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Use of precipitate electroflotation for increasing the degree of wastewater treatment to remove nonferrous metals

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Abstract

A method is suggested and studied of removing nonferrous metals of from waste waters. The method is, that waste water containing nonferrous metals is treated to adjust pH to 9–10, after which sodium orthophosphate solution is added at metal/phosphate ion weight ratio 1 : (0.5–0.7) resulting in formation of slightly water-soluble metal hydroxyphosphate whose solubility is inferior to that of corresponding metal hydroxide. To isolate resulting compounds, electroflotation method with insoluble anodes is employed. Efficiency of removing nonferrous and heavy metals meets norms established for water discharge into fish-industry reservoirs.

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References

  1. Water Quality Standards for Water of Water Bodies Used for Commercial Fishing, Including Standards of the Maximum Permissible Concentrations of Harmful Substances in Waters of Water Bodies Used for Commercial Fishing (Approved by Order no. 20 of the Russian Federal Fisheries Agency of January 18, 2010).

  2. Hygienic Standards GN 2.1.5.1315-03: Maximum Permissible Concentrations (MPCs) of Chemical Substances in Water of Household and Cultural Use Water Bodies (effective since June 15, 2003).

  3. Kolesnikov, V.A., Il’in, V.I., Kapustin, Yu.I., et al., Elektroflotatsionnaya tekhnologiya ochistki stochnykh vod promyshelennykh predpriyatii (Electroflotation Technology of Industrial Wastewater Treatment), Moscow; Khimiya, 2007.

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Authors and Affiliations

  1. Mendeleev Russian University of Chemical Technology, pl. Miusskaya 9, Moscow, 125046, Russia

    V. I. Il’in

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  1. V. I. Il’in
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Correspondence to V. I. Il’in.

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Original Russian Text © V.I. Il’in, 2012, published in Rossiiskii Khimicheskii Zhurnal, 2012, Vol. 56, Nos. 5–6, pp. 96–99.

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Il’in, V.I. Use of precipitate electroflotation for increasing the degree of wastewater treatment to remove nonferrous metals. Russ J Gen Chem 84, 1058–1060 (2014). https://doi.org/10.1134/S1070363214050430

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  • DOI: https://doi.org/10.1134/S1070363214050430

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