FIELD: treating of solid waste. SUBSTANCE: method includes supplying suspension of solid combustible waste in oil. Oil is 0.5 by weight of combustible solid waste. Suspension is fed in burner of a furnace made of main combustion chamber with burner at the top of the furnace, secondary combustion chamber provided at bottom part of the main combustion chamber, and manifold for flue gas positioned below and downstream of the secondary combustion chamber. Burning of waste in the main combustion chamber, by-passing burned products into the secondary combustion chamber and conditioning them are implemented at temperature in the range of 300 to 1000°C during at least 0.5 s. Heating pipes are arranged along side wall of the main chamber. EFFECT: enhanced efficiency. 3 cl, 2 dwg
