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 IX - Zirconium-Hafnium › Section NR 273.093 - 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 9-12
Zirconium-Hafnium
Extrusion Press Hydraulic Fluid Leakage
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
								  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
Table 9-13
Zirconium-Hafnium
Heat Treatment 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
								  zirconium-hafnium heat treated
Chromium
0.015
0.006
Cyanide
0.010
0.004
Nickel
0.066
0.044
Ammonia
4.57
2.01
Fluoride
2.04
0.906
Table 9-14
Zirconium-Hafnium
Surface Treatment Spent Baths
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
								  zirconium-hafnium surface treated
Chromium
0.150
0.061
Cyanide
0.099
0.041
Nickel
0.653
0.432
Ammonia
45.3
20.0
Fluoride
20.3
8.98
Table 9-15
Zirconium-Hafnium
Surface Treatment Rinse
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
								  zirconium-hafnium surface treated
Chromium
0.391
0.160
Cyanide
0.258
0.107
Nickel
1.71
1.13
Ammonia
119
52.1
Fluoride
52.9
23.5
Table 9-16
Zirconium-Hafnium
Alkaline Cleaning Spent Baths
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
								  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
Table 9-17
Zirconium-Hafnium
Alkaline Cleaning Rinse
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
								  zirconium-hafnium alkaline cleaned
Chromium
1.38
0.565
Cyanide
0.911
0.377
Nickel
6.03
3.99
Ammonia
419
184
Fluoride
187
82.9
Table 9-18
Zirconium-Hafnium
Sawing or Grinding Spent Emulsions
BAT Effluent Limita
tions
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
16.50
Fluoride
16.7
7.42
Table 9-19
Zirconium-Hafnium
Molten Salt Rinse
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
								  zirconium-hafnium treated with molten salt
Chromium
0.333
0.136
Cyanide
0.220
0.091
Nickel
1.45
0.960
Ammonia
101
44.3
Fluoride
45.0
20.0
Table 9-20
Zirconium-Hafnium
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
								  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
19.1
8.48
Table 9-21
Zirconium-Hafnium
Sawing or Grinding Rinse
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
								  sawed or ground zirconium-hafnium rinsed
Chromium
0.079
0.033
Cyanide
0.052
0.022
Nickel
0.346
0.229
Ammonia
24.0
10.6
Fluoride
10.7
4.75
Table 9-22
Zirconium-Hafnium
Inspection Testing 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
								  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