METHOD FOR UNDERGROUND LIQUID DOMESTIC WASTE AND RAINWATER STORAGE Russian patent published in 2008 - IPC B65G5/00 

FIELD: environment protection, particularly for underground liquid waste and rain water storage.

SUBSTANCE: method involves performing geological and geophysical investigations to detect isolated natural local voids in rock surrounded by low-permeable rock, for instance by basalt rock; drilling well and injecting liquid domestic waste and drained rain water in said voids via wells; discharging biological degrade products from voids along with following recovering thereof. Waste and gaseous produces are discharged via single well provided with pipe string with hydraulic drive in lower part thereof. The hydraulic drive is communicated with electric current generator and is made as impeller-like hydraulic machine. One well section drilled in loose sediments is sealed with liner provided with connection pipe arranged in upper part thereof. Upper string end is retained in liner flange. Waste is discharged via pipe string. Gaseous products are extracted via hole annuity and said pipe.

EFFECT: decreased costs of method realization due to decreased land area necessary for well drilling and pipeline laying, as well as due to waste fluid kinetic energy usage during void filling.

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