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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 40 - Protection of Environment |
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Chapter I - Environmental Protection Agency |
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SubChapter N - Effluent Guidelines and Standards |
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Part 421 - Nonferrous Metals Manufacturing Point Source Category |
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Subpart Z - Secondary Tantalum Subcategory |
§ 421.283 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
Latest version.
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§ 421.283 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) Tantalum alloy leach and rinse.
BAT Limitations for the Secondary Tantalum Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of tantalum powder produced Copper 295.200 140.700 Lead 64.570 29.980 Nickel 126.800 85.320 Zinc 235.200 96.850 Tantalum 103.800 (b) Capacitor leach and rinse.
BAT Limitations for the Secondary Tantalum Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of tantalum powder produced from leaching Copper 25.860 12.320 Lead 5.656 2.626 Nickel 11.110 7.474 Zinc 20.600 8.484 Tantalum 9.090 (c) Tantalum sludge leach and rinse.
BAT Limitations for the Secondary Tantalum Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of equivalent pure tantalum powder produced Copper 262.800 125.200 Lead 57.480 26.690 Nickel 112.900 75.960 Zinc 209.400 86.230 Tantalum 92.390 (d) Tantalum powder acid wash and rinse.
BAT Limitations for the Secondary Tantalum Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of tantalum powder produced Copper 0.448 0.214 Lead 0.098 0.046 Nickel 0.193 0.130 Zinc 0.357 0.147 Tantalum 0.158 (e) Leaching wet air pollution control.
BAT Limitations for the Secondary Tantalum Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of equivalent pure tantalum powder produced Copper 6.246 2.977 Lead 1.366 0.634 Nickel 2.684 1.806 Zinc 4.978 2.050 Tantalum 2.196