Characterisation of Aluminium Industrial Wastewater and Investigation of Recovery Alternatives

Abstract

In aluminium processing and coating plants, different pollution profiles occur in different units within the process. In the enamel coating part, wastewater with a more intense pollution load occurs. There is less intense pollution of wastewater in washing units. More acidic water comes out from the anodised coating units, and the waters used for washing and shaping in the units where steel bonding takes place are more oily and have high chemical oxygen demand. All these waters are combined as a result of production and discharged to the wastewater treatment plant. In this study, the characterisation of wastewater originating from the two aluminium coating plants and its reusability in the process after being treated in the current treatment plant was carried out. In addition, advanced treatment methods were applied in these two aluminium plants to evaluate the reusability of the treated water. For this, the removal and reusability of pollution parameters were investigated.