What are the water quality parameters that need to be known before employing an iron oxide adsorption treatment solution?
To effectively implement an iron oxide adsorption treatment solution a detailed water quality analysis is needed. The most important analyses are pH, As, As (III), SiO2, PO4, V, Fe and Mn. • pH determines whether or not pH adjustment is recommended to improve the media’s adsorption capacity • Total As determines the treatment capacity of the life of the media. As (III) may require longer EBCT. • SiO2, PO4 and V are interferents that can reduce adsorption capacity • Depending upon their levels, Fe and Mn could be removed simultaneously with As by the iron oxide media. At elevated levels, pretreatment for Fe and Mn removal is recommended and improves the adsorption process.
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