Mine water treatment: using precipitation and filtration to remove dissolved antimony Online publication date: Wed, 24-Feb-2016
by Gideon Sarpong; Erik Grotton; Mirinda Jones; Archie MacDonald
International Journal of Environmental Engineering (IJEE), Vol. 7, No. 3/4, 2015
Abstract: This study was focused on (Sb) from mine water (groundwater) and to identify techniques for the flexibility for water disposal. The source water, naturally contaminated by 55-130 ppb of antimony, was groundwater from an active gold mine. Coagulation-flocculation-settling (precipitation) was the treatment technology used for the bench-scale and an analysis of variance (ANOVA) method was used for data analysis. The results showed that removal of antimony to below the maximum contaminant level (MCL) was achieved through iron (Fe) dosages above 35 mg/L and a pH of 4.5 with a free available chlorine (FAC) concentration of 20 mg/L. Fe dosage and pH are the two critical parameters for Sb removal but sufficient chlorine dosage is equally important for Fe precipitation. Data from the bench-scale was evaluated to provide useful information for designing a pilot to full-scale arsenic and antimony removal plant.
Online publication date: Wed, 24-Feb-2016
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