Methods for calculating the balance during the period of draw-off, drainage of sludge collector cells and construction of secondary embankment dams

An industrial waste-phosphogypsum-is formed in the production of phosphorus mineral fertilizers. As is well-known, issues processing and utilization phosphogypsum on an scale remain unsolved. Consequently, waste generated at chemical plants stored various types storage tanks. The currently used hydraulic method provides for supply form a slurry into dump cells, their sequential dehydration dump, subsequent development part construction secondary dams. However, due to low water-release properties phosphogypsum, it impossible ensure its required degree, large volumes, period. Therefore, designs watertight diaphragms drainage devices are provided sludge collector accelerate process strata. balance should be assessed two periods: initial period when cells filled, bounded by primary dam, reservoir built up erecting dams from material. In period, operating mode divided stages: first stage, pond above layer with certain predetermined depth; second this depth water kept constant spillways. build-up preceded cell preparation, namely: draw-off moisture content suitable dam filling normal operation mechanisms This article presents results filtration studies collectors impermeable screen (made polymer film, asphalt-polymer concrete, etc.) system. calculating methods determination parameters described: pulp stops, clarified H 0 drawn off.