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Química Nova

Print version ISSN 0100-4042On-line version ISSN 1678-7064


OTENIO, Marcelo Henrique et al. Laboratory scale assessment of an electrolytic process for water treatment. Quím. Nova [online]. 2008, vol.31, n.3, pp.508-513. ISSN 0100-4042.

Water treatment uses chlorine for disinfection causing formation of trihalomethanes. In this work, an electrolytic water pre-treatment was studied and applied to the water from a fountainhead. The action against microorganisms was evaluated using cast-iron and aluminum electrodes. Assays were made in laboratory using the electrolytic treatment. After 5 min of electrolysis the heterotrophic bacteria count was below 500 cfu/mL and complete elimination of total and fecal coliforms was observed. Using electrolytic treatment as a pretreatment of conventional tap water treatment is proposed.

Keywords : electrolytic treatment; water disinfection; water quality.

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