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Solid waste is managed according to the 3R system - reduce, reuse, recycle - and is divided into hazardous and non-hazardous categories, each processed accordingly. Incineration of all bark and wood waste - considered more as by-products than wastes - is critical to our mill’s central energy balance.

We have worked for many years to secure useful outlets for all of the other wastes arising from our operations. Our range of solid process wastes, and their re-use and/or disposal pathways are as follows:

WWTP sludges – 34,957 tonnes (2008) / 33,9556 tonnes (2009)
Processing into compost or firing in boilers

Boiler ash – 73, 179 tonnes (2008) / 49,226 tonnes (2009)
Use as forest fertiliser and peat-land pH correction

Coal fly ash – 87,743 tonnes (2008) / 129,090 tonnes (2009)
Cement manufacture, road sub-base, forest fertiliser and peat-land pH correction
Balance sent to landfill – 34,580 tonnes (2008) / 35,369 tonnes (2009)

Boiler sand & bottom ash – 69,458 tonnes (2008) / Used for ground and road consolidation in forests

Dregs & Grits – 84,448 tonnes (2008) / 24,571 tonnes (2009)
Use for peat-land pH correction
Balance sent to landfill  - 7,686 tonnes (2008) / Nil (2009)

Knots & reject pulp – 30, 947 tonnes (2008) / 7041 tonnes (2009)
Sale as low-grade fibre, and composting or incineration in boilers

Lime mud and CaO rejects – 4,592 tonnes (2008) / 24 tonnes (2009)
Use for peat-land pH correction

We are proud that we managed to reduce our total waste disposal to landfill to around 35,000 tonnes in 2009, and are seeking new ways to achieve further reductions. Many of the wastes listed above would need to be considered as hazardous waste, if licensed beneficial outlets for them could not be found.

Hazardous Waste

Solid hazardous decreased markedly in 2009, as additional useful outlets were found for many of the materials. Oil-based liquid hazardous wastes can now be routinely disposed of by incineration, on-site, and this resulted in a 67% reduction in the quantity of these hazardous (B3) liquid wastes requiring licensed off-site disposal, in 2009.