GULLY TWO-STAGE SLURRY DUMP FOR GRANULAR INDUSTRIAL WASTE Russian patent published in 2006 - IPC E02B3/16 E02B7/06 

FIELD: hydraulic building, particularly to store granular waste, for instance dressing plant residuals.

SUBSTANCE: two-stage slurry dump comprises two ground dams, which intersect valley. Lower dam defines lower basin, upper dam defines upper basin. Dump comprises hillside ditches having lower ends arranged in lower pool of lower dam, hydraulic conveyance system, water supply means, which feeds water from settling pond to industrial plant. Upper dam is located on shore wastes, which are aggregated in lower basin up to predetermined level in front of dam. Upper dam and lower dam are spaced apart a distance enough to create basin for clarified water pond forming in front of upper part of lower dam. Upper dam is permeable dam to clean water and to permit water passage from settling pond of upper vessel into clarified water pond. The clarified water pond is made as opened pool or as a basin at least partly filled with coarse draining material. The slurry dump is provided with means to increase waste load-bearing capability located at upper dam base and with means to supply water from clarified water pond to industrial plant.

EFFECT: reduced amount of building works and increased quality of reused water.

10 cl, 5 dwg