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Experimental research on the characterization and application of Mg-Fe composite flocculant. |
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Abstract A new PFMS composite flocculant was prepared by ferrous sulfate (FeSO4), magnesium oxide (MgO) and sulfuric acid (H2SO4). The structure and iron distribution of the product were investigated. The magnesium ion didn’t participate in the polymerization process, but it improved the stability of the product. In order to study the flocculation performance difference between self-made PFMS/PFS and industrial PFS, the simulated turbidity wastewater by kaolin, the simulated dye wastewater by direct fast black G and the coking wastewater were chosen to carry out the coagulation experiment of removing turbidity, color and COD, respectively. The turbidity removal efficiency by PFMS was a little higher than that of the self-made and industrial PFS, and the residual turbidity was below 5 NTU. In alkaline conditions, the decoloration rate and COD removal rate by PFMS were higher than that of the self-made and industrial PFS.
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Received: 28 October 2008
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