Comparison on Permanganate and Ozone as Pre-Oxidation Agents

Abstract:

Comparative study on permanganate and ozone as pre-oxidation agents were performed on pilot scale with traditional drinking water treatment process, chemical oxygen demand (COD), total organic carbon (TOC), UV₂₅₄, turbidity, trihalomethane formation potential (THMFP) were examined at each reactor’s effluent. The results show that at pre-oxidation reactor, the total organic remained stable after by the two agents, while for UV₂₅₄, pre-ozonation has a removal rate of 34%, comparing that of 17% by permanganate. At the sedimentation process, 0.4 mg/L permanganate improves the removal rate of turbidity and COD by 0.99 % and 8.4%, respectively; while a positive COD removal of 11.8 % was achieved by 0.9 mg/L pre-ozonation, and an average of-10.08% turbidity removal was achieved at applied dosage (0.5, 0,9 and 1.5 mg/L), which can be made up for in the followed sand filtration reactor. Both permanganate and pre-ozonation show higher removal rate of THMFP for the finished water.

• Periodical: Advanced Materials Research (Volumes 955-959)
• Pages: 3408-3413
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.955-959.3408
• Online since: June 2014
• Authors: Hong Wei Sun*
• Keywords: Comparative Study, Ozone, Permanganate, Pilot Test, Pre-Oxidation

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