Simultaneous removal of arsenic, iron and manganese from groundwater by oxidation-coagulation-adsorption at optimized pH

摘要: The method based on oxidation-coagulation-adsorption at optimized pH (OCOP) using NaHCO 3 , KMnO 4 and FeCl as conditioner, oxidant coagulant, respectively, is an efficient low-cost for removal of arsenic from groundwater that has been gaining popularity in India. In a recent modification OCOP, coexisting ferrous iron water was utilized order to lower the dose hence cost treatment containing both iron. Here we present how OCOP can be effectively economically used simultaneous arsenic, manganese ions all three contaminants. For this have required doses by response surface methodology field trial with 11 domestic units 20 L capacity batch mode. Arsenic, were removed simultaneously below 1 μg/L, 0.03 mg/L 0.009 initial concentrations 100 1–8 0.5–5.0 mg/L, reduced cost.