PAPER MILL EFFLUENT TREATMENT USING BIOFILTRATION.

The results achieved on industrial effluents from four different paper mills, ranging from highly diluted effluents from units for the production of fine papers using bleached cellulose, to much more concentrated effluents from an integrated pulp and paper plant, show the potential and advantages of the Biofor process. Implemented as a complement to or replacement for activated sludge systems, the Biofor® process, which dispenses with the clarification step and offers excellent resistance to sudden load and flow rate variations, is particularly well suited to the needs of this industry. This explains the rapid success already achieved in Europe and expected soon in North America. [ABSTRACT FROM AUTHOR]