New Technology for the Integrated Treatment of Industrial and Landfills Waste Water Using Iron and Aluminum Oxides Nanopowders

The development of new and advanced methods for industrial wastewater treatment, combined with the intensification and operation of energy/resource efficient equipment for treatment processes, made possible their application to industrial water recycle plants and to produce commercial products from waste flows. An energy efficient process is proposed for the synthesis of new highly efficient sorbents - magnetic nano-powders (5 - 500 nm) of polyvalent iron oxides, aluminium oxides by electro erosion dispersion of iron/low-alloyed steel or aluminum granules, or chips with metal evaporation in plasma and further condensation in a working liquid. The nano-powders produced are efficient sorbents for wastewater contaminants— particularly ions of heavy and alkaline-earth (radioactive) metals—and will be used for comprehensive treatment of liquid industrial effluents, including wastewater and exhausted technological solutions. The advantages of the treatments by the nano-sorbents prepared on-line include their high activity, a high degree of removal of heavy metals ions from liquids, while the resulting sediments may be reliably utilised. The method is environmentally friendly, generates no technological wastewater discharges and air emissions, has low expenditure of energy, and requires comparatively small amount of sorbents.