METHOD FOR UNDERGROUND DISPOSAL OF LIQUID RADIOACTIVE SILICON-CONTAINING WASTES Russian patent published in 2012 - IPC G21F9/24 

FIELD: physics.

SUBSTANCE: method for underground disposal of liquid radioactive silicon-containing wastes involves pre-filtration of the wastes through a sand filter, adjusting pH of the wastes and disposal thereof in a prepared deep collector layer. The wastes are pre-filtered not more than 7 days after they are obtained and are disposed in the collector layer not more than 20 days after filtration. The invention enables to dispose at least 85% SiO₂ present in silicon-containing wastes in a deep collector layer.

EFFECT: protecting the collector layer from clogging.

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