CircleToZero* -TOWARDS ZERO EMISSIONS AND ZERO WASTE

CircleToZero is the global ANDRITZ initiative to achieve zero emissions and zero waste while creating sustainable financial growth for our customers. For pulp and paper customers it means eliminating unused industry side streams, turning them into new value-added products and achieving zero waste and zero emission production.

Opportunities for elimination, reduction, and re-use in and outside the mill:

Gaseous side streams	CircleToZero opportunities
Nitrogen oxides	NOx reduction technologies
Sulfur dioxide	SO2 removal technologies
Odorous gases	Odorous gas handling and treatment
Carbon dioxide	BioCO2 utilization with hydrogen to produce biomethanol

Solid side streams	CircleToZero opportunities
Dregs and Grits	Source of alkali Conversion into fertilizers by removing hazardous components
Sludge	Conversion into pellets New product development
Ash and Gasifier bottom ash	Purification and re-use outside the mill Gasifier bottom ash as new raw material
Lime mud	Purification and re-use Source of alkali

Liquid side streams	CircleToZero opportunities
Filtrates	New strategies to handle filtrates Recirculation of purified filtrates Reduced fresh water usage that is aiming towards Zero liquid discharge mill
Raw methanol	Purification and re-use in and outside the mill New revenue generation
Condensates	Re-use of condensates Fresh water usage reduction
Sulfate rich streams	Extraction of sulfate to reduce the fresh water usage
Crude Sulfate turpentine	Purification and re-use outside the mill New revenue generation

For a better tomorrow. FOR THE CHANGE.

* Trademark of the ANDRITZ GROUP. For information regarding ownership and countries of registration, please visit www.andritz.com/trademarks

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SPECTRUM NOW MAGAZINE

SPECTRUM NOW MAGAZINE

Read success stories of several projects in the pulp, paper and power industry.

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New Podcast about Klabin’s Puma Mill available now!

Is this the very best showcase of sustainability at an integrated pulp and paper mill?

Reduce carbon footprint in pulp mills

Biomass Gasification for Lime Kilns — Going fossil fuel free is an urgent sustainability topic that has become even more critical due to the current global energy crisis. It is clear we must reduce our dependence on fossil fuel.

GOING FULL CIRCLE Sulfuric Acid Production for Puma I and II

Brazilian pulp and paper giant Klabin is further closing the circular sustainability loop at its Puma I and Puma II projects in the south of the country. Soon it will be making its own sulfuric acid from captured non-condensable gases at its Ortigueira mill site. ANDRITZ expertise is paving the way.

Biomethanol– forming a circular bioeconomy at pulp mills

Over recent times pulp mills have become much more than simply “tonnes per year” in terms of revenue. First came the added extra of energy and district heating, then extracts of tall oil and turpentine, now all sorts of areas for extra revenue are being identified at pulp mills. As a clear example – and with the help of ANDRITZ – Swedish market pulp giant, Södra, recently started up the world’s first biomethanol plant at its Mönsterås mill in Sweden.

Circle To Zero – Towards Zero Emissions and Zero Waste at Pulp and Paper Mills

CircleToZero™ is a global ANDRITZ initiative with the goal of achieving zero emissions and zero waste at the same time as creating financial growth for customers. For pulp and paper producers, this means eliminating unused industry side streams, turning them into new value-added products and achieving zero emissions and zero waste production.