... pulping process used in paper and paperboard production. (USEPA, 1995). Processes in the manufacture of paper and paperboard can, in general terms, be split into three steps: pulp making, pulp ... debarking and chipping), CTMP process operations (pulping, pulp screening, pulp washing and thickening, bleaching, kraft repulping), Paper machine operations (wet end operations), and Other ... primary paper and paper board products divides itself along pulping process lines: chemical pulping, mechanical pulping, and semi-chemical pulping. The products of the pulp and paper industry can...