Division 1.3.3.1.1 Channelled dust and fluoride emissions

United Kingdom

The associated monitoring is in BAT 10.

Descriptions of the techniques are given in Section 1.10
	Technique^f1	Applicability
a	Dry scrubber using alumina as the adsorbent agent followed by a bag filter	Generally applicable
b	Dry scrubber using alumina as the adsorbent agent followed by a bag filter and a wet scrubber	Applicability may be limited in the following cases: very high off-gas flow rates (due to the significant amounts of waste and waste water generated) in arid areas (due to the large volume of water necessary and the need for waste water treatment)

Descriptions of the techniques are given in Section 1.10

Technique^f1

Applicability

Dry scrubber using alumina as the adsorbent agent followed by a bag filter

Generally applicable

Dry scrubber using alumina as the adsorbent agent followed by a bag filter and a wet scrubber

Applicability may be limited in the following cases:

very high off-gas flow rates (due to the significant amounts of waste and waste water generated)
in arid areas (due to the large volume of water necessary and the need for waste water treatment)

BAT-associated emission levels: See Table 11 and Table 12.

Table 11

BAT-associated emission levels for dust and fluoride emissions to air from electrolytic cells

Parameter	BAT-AEL (mg/Nm³)
As a daily average or as an average over the sampling period.
As an average over the sampling period.
Dust	2-5^f2
HF	≤ 1,0
Total fluorides	≤ 1,5^f3

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