Barents Environmental Hot Spots
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Hot spotKoryazhma branch of Ilim Group JSC (Old name of the Hot Spot: Kotlas Pulp and Paper Mill)
RegionArkhangelsk Oblast
SectorIndustrial sector
Reason for being a hot spotOne of major air polluters in Oblast, particularly with specific contaminants, such as methyl meracptane. Largest waste water discharger in Oblast (almost 50%). Discharge of large amounts of organic and suspended matter strongly impacts on the aquatic ecosystem. Significant increase of lignosulphonates of particular concern.
Status in elimination procedureExcluded from the list
Environmental status in 2003 reportTotal emissions to air: 12 296 t/year, including 45 t of methylmercaptan and 481 t of hydrogen sulphide. Total discharges of pollutants to water: 124 347 t/year.
Present statusIn 2013: Total yearly emissions to air: 11 028 t. Total discharges of pollutants to water: 15 778 t/year. In 2011 reported 15.5 t of methylmercaptan and 33.9 t of hydrogen sulphide.
Joint projects 
Actions doneUpgrading soda recovery boiler units and electric filters, upgrade of a lime recovery kiln, construction of a new evaporation station with condensate treatment and recycling of sulphur compounds, upgrading gas treatment, shutting down the rayon pulp production, improved control of emissions. Modernisation of waste water aeration system and secondary clarification units, installing press filters in sludge treatment, improvements in water recycling and capturing of fibres from the wastewater, elimination of discharges of untreated water, upgrades at wastewater outlets, improvements in monitoring.
OwnerIlim Holding SA
AddressKoryazhma, ul. Dybcyna 42