PROCESS FOR REMOVING COMPLEX-BONDED HEAVY METAL ION FROM REACTION SOLUTION AND WASTE LIQUID CONTAINING INORGANIC AND/OR ORGANIC COMPLEX FORMATION BODY

摘要

Heavy metals can be precipitated from waste water or aqueous reaction solutions containing inorganic and/or organic complexing agents with substituted thiorureas of the general formula R1R2N-CS-NH-COR3. N,N-dialkyl-N'-benzoyl thioureas are used with preference, whereby methyl, ethyl, n-propyl or isobutyl groups are used as alkyl substituents.