Water reuse in the pulp and paper industry: evaluation of four microfil tration applications

摘要

This paper describews four potential applications for microfiltration membrane processes in the recycling of specific liquid streams in pulp and ppaer mills.Each type of effluent was tested on a bench scale device:1) old newsprint (ONP) de-inking effluent containing flexographic ink; 2) effluent from a paper coating oepration; 3) effluent from a bleached chemi-thermo-mechanical pulp (BCTMP) mill; 4) effluent from a board mill using recycled old corrugated container (OCC).The first three were tested using a submerged microfiltration module,and hte last using a submerged microfiltration membrane bio-reactor.