AWWA ACE61843

This slide presentation outlines a joint research effort between the University of Alberta and PWN to study the ultraviolet (UV) inactivation of protozoa, viruses and bacterial spores. Topics covered include: UV disinfection collimated beam and small scale pilot experiments; UV inactivation of micro-organisms with 120 mJ/cm², PWN pilot plant experiments; in vivo reactivation of G. muris after medium pressure UV; surface water treatment based on breakpoint chlorination and GAC filtration; emerging organic contaminants; atrazine degradation and bromate formation in synthetic water; NDMA degradation by UV photolysis; relative degradation by UV photolysis and UV/H₂O₂ oxidation in pretreated IJssel lake water; bromacil and atrazine degradation by UV photolysis, UV pilot plant experiments; bromacil degradation by UV/H₂O₂ treatment combined effect UV photolysis and hydroxyl radical oxidation; atrazine degradation by UV/H₂O₂ treatment combined effect UV photolysis and hydroxyl radical oxidation; UV and H₂O₂ dose required for 80% atrazine destruction, collimated beam experiments; atrazine degradation by UV/H₂O₂ treatment pilot plant experiments; emerging organic contaminants; microcystine degradation by UV photolysis and UV/H₂O₂ oxidation; pharmaceutical degradation by UV/H₂O₂ oxidation UV dose 600 mJ/cm², H₂O₂ dose 6 g/m³; and, conclusions on UV/H₂O₂ treatment for organic contaminant control and UV disinfection and UV/H₂O₂ treatment.