| 摘要 |
A waste sludge treatment process, in which a solid additive (2a, 2b) is mixed into sludge (1) introduced into said process, and the resulting mixture is further treated (4-12) to produce solid products (11), is characterized in that the solid additive includes aggregate-like hydrophobic grains of peat, which may make up at least one half of the solid additive. The mixture is further treated advantageously by means of extrusion (6), using a method that makes it possible to remove water extracted from the extruded material. The produced particles are hardened and made hygienic by essentially preventing bacterial action within them. For this reason, the particles are coated with a coating formed by a mixture of lime and water on ash and water.
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