BVT-Merkblatt zu Abwasser- und Abgasbehandlung

Annexes
§ 5. To guarantee compliance with the emission limit values for nitrogen oxides of art. 5.20.2.2,
more appropriate technical construction conditions can be imposed in the environmental licences.
If from control measurements it appears that the emission limit value is not being complied
with due to unforeseen circumstances, the operator must take all suitable primary measures to
ensure compliance with the emission limit values as soon as possible. The operator must report
this to the Environmental Inspection Department together with the mentioning of measures
taken for improvement. The European Commission is to be immediately informed through the
usual channels of such events, as well as of the work carried out for improvement.
Section 5.20.3 Installations for the dry distillation of coal (coke ovens)
Art. 5.20.3.1 Underfiring, coke oven gas and heating installations
§ 1. Reference value
The emission values for waste gases from heating concern a volume level of oxygen in the
spent gas of 5 %.
§ 2. Coke oven gas and fuel
As a derogation from the general emission limit value for SO2 as specified in article 4.4.3.1, the
weighed average of the mass concentration of sulphur compounds in the gas from the underfiring,
as well as in the gases originating from the coke ovens used as fuel, may over a calendar
year not exceed 0.80 g/m 3 expressed in sulphur.
§ 3. Nitrogen oxides
With the first time of measuring, the emissions of nitrogen monoxide and nitrogen dioxide in
the gaseous effluent from the underfiring may not exceed 0.50 g/m 3 expressed in nitrogen dioxide.
The best available techniques to reduce the increase of emissions due to ageing must be
applied.
The measurements to be conducted for the first time after foundation or significant modification
must be carried out after the installation has reached uninterrupted operation, but at the
earliest after three months in operation and at the latest twelve months after being in operation.
Art. 5.20.3.2 Filling the coke ovens
With the unloading of the coal from the coal bunker in the larry car, dust emissions must be
avoided.
The filling gases must be collected.
When dumping, the filling gases must be transferred to the raw gas or an oven close by to the
extent possible, with the further processability of the raw coal tar in mind.
With stamping, the filling gases must be transferred in the raw gas to the extent possible.
Filling gases which cannot be transferred must be taken to an incineration facility. Dustcontaining
emissions in the gaseous effluent of the incineration may not exceed 25 mg/m 3 .
With the levelling activities with the dumping of coal, the emissions of filling gases must be
reduced by the sealing of the levelling opening.
Art. 5.20.3.3 Filling opening covers
Emissions with filling opening covers must be avoided to the extent possible, for example by
using filling opening covers with large sealing surfaces, coating the filling opening covers will
loam each time after filling the ovens and the regular cleaning of the filling opening frames and
filling opening covers before the filling openings are closed. Coal remains must be regularly
removed from the oven roof.
Waste Water and Waste Gas Treatment 405