View all text of Subpart AE [§ 421.330 - § 421.337]
§ 421.333 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:
(a) Sand drying wet air pollution control.
BAT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced | Chromium (total) | 0.210 | 0.085 | Cyanide (total) | 0.114 | 0.045 | Lead | 0.159 | 0.074 | Nickel | 0.312 | 0.210 | Ammonia (as N) | 75.710 | 33.280 |
|---|
(b) Sand chlorination off-gas wet air pollution control.
BAT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced | Chromium (total) | 16.080 | 6.521 | Cyanide (total) | 8.694 | 3.478 | Lead | 12.170 | 5.651 | Nickel | 23.910 | 16.080 | Ammonia (as N) | 5,795.000 | 2,547.000 |
|---|
(c) Sand chlorination area-vent wet air pollution control.
BAT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced | Chromium (total) | 3.154 | 1.279 | Cyanide (total) | 1.705 | 0.682 | Lead | 2.387 | 1.108 | Nickel | 4.688 | 3.154 | Ammonia (as N) | 1,136.000 | 499.500 |
|---|
(d) SiCl
BAT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced | Chromium (total) | 2.774 | 1.125 | Cyanide (total) | 1.500 | 0.600 | Lead | 2.099 | 0.975 | Nickel | 4.124 | 2.774 | Ammonia (as N) | 999.500 | 439.400 |
|---|
(e) Feed makeup wet air pollution control.
BAT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced | Chromium (total) | 2.103 | 0.852 | Cyanide (total) | 1.137 | 0.455 | Lead | 1.591 | 0.739 | Nickel | 3.126 | 2.103 | Ammonia (as N) | 757.500 | 333.000 |
|---|
(f) Iron extraction (MIBK) steam stripper bottoms.
BAT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced | Chromium (total) | 0.830 | 0.337 | Cyanide (total) | 0.449 | 0.180 | Lead | 0.628 | 0.292 | Nickel | 1.234 | 0.830 | Ammonia (as N) | 299.100 | 131.500 |
|---|
(g) Zirconium filtrate.
BAT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced | Chromium (total) | 14.350 | 5.819 | Cyanide (total) | 7.758 | 3.103 | Lead | 10.860 | 5.043 | Nickel | 21.330 | 14.350 | Ammonia (as N) | 5,171.000 | 2,273.00 |
|---|
(h) Hafnium filtrate.
BAT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced | Chromium (total) | 0.000 | 0.000 | Cyanide (total) | 0.000 | 0.000 | Lead | 0.000 | 0.000 | Nickel | 0.000 | 0.000 | Ammonia (as N) | 0.000 | 0.000 |
|---|
(i) Calcining caustic wet air pollution control.
BAT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced | Chromium (total) | 3.329 | 1.350 | Cyanide (total) | 1.799 | 0.720 | Lead | 2.519 | 1.170 | Nickel | 4.948 | 3.329 | Ammonia (as N) | 1,199.000 | 527.200 |
|---|
(j) Pure chlorination wet air pollution control.
BAT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of zirconium and hafnium produced | Chromium (total) | 14.180 | 5.748 | Cyanide (total) | 7.663 | 3.065 | Lead | 10.730 | 4.981 | Nickel | 21.070 | 14.180 | Ammonia (as N) | 5,108.000 | 2,245.000 |
|---|
(k) Reduction area-vent wet air pollution control.
BAT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of zirconium and hafnium produced | Chromium (total) | 1.364 | 0.553 | Cyanide (total) | 0.737 | 0.295 | Lead | 1.032 | 0.479 | Nickel | 2.027 | 1.364 | Ammonia (as N) | 491.300 | 216.000 |
|---|
(l) Magnesium recovery off-gas wet air pollution control.
BAT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of zirconium and hafnium produced | Chromium (total) | 7.671 | 3.110 | Cyanide (total) | 4.147 | 1.659 | Lead | 5.805 | 2.695 | Nickel | 11.400 | 7.671 | Ammonia (as N) | 2,764.000 | 1,215.000 |
|---|
(m) Magnesium recovery area-vent wet air pollution control.
BAT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of zirconium and hafnium produced | Chromium (total) | 4.262 | 1.728 | Cyanide (total) | 2.304 | 0.921 | Lead | 3.225 | 1.497 | Nickel | 6.335 | 4.262 | Ammonia (as N) | 1,535.000 | 675.000 |
|---|
(n) Zirconium chip crushing wet air pollution control.
BAT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of zirconium and hafnium produced | Chromium (total) | 0.000 | 0.000 | Cyanide (total) | 0.000 | 0.000 | Lead | 0.000 | 0.000 | Nickel | 0.000 | 0.000 | Ammonia (as N) | 0.000 | 0.000 |
|---|
(o) Acid leachate from zirconium metal production.
BAT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of pure zirconium produced | Chromium (total) | 10.900 | 4.420 | Cyanide (total) | 5.893 | 2.357 | Lead | 8.250 | 3.831 | Nickel | 16.210 | 10.900 | Ammonia (as N) | 3,928.000 | 1,674.000 |
|---|
(p) Acid leachate from zirconium alloy production.
BAT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of zirconium contained in alloys produced | Chromium (total) | 5.835 | 2.366 | Cyanide (total) | 3.154 | 1.262 | Lead | 4.416 | 2.050 | Nickel | 8.674 | 5.835 | Ammonia (as N) | 2,102.000 | 895.000 |
|---|
(q) Leaching rinse water from zirconium metal production.
BAT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of pure zirconium produced | Chromium (total) | 21.810 | 8.840 | Cyanide (total) | 11.790 | 4.715 | Lead | 16.500 | 7.661 | Nickel | 32.410 | 21.810 | Ammonia (as N) | 7,856.000 | 3,453.000 |
|---|
(r) Leaching rinse water from zirconium alloy production.
BAT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of zirconium contained in alloys produced | Chromium (total) | 0.292 | 0.118 | Cyanide (total) | 0.158 | 0.063 | Lead | 0.221 | 0.103 | Nickel | 0.434 | 0.292 | Ammonia (as N) | 105.200 | 46.240 |
|---|