MYTILINEOS HOLDINGS - SUSTAINABILITY REPORT 2013 - page 31

T
he table below summarises the impacts of our activity on biodiversity and the methods used to manage these impacts in the Metallurgy &
Mining sector and the Energy sector.
5.9 MANAGEMENT OF IMPACTS ON BIODIVERSITY
SIGNIFICANT DIRECT AND INDIRECT IMPACTS
ON BIODIVERSITY
Impacts on biodiversity
from the Group’s
activities
Management of impacts
on biodiversity from the
Group’s activities
Metallurgy & Mining Sector
Possible impact on the local flora and fauna from dust emissions.
within a dispersion radius of: (a) The area for the disposal of baux-
ite residues, (b) the alumina electrolysis process, (c) the combus-
tion of fuel oil, (d) the chimneys of the alumina heating kilns and
(e) coal (coke – baked anodes dust) from the chimney of the an-
odes baking furnace and the systems for the removal of dust from
the plant’s anode line.
Possible impact on marine organisms from the discharge to the sea
of wastewater from the process for cooling the CHP unit using sea-
water.
Dust emissions:
Scheduled maceration, especially during the summer or during low-
humidity periods in general.
Coverage of slopes with topsoil, after carrying out relevant tech-
nical studies.
Completion of a large-scale water-engineering project to capture
and retain rainwater within the area designated for the disposal of
bauxite residues, so that it can be discharged in a controlled way
without adverse impacts.
Energy Sector
Power plants producing electricity from wind en-
ergy (Wind farms) which are located adjacent to
an area protected by law, are environment-
friendly, with zero pollutant emissions, zero
soil pollution and negligible disturbance of the
local flora and fauna.
Full compliance with the environmental legisla-
tion in force, in the context of the restrictions and
special conditions imposed regarding the opera-
tion of the company’s thermal power plants and
RES plants. It is pointed out that the environ-
mental legislation also includes the legislative in-
struments on the protection of the environ-
ment.
29
MYTILINEOS GROUP: TOTAL WASTEWATER QUANTITIES
Metallurgy &
Mining Sector
Energy
Sector
Quantity
(m
3
/year)
Washing / Cooling
of industrial
installations:
351,065
Washing of
machinery and
mining site
workshop ramps:
6,800
Use of industrial
service water in the
electricity
production process:
43,772
Treatment
Method
Primary treatment (settlement
of floating particles, filtration
of supernatant fluid,
chlorination, discharge).
This waste is led to a line of
three successive natural
separation tanks.
Preliminary treatment and
disposal to a liquid waste
treatment plant of MOTOR
OIL. These discharges are fully
cleaned in order to be made
available for further use.
Destination
Water systems: Discharge to the sea,
following a licensed procedure as provided
for by Environmental Terms Approval
Decision Amendment of 08-08-2011, issued
by the competent Directorate of the Ministry
of Environment, Energy and Climate Change.
The quantity of water obtained from the
third tank as runoff (overflow) undergoes
chemical analysis in order to be approved as
suitable, and is used for watering the
rehabilitated areas.
Water systems: Discharge to the sea,
following a licensed procedure in
accordance with the applicable
Environmental Terms.
Used by another
organisation
No
No
Yes
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