Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection - Wisconsin Pollutant Discharge Elimination System
Chapter NR 230 - Inorganic chemicals manufacturing
Subchapter XXII - Titanium dioxide
Section NR 230.224 - New source performance standards
Any new source subject to this subchapter shall achieve the following NSPS:
Table 32
Titanium Dioxide Sulfate Process
|
NSPS |
||
|
kg/kkg (pounds per 1,000 pounds) of titanium dioxide |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
TSS |
110 |
30 |
|
Iron |
4.1 |
1.2 |
|
Chromium |
0.27 |
0.14 |
|
Nickel |
0.18 |
0.095 |
|
pH |
(1) |
(1) |
(1) Within the range of 6.0 to 9.0
Table 33
Titanium Dioxide Chloride Process
|
NSPS |
||
|
kg/kkg (pounds per 1,000 pounds) of titanium dioxide |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
TSS |
14 |
4.0 |
|
Iron |
0.52 |
0.16 |
|
Chromium |
0.023 |
0.012 |
|
pH |
(1) |
(1) |
(1) Within the range of 6.0 to 9.0
Table 34
Titanium Dioxide Chloride-Ilmenite Process
|
NSPS |
||
|
kg/kkg (pounds per 1,000 pounds) of titanium dioxide |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
TSS |
8.4 |
2.4 |
|
Iron |
0.32 |
0.096 |
|
Chromium |
0.014 |
0.0072 |
|
Nickel |
0.020 |
0.010 |
|
pH |
(1) |
(1) |
(1) Within the range of 6.0 to 9.0
