SYSTEM AND METHOD FOR TREATING GRANULE

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PROBLEM TO BE SOLVED : To provide a system and a method for treating granules capable of efficiently removing a water soluble component and a harmful substance such as heavy metal from granules even if employing simplified equipment and reducing the amount of cleaning water. SOLUTION : The system for treating granules includes a wet-type sorting means 2 that classifies granules into fine particles and medium particles while washing the granules, a first solid-liquid separation means 4 for separating effluent resulting from washing and fine particles discharged from the wet-type sorting means 2, a first circulation route 3 for sending effluent discharged from the first solid-liquid separation means 4 back to the wet-type sorting means 2, a second solid-liquid separation means 6 for separating effluent and the medium particles discharged from a re-washing means 5 for re-washing the medium particles, a second circulation route 7 for sending effluent discharged from the second solid-liquid separation means 6 back to the re-washing means 5, a fresh water supply route 8 for supplying fresh water to the re-washing means 5, and a route 9 for supplying effluent that supplies a portion of the effluent discharged from the re-washing means 5 to the first circulation route 3. COPYRIGHT : (C)2011, JPO&INPIT