AURO Environmental Declaration 2014 - page 15

Environmental aspects
mine the total annual emission of odorous materials. On a
long-term basis, the odour emissions can be reduced by
optimising formulations and improving the process technol-
ogy (closed systems).
Further aspects to be considered are energy emissions in the
form of discharged heat and acoustic noise. Except for those
originating from the heating plant, they cannot be quanti-
fied. However, the levels are very low, so no measurements
have been made and none will be made. Noise is pro-
duced at the seven exhaust air shafts because the
fan motors are on the outside. However, the
noise which they produce is perceptible only
on windless days. The noise origination
from the urban motorway close to the
site is much greater.
Thermal discharge is produced by the
gas-powered 250 kW condensing gas
boiler (exhaust gas temperature: 53 °C)
of the heating plant, by the steam generator
(exhaust gas temperature: 143 °C) and by the
boiler used for the production of plant paint pigments.
Moreover, heat is discharged with the room air through
the exhaust air shafts.
As from the year 2007, AURO is annually certified as CO
company by the Climate Neutral Group.
Catch pans within the production and storage areas prevent
escape of liquid raw materials out of the buildings and into
the soil in the case of leakage of the storage containers. The
storage hall 7, erected in 1992 and provided with a transfer
location equipped specially according to the WHG (water
resources legislation), ensures that there is no danger to the
soil or water resources when transferring raw materials and
products. All drains in the production and storage areas are
sealed, so that on these routes too it is impossible
for raw materials and products to escape into
the canalisation. Further facts on the
subject of the soil are considered
under “Production site - key figures”.
Hydrocarbons of vegetable-origin are released
directly into the environment when processing
essential oils in large quantities. Measurements
made in the seven exhaust air shafts have shown
that about 1400 kg total hydrocarbons are emitted
annually. This means that the emission lies considerably
below the maximum mass current of 3 kg/h (measurement
obligatory) permitted according to the legislation TA Luft 86.
The seven exhaust air shafts discharge annually a total
quantity of 21 million m
room air. The odour substance
concentration fluctuates between 0 and 1820 GE/m
(GE = odour units) of exhaust air. It is not possible to deter-
...for future generations.
...and clean air...
Intact soil...
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