suspended solids | 324 | 154 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Wis. Admin. Code Department of Natural Resources NR 273.102