Wisconsin Administrative Code › Department of Natural Resources › NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System › Chapter NR 273 - Nonferrous metals forming and metal powders › Subchapter X - Metal Powders › Section NR 273.103 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable

Current through June 24, 2024
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 10-9
Metal Powders
Metal Powder Production Atomization Wastewater
BAT 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
Table 10-10
Metal Powders
Sizing Spent Emulsions
BAT 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
Table 10-11
Metal Powders
Steam Treatment
Wet Air Pollution Control Scrubber Blowdown
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pound pounds) of powde steam
								  treated
s per million off-r metallurgy parts
Copper
1.51
0.792
Cyanide
0.230
0.095
Lead
0.333
0.159
Table 10-12
Metal Powders
Tumbling, Burnishing, and Cleaning Wastewater
BAT 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
Table 10-13
Metal Powders
Sawing or Grinding Spent Emulsions
BAT 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
Table 10-14
Metal Powders
Sawing or Grinding
Contact Cooling Water
BAT 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
Table 10-15
Metal Powders
Hot Pressing
Contact Cooling Water
BAT 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
Table 10-16
Metal Powders
Mixing
Wet Air Pollution Control Scrubber Blowdown
BAT 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