FIELD: chemistry.
SUBSTANCE: said method is characterised by that, water containing ionic and non-ionic triazines in dissolved form is fed into at least one membrane filter (MF) element. The water is divided into a fraction rich in ionic triazines and a fraction rich in non-ionic triazines in the membrane filter element. The fraction rich in ionic triazines is then unloaded and the fraction rich in non-ionic triazines is re-circulated to production of melamine.
EFFECT: method allows for recycling a large portion of melamine present in triazine-containing water, total output of the method of producing melamine increases, amount of fresh water required for the wet part in melamine production decreases.
23 cl, 2 dwg
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