Wastewater purification method
AssigneeLG Chem, Ltd.
InventorsSuk Yung Oh, Yong Heon Cho, Jung Su Han, Jun Seok Ko, Nam Young Yoon, Sung Hwan Kim
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Abstract
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.
Claims10
A wastewater purification method comprising:
- 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;
- recovering the ammonia from an upper discharge stream from the second column and separating purified wastewater
- wherein the wastewater is produced from a manufacturing process of a homopolymer or copolymer latex including the nitrile-based monomer-derived unit, and
- wherein a pH of the first mixed stream ranges from 1.5 to 5.5.
Dependencies are inferred from the claim text.