| 摘要 |
<p>A process for dewatering of BCTMP/CTMP sludge, wherein said sludge comprises at least secondary sludge or primary sludge comprising bleached chemi-thermal mechanical pulp (BCTMP) waste or chemi-thermal mechanical pulp (CTMP) waste, comprising the steps of: a) adding a polyethylene oxide to said sludge, wherein said polyethylene oxide can be added before or after or simultaneous with the addition of said cationic polyacrylamide; and b) adding a cationic polyacrylamide and urea hydrogen peroxide to said sludge, wherein said cationic polyacrylamide is added to said sludge simultaneous with the addition of said urea hydrogen peroxide; and c) mechanically separating said solids from said water.</p> |
