Abstract

Hospital liquid infectious waste is one of the most important aspects of water contamination. The present
investigation was undertaken to evolve a cost effective alternate method of waste water treatment by using
Oxidized Water as a disinfectant for hospital effluents. Liquid infectious waste coming from diagnostic
laboratories of hospitals (Urine, Blood and Mix of both) was treated with electrolyzed Oxidized Water. Different
v/v ratios (95:5, 85:15, 75:25, 50:50 and 25:75) of Sample to Electrolyzed Oxidized Water (EOW) were cultured
and incubated at 37oC for 24 hours. EOW showed a direct relationship with the decontamination of inorganic
urine but for blood, an unidentified pattern was observed that may be due to change in pH and/or Oxidation
Reduction Potential (ORP) of EOW because of organic nature of blood. The most effective ratio of sample to
EOW, at which decontamination was found to be maximum for urine, was 25:75 with treatment efficiency of
96.15 % and 85:15 with treatment efficiency of 84.8 % for blood. The study revealed that Electrolyzed Oxidized
Water may be used as a better alternative for treatment of liquid infectious waste.

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