公开(公告)号：US20240246837A1

公开(公告)日：2024-07-25

申请号：US18017794

申请日：2022-07-01

申请人： LG Chem, Ltd.

发明人： Suk Yung Oh ,  Yong Heon Cho ,  Jung Su Han ,  Jun Seok Ko ,  Nam Young Yoon ,  Sung Hwan Kim

IPC分类号： C02F1/04 ,  C02F1/66 ,  C02F101/16

CPC分类号： C02F1/048 ,  C02F1/043 ,  C02F1/66 ,  C02F2101/16

摘要： Provided is a wastewater purification method, the method including: supplying a first mixed stream, in which an acid component and wastewater including water, a nitrile-based monomer, and ammonia are mixed, to a first column; recovering the nitrile-based monomer from an upper discharge stream from the first column; supplying a second mixed stream, in which a lower discharge stream from the first column and a base component are mixed, to a second column; and recovering the ammonia from an upper discharge stream from the second column and separating purified wastewater.