Except as provided in 40 CFR 403.7, any existing source subject to this subpart which introduces polutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources. The mass of wastewater pollutants in secondary tungsten and cobalt process wastewater introduced into a POTW shall not exceed the following values:
(a) Tungsten detergent wash and rinse.
PSES for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
tungsten scrap washed
--------------Copper........................................ 0.250 0.119Nickel........................................ 0.107 0.072Ammonia (as N)................................ 25.990 11.430Cobalt........................................ 0.538 0.236Tungsten...................................... 0.679 0.302------------------------------------------------------------------------
(b) Tungsten leaching acid.
PSES for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
tungsten produced
--------------Copper........................................ 3.291 1.569Nickel........................................ 1.414 0.951Ammonia (as N)................................ 342.700 150.700Cobalt........................................ 7.096 3.111Tungsten...................................... 8.947 3.985------------------------------------------------------------------------
(c) Tungsten post-leaching wash and rinse.
PSES for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
tungsten produced
--------------Copper........................................ 6.583 3.137Nickel........................................ 2.829 1.903Ammonia (as N)................................ 685.600 301.400Cobalt........................................ 14.194 6.223Tungsten...................................... 17.900 7.972------------------------------------------------------------------------
(d) Synthetic scheelite filtrate.
PSES for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
synthetic scheelite
produced
--------------Copper........................................ 21.330 10.170Nickel........................................ 9.164 6.165Ammonia (as N)................................ 2,221.000 976.300Cobalt........................................ 45.984 20.160Tungsten...................................... 57.980 25.820------------------------------------------------------------------------
(e) Tungsten carbide leaching wet air pollution control.
PSES for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
tungsten carbide scrap
--------------Copper........................................ 2.241 1.068Nickel........................................ 0.963 0.648Ammonia (as N)................................ 233.400 102.600Cobalt........................................ 4.833 2.119Tungsten...................................... 6.093 2.714------------------------------------------------------------------------
(f) Tungsten carbide wash water.
PSES for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
tungsten carbide
produced
--------------Copper........................................ 10.670 5.083Nickel........................................ 4.583 3.083Ammonia (as N)................................ 1,111.000 488.300Cobalt........................................ 22.999 10.083Tungsten...................................... 29.000 12.920------------------------------------------------------------------------
(g) Cobalt sludge leaching wet air pollution control.
PSES for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
cobalt produced from
cobalt sludge
--------------Copper........................................ 45.800 21.830Nickel........................................ 19.680 13.240Ammonia (as N)................................ 4,770.000 2,097.000Cobalt........................................ 98.756 43.295Tungsten...................................... 124.500 55.460------------------------------------------------------------------------
(h) Crystallization decant.
PSES for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per million
pounds) of cobalt produced
---------------Copper...................................... 53.310 25.410Nickel...................................... 22.910 15.410Ammonia (as N).............................. 5,552.000 2,441.000Cobalt...................................... 114.954 50.397Tungsten.................................... 144.9 64.56------------------------------------------------------------------------
(i) Acid wash decant.
PSES for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per million
pounds) of cobalt produced
---------------Copper...................................... 24.400 11.630Nickel...................................... 10.490 7.053Ammonia (as N).............................. 2,541.000 1,117.000Cobalt...................................... 52.611 23.065Tungsten.................................... 66.34 29.55------------------------------------------------------------------------
(j) Cobalt hydroxide filtrate.
PSES for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per million
pounds) of cobalt produced
---------------Copper...................................... 72.510 34.560Nickel...................................... 31.160 20.960Ammonia (as N).............................. 7,551.000 3,320.000Cobalt...................................... 156.346 68.543Tungsten.................................... 197.1 87.8------------------------------------------------------------------------
(k) Cobalt hydroxide filter cake wash.
PSES for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
cobalt produced
--------------Copper........................................ 139.600 66.510Nickel........................................ 59.970 40.340Ammonia (as N)................................ 14,530.000 6,389.000Cobalt........................................ 300.094 131.932Tungsten...................................... 379.400 169.000------------------------------------------------------------------------ [50 FR 38386, Sept. 20, 1985, as amended at 55 FR 31717, 31718, Aug. 3, 1990]