| The effects of combined ozonation and fluidized bed treatment (FBT) on the apparent molecular weight distribution of natural organic matter (NOM) in Huron River water were investigated using bench-scale and small pilot-scale systems. The total organic carbon (TOC) level in all of the apparent molecular weight fractions (determined by ultrafiltration) was reduced by FBT. Experiments conducted using ozonation/FBT indicated that at low ozone doses (0.5 and 1.0 m/mg C), ozone simultaneously oxidized high and low apparent molecular weight compounds. However, at ozone doses greater than 1.0 mg/mg C, ozone was used more efficiently. The ozonation/FBT system was then modified to a FBT/ozonation system to allow the FBR to remove the biodegradable compounds first, and then ozonate compounds that were not biodegradable.;Experiments were conducted to determine the relationship between the low molecular weight fraction (... |
