Industrial wastes treatment after iron hydroxide flocculation - by anodic oxidation and aluminium hydroxide flocculation

摘要

Industrial wastes with a high degree and greatly fluctuating content of pollutants, specially in the textile industry, are purified by an iron hydroxide flocculation process. The fluid is next oxidised anodically and, if necessary, chlorinated. The final stage is an anodic Al hydroxide flocculation. Before oxidn. the fluid is pref. passed through a flotation or sedimentation stage, and after the aluminium hydroxide flocculation through filters. This results in a minimum consumption of power and of Al. The inexpensive iron hydroxide flocculation performs the principal purification. The plant can be run quickly at maximum load in case the pollutant concentration rises rapidly.