Method and device for treating a contaminated alkaline amino acid saline solution

摘要

The invention relates to a method (1) for treating a contaminated alkaline amino acid saline solution (3). Carbon dioxide (2) is first introduced into the amino acid saline solution (3), by means of which carbonate or carbonate salts (4) precipitate and are filtered out. The remaining filtrate is then cooled, wherein amino acids or amino acid salts (7) crystallize and are also filtered out. The amino acid or the amino acid salt (7) is then dissolved again, by means of which a treated amino acid salt solution (15) is recovered. The invention further relates to a device (30) for carrying out the method.