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WEDECO designs and manufactures state-of-the-art

ozone systems for pulp bleaching and water treatment.

Numerous pulp factories worldwide are now equipped

with large scale ozone bleaching systems to meet the

market demand for high quality pulp while conforming

to increasingly strict environmental regulations. With

more than 20 years experience in the manufacture and

application of ozone systems, WEDECO is the clear

choice of the pulp and paper industry for reliable, 

efficient, cost-effective ozone technology.

A reputation for quality

WEDECO attained its status as an ozone industry

leader by producing the highest quality, most reliable

and efficient equipment on the market. This is a direct

result of our years of experience and continuing

commitment to product and process improvement. As

an organization WEDECO maintains certification by the 

DIN EN ISO 9001 and DIN EN ISO 14001 quality 

management system.

Research and development

To ensure that our products and processes continue to

lead the way in quality and efficiency, WEDECO invests

heavily in research and development activities. 

Combined with a highly talented staff of scientists and 

engineers this ensures that WEDECO will remain in

front in this rapidly changing field. For the pulp and 

paper industry, WEDECO is developing customer 

specific solutions to maximise the benefit of ozone 

bleaching and waste water treatment within the overall

production process.

A comprehensive array of services

• Project specific design, engineering, and production

• Initial start-up and operator training

• Full-service maintenance packages

• Own and 0perate (BOO) and operating contracts

• Oxygen/ozone “over the fence“ capabilities

Ozone Systems
Pulp and Paper

Reliable ozone systems for high quality 
pulp and paper production

Pulp factory Oy Metsä Rauma/Finland where the world largest ozone
system is installed, producing 420 kg/h ozone for pulp bleaching

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200

WEDECO/SCHMIDDING
Standard ozone
generator

WEDECO/SCHMIDDING
EFFIZON  HP ozone
generator

Ozone concentration [wt%]

Rel.energy consumption [%]

at constant oxygen throughput

Traditional
Ozone generator

®

Performance diagramm of WEDECO ozone 
generators