Wisconsin Administrative Code › Department of Natural Resources › NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System › Chapter NR 274 - Nonferrous metals manufacturing › Subchapter XXXIII - Primary Zirconium and Hafnium › Section NR 274.332 - 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 33-1
Primary Zirconium and Hafnium Sand Drying Wet Air
					 Pollution Control
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds)
of zirconium dioxide and hafnium
dioxide produced
Chromium
0.250
0.102
Cyanide
0.165
0.068
Lead
0.239
0.114
Nickel
1.091
0.721
Ammonia (as N)
75.710
33.280
Total suspended solids
23.290
11.080
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times.
Table 33-2
Primary Zirconium and Hafnium Sand Chlorination Off-Gas
					 Wet Air Pollution Control
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds)
of zirconium dioxide and hafnium
dioxide produced
Chromium
19.130
7.825
Cyanide
12.610
5.216
Lead
18.260
8.694
Nickel
83.460
55.210
Ammonia (as N)
5,795.000
2,547.000
Total suspended solids
1,782.000
847.700
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times.
Table 33-3
Primary Zirconium and Hafnium Sand Chlorination Area-Vent
					 Wet Air Pollution Control
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds)
of zirconium dioxide and hafnium
dioxide produced
Chromium
3.751
1.534
Cyanide
2.472
1.023
Lead
3.580
1.705
Nickel
16.370
10.830
Ammonia (as N)
1,136.000
449.500
Total suspended solids
349.500
166.200
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times.
Table 33-4
Primary Zirconium and Hafnium Silicon Tetrachloride
					 Purification Wet Air Pollution Control
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds)
of zirconium dioxide and hafnium
dioxide produced
Chromium
3.299
1.350
Cyanide
2.174
0.900
Lead
3.149
1.500
Nickel
14.400
9.522
Ammonia (as N)
999.500
439.400
Total suspended solids
307.400
146.200
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times.
Table 33-5
Primary Zirconium and Hafnium Feed Make Up Wet Air
					 Pollution Control
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds)
of zirconium dioxide and hafnium
dioxide produced
Chromium
2.501
1.023
Cyanide
1.648
0.682
Lead
2.387
1.137
Nickel
10.910
7.217
Ammonia (as N)
757.500
333.000
Total suspended solids
233.000
110.800
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times.
Table 33-6
Primary Zirconium and Hafnium Iron Extraction Steam
					 Stripper Bottoms
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds)
of zirconium dioxide and hafnium
dioxide produced
Chromium
0.987
0.404
Cyanide
0.651
0.269
Lead
0.942
0.449
Nickel
4.308
2.850
Ammonia (as N)
299.100
131.500
Total suspended solids
92.000
43.760
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times.
Table 33-7
Primary Zirconium and Hafnium Zirconium Filtrate
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds)
of zirconium dioxide and hafnium
dioxide produced
Chromium
17.070
6.982
Cyanide
11.250
4.655
Lead
16.290
7.758
Nickel
74.480
49.260
Ammonia (as N)
5,171.000
2,273.000
Total suspended solids
1,590.000
756.400
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times.
Table 33-8
Primary Zirconium and Hafnium Hafnium Filtrate
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds)
of zirconium dioxide and hafnium
dioxide produced
Chromium
0.000
0.000
Cyanide
0.000
0.000
Lead
0.000
0.000
Nickel
0.000
0.000
Ammonia (as N)
0.000
0.000
Total suspended solids
0.000
0.000
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times.
Table 33-9
Primary Zirconium and Hafnium Calcining Caustic Wet Air
					 Pollution Control
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds)
of zirconium dioxide and hafnium
dioxide produced
Chromium
3.959
1.619
Cyanide
2.609
1.080
Lead
3.799
1.799
Nickel
17.270
11.430
Ammonia (as N)
1,199.000
527.200
Total suspended solids
368.900
175.400
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times.
Table 33-10
Primary Zirconium and Hafnium Pure Chlorination Wet Air
					 Pollution Control
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds)
of zirconium dioxide and hafnium
dioxide produced
Chromium
16.860
6.897
Cyanide
11.110
4.598
Lead
16.090
7.663
Nickel
73.570
48.660
Ammonia (as N)
5,108.000
2,245.000
Total suspended solids
1,571.000
747.200
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times.
Table 33-11
Primary Zirconium and Hafnium Reduction Area Vent Wet Air
					 Pollution Control
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds)
of zirconium dioxide and hafnium
dioxide produced
Chromium
1.622
0.663
Cyanide
1.069
0.442
Lead
1.548
0.737
Nickel
7.077
4.681
Ammonia (as N)
491.300
216.000
Total suspended solids
151.100
71.880
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times.
Table 33-12
Primary Zirconium and Hafnium Magnesium Recovery Off-Gas
					 Wet Air Pollution Control
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds)
of zirconium dioxide and hafnium
dioxide produced
Chromium
9.123
3.732
Cyanide
6.013
2.488
Lead
8.708
4.147
Nickel
39.810
26.330
Ammonia (as N)
2,764.000
1,215.000
Total suspended solids
850.100
404.300
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times.
Table 33-13
Primary Zirconium and Hafnium Magnesium Recovery Area-Vent
					 Wet Air Pollution Control
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds)
of zirconium dioxide and hafnium
dioxide produced
Chromium
5.068
2.073
Cyanide
3.340
1.382
Lead
4.838
2.304
Nickel
22.110
14.630
Ammonia (as N)
1,535.000
675.000
Total suspended solids
472.200
224.600
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times.
Table 33-14
Primary Zirconium and Hafnium Zirconium Chip Crushing Wet
					 Air Pollution Control
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds)
of zirconium dioxide and hafnium
dioxide produced
Chromium
0.000
0.000
Cyanide
0.000
0.000
Lead
0.000
0.000
Nickel
0.000
0.000
Ammonia (as N)
0.000
0.000
Total suspended solids
0.000
0.000
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times.
Table 33-15
Primary Zirconium and Hafnium Acid Leachate From Zirconium
					 Metal Production
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of
zirconium dioxide and hafnium dioxide
produced
Chromium
12.970
5.304
Cyanide
8.545
3.536
Lead
12.380
5.893
Nickel
56.570
37.420
Ammonia (as N)
3,928.000
1,727.000
Total suspended
solids
1,208.000
574.600
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times.
Table 33-16
Primary Zirconium and Hafnium Acid Leachate From Zirconium
					 Alloy Production
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds)
of zirconium dioxide and hafnium
dioxide produced
Chromium
6.939
2.839
Cyanide
4.574
1.893
Lead
6.624
3.154
Nickel
30.280
20.030
Ammonia (as N)
2,102.000
924.200
Total suspended solids
646.600
307.600
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times.
Table 33-17
Primary Zirconium and Hafnium Leaching Rinse Waters From
					 Zirconium Metal Production
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds)
of zirconium dioxide and hafnium
dioxide produced
Chromium
25.930
10.610
Cyanide
17.090
7.072
Lead
24.750
11.790
Nickel
113.200
74.840
Ammonia (as N)
7,856.000
3,453.000
Total suspended solids
2,416.000
1,149.000
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times.
Table 33-18
Primary Zirconium and Hafnium Leaching Rinse Waters From
					 Zirconium Alloy Production
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds)
of zirconium dioxide and hafnium
dioxide produced
Chromium
0.347
0.142
Cyanide
0.299
0.095
Lead
0.331
0.158
Nickel
1.515
1.002
Ammonia (as N)
105.200
46.240
Total suspended solids
32.350
15.390
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times.