Environmental activities in 2016
All limits for emissions to water and air as set out in Braviken's environmental permit were complied with in 2016. A guide value for emissions to water of organic matter (COD) was exceeded in June. No complaints about the site were made by the public and no disruptions to operations or similar incidents occurred on the site that could lead to adverse effects on people and the environment.
To improve water treatment at Braviken, a project has been started in which two part-streams of the process water will be treated in a closed existing microflotation unit in the mill's recovered paper plant. Organic matter (COD) is removed by microflotation, part of the process water will be re-used in the process and another part will be conveyed to the Braviken water treatment plant. Both a reduced level of organic matter (COD) and a reduced flow rate to the water treatment plant are expected to lead to more effective water treatment. This work began in the autumn of 2016, and it is planned that the equipment will be commissioned in the first quarter of 2017.
Optimisation of steam production during periods with a low need for steam (principally during the summer months) led to a decrease of around 10 per cent in supplied energy (principally recovered wood) in 2016 compared with 2015. Excess production of steam (blowing-off of steam) was consequently around 70 per cent lower in 2016 than in 2015.
Braviken has spent many years minimising its combustion of oil, and has brought its oil consumption down from around 25 500 m3 in 2005 to around 5 000 m3 in 2016, representing a cut of approximately 80 per cent. The fall in oil consumption is largely attributable to improvements in the operational strategy for Braviken's steam system, greater efficiency in the solid fuel boiler and increased steam recovery from the production of thermo-mechanical pulp. The mill's needs for steam and heat can now usually be met by steam recovery from the production of thermo-mechanical pulp and from the burning of biofuel. Braviken's oil-fired boiler is primarily used during shutdowns of the solid fuel boiler for maintenance.
Energy integration between the mill and nearby Braviken Sawmill was implemented in 2010, making it possible to meet the sawmill's heat energy needs. The sawmill supplies chips to the mill that are used in the production of paper, which cuts down on the need for transport, among other benefits. The sawmill also supplies the mill with biofuels.
Permits for operation
Braviken Paper Mill holds a permit for its operations granted under the Environmental Code in 2002. The mill is covered by the rules on fossil carbon dioxide emissions trading, under which it holds a permit for carbon dioxide emissions and has been allocated emission allowances for the period 2013–2020.
The environmental management system has been certified to ISO 14001 since 1999.
The energy management system has been certified to ISO 50001 since 2012. Before that, the energy management system had been certified to SS 62 77 50 since 2006.
Braviken Paper Mill has held FSC® and PEFCTM certification for the traceability (chain of custody) of wood raw material since 2008 and 2009 respectively.
In 2013, Holmen Paper had its graphic paper approved to carry the EU Ecolabel. Products awarded the EU Ecolabel meet the ecolabel's criteria concerning the manufacturing process in terms of certified wood raw material, chemical consumption, energy consumption and emissions to air and water.
Braviken's products fulfil the requirements for Nordic Ecolabelling of paper products.
Disruptions to production and complaints
A guide value for emissions to water of organic matter was exceeded in June. In February, operation of sludge dewatering equipment was disrupted at the mill, leading to a temporary increase in emissions to water, primarily of suspended solids, but within the guide value for the month. Remedial action was taken on the equipment. No complaints concerning the mill's operations were received from the public during the year.
Investments/environmental and energy measures
Rerouting of pipes in order to be able to treat partial flows of the process water in the closed existing microflotation unit in the mill's recovered paper facility. This work began in the autumn of 2016, and it is planned that the equipment will be commissioned in the first quarter of 2017.
Follow-up of environmental and energy targets in 2016
Braviken is to help reduce the impact that fossil carbon dioxide has on the environment. Braviken had a target for 2016 of limiting oil consumption to a maximum of 3 000 m3.
Oil consumption for 2016 was around 5 000 m3, and the target was not met. This was due to more shutdowns of the solid fuel boiler (wood fuels) for maintenance than planned. During shutdowns of the solid fuel boiler for maintenance, the mill's oil-fired boiler was used.
Braviken had a target for 2016 of reducing specific electricity consumption for the production of thermo-mechanical pulp to less than 2 250 kWh per tonne of pulp. This target was achieved. Specific electricity use for the production of thermo-mechanical pulp for 2016 was 2 200 kWh per tonne of pulp.
Planned environmental and energy measures in 2017
Work on minimising the use of oil to meet the mill's steam and heat needs will continue into 2017. A considerable portion of the mill's steam and heat needs will be covered by steam recovery from the production of thermo-mechanical pulp and from the combustion of biofuel.
There are plans to optimise steam production during periods of low steam demand (summer months).
Environmental and energy targets in 2017
Braviken has targets relating to energy efficiency, oil consumption and water usage. Braviken has managed to reduce its oil consumption and the mill continues to focus on keeping its oil consumption low. The energy targets are intended to reduce the use of electricity and heating and to increase heat recovery.
Braviken is to help reduce the emissions of fossil carbon dioxide. Braviken has a target for 2017 of limiting oil consumption to a maximum of 3 000 m3.
Braviken has a target for 2017 of reducing specific electricity consumption for the manufacture of paper 2.7 MWh per tonne of paper.
Braviken has a target of reducing water consumption to 15 m3/tonne of paper.