30 PROJECTS & CONTRACTS
Spanish mill chooses Veolia for waste water treatment
Pulp Paper & Logistics
advanced paper products, has ordered a wastewater treatment plant from Veolia Water Technologies. The Veolia AnoxKaldnes MBBR
M
process will be used to treat the Tolosa mill’s effluent, and will, it is said, exceed discharge standards required by local authorities. The project at the mill at Guipúzcoa in northern Spain is co- financed by the European Union through the European Regional Development Fund (ERDF) and the Department of Environment and Territorial Policy of the Basque Government.
March/April 2017
unksjö’s Tolosa mill in Spain, a leader in the production of
The new installation, with a
capacity of 200 cubic metres an hour, will use both the AnoxKaldne MBBR for biological treatment and Actiflo for ballasted water clarification and settling. The combination of the two
Veolia proprietary technologies will enable removal of the dissolved chemical oxygen demand (COD) and the suspended particulate matter, thus producing a high-quality effluent, surpassing current standards required for river discharge. Veolia says that the technological viability of this process was demonstrated through pilot tests it carried out in 2014, during which the design of the full-scale plant was optimised.
One of the main innovations of the system offered by Veolia is the use of the new generation of Z-MBBR carriers. The three- dimensional design allows the biofilm to grow in a controlled and protected way until reaching a predetermined thickness. The use of these supports will eliminate the biodegradable filtered COD from the water and avoid the possible formation of calcium precipitates. “One of the key factors of success in this project has been the capacity of the Actiflo process to be revamped as Actiflo Carb or Actiflo Soft processes,” says Veolia. “These Actiflo variants will allow Munksjö to anticipate new environmental requirements in
accordance with the company’s environmental standards that demonstrate its commitment and environmental awareness.” Veolia adds that AnoxKaldnes MBBR biological wastewater technology is currently being used in more than 700 locations worldwide for both municipal and industrial applications. In the paper industry, global players including ENCE, Iberpapel, Papelera Zicuñaga, SCA, Stora Enso, Alier, United Paper, Sniace or Holmen Paper have successfully used the technology. Munksjö is a worldwide service
organisation with around 2,900 employees and 15 facilities located in France, Sweden, Germany, Italy, Spain, Brazil and China.
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