VARIATION OF WHITE WATER COMPOSITION IN A TMP AND DIP NEWSPRINT PAPER-MACHINE

Analysis of dissolved and suspended solids components showed the varia nts of white water composition with location on a paper machine. Sampl es came from points on the forming and press sections at a newsprint m ill using thermomechanical pulp and a mixture of deinked pulp containi ng old newsprint and old magazines. Total suspended solids, total diss olved solids, and ash content data provide a qualitative picture of th e removal of white water components from the paper sheet through the w et end of a paper machine.