421.103—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)
Subpart J—Tungstic Acid Rinse.
BAT Effluent Limitations
|
mg/kg (pounds per million pounds) of tungstic acid (as W) produced |
| Lead |
11.490 |
5.333 |
| Zinc |
41.850 |
17.230 |
| Ammonia (as N) |
5,469.000 |
2,404.000 |
(b)
Subpart J—Acid Leach Wet Air Pollution Control.
BAT Effluent Limitations
|
mg/kg (pounds per million pounds) of tungstic acid (as W) produced |
| Lead |
1.003 |
0.466 |
| Zinc |
3.653 |
1.504 |
| Ammonia (as N) |
477.400 |
209.900 |
(c)
Subpart J—Alkali Leach Wash.
BAT Effluent Limitations
|
mg/kg (pounds per million pounds) of sodium tungstate (as W) produced |
| Lead |
0.000 |
0.000 |
| Zinc |
0.000 |
0.000 |
| Ammonia (as N) |
0.000 |
0.000 |
(d)
Subpart J—Alkali Leach Wash Condensate.
BAT Effluent Limitations
|
mg/kg (pounds per million pounds) of sodium tungstate (as W) produced |
| Lead |
5.372 |
2.494 |
| Zinc |
19.570 |
8.057 |
| Ammonia (as N) |
2,557.000 |
1,124.000 |
(e)
Subpart J—Ion Exchange Raffinate (Commingled With Other Process or Nonprocess Waters).
BAT Effluent Limitations
|
mg/kg (pounds per million pounds) of ammonium tungstate (as W) produced |
| Lead |
24.780 |
11.500 |
| Zinc |
90.240 |
37.160 |
| Ammonia (as N) |
11,790.000 |
5,185.000 |
(f)
Subpart J—Ion Exchange Raffinate (Not Commingled With Other Process or Nonprocess Waters).
BAT Effluent Limitations
|
mg/kg (pounds per million pounds) of ammonium tungstate (as W) produced |
| Lead |
24.780 |
11.500 |
| Zinc |
90.240 |
37.160 |
| Ammonia (as N) 1
|
11,790.000 |
5,185.000 |
|
1 The effluent limitation for this pollutant does not apply if a) the motor liquor feed to the ion exchange process or the raffinate from the ion exchange process contains sulfates at concentrations exceeding 1000 mg/1; 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.
BAT Effluent Limitations
|
mg/kg (pounds per/million pounds) of calcium tungstate (as W) produced |
| Lead |
20.670 |
9.594 |
| Zinc |
75.280 |
31.000 |
| Ammonia (as N) |
9,838.000 |
4,325.000 |
(h)
Subpart J—Crystallization and Drying of Ammonium Paratungstate.
BAT Effluent Limitations
|
mg/kg (pounds per/million pounds) of ammonium paratungstate (as W) produced |
| Lead |
0.000 |
0.000 |
| Zinc |
0.000 |
0.000 |
| Ammonia (as N) |
0.000 |
0.000 |
(i)
Subpart J—Ammonium Paratungstate Conversion to Oxides Wet Air Pollution Control.
BAT Effluent Limitations
|
mg/kg (pounds per/million pounds) of tungstic oxide (as W) produced |
| Lead |
0.773 |
0.359 |
| Zinc |
2.817 |
1.160 |
| Ammonia (as N) |
368.200 |
161.900 |
(j)
Subpart J—Ammonium Paratungstate Conversion to Oxides Water of Formation.
BAT Effluent Limitations
|
mg/kg (pounds per/million pounds) of tungstic oxide (as W) produced |
| Lead |
0.018 |
0.008 |
| Zinc |
0.064 |
0.026 |
| Ammonia (as N) |
8.398 |
3.692 |
(k)
Subpart J—Reduction to Tungsten Wet Air Pollution Control.
BAT Effluent Limitations
|
mg/kg (pounds per/million pounds) of tungsten metal produced |
| Lead |
0.862 |
0.400 |
| Zinc |
3.142 |
1.294 |
| Ammonia (as N) |
410.600 |
180.500 |
(l)
Subpart J—Reduction to Tungsten Water of Formation.
BAT Effluent Limitations
|
mg/kg (pounds per/million pounds) of tungsten metal produced |
| Lead |
0.137 |
0.064 |
| Zinc |
0.499 |
0.205 |
| Ammonia (as N) |
65.190 |
28.660 |
(m)
Subpart J—Tungsten Powder Acid Leach and Wash.
BAT Effluent Limitations
|
mg/kg (pounds per million pounds) of tungsten metal produced |
| Lead |
0.672 |
0.312 |
| Zinc |
2.448 |
1.008 |
| Ammonia (as N) |
319.900 |
140.700 |
(n)
Subpart J—Molybdenum Sulfide Precipitation Wet Air Pollution Control.
BAT Effluent Limitations
|
mg/kg (pounds per million pounds) of tungsten metal produced |
| Lead |
0.000 |
0.000 |
| Zinc |
0.000 |
0.000 |
| Ammonia (as N) |
0.000 |
0.000 |
[49 FR 8812, Mar. 8, 1984, as amended at 53 FR 1708, Jan. 21, 1988]