| 摘要 |
<p>1. A process for removing sludge from bodies of water and/or preparing watery sludges of this kind, inorganic constituents of the sludge, such as stones, gravel, sand or the like, and organic constituents of the sludge, such as wood, roots or the like, being separated from one another, constituents above a particular size being separated out in a first step separately by inorganic and organic constituents, purified and supplied to further processing, whereafter in a second step the inorganic constituents above a minimum size are separated out from the residue of the first step, purified and also supplied to further processing, whereafter in a third step the inorganic and organic turbidities of the remaining constituents are dewatered and the resulting thick sludge and the outflowing water are further processed or removed, characterised in that the inorganic and organic turbidities arising between the second and third steps are concentrated, the light and non-concentrated organic constituents of the turbidity being supplied directly to the third step with or without intermediate storage while the concentrated constituents of the turbidity are given alternative further treatment.</p> |
