Comparative study on combined preoxidation by potassium permanganate composites with chlorine and preozonation for enhancing coagulation
LIANG Heng1,2, ZHENG Wen-yu3, GONG Wei-jia4, REN Nan-qi1, LI Gui-bai1,2
1.State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology, Harbin 150090,China;2.National Engineering Research Center of Urban Water Resources, Harbin 150090,China;3.China Northeast Municipal Engineering Design and Research Institute, Changchun 130000, China;4.School of Engineering, Northeast Agriculture University, Harbin 150030, China
Abstract:
Comparative pilot tests were conducted to investigate the coagulation-aid effects of the combined preoxidation by potassium permanganate composites (PPC) with chlorine and preozonation. And the synergistic mechanism of combined preoxidation was discussed. Results showed that 1.0 mg/L PPC with 2.0 mg/L chlorine could further improve the quality of treated water, as indicated by residual turbidity, TOC and algae. The enhanced efficiency could be explained by the synergistic effect of the preoxidants themselves, or the effect of chlorine and the intermediate such as hydrous manganese dioxide, which was generated by potassium permanganate, the main ingredient of PPC.
Key words: potassium permanganate composites (PPC) chlorine combined preoxidation preozonation enhanced coagulation
DOI：10.11916/j.issn.1005-9113.2009.06.020
Clc Number:TU991.2
Fund:
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Comparative study on combined preoxidation by potassium permanganate composites with chlorine and pr
本站小编 哈尔滨工业大学/2019-10-23
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