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Electronic Code of Federal Regulations

e-CFR data is current as of December 6, 2019

Title 40Chapter ISubchapter NPart 461Subpart G → §461.72


Title 40: Protection of Environment
PART 461—BATTERY MANUFACTURING POINT SOURCE CATEGORY
Subpart G—Zinc Subcategory


§461.72   Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).

(a) Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:

(1) Subpart G—Wet Amalgamated Powder Anodes.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
  Metric units—mg/kg of Zinc
  English units—pounds per 1,000,000 pounds of Zinc
Chromium0.240.099
Mercury0.140.055
Silver0.230.093
Zinc0.800.34
Manganese0.370.16

(2) Subpart G—Gelled Amalgam Anodes.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
  Metric units—mg/kg of Zinc
  English units—pounds per 1,000,000 pounds of Zinc
Chromium0.0300.012
Mercury0.0170.007
Silver0.0280.012
Zinc0.0990.042
Manganese0.0460.020

(3) Subpart G—Zinc Oxide Formed Anodes.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
  Metric units—mg/kg of Zinc
  English units—pounds per 1,000,000 pounds of Zinc
Chromium9.533.90
Mercury5.422.17
Silver8.893.68
Zinc31.6413.22
Manganese14.746.28

(4) Subpart G—Electrodeposited Anodes.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of zinc deposited
  English units—pounds per 1,000,000 pounds of zinc deposited
Chromium94.4738.65
Mercury53.6821.47
Silver88.0336.50
Zinc313.46130.97
Manganese146.0062.26

(5) Subpart G—Silver Powder Formed Cathodes.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver applied
  English units—pounds per 1,000,000 pounds of silver applied
Chromium13.075.35
Mercury7.432.97
Silver12.185.05
Zinc43.3618.12
Manganese20.208.61

(6) Subpart G—Silver Oxide Powder Formed Cathodes.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver applied
  English units—pounds per 1,000,000 pounds of silver applied
Chromium8.733.57
Mercury4.961.99
Silver8.143.37
Zinc28.9812.11
Manganese13.505.76

(7) Subpart G—Silver Peroxide Cathodes.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver applied
  English units—pounds per 1,000,000 pounds of silver applied
Chromium2.090.87
Mercury1.190.48
Silver1.950.81
Zinc6.952.90
Manganese3.241.38

(8) Subpart G—Nickel Impregnated Cathodes.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of nickel applied
  English units—pounds per 1,000,000 pounds of nickel applied
Chromium88.036.0
Mercury50.020.0
Nickel384.0254.0
Silver82.034.0
Zinc292.0122.0
Manganese136.058.0

(9) Subpart G—Miscellaneous Wastewater Streams.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of cells produced
  English units—pounds per 1,000,000 pounds of cells produced
Chromium0.570.23
Cyanide0.380.16
Mercury0.320.13
Nickel2.481.64
Silver0.530.22
Zinc1.880.79
Manganese0.880.37

(10) Subpart G—Silver Etch.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver processed
  English units—pounds per 1,000,000 pounds of silver processed
Chromium3.271.34
Mercury1.860.74
Silver3.051.26
Zinc10.864.54
Manganese5.062.16

(11) Subpart G—Silver Peroxide Production.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver peroxide produced
  English units—pounds per 1,000,000 pounds of silver peroxide produced
Chromium3.481.42
Mercury1.980.79
Silver3.241.34
Zinc11.554.83
Manganese5.382.29

(12) Subpart G—Silver Powder Production.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver powder produced
  English units—pounds per 1,000,000 pounds of silver powder produced
Chromium1.410.58
Mercury0.800.32
Silver1.320.55
Zinc4.691.96
Manganese2.180.93

(b) There shall be no discharge allowance for process wastewater pollutants from any battery manufacturing operation other than those battery manufacturing operations listed above.

[49 FR 9134, Mar. 9, 1984; 49 FR 13879, Apr. 9, 1984]

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