Advanced Treatment of Aluminum Industry Effluent for Non-Potable Reuse

摘要

This report presents the findings of a six month pilot plant study investigating non-potable reuse of aluminum plant wastewater. The two demineralizing technologies studied were reverse osmosis and electrodialysis. Pretreatment through out the testing consisted of chemical flocculation/clarification and multimedia filtration. During the investigation, over 3,000 operating hours were put on each of the two desalting technology membranes to obtain information on membrane life expectancy. The most promising treatment technologies tested which meet the various non-potable reuse needs of the aluminum industry were determined by pilot plant performance. Potential water reuse applications were identified along with water quality and quanity reqirements. Comparisons were made to the treated effluent quality achieved from each of the pilot process elements.