| abstract |
Disclosed are methods of reducing the chemical oxygen demand (COD) of waste water streams by treating the waste water streams with a concentration of chlorine dioxide generated using a 3-Chemical Method involving sodium chlorite, sodium hypochlorite and an acid. The chlorine dioxide treatment will typically be configured to remove at least 25% of the initial organic content of the waste water stream and may be combined with other water treatment techniques including, for example, dissolved air flotation (DAF), to achieve improved organic removal rates. |