Method and technological process for processing of refuse of neutralisation alkaline rinsing waters and concentrates from surface treatment of aluminium

摘要

Method of waste treatment. alkaline water neutralizationand concentrates from aluminum surface treatment, in particular sludgeresulting from electrolytic or chemical processingaluminum and / or for anodizing and coating aluminum,is determined by the sludge formed by neutralizationThe first step analyzes the organic and inorganic contentimpurities, where then based on the results of this analysisthe sludge is cleaned and treated so that in the case of a negativethe analytical result is not appliedand in case of positive analysis, organic and inorganicimpurities are removed by a decanting agent, which is the caseorganic impurities organic solvent and, if foundInorganic impurities are used as the decanting agentan aqueous solution of hydrogen peroxide (H 2 O 2), thereby becoming anodicthe sludge to remove chromium (Cr) salts, and / or are usedaqueous ammonia (NH 4) solution and the sludge is deprotectedcopper (Cu), depending on the results of the analysis, vapply different or all decanting order in different orderagents, thereby removing the sludge from unwanted elements and substances.