A sub-atmospheric pressure discharge generated in hydrodynamic cavitation for water treatment

POSTER

Abstract



We present a recently developed plasma source that uses a synergistic effect of hydrodynamical cavitation and electrical discharge in cavitating environment, called “CaviPlasma”. This plasma device breaks the limits of existing plasma generators offering the industrial-scale flow rate of 1-15 m3/h (laboratory devices) introducing peroxide-based chemistry into treated water, thus keeping the pH practically unchanged (within 0.5 pH difference margin).

We have achieved the peroxide concentration higher than 10 mg/l per one water passage through the CaviPlasma and peroxide yield of G(H2O2) = 9.5 g/kWh, which ranks CaviPlasma to high efficiency plasma sources.

The effects of CaviPlasma water treatment were proven on the study of the successful remediation of cyanobacteria and algae from water, inactivation of pathogens collected from hospital environment surfaces or inactivation of the main rainbow trout pathogenic bacteria.

Publication: J. Cech, P. Stahel, L. Prokes, D. Trunec, R. Hornak, P. Rudolf, B. Marsalek, E. Marsalkova, P. Lukes, A. Lavrikova, Z. Machala: "CaviPlasma: parametric study of discharge parameters of high-throughput water plasma treatment technology at glow-like discharge regime", submitted to the journal Plasma Sources Science and Technology

Presenters

  • David Trunec

    Masaryk University

Authors

  • David Trunec

    Masaryk University

  • Jan Cech

    Masaryk University

  • Pavel Stahel

    Masaryk University

  • Lubomir Prokes

    Masaryk University

  • Radek Hornak

    Masaryk University

  • Pavel Rudolf

    Brno University of Technology

  • Blahoslav Marsalek

    Institute of Botany of the Czech Academy of Sciences

  • Petr Lukes

    Institute of Plasma Physics of the Czech Academy of Sciences