Pulsed power for advanced waste water remediation

Bystritskii, V.M.; Wood, Thomas K.; Yankelevich, Y.; Chauhan, Sadhana; Yee, Dennis C.; Wessel, F. J.

doi:10.1109/ppc.1997.679280

Cited by 23 publications

(10 citation statements)

References 6 publications

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“…The plasma reactor is capable of handling both gases and liquids. In both cases, the treatment will be conducted in heterogeneous media, which proved high removal efficiency [3]. A bluish uniform glow was observed in the whole volume of the electrode system, which is a good indication as to the PCS chemical efficiency.…”

Section: Discussionmentioning

confidence: 97%

“…The proposed approach is based on initial atomization of water followed by processing the produced aerosol (droplet diameter 10-100 ) in a repetitive (up to 1.0 kHz), short-pulse (50-100 ns), medium-voltage ( 100 kV) PC discharge [3]. The discharge occurring between the water spray and a system of intermeshed electrodes provides efficient filling of the whole aerosol volume with a swarm of hot electrons ( 1-10 eV), hydrated electrons and free active radicals.…”

Section: General Conceptmentioning

confidence: 99%

“…In laboratory experiments, nanosecond PC that creates energetic electrons in large quantities has demonstrated effectiveness against a wide variety of hazardous industrial gaseous compounds, such as volatile organic compounds, chlorofluorocarbons, perfluorinated compounds, etc. A promising technique that has proved high removal efficiency is a PC discharge in aerosol [3]. In this work, the PC treatment was complemented by biological treatment at the second stage.…”

Section: Introductionmentioning

confidence: 99%

“…An aerosol reactor design that was not published elsewhere is given in detail. Both MC and aerosol reactor can be used separately, e.g., the first in excimer lasers, whereas the second can be driven by any other type of pulse generator (in the past, an aerosol reactor was fed by a thyra- tron-based pulser not containing MC [3]). For the first time in open literature, a merge of an MC-based pulser and an aerosol reactor in a plasma source and the preliminary results of its characterization are reported.…”

Section: Introductionmentioning

confidence: 99%

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A High-Power Pulsed Corona Source for Pollution Control Applications

Pokryvailo

Yankelevich

Wolf

et al. 2004

IEEE Trans. Plasma Sci.

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The system comprises an all solid-state compact nanosecond pulser and a plasma reactor. The pulser makes use of magnetic compression techniques. Owing to a fast switching at the feed of the HV transformer provided by an ABB GCT switch, one compression stage suffices for the forming of 45-kV, 100-ns pulses across a 120-resistive load at a PRF of up to 1 kHz; the risetime is 15 ns. Plasma reactor is capable of handling both gases and liquids by adding small amounts of atomized water to the gas discharge, in the case of gas, or atomizing polluted liquid itself. In both cases, the treatment is conducted in heterogeneous media. Circuit analysis of compressor and charging system accounting for nonlinear processes in magnetic switches and numerous parasitic parameters is presented. Mechanical and electrical designs are detailed. Typical voltage and current waveforms, volt-ampere characteristics, corona discharge appearance, and light emission characteristics are presented. At operation on a resistive load, the compressor efficiency was found to be approximately 80%, which allowed for air cooling. The experimental results obtained with a resistive load are in fair agreement with the circuit simulation. A novel magnetic compressor circuit improving the coupling to PC discharge is proposed and evaluated.

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Section: Discussionmentioning

confidence: 97%

Section: General Conceptmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A High-Power Pulsed Corona Source for Pollution Control Applications

Pokryvailo

Yankelevich

Wolf

et al. 2004

IEEE Trans. Plasma Sci.

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“…PC reactor has a large cross-section that is hard to block. Besides high removal efficiency, aerosol reactors [3,4] benefit from an inherent to their operation feature of cleaning the insulators and the electrode system by the sprayed water.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Operational Regimes of a High-Power Pulsed Corona Source with an All-solid State Pulser

Pokryvailo

Wolf

Yankelevich

2007

IEEE Trans. Dielect. Electr. Insul.

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This paper reports the ongoing effort on development of efficient, compact pulsed corona sources for pollution control applications. The system comprises an all-solid 4 kW average-power nanosecond pulser and a plasma reactor. The pulser is based on a single-stage magnetic compressor generating ~50 kV, 1-5 J and 50-100 ns pulses across a multi-wire reactor having an impedance of approximately 100 Ω, at pulse repetition frequency of up to 1 kHz. The principle of operation of the compressor is described. Equivalent circuits for two consecutive operation stages of the compressor accounting for nonlinear processes in magnetic switches are presented and analyzed. It was found that for the given topology, the optimal ratio of the primary and secondary capacitances is less than "classical" unity value that is characteristic for most magnetic compression systems. The freewheeling diode was constructed from UX-FOB diodes chosen on the basis of the comparison of forward losses of several fast recovery diodes at pulsed conditions. Electrostatic analysis of a complex reactor structure was reduced to a simple problem of coaxial electrodes. This allowed for the implementation of a simplified corona model integrated into a PSpice simulation. The simulated waveforms bear close resemblance to their experimental counterparts. It was found that the reactor breakdown voltage decreased considerably with the increase of the pulse repetition frequency. In several cases, the latter effect was clearly associated with ozone build-up.

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A Novel Concept of Remediation of Polluted Streams Using High Energy Density Glow Discharge (HEDGe)

Pokryvailo¹

2009

Electrostatic Precipitation

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Pulsed power for advanced waste water remediation

Cited by 23 publications

References 6 publications

A High-Power Pulsed Corona Source for Pollution Control Applications

A High-Power Pulsed Corona Source for Pollution Control Applications

Investigation of Operational Regimes of a High-Power Pulsed Corona Source with an All-solid State Pulser

A Novel Concept of Remediation of Polluted Streams Using High Energy Density Glow Discharge (HEDGe)

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