Generator of High-Voltage Nanosecond Pulses With Repetition Rate More Than 2000 Pulses Per Second for Water Purification by the Discharges in Gas Bubbles

Boyko, N. I.; Makogon, A.V.

doi:10.15407/techned2018.04.037

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…In the modern world, researchers are constantly searching for new energy-saving technologies for disinfection and water treatment. One of the most promising and relevant technologies in this direction is the technology of water treatment using micro-and nanosecond discharges in gas bubbles [1][2][3].…”

Section: мета порівняння електричних кіл експериментальних установокmentioning

confidence: 99%

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The Micro- And Nanosecond Discharges in Gas Bubbles for Water Disinfection and Purification

Boyko¹,

Makogon²

2019

Elektroteh. elektromeh.

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Purpose. Comparison of electrical circuits of experimental plants for obtaining micro-and nanosecond discharges in gas bubbles in water and comparing the experimental results obtained for disinfecting water using such discharges. Methodology. To obtain high-voltage pulses on the load in the form of a gas bubbles and a layer of water with a frequency of more than 2000 pulses per second, a method of generating micro-and nanosecond pulses using high-voltage pulse generators based on a pulse transformer (PT) according to Tesla, with a transistor opening switch IGBT in the low-voltage part of the circui. A current-limiting resistor with a resistance R cl = 24 k is used to protect the transistor switch at microsecond discharges. At nanosecond discharges, a multi-gap spark gap is used to sharpen the front of high-voltage pulses. We used a capacitive voltage divider with a division factor of K d = 7653 to measure voltage pulses, a shunt with a resistance of R s = 2.5  for measuring current pulses. RIGOL DS1102E digital oscilloscope with a 100 MHz bandwidth was used as a recording device. Results. The effect of micro-and nanosecond discharges in gas bubbles on microorganisms was experimentally investigated. It was possible to reduce the biochemical oxygen consumption of water during microsecond discharges, reduce the turbidity of water, and improve its organoleptic qualities. The energy released in a single pulse with microsecond discharges W µ ≈ 17 mJ, with nanosecond discharges W n ≈ 7.95 mJ. At nanosecond discharges, complete inactivation of E.coli bacteria was achieved. The disinfecting and purifying action of nanosecond pulses is better compared to microsecond pulses due to an increase in the amplitude of the pulsed voltage up to 30 kV, and a pulsed current of up to 35 A. Originality. The possibility of effective microbiological disinfection of water using nanosecond discharges in gas bubbles at low specific energy consumption has been experimentally shown. Practical value. The obtained experimental results on water disinfection using micro-and nanosecond discharges offer the prospect of industrial application of installations using such discharges for disinfecting and purification wastewater, swimming pools, and posttreatment of tap water. References 9, figures 3. Key words: high-voltage generator, micro-and nanosecond pulses, discharge in gas bubbles in water, disinfection and water purification by discharges, inactivation of microorganisms.

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Section: мета порівняння електричних кіл експериментальних установокmentioning

confidence: 99%

“…Electric circuits of experimental installations. Figures 1,a,b show the electric circuits of experimental installations for water treatment using micro-and nanosecond discharges in gas bubbles [2,3]. In Fig.…”

Section: цель сравнение электрических схем экспериментальных установmentioning

confidence: 99%

The Micro- And Nanosecond Discharges in Gas Bubbles for Water Disinfection and Purification

Boyko¹,

Makogon²

2019

Elektroteh. elektromeh.

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Electric Discharge Water Treatment Technologies and Criteria of Expediency of Their Use

Bereka¹,

Kondratenko²

2021

Praci Inst. elektrodin. Nac. akad nauk Ukr.

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The analysis of the known results of processing model aqueous solutions with different types of electric discharge using the AOT technology is carried out. Comparison of the processing efficiency for the decomposition of model pollutants for energy yield criterion (Y), as well as the prospects for further industrial implementation of the technology for the criterion of expected productivity, is carried out. The factors that influence the value of energy output and energy efficiency, in general, are determined. Ref. 17, fig. 2, tables 2.

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High Voltage Plant With 3 Mw Pulse Power for Disinfection Flow of Water by Nanosecond Discharges in Gas Bubbles

Boyko¹,

Makogon²

2020

Teh. elektrodin.

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The processes in the discharge circuit of a powerful high-voltage pulse installation with three multi-gap spark gaps operating in parallel are experimentally investigated. Oscillograms of voltage and current pulses at the load in the form of three reactors are obtained with running water. The discharge processes are compared when using in the discharge circuit three multi-gap dischargers and three reactors connected in parallel, on the one hand, and one such discharger and one reactor on the other. The regimes of synchronous discharges in gas bubbles were obtained in three reactors, which ensured the complete inactivation of the E.coli in water with an initial concentration of 10 6 CFU/cm 3 (CFU is a colony-forming unit). References 5, figures 4, table 1.

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Generator of High-Voltage Nanosecond Pulses With Repetition Rate More Than 2000 Pulses Per Second for Water Purification by the Discharges in Gas Bubbles

Cited by 3 publications

References 4 publications

The Micro- And Nanosecond Discharges in Gas Bubbles for Water Disinfection and Purification

The Micro- And Nanosecond Discharges in Gas Bubbles for Water Disinfection and Purification

Electric Discharge Water Treatment Technologies and Criteria of Expediency of Their Use

High Voltage Plant With 3 Mw Pulse Power for Disinfection Flow of Water by Nanosecond Discharges in Gas Bubbles

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