Optimization of chemical aids in the process of deinking sludge thickening

• Authors: Jacek Czechowski , Konrad Olejnik
• Languages of publication: EN

Abstracts

EN

The authors have analyzed a modern technological line of the latest chemicals for the recovered paper processing and de-inking in terms of reducing the amount of wastes arising during the production. The authors have also investigated the effectiveness of selected chemical aids (coagulants and flocculants) supporting the process of sludge dewatering. 12 different types of flocculants were tested. The best chemical agent was selected as well as its optimal dosage. The highest dynamics of sludge dewatering improvement (expressed by the dewatering time under standard conditions) was observed with the ECR3 agent dosage of 6 - 6.5 kg per tonne of the absolutely dry sludge. Long-term analyses of the tested line have proved that the retention aid and its dosage were selected correctly.

Keywords

EN

paper; recovered paper; retention agents; waste; sludge; recycling

• Publisher: De Gruyter Open
• Journal: Polish Journal of Chemical Technology
• Year: 2007
• Volume: 9
• Issue: 4
• Pages: 121-123

Dates

published

1 - 12 - 2007

online

30 - 1 - 2008

Contributors

author

Jacek Czechowski

• Institute of Papermaking and Printing, Technical University of Lodz, ul. Wólczańska 223, 90-924 Łódź, Poland

author

Konrad Olejnik

• Institute of Papermaking and Printing, Technical University of Lodz, ul. Wólczańska 223, 90-924 Łódź, Poland

References

• Au, C. O., Thorn, I.: Applications of Wet End Chemistry, Blackie Academic and Professional, 1995.
• Przybysz K., Rybicki E., Czechowski J.: Electrokinetic Potential Studies of Dissolved Substances Washed Out in the Papermaking Process, Fibers and Textiles in Eastern Europe, 2002, 65 10.
• Koppermuller J.: Modern recycled fibers' preparation for packaging papers, Wochenbl. Papierfabr. 1995, 26 123.
• Doshi M., Dyer J. M.: Paper Recycling Challenge, vol. 3 - Process Technology, Doshi and Associates Inc. 1998.
• Czechowski J., Olejnik K.: "Ocena odpadów z linii technologicznej przerobu makulatury z uwzględnieniem zawartości metali ciężkich" Przemysł Chemiczny 2003, 82 1121.

Identifiers

DOI

10.2478/v10026-007-0104-x