| 摘要 |
<p>Process for treating crude and waste waters. This process effected by means of a cationic aminoplast resin is characterized in that a quaternized aminoplast resin is used as a cationic aminoplast resin, in which the aldehyde is a glyoxal or a mixture of glyoxal and formaldehyde and the nitrogen compound is melamine or melamine with some urea. Application to processing of crude waters and waste waters. </p> |
