METHOD FOR SOLID MUNICIPAL WASTE TREATMENT Russian patent published in 2022 - IPC B09B3/00 B03B9/06 C10L5/46 

FIELD: waste treatment.

SUBSTANCE: invention relates to the processing of garbage for use as fuel for combustion in power plants and can be implemented for the use of waste as a classified solid fuel or its component, and also as an alternative fuel in cement production. The method for municipal solid waste treatment is characterized by the fact that after negative and positive sorting of municipal solid waste, the remains of sorting larger than 100 mm and screening particles smaller than 100 mm are fed into the device for biothermal drying of waste by composting. After biothermal drying, the waste is sent to a screening device for separation into two fractions. The lower screening fraction obtained after separation with a size of less than 50 mm, which is an aerobically stabilized screening particles with an organic matter content of less than 10%, is sent for burial (disposal), and the upper screening fraction, a solid fuel component is fed to a grinding device, where the fractional composition of solid fuel from municipal solid waste with a humidity of 20% and less required by the customer is achieved. Before feeding to the grinding device, the upper fraction of the screening, the solid fuel component is fed to a magnetic separator to remove metal inclusions. At the same time, the size of the upper screening fraction after separation is more than 50 mm, the content of organic matter in the upper screening fraction is 70% or more, ash content is less than 10%, calorific value is 10 kJ/kg or more.

EFFECT: invention provides a decrease in the humidity of waste, a decrease in its ash content, an increase in the calorific value of waste.

3 cl, 1 dwg