Patent ID: 7017752

Claim:
A method of separating small rubbish and organic matters from garbage mixed with water and with heavy materials removed therefrom comprising the steps of: sifting out small rubbish and organic matters by pouring the garbage mixed with water into screen means, passing organic matters and small rubbish through the screen means to an inclined channel, and pushing the garbage not sifted and stayed on the screen means to a next stage for processing by spraying water from injection nozzle means under the screen means; collecting sunk small rubbish by directing sand and the sunk small rubbish to a trough means in a bottom of the inclined channel and discharging sand and the sunk small rubbish out of the inclined channel for collection via a drain pipe; collecting floated rubbish on the inclined channel by transporting the floated rubbish on the inclined channel to a floated rubbish collection container for collection by an inclined conveyor having a lower portion sunk in water in the inclined channel; and sifting out the organic matters in water by directing water contained organic matters in the inclined channel to an organic matter screen for sifting out the organic matters and passing water through the organic matter screen for purification.