Code of Federal Regulations (alpha)

CFR /  Title 40  /  Part 421  /  Sec. 421.105 Pretreatment standards for existing sources.

Except as provided in 40 CFR 403.7 and 403.13, any existing 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 existing sources. The mass of wastewater pollutants in primary tungsten process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart J--Tungstic Acid Rinse.

PSES------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

tungstic acid (as W)

produced

--------------Lead.......................................... 11.490 5.333Zinc.......................................... 41.850 17.230Ammonia (as N)................................ 5,469.000 2,404.000------------------------------------------------------------------------

(b) Subpart J--Acid Leach Wet Air Pollution Control.

PSES------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

tungstic acid (as W)

produced

--------------Lead.......................................... 1.003 0.466Zinc.......................................... 3.653 1.504Ammonia (as N)................................ 477.400 209.900------------------------------------------------------------------------

(c) Subpart J--Alkali Leach Wash.

PSES------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

tungstate (as W)

produced

--------------Lead.......................................... 0.000 0.000Zinc.......................................... 0.000 0.000Ammonia (as N)................................ 0.000 0.000------------------------------------------------------------------------

(d) Subpart J--Alkali Leach Wash Condensate.

PSES------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

sodium tungstate (as W)

produced

--------------Lead.......................................... 5.372 2.494Zinc.......................................... 19.570 8.057Ammonia (as N)................................ 2,557.000 1,124.000------------------------------------------------------------------------

(e) Subpart J--Ion Exchange Raffinate (Commingled With Other Process or Nonprocess Waters).

PSES------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

tungstate (as W)

produced

--------------Lead.......................................... 24.780 11.500Zinc.......................................... 90.240 37.160Ammonia (as N)................................ 11,790.000 5,185.000------------------------------------------------------------------------

(f) Subpart J--Ion Exchange Raffinate (Not Commingled With Other Process or Nonprocess Waters).

PSES------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

ammonium tungstate (as

W) produced

--------------Lead.......................................... 24.780 11.500Zinc.......................................... 90.240 37.160Ammonia (as N) \1\............................ 11,790.000 5,185.000------------------------------------------------------------------------\1\ The pretreatment standard for this pollutant does not apply if (a)

the mother liquor feed to the ion exchange process or the raffinate

from the ion exchange process contains sulfates at concentrations

exceeding 1000 mg/l; (b) this mother liquor or raffinate is treated by

ammonia steam stripping; and (c) such mother liquor or raffinate is

not commingled with any other process or nonprocess waters prior to

steam stripping for ammonia removal.

(g) Subpart J--Calcium Tungstate Precipitate Wash.

PSES------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

calcium tungstate (as W)

produced

--------------Lead.......................................... 20.670 9.594Zinc.......................................... 75.280 31.000Ammonia (as N)................................ 9,838.000 4,325.000------------------------------------------------------------------------

(h) Subpart J--Crystallization and Drying of Ammonium Paratungstate.

PSES------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

ammonium paratungstate

(as W) produced

--------------Lead.......................................... 0.000 0.000Zinc.......................................... 0.000 0.000Ammonia (as N)................................ 0.000 0.000------------------------------------------------------------------------

(i) Subpart J--Ammonium Paratungstate Conversion to Oxides Wet Air Pollution Control.

PSES------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

tungstic oxide (as W)

produced

--------------Lead.......................................... 0.773 0.359Zinc.......................................... 2.817 1.160Ammonia (as N)................................ 368.200 161.900------------------------------------------------------------------------

(j) Subpart J--Ammonium Paratungstate Conversion to Oxides Water of Formation.

PSES------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

tungstic oxide (as W)

produced

--------------Lead.......................................... 0.018 0.008Zinc.......................................... 0.064 0.026Ammonia (as N)................................ 8.398 3.692------------------------------------------------------------------------

(k) Subpart J--Reduction to Tungsten Wet Air Pollution Control.

PSES------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

tungsten metal produced

--------------

Lead.......................................... .862 .400Zinc.......................................... 3.142 1.294Ammonia (as N)................................ 410.600 180.500------------------------------------------------------------------------

(l) Subpart J--Reduction to Tungsten Water of Formation.

PSES------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

tungsten metal produced

--------------Lead.......................................... .137 .064Zinc.......................................... .499 .205Ammonia (as N)................................ 65.190 28.660------------------------------------------------------------------------

(m) Subpart J--Tungsten Powder Acid Leach and Wash.

PSES------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

tungsten metal produced

--------------Lead.......................................... .672 .312Zinc.......................................... 2.448 1.008Ammonia (as N)................................ 319.900 140.700------------------------------------------------------------------------

(n) Subpart J--Molybdenum Sulfide Precipitation Wet Air Pollution Control.

PSES------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds of

tungsten metal produced

--------------Lead.......................................... 0.000 0.000Zinc.......................................... 0.000 0.000Ammonia (as N)................................ 0.000 0.000------------------------------------------------------------------------ [49 FR 8812, Mar. 8, 1984, as amended at 53 FR 1711, Jan. 21, 1988]