| 摘要 |
PROBLEM TO BE SOLVED: To provide an economical slime-controlling and deodorizing method in a papermaking process. SOLUTION: The method for sterilizing and deodorizing water for the papermaking comprises adding a high-concentration aqueous solution of sodium hypochlorite in a hydrochloric acid condition, having pH≥4 and 1,000-10,000 ppm, preferably 2,000-8,000 ppm effective chlorine concentration to a water tank for a white water system or a recovered scum system, and regulating the effective chlorine concentration of the water so as to be 100-10 ppm. The method enables the reduction of the papermaking slime or deodorization to be achieved at an economical cost. The water for the papermaking after addition is effective even in a neutral region but is preferably used in a weak acidic region. COPYRIGHT: (C)2006,JPO&NCIPI
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