| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a deinked waste paper pulp, reducing a discharged water load in a deinked pulp production by not performing an alkali soaking, and also improving the de-inking property in a cellulase treatment by an ozone treatment as a pre-treatment. SOLUTION: This method for producing the deinked pulp of printed wastepaper including the cellulase treatment process, is provided by performing the ozone treatment at≥15% pulp concentration directly before the cellulase treatment as the pre-treatment for the cellulase treatment, and without including the alkali soaking process. COPYRIGHT: (C)2003,JPO
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