Papers by Keyword: High-Voltage Pulsed Discharge

Abstract: The paper shows fundamental possibility of processing of gold-bearing technogenic raw materials using the method of electric explosion. A series of experiments using a laboratory and pilot-production high-voltage pulsed discharge (HVPD) installation for the processes of enrichment of gold-bearing mineral raw materials of Komsomolsk mine tailings in Kemerovo region is conducted with a relatively low energy electrical discharge in the pulse of up to 112.5 Joules and the cost of electric power of about 1.5 kW/ton of raw material, that allows complete destruction of clay components agglomerations to less than 0.045 mm (micron and submicron sizes). Solid minerals such as quartz are simultaneously destroyed by defects in the grains and withdrawn from the installation with water, thus increasing gold degree of the concentrate. The results of particle-size and X-ray structural analyses of gold-bearing mineral raw materials of Komsomolsk mine tailings in Kemerovo region obtained by the method of electric explosion are discussed.

Abstract: The low-temperature plasma technology has the comprehensive action of high-energy electron, ultraviolet light, ozone etc. The technology that integrates light, electronic and chemical oxidation into one process has a good development prospect in wastewater treatment. In this paper, the research status and development trend of high-voltage pulsed discharge, dielectric barrier discharge, glow discharge for organic wastewater treatment at home and abroad are summarized. The current main existing problems include single treatment object oriented. In the future, the study about this technique should be focused on the optimization process, the reduction of the processing cost and energy consumption, so that this technology can be applied to practical wastewater treatment as soon as possible.Key words: Low temperature plasma technology; High-voltage pulsed discharge; Glow discharge; Dielectric barrier discharge; Wastewater

Abstract: Treatment technology for ballast water is in need. High-voltage pulsed discharge has great potentiality to inactivating micro-algae living in ballast water. In this study, effects of discharge reactor parameters and ballast water parameters to discharge characteristics were studied, the efficiency of the micro-algae inactivation was confirmed preliminarily, and the principle of designing discharge reactor parameters was discussed. The main conclusions are: UP increased with the increasing of d, while decreased with the increasing of r; IP increased with the increasing of r, while decreased with the increasing of d; UP and IP both increased with the increasing of U. E decreased with the increasing of d; when d=2mm, the value of E was far larger than that of d≥6mm; when d was 2mm，larger r, larger E; when d was between 6-20mm, larger r, smaller E. The optimized structure of discharge reactor should be r=3mm and d=6mm. Up increased with the increasing of Q while decreased with the increasing of T. η increased with the increasing of U and d, decreased with the increasing of r.