ANORDNING OCH FOERFARANDE FOER BEHANDLING AV PAPPER TILLVERKANDE OCH ANVAENDANDE INDUSTRIERS PROCESSCIRKULATIONS- OCH AVLOPPSVATTEN

摘要

1. Method for the treatment of factory circulation water and waste waters of the paper-making and related industries for the purpose of removing dissolved or colloidally dispersed organic substances, characterized in that an acid activated clay mineral is used, of which the alkali or alkaline earth portion in dissolved practically completely out of the mineral and of which the aluminium portion is for the most part dissolved out of the mineral.