You are here:
ADVANCED FILTRATION OF PULP MILL WASTES
Citation:
McKinnon, J. ADVANCED FILTRATION OF PULP MILL WASTES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-79/209 (NTIS PB80166622), 1979.
Description:
Laboratory and pilot plants studies of reverse osmosis (hyperfiltration) and ultrafiltration of pulp mill wastes were performed by International Paper Company and Oak Ridge National Laboratory (subcontractor). Decker filtrates were treated with dynamically formed reverse osmosis membranes consisting of hydrous zirconium (IV) oxide and polyacrylic acid. Bleach plant caustic extraction filtrate (E1) was treated with dynamically formed ultrafiltration membranes consisting of hydrous zirconium (IV) oxide and hydrous silicon (IV) oxide. The units demonstrated that a properly designed system could effectively treat pulp mill wastewaters to reduce pollution loads and provide recyclable permeates. Mechanical difficulties prevented the accumulation of sufficient data for scale-up calculations, but the experience obtained will be useful to future work involving dynamic membrane systems.