METHOD OF PREPARING IMPERVIOUS COATING OF WASTE ACCUMULATOR Russian patent published in 2000 - IPC

FIELD: construction of ground accumulators of wastes, particularly, methods of reduction of filter losses from accumulator of used drilling muds, drilling cuttings and drilling waste waters. SUBSTANCE: method includes placing on shielded base of reinforcing material from nonwoven cloth and supply of liquid composition onto reinforcing material. Liquid composition is supplied in the form of used drilling mud with plastic viscosity of 25-30 m.Pa.s and containing 27-30 wt.% of clay fraction. Drilling mud is supplied onto cloth surface on base of 0.003-0.005 cu.m/sq.m. Particles of used drilling mud fill pore space of reinforcement to enhance impervious properties of coating of waste accumulator. EFFECT: higher efficiency. 2 dwg