Title :
A study on dyeing wastewater by application of impulse discharge
Author :
Huang Xinghua ; Wang Liming ; Zhicheng Guan ; Hu Qihao ; Fang Xingdong
Author_Institution :
Tsinghua Univ., Beijing, China
Abstract :
In this paper, three categories of dyeing wastewater were treated by impulse discharge. The discharge route was along rod-rod gap and needle-plate gap respectively. Several parameters such as COD, chromaticity were investigated. The results showed that the chemical structure of dyeing was destroyed significantly by impulse discharge; (1) In comparison with the original wastewater of 150 mg/l in COD and 2000(dilution factor) in chromaticity, the disperse dyeing wastewater was decolorized efficiently more than 90% under 7.8 kA current in peak for rod-rod gap case. (2) Both the direct dyeing wastewater and reactive dyeing wastewater was also decolorized dramatically using a needle-plate gap. The chromaticity of both categories of dyeing wastewater was removed more than 90%, but the COD tended to increase.
Keywords :
discharges (electric); dyes; plasma chemistry; water pollution; water treatment; 7.8 A; arc discharge; balas wastewater; benzene ring; biological degradability; black wastewater; chemical oxygen demand; chemical structure; chromaticity; creepage; decolorisation; dilution factor; direct dyeing wastewater; dyeing; epoxy resin; impulse discharge; manual-trigger impulse discharge generator; naphthalene ring; needle-plate gap; peak current; reactive dyeing wastewater; rod-rod gap; sludge; wastewater; Chemicals; Circuits; Electric breakdown; Electrodes; Iron; Regulators; Surface discharges; Surface treatment; Voltage; Wastewater treatment;
Conference_Titel :
Pulsed Power Plasma Science, 2001. PPPS-2001. Digest of Technical Papers
Conference_Location :
Las Vegas, NV, USA
Print_ISBN :
0-7803-7120-8
DOI :
10.1109/PPPS.2001.1001744
