Title 40
SECTION 421.146
421.146 Pretreatment standards for new sources.
§ 421.146 Pretreatment standards for new sources.Except as provided in 40 CFR 403.7, any new 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 new sources. The mass of wastewater pollutants in primary antimony process wastewater introduced into a POTW shall not exceed the following values:
(a) Sodium Antimonate Autoclave Wastewater.
PSNS for the Primary Antimony Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of antimony contained in sodium antimonate product | ||
| Antimony | 30.150 | 13.440 |
| Arsenic | 21.720 | 9.687 |
| Mercury | 2.344 | 0.937 |
(b) Fouled Anolyte.
PSNS for the Primary Antimony Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of antimony metal produced by electrowinning | ||
| Antimony | 30.150 | 13.440 |
| Arsenic | 21.720 | 9.687 |
| Mercury | 2.344 | 0.937 |
(c) Cathode Antimony Washwater.
PSNS for the Primary Antimony Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of antimony metal produced by electrowinning | ||
| Antimony | 60.310 | 26.870 |
| Arsenic | 43.430 | 19.370 |
| Mercury | 4.687 | 1.875 |