| 摘要 |
<p>A process for preparing a solution for treating , especially drying, a sludge, especially a sewage or industrial sludge, comprises supplying a work material and at least one solvent to a preparation vessel. The vessel has a primary zone and a secondary zone, and a wall which separates them. The vessel is filled so the surface of the medium is above the primary zone inlet, and a surface flow is created which forms a funnel shape from the outside inwards. The dosed solution and/or particles are supplied to the surface of the medium. The arrangement used to carry out the process includes a powder dosing unit (30), a dosing pump (26), a powder storage unit (29), a solvent pump (8), and a distributor head (4).</p> |
