2011 Environmental Statement 1.8 MB - Sappi

gram of project Energy Transition Paper
Chain, researchers are investigating practicable
innovations that add value to the raw materials
currently in use by the paper industry.
Today, production of fatty acids is countered
by adding biocides. This slows acid formation
down to a point where those acids that are
still being produced can be broken down in
the waste water purification process. In the
context of project Waterwaarde a pilot installation
has been built to isolate fatty acids from
paper industry process water and locate the
best suited point in the process to do so.
In 2011, research was conducted on possibilities
to isolate fatty acids at an early stage of
the production process, during stock preparation.
Sappi Nijmegen has participated in
this research. More information is available at
www.kcpk.nl
In 2012, additional research will be conducted
on reducing the loss of fatty acids in
the coating kitchen and other components of
the production chain.
3.3.3 Nitrogen (N) and Phosphor (P) in
waste water
Target (related to composting)
Use of waste nutrients as of 2012
Measures implemented / measures planned
/ status in this plan period
Sappi Nijmegen BV’s water purification plant
and the sewage water purification installation
owned by Waterschap Rivierenland are both
located in the industrial area of the city of
Weurt, Jonkerstraat, Industrial Zone West Kanaaldijk.
The two plants are on adjacent lots.
As the waste water from paper production is
not rich enough in nitrogen (N) and phosphate
(P) to ensure proper natural purification,
both elements are added in the waste
water treatment process, in a mix of nutrients
purchased for this purpose and added in prescribed
dosages.
The adjacent, municipal waste water treatment
plant, with a capacity of 400,000 pollution
units, processes domestic waste water
from the city of Nijmegen and the surrounding
villages, which, as is generally true for domestic
waste water, contains a relatively high
proportion of N and P, released in different
phases of the purification process and ending
up in a mixed stream.
An idea has been worked out to use this nitrogen
and phosphor containing mixture in
the waste water treatment plant at Sappi Nijmegen.
In 2011, requests for a license and
financial support have been submitted and a
first agreement has been reached. It is expected
that technical realization will start in
the spring of 2012.
3.4 Waste material
Waste material is collected separately, according
to procedures in the environmental management
system. Every month, data on
waste material, both quantitative and qualitative,
are reported internally.
3.4.1 Purification sludge
Target (related to disposal)
Maintaining performance level of 2010
Status of measures in this plan period
During the last plan period, 2003-2010, purification
sludge volume has been reduced
from 42 kg/tons to 20 kg/tons. Further reductions
are not expected for this plan period.
The increase in 2011, as compared to 2010,
is caused by poor runability on the paper machine,
leading to high losses of material in the
months of May and June.
Environmental Statement 2011 25