Division 76
United Kingdom
For downstream dusty processes, BAT is to reduce emissions by using one or a combination of the following techniques:
| A description of the techniques is given in Section 1.10.1. | |
| Techniquef1 | Applicability |
|---|---|
| (i) Applying wet milling techniques The technique consists of grinding the frit to the desired particle size distribution with sufficient liquid to form a slurry. The process is generally carried out in alumina ball mills with water | The techniques are generally applicable |
| (ii) Operating dry milling and dry product packaging under an efficient extraction system in conjunction with a fabric filter A negative pressure is applied to the milling equipment or to the work station where packaging is carried out in order to convey dust emissions to a fabric filter | |
| (iii) Applying a filtration system | |
Table 66
BAT-AELs for air emissions from downstream processes in the frits sector, when treated separately
| The levels refer to the sum of metals present in the waste gas. | |
| Parameter | BAT-AEL |
|---|---|
| mg/Nm3 | |
| Dust | 5 – 10 |
| Σ (As, Co, Ni, Cd, Se, CrVI) | < 1f2 |
| Σ (As, Co, Ni, Cd, Se, CrVI, Sb, Pb, CrIII, Cu, Mn, V, Sn) | < 5 |
Annotations
Footnotes
- f1
-
A description of the techniques is given in Section 1.10.1.
- f2
-
The levels refer to the sum of metals present in the waste gas.