40 C.F.R. § 421.332

Current through September 30, 2024
Section 421.332 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available

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 practicable technology currently available:

(a) Sand drying wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced
Chromium (total)0.2500.102
Cyanide (total)0.1650.068
Lead0.2390.114
Nickel1.0910.721
Ammonia (as N)75.71033.280
Total suspended solids23.29011.080
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(b) Sand chlorination off-gas wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of zironium dioxide and hafnium dioxide produced
Chromium (total)19.1307.825
Cyanide (total)12.6105.216
Lead18.2608.694
Nickel83.46055.210
Ammonia (as N)5,795.0002,547.000
Total suspended solids1,782.000847.700
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(c) Sand chlorination area-vent wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced
Chromium (total)3.7511.534
Cyanide (total)2.4721.023
Lead3.5801.705
Nickel16.37010.830
Ammonia (as N)1,136.000449.500
Total suspended solids349.500166.200
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(d) SiCl4 purification wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced
Chromium (total)3.2991.350
Cyanide (total)2.1740.900
Lead3.1491.500
Nickel14.4009.522
Ammonia (as N)999.500439.400
Total suspended solids307.400146.200
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(e) Feed makeup wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced
Chromium (total)2.5011.023
Cyanide (total)1.6480.682
Lead2.3871.137
Nickel10.9107.217
Ammonia (as N)757.500333.000
Total suspended solids233.000110.800
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(f) Iron extraction (MIBK) steam stripper bottoms.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced
Chromium (total)0.9870.404
Cyanide (total)0.6510.269
Lead0.9420.449
Nickel4.3082.850
Ammonia (as N)299.100131.500
Total suspended solids92.00043.760
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(g) Zirconium filtrate.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced
Chromium (total)17.0706.982
Cyanide (total)11.2504.655
Lead16.2907.758
Nickel74.48049.260
Ammonia (as N)5,171.0002,273.000
Total suspended solids1,590.000756.400
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(h) Hafnium filtrate.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced
Chromium (total)0.0000.000
Cyanide (total)0.0000.000
Lead0.0000.000
Nickel0.0000.000
Ammonia (as N)0.0000.000
Total suspended solids0.0000.000
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(i) Calcining caustic wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced
Chromium (total)3.9591.619
Cyanide (total)2.6091.080
Lead3.7791.799
Nickel17.27011.430
Ammonia (as N)1,199.000527.200
Total suspended solids368.900175.400
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(j) Pure chlorination wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of zirconium and hafnium produced
Chromium (total)16.8606.897
Cyanide (total)11.1104.598
Lead16.0907.663
Nickel73.57048.660
Ammonia (as N)5,108.0002,245.000
Total suspended solids1,571.000747.200
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(k) Reduction area-vent wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of zirconium and hafnium produced
Chromium (total)1.6220.663
Cyanide (total)1.0690.442
Lead1.5480.737
Nickel7.0774.681
Ammonia (as N)491.300216.000
Total suspended solids151.10071.880
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(l) Magnesium recovery off-gas wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of zirconium and hafnium produced
Chromium (total)9.1233.732
Cyanide (total)6.0132.488
Lead8.7084.147
Nickel39.81026.330
Ammonia (as N)2,764.0001,215.000
Total suspended solids850.100404.300
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(m) Magnesium recovery area-vent wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of zirconium and hafnium produced
Chromium (total)5.0682.073
Cyanide (total)3.3401.382
Lead4.8382.304
Nickel22.11014.630
Ammonia (as N)1,535.000675.000
Total suspended solids472.200224.600
pH(1)(1)

1 Within the range of 7.5 to 10.0..

(n) Zirconium chip crushing wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of zirconium and hafnium produced
Chromium (total)0.0000.000
Cyanide (total)0.0000.000
Lead0.0000.000
Nickel0.0000.000
Ammonia (as N)0.0000.000
Total suspended solids0.0000.000
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(o) Acid leachate from zirconium metal production.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of pure zirconium produced
Chromium (total)12.9705.304
Cyanide (total-8.5453.536
Lead12.3805.893
Nickel56.57037.420
Ammonia (as N)3,928.0001,727.000
Total suspended solids1,208.000574.600
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(p) Acid leachate from zirconium alloy production.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of zirconium contained in alloys produced
Chromium (total)6.9392.839
Cyanide (total)4.5741.893
Lead6.6243.154
Nickel30.28020.030
Ammonia (as N)2,102.000924.200
Total suspended solids646.600307.600
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(q) Leaching rinse water from zirconium metal production.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of zirconium produced
Chromium (total)25.93010.610
Cyanide (total)17.0907.072
Lead24.75011.790
Nickel113.20074.840
Ammonia (as N)7,856.0003,453.000
Total suspended solids2,416.0001,149.000
pH(1)(1)

1 Within the range of 7.5 to 10.0.

(r) Leaching rinse water from zirconium alloy production.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of zirconium in alloys produced
Chromium (total)0.3470.142
Cyanide (total)0.2290.095
Lead0.3310.158
Nickel1.5151.002
Ammonia (as N)105.20046.240
Total suspended solids32.35015.390
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

40 C.F.R. §421.332