PROCESS OF UNDERGROUND DISPOSAL OF BIOLOGICALLY HAZARDOUS SEWAGE Russian patent published in 2008 - IPC G21F9/24 

FIELD: underground disposal of biologically hazardous sewage.

SUBSTANCE: process of underground disposal of biologically hazardous sewage into geological formations, which do not have distinct aquifiers above the working floor, includes drilling of injection wells and pumping sewage into the working floor. The process is distinguished by sewage pumping into working floor simultaneously with technical fluid injection into a stratum above the working floor. Pressure of technical fluid injection into the buffering floor is sustained at the level of 0.9-1.1 of sewage injection pressure in the working floor.

EFFECT: prevents disposed sewage penetration into higher aquifiers.

2 cl, 2 dwg