PERACETIC ACID AS ALTERNATIVE OXIDANT TREATMENT

FLORES MARINA; NIERES PABLO; CASSANO ALBERTO; LABAS MARISOL

San Diego, California

Conferencia; The17th International Conference onAdvanced Oxidation Technologies for Treatment of Water, Air and Soil (AOTs-17); 2011

Redox Technologies. University of Weser Ontario. Research Park

According to World Health Organization (WHO) more than 1100 million people have not access to improved water supply and sanitation. The problem is especially concentrated in underdevelopments countries. The first aspect is related not only to the removal of potentially pathogenic agents, but also to the control of potentially dangerous disinfection byproducts (DBPs). Commonly, several oxidants with disinfection power such as ozone, chorine and chlorine dioxide have been applied in water disinfection techniques but it is known that neither of them are free from some of the important drawbacks such as lack of residual disinfection, toxicity, poor germicidal activity, damaging aquatic life, formation or undesirable by-products, high cost or operational limitations. In this work the use of peracetic acid (PAA) as an alternative oxidant treatment was studied. Peracetic acid finds increasing use in the recent years because of its ecologically positive properties and it relative low cost. Additionally, it is characterized by its easy technical preparation and its environmental benefits (the reaction products are oxygen, water, and acetic acid). However, the most remarkable attributes of PAA are the broad spectrum of activity even in the presence of heterogeneous organic matter, absence of persistent toxic or mutagenic residual byproducts, no quenching requisites, small dependence of pH, short contact time requirements and effectiveness for primary and secondary effluents.