Division BAT 67: In order to reduce emissions to air of PCDD/F from a thermal oxidiser (see Section 12.1) treating process off-gas streams containing chlorine and/or chlorinated compounds, BAT is to use technique a, if necessary followed by technique b, given below.
United Kingdom
| Technique | Description | Applicability | |
|---|---|---|---|
| a. | Rapid quenching | Rapid cooling of exhaust gases to prevent the de novo synthesis of PCDD/F | Generally applicable |
| b. | Activated carbon injection | Removal of PCDD/F by adsorption onto activated carbon that is injected into the exhaust gas, followed by dust abatement | |
BAT-associated emission levels (BAT-AELs): See Table 9.1.