Environmental Declaration 2011 - Sappi

Waste type
Avoidance, physical or thermal
exploitation, harmless disposal
The basic principle of waste management
set out above can be easily
elucidated with a concrete example
from paper manufacturing: A by-
product in the process of coating fine
papers is the so-called coating colour
sludge containing paper coating
pigment residues, essentially calcium
carbonate.
Waste water is treated in a modern ultrafiltration
module that recovers coating
pigment residues for reuse in production.
So waste is avoided. Finest pigment
particles that cannot be filtered out are
extracted in a flocculation plant with
downstream decanter as coating pigment
Qty. fy 2011
t HW/a
Waste from the CRP 1,043.04 1.8
Old wood, waste wood 186.22 0.3
Old paper (paper, cardboard boxes, shells) 1,131.59 2.0
Ash 12,927.22 22.3
Construction waste and excavation 56.52 0.1
Decarbonisation balls 214.30 0.4
Filter gravel 107.12 0.2
Cutter shavings ESA 1,767.30 3.1
Hazardous waste 125.49 0.2
Sewage sludge 11,131.39 19.2
Plastics for utilisation 20.60 0.0
Water sludge from the river Main 3,228.23 5.6
Metals and cable scrap 653.46 1.1
FGD gypsum 4,405.14 7.6
FGD residues 0.00 0.0
Rejects from pulp production 4,348.60 7.5
Residual waste for landfill 7.12 0.0
Residual waste for thermal utilisation 232.04 0.4
Bark 12,941.80 22.3
Cinders and boiler cleaning residues 211.84 0.4
Other wastes 70.06 0.1
Coating pigment slurry 3,132.76 5.4
Total 57,941.84 100.0
16 Environmental Declaration 2011
%
slurry and the waste water cleansed in the
factory’s own water treatment plant. This
coating pigment slurry is used in the tile and
brick industry, and for manufacturing mining
packing materials. Continual investments
and process optimisations over the past five
years have steadily reduced the incidence
of coating pigment slurry to be recycled.
Waste removal structure 2011
n Thermal utilisation 37.6 %
n Disposal 0.3 %
(landfill, special waste
disposal)
n Material utilisation 62.1 %
A good example for efficient waste management
that preserves the environment and
cuts costs.
Reduction of total waste quantity
Total waste was reduced by 6 % compared
to the previous year, despite relatively higher
production, which means that the specific
waste quantity was even 11.7 % less in a
year on year comparison.
The utilisation quota remained constant at a
high level with 99.7 % of waste reused and
only 0.3 % in terms of weight needing to be
disposed in landfills or special waste
facilities.
Especially the thermal utilisation of residues
in the own heat generating plant is meaning­
ful from an ecological viewpoint, as evidenced
by a study conducted within the context of
the Bavarian Environmental Pact. * In financial
year 2011, 30.6 % of waste was thermally
utilised in the Stockstadt factory.
*„Ökoeffiziente Papierprodukte“/April 2010, Hrsg. StMUG Bayern