| 摘要 |
<p>FIELD: cleaning of soil and ground contaminated by radionuclides and petroleum products. SUBSTANCE: device is placed in a single casing composed of two conjugated parts. The casing accommodates a separator for separation of coarse fraction in the form of an inclined-spiral-like net, classifier for ground fractionation in the form of a column, clean water washer in the form of a vertical pipe, and a catcher of fraction particles for washing located between the loading means and washer. The device is furnished with a pulse line with pulse chambers attached to the washer and bottom part of the casing. The apparatus is filled with water, low-frequency pulsations are applied providing for the necessary hydrodynamic condition of agitation, the source ground and circulating water are metered. Ground is pulped out, coarse fraction is not passed by the net, gets separated. Ground fraction that has passed through the net is classified by size in the variable-section column with an adapter. Fine fractions are lifted to the catcher and then to the clean water washer, and after cleaning - to the unloading appliance. Intermediate-size fractions are brought out from the bottom part of the apparatus casing and directed to a repeated water treatment. EFFECT: enhanced ground cleaning factor, simplified cleaning procedure. 18 cl, 1 dwg, 7 tbll</p> |
