公开(公告)号：US20170283293A1

公开(公告)日：2017-10-05

申请号：US15381177

申请日：2016-12-16

Applicant: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES (KIGAM)

Inventor： Hee-Young SHIN ,  Sang-woo JI ,  Young-soo HAN

IPC: C02F11/12 ,  C04B7/40 ,  C02F11/14

CPC classification number: C04B7/40 ,  C01F11/18 ,  C01P2006/80 ,  C02F1/5236 ,  C02F1/66 ,  C02F11/127 ,  C02F2101/10 ,  C02F2103/12 ,  C04B14/28 ,  C04B18/0418 ,  C04B18/16 ,  C04B20/023 ,  C04B28/02 ,  Y02W30/91 ,  Y02W30/95

Abstract: The present disclosure relates to a method for treating and recycling, in an environment-friendly manner, sludge and waste water generated in a process for crushing waste concrete and recycling waste concrete into aggregates. Sand is separated from sludge configured from cement components and sand components and is recycled as fine aggregates, and the cement components can be used as concrete admixtures. Furthermore, the present invention introduces a mineral carbonation technique and thereby allows pH of waste water to satisfy an environmental standard and allows high value calcium carbonate to be produced.