Division 2.1.1 Emissions to air
United Kingdom
BAT 25. In order to reduce emissions to air of dust, and of particulate-bound metals, PCDD/F and dioxin-like PCBs, BAT is to apply BAT 14d and to use one or a combination of the techniques given below.
| Technique | Description | Applicability | |
|---|---|---|---|
| a. | Cyclone | See Section 6.1. Cyclones are mainly used as preliminary separators for coarse dust. | Generally applicable. |
| b. | Fabric filter | See Section 6.1. | May not be applicable to exhaust air ducts directly connected to the shredder when the effects of deflagration on the fabric filter cannot be mitigated (e.g. by using pressure relief valves). |
| c. | Wet scrubbing | See Section 6.1. | Generally applicable. |
| d. | Water injection into the shredder | The waste to be shredded is damped by injecting water into the shredder. The amount of water injected is regulated in relation to the amount of waste being shredded (which may be monitored via the energy consumed by the shredder motor). The waste gas that contains residual dust is directed to cyclone(s) and/or a wet scrubber. | Only applicable within the constraints associated with local conditions (e.g. low temperature, drought). |
Table 6.3
BAT-associated emission level (BAT-AEL) for channelled dust emissions to air from the mechanical treatment of waste
| When a fabric filter is not applicable, the upper end of the range is 10 mg/Nm3. | ||
| Parameter | Unit | BAT-AEL(Average over the sampling period) |
|---|---|---|
| Dust | mg/Nm3 | 2-5f1 |
The associated monitoring is given in BAT 8.
Annotations
Footnotes
- f1
-
When a fabric filter is not applicable, the upper end of the range is 10 mg/Nm3.