Title: THE USE OF DISSOLVED AIR FLOTATION FOR RECYCLING WATER IN THE MINERAL PROCESS INDUSTRIES
Abstract:The amount of water involved in mineral processing is, in most of cases, responsible for contaminants transportation, such as chemicals, oils, detergents, suspended solids. Therefore the large volume ...The amount of water involved in mineral processing is, in most of cases, responsible for contaminants transportation, such as chemicals, oils, detergents, suspended solids. Therefore the large volume of wastewater from this process must be treated, before its discharge in the environment or reuse in the ore beneficiation plant. Dissolved air flotation (DAF) is a solid-liquid separation process based on the particle (or flocks) entrainment by microbubbles (10-100 µm) and can be used as an alternative to the mineral processing wastewater treatment. The optimization of different steps of the DAF process must be considered, as coagulation and flocculation, air bubble generation and design of dissolved air flotation cell to promote the best solid and organic compound removal efficiencies. Considering the disposal of the wastewater generated in mineral processes, the coarse fraction of particles will settle in the dam, but the fine fraction will still remain floating in the overflow, besides residual chemicals. Dissolved air flotation is an alternative technique that can be applied to adequate this overflow to be reused in the beneficiation plant (grinder, mill, cyclone, etc) or discharged in the environment. Therefore, this study aims to optimize the dissolved air flotation process to reduce suspended solids concentration, such as residual chemicals from the mineral processing beneficiation wastewater.Read More
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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