View all text of Subpart AE [§ 421.330 - § 421.337]
§ 421.336 - Pretreatment standards for new sources.
Except as provided in 40 CFR 403.7, any new source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass of wastewater pollutants in primary zirconium and hafnium process wastewater introduced into a POTW shall not exceed the following values:
(a) Sand drying wet air pollution control.
PSNS 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 |
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(b) Sand chlorination off-gas wet air pollution control.
PSNS 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) | 8.690 | 3.478 | Lead | 12.170 | 5.651 | Nickel | 23.910 | 16.080 | Ammonia (as N) | 5,795.000 | 2,547.000 |
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(c) Sand chlorination area vent wet air pollution control.
PSNS 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 |
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(d) SiCl
PSNS 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 |
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(e) Feed makeup wet air pollution control.
PSNS 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 |
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(f) Iron extraction (MIBK) steam stripper bottoms.
PSNS 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 |
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(g) Zirconium filtrate.
PSNS 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 | 21.340 | 14.350 | Ammonia (as N) | 5,171.000 | 2,273.000 |
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(h) Hafnium filtrate.
PSNS 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 |
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(i) Calcining caustic wet air pollution control.
PSNS 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 |
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(j) Pure chlorination wet air pollution control.
PSNS 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 | 21.007 | 14.180 | Ammonia (as N) | 5,108.000 | 2,245,000 |
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(k) Reduction area-vent wet air pollution control.
PSNS 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 |
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(l) Magnesium recovery off-gas wet air pollution control.
PSNS 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 |
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(m) Magnesium recovery area-vent wet air pollution control.
PSNS 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 | 675.00 |
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(n) Zirconium chip crushing wet air pollution control.
PSNS 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 |
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(o) Acid leachate from zirconium metal production.
PSNS 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 | 1,674.00 |
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(p) Acid leachate from zirconium alloy production.
PSNS 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 | 895.800 |
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(q) Leaching rinse water from zirconium metal production.
PSNS 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 |
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(r) Leaching rinse water from zirconium alloy production.
PSNS 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 |
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