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 273.092 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available

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 BPT:
Table 9-1
Zirconium-Hafnium
Extrusion Press Hydraulic Fluid Leakage
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
								  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
Oil and grease
4.74
2.85
Total suspended solids
9.72
4.62
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 9-2
Zirconium-Hafnium
Heat Treatment 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
								  zirconium-hafnium heat treated
Chromium
0.151
0.062
Cyanide
0.100
0.041
Nickel
0.659
0.436
Ammonia
45.7
20.1
Fluoride
20.4
9.06
Oil and grease
6.86
4.12
Total suspended solids
14.1
6.69
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 9-3
Zirconium-Hafnium
Surface Treatment Spent Baths
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
								  zirconium-hafnium surface treated
Chromium
0.150
0.061
Cyanide
0.099
0.041
Nickel
0.653
0.432
Ammonia
45.3
20
Fluoride
20.3
8.98
Oil and grease
6.80
4.08
Total suspended solids
14
6.63
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 9-4
Zirconium-Hafnium
Surface Treatment Rinse
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
								  zirconium-hafnium alkaline cleaned
Chromium
3.91
1.60
Cyanide
2.58
1.07
Nickel
17.1
11.3
Ammonia
1,190
521
Fluoride
529
235
Oil and grease
178
107
Total suspended solids
364
173
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 9-5
Zirconium-Hafnium
Alkaline Cleaning Spent Baths
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
								  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
Oil and grease
32
19.2
Total suspended solids
65.6
31.2
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 9-6
Zirconium-Hafnium
Alkaline Cleaning Rinse
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
								  zirconium-hafnium alkaline cleaned
Chromium
13.8
5.65
Cyanide
9.11
3.77
Nickel
60.3
39.9
Ammonia
4,190
1,840
Fluoride
1,870
829
Oil and grease
628
377
Total suspended solids
1,290
613
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 9-7
Zirconium-Hafnium
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
								  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
16.5
Fluoride
16.7
7.42
Oil and grease
5.62
3.37
Total suspended solids
11.5
5.48
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 9-8
Zirconium-Hafnium
Molten Salt Rinse
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
								  zirconium-hafnium treated with molten salt
Chromium
3.33
1.360
Cyanide
2.20
0.907
Nickel
14.5
9.60
Ammonia
1,010
443
Fluoride
450
200
Oil and grease
151
90.7
Total suspended solids
310
148
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 9-9
Zirconium-Hafnium
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
								  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
6.42
8.48
Oil and grease
13.2
3.85
Total suspended solids
9.72
6.26
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 9-10
Zirconium-Hafnium
Sawing or Grinding Rinse
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
								  sawed or ground zirconium-hafnium rinsed
Chromium
0.792
0.324
Cyanide
0.522
0.216
Nickel
3.46
2.29
Ammonia
240
106
Fluoride
107
47.5
Oil and grease
36
21.6
Total suspended solids
73.8
35.1
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 9-11
Zirconium-Hafnium
Inspection and Testing 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
								  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
Oil and grease
0.308
0.185
Total suspended solids
0.632
0.301
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all
					 times