Hallsta Paper Mill manufactures MF Magazine and book paper from thermo-mechanical pulp (TMP). The mill is located in northern Roslagen on Edeboviken, an inlet of around 10 km long that opens out into the Baltic Sea.


Environmental activities in 2016

The start of the year was notable for work on restoring and re-starting the TMP plant after the major fire in November 2015.

After the new area for composting sludge for fibre soil reinforcement had been completed, operation began, and ready-made fibre soil reinforcement was supplied in the second half of the year.

Capping of the Rya landfill continued during the year, and altogether around 70 per cent of the total surface has now been covered.

All limits for emissions to water were complied with. The monthly guide values were exceeded on several occasions during the spring in connection with adjustment of the treatment plant when the factory was re-started after the shutdown due to the fire. Chemical precipitation was carried out in wastewater treatment during some short periods to deal with the situation during the spring and early summer. Some guide values were exceeded at the end of the year as major problems occurred in the treatment plant at the end of the month.

The closure plan for Ehnsjö 3 submitted back in 2011 has been rejected by the county administrative board. The decision has been appealed to the Land and Environmental Court, whose ruling is awaited.

Work on more clearly integrating environmental, energy and health & safety work into the company's management and the mill's day-to-day operations continues. A key area where the mill is working on improvements is a continued focus on targets, including the drawing up of critical success factors, action plans and target follow-up.

Permits for operation

Hallsta Paper Mill holds a permit for its operations granted under the Environmental Code in 2000. There has been a separate permit for the composting of sludge for fibre soil reinforcement and storage of bark at Norra plan since 2015. Norra plan is an area previously used for storing wood.

Hallsta Paper Mill also has three water judgments from 1930, 1955 and 1979 governing the permit to meet demand for process water from the nearby lake system.

Hallsta Paper Mill has been covered by the rules on fossil carbon dioxide emissions trading since 1 January 2005. The mill holds a permit for emissions of greenhouse gases for the new trading period 2013–2020.

Starting with the 2015 Environmental Report, the mill's outcomes and status is compared with current BAT conditions. This is in line with the EU's Industrial Emissions Directive.

Environmental certifications

The environmental management system has been certified to ISO 14001 since 2001.

The energy management system has been certified to SS 62 77 50 since 2005 and to the new international standard ISO 50001 since 2011.

The health and safety management system has been certified to OHSAS 18001 since 2012.

Hallsta Paper Mill has held FSC® and PEFCTM certification for the traceability (chain of custody) of wood raw material since 2007.

All products from Hallsta are approved to carry the EU Ecolabel.

Investments/environmental measures

A key investment completed in 2015 with a green focus was the setting up of a 4-hectare area for sludge composting and bark storage. As a result of completion, full-scale composting of sludge began in 2016 and the area was also used for storing bark during the summer period.

A preliminary project to draw up a proposal for a more cost-effective and better process solution for wastewater treatment was carried out during the year.

Work aimed at creating better conditions to optimise the process in terms of energy continued during the year, and the following measures have been implemented.
- New starch boilers have been installed to reduce the need for steam production with electric boilers, producing a saving of around 5 GWh/year.
- Heat transfer on Line 11 has been improved by installing a new heat exchanger.
- A new, larger motor has been installed on one of the RTS lines in TMP 3. This has enabled pulp production to be increased and made more efficient on this line.

Dredging in the harbour basin and in the fairway close to the harbour continued and was completed in 2017.

Disruptions to production and complaints

All limits for emissions to water were complied with. The monthly guide values were exceeded on several occasions during the spring in connection with adjustment of the treatment plant when the factory was re-started after the shutdown due to the fire. Chemical precipitation was carried out in wastewater treatment during some short periods to deal with the situation during the spring and early summer. Some guide values were exceeded at the end of the year as major problems occurred in the treatment plant at the end of the month.

Follow-up of environmental and energy targets in 2016

In 2016, there was a target to make more efficient use of resources and to increase capacity utilisation on the production lines. The utilisation of capacity has a major impact on resource efficiency in terms of energy, water and chemicals. The outcome for the efficiency of the factory's paper machines was very good during the year, and represented a marked improvement on the previous year. An impressive record was set in November, when the two paper machines achieved 89 per cent efficiency. This is no less than six percentage points above the target level for the year of 83 per cent.

The specific energy target for 2016 was to lower total specific energy consumption by 1 per cent compared with the outcome for 2015. This target was met by a clear margin from April onwards (after the impact of the fire).

An internal target for Hallsta Paper Mill is for emissions to be kept 20 per cent below the current limits. The mill has limits for emissions to water of suspended solids, organic material, phosphorus, nitrogen and EDTA (complexing agent). The target of a 20 per cent margin below the current limits was not achieved for all parameters. The principal reason for this was the start-up and adjustment problems that arose in wastewater treatment during the spring when PM 11 was restarted.

Planned environmental and energy measures in 2017

Replacement of motors by new motors with higher outputs will continue in TMP in 2017. It is planned that another four motors will be installed over the next few years, aimed at increasing production on selected lines and consequently reducing specific electricity use. It is estimated that replacing five motors in TMP 3 will result in a reduction in electricity use of 40–50 GWh/year.

Several smaller investments to improve stability and quality will also be made in the TMP plants. It is also planned that measures will be taken to provide a better overview of electricity use by the mill.

Implementation of the above plan for process improvements in wastewater treatment will start in 2017.

Environmental and energy targets in 2017

Work will continue in 2017 on making more efficient use of resources, with a focus on increasing utilisation of capacity on the paper machines.

The mill's total specific energy consumption will also continue to be monitored as an overall objective. A further 1 per cent decrease in energy consumption is the target, and implemented energy saving measures will be followed up.

Holmen AB, P.O. Box 5407, SE-114 84 Stockholm, Sweden.

Visiting address: Strandvägen 1, Stockholm.

Tel: +46 8 666 21 00  E-mail: info@holmen.com

  

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