Patent ID: 8133716

Claim:
A method of treating municipal solid waste, comprising the steps of: an input step of inputting one or more unbroken waste bags including the municipal solid waste and microorganisms to a reactor having an axis of rotation inclined and having an inlet into which the one or more unbroken waste bags are input and an outlet with a height lower than the height of the inlet; a first reaction step of firstly reacting organic matter among the municipal solid waste with the microorganisms input to the reactor in the input step, the first reaction step comprising simultaneously: breaking the one or more unbroken waste bags including the municipal solid waste through fall dropping and mutual friction while the reactor is rotating, crushing the organic matter among the municipal solid waste discharged from the broken waste bags through fall dropping and mutual friction while the reactor is rotating, decomposing the crushed organic matter among the municipal solid waste with the microorganisms, and removing a considerable amount of moisture in the municipal solid waste with the biological heat produced by the decomposition of the crushed organic matter; a first separation step of transferring first intermediate matter completing the first reaction in the reactor to a first separator and then separating the crushed organic matter below a predetermined size (also comprising inorganic matter below the predetermined size passing through a screen of the first separator, referred to as “second intermediate matter”) and uncrushed inorganic matter above the predetermined size, further comprising a recycled material recovering step of separating and recovering the recycled material by properties for recycling the uncrushed inorganic matter; a second reaction step of transferring second intermediate matter including the crushed organic matter below the predetermined size passing through the first separator to a decomposing field constructed with good air circulation and then carrying out the second reaction of the second intermediate matter with the microorganisms; a second separation step of transferring third intermediate matter completing the second reaction in the decomposing field to a second separator and then separating foreign matter from the third intermediate matter; and a post-treatment step of post-treating fourth intermediate matter separated from the third intermediate matter in the second separation step to make decomposed soil that is a final material; characterized by further comprising the crushing step of crushing by a mechanical means the uncrushed inorganic matter above the predetermined size separated from the crushed organic matter in the first separation step to provide the crushed inorganic matter to the first separator again.