| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a kraft pulp containing a treatment process capable of treating condensed water with a high degree of contamination .SOLUTION: Provided is a method for producing a craft pulp containing: a digestion step where wood chips are digested; a concentration step where a black liquid generated in the digestion step is concentrated using an evaporator to obtain a concentrated black liquid and condensed water; a step where the condensed water is at least subjected to anaerobic treatment to obtain treated water; and a step where a pulp derived from the wood chips is cleaned using the treated water.SELECTED DRAWING: Figure 1 |
